CN101320178A - Liquid crystal display device, liquid crystal display panel and driving method thereof - Google Patents

Abstract

A liquid crystal display panel receives a plurality of pixel data, wherein any pixel data at least comprises a first color sub-pixel data and a second color sub-pixel data, and the liquid crystal display panel comprises a color spot correction module and a pixel array. The color spot correction module converts the first color sub-pixel data and the second color sub-pixel data into a first data driving signal and a second data driving signal according to a first corresponding relation and a second corresponding relation respectively, wherein the first corresponding relation is different from the second corresponding relation; the pixel array is provided with a plurality of pixels, wherein any one pixel at least comprises a first color sub-pixel and a second color sub-pixel, and the first color sub-pixel and the second color sub-pixel are driven according to a first data driving signal and a second data driving signal respectively.

Description

Liquid crystal display device, liquid crystal display panel, and driving method thereof

field of invention

The invention relates to a display device, a display panel and a driving method thereof, in particular to a liquid crystal display device, a liquid crystal display panel and a driving method thereof.

technical background

With the development of display technology, flat panel display devices and their products have been widely used by people, and liquid crystal display devices have gradually replaced traditional cathode ray tube display devices due to their superior characteristics such as light and thin body, low power consumption and no radiation. And it is applied to many kinds of electronic products. Generally speaking, a liquid crystal display device has at least a liquid crystal display panel and a backlight module.

Referring to FIG. 1 , a known liquid crystal display panel 1 includes a pixel array 11 and a driving unit 12 . The pixel array 11 has a plurality of pixels 110, and each pixel 110 is composed of a blue pixel B, a red pixel R, and a green pixel G. Wherein, the driving unit 12 drives the pixel array 11 according to at least one pixel data and cooperates with the operation of the backlight source and the liquid crystal to display a picture.

However, the liquid crystal display panel 1 has some technical problems that need to be further solved, such as the problem of wide viewing angle. As mentioned above, the viewing angle of the liquid crystal display panel 1 is related to its gamma characteristic, where the gamma characteristic refers to the relationship between the gray scale of pixel data and the light transmittance (or brightness). FIG. 2 shows the pixel data of the liquid crystal display panel 1. Characteristic curve of gray scale versus light transmittance. Please refer to FIG. 2 , the red corresponding curve L1 , the green corresponding curve L2 , and the blue corresponding curve L3 represent the transmittances of red light, green light and blue light of the liquid crystal display panel 1 . The red corresponding curve L4, the green corresponding curve L5, and the blue corresponding curve L6 represent the red light, green light and blue light transmittance of the liquid crystal display panel 1 when the human eye is viewed from the side (taking 60 degrees relative to the front view as an example). Wherein, since the curves L4 , L5 , L6 are different from the curves L1 , L2 , L3 , when human eyes side-view the image displayed on the liquid crystal display panel 1 , color shift is likely to occur.

In order to solve the above problems, there is a low color shift design in the known technology. Referring to FIG. 3, another known liquid crystal display panel 1' is different from the liquid crystal display panel 1 in that each blue pixel B', red pixel R', and green pixel G' are further divided into a first area L' and a second region D'. For example, taking the pixel data as 8bit and divided into 0-255 gray scales as an example, when the pixel data is increased from 0 gray scale to 155 gray scale, the driving unit 12' correspondingly drives the first region L' from dark to dark. The state is upgraded to a bright state, and the second region D' is still maintained in a dark state at this time. And when the pixel data is increased from gray scale 156 to gray scale 255, the driving unit 12' correspondingly drives the second region D' from the dark state to the bright state, and at this time the first region L' remains in the bright state.

In addition, please refer to FIG. 4 , which shows a characteristic curve diagram of the gray scale of the pixel data of the liquid crystal display panel 1' versus the light transmittance, wherein the red corresponds to the curve L4', the green corresponds to the curve L5' and the blue corresponds to the curve L4'. Compared with the red corresponding curve L4, the green corresponding curve L5 and the blue corresponding curve L6 in Fig. 2, the curve L6' has less deviations from the curves L4', L5', L6' and the curves L1, L2, L3, so it can be Reduce color cast. It is worth noting here that the curves L4', L5', L6' respectively have a turning point C' ₄ , C' ₅ , C' ₆ , wherein the turning point C' ₄ , C' ₅ , C' ₆ occurs at the second The region D' starts to rise from the dark state to the bright state (155-156 grayscale).

Furthermore, generally speaking, due to the dependence between the transmittance of liquid crystal and the wavelength of light or other factors, when the pixel data is converted from low gray scale to high gray scale, the chromaticity point of the picture displayed by the liquid crystal display panel will change. It shifts towards the blue direction, therefore, the liquid crystal display device 1' must be processed for white balance (white balance), which makes the brightness displayed by the blue sub-pixel B' relatively lower so that the chromaticity point can be maintained at a standard value. For example, please refer to FIG. 5, which shows that when the liquid crystal display device performs white balance processing, when the white grayscale brightness G _W' displayed by the pixel 110 changes from the value V _W' to the value V _W' +9, Color scale luminance G RD' , G RL' , G _GD' , G _GL ' displayed by each second region D' and each first region L' of red pixel R _' , green pixel G', blue pixel B _' , G _BD' , G _BL' change from values (0), (V _RL' ), (0), (V _GL' ), (0), (V _BL' ) to values (16), (V _RL' +26), (16), (V _GL' +24), (1), (V _BL' +23).

Wherein, the gradation brightness G _{BD' displayed in the second region D' of the blue pixel B'} occurs from a value of 0 to a value of 1 at a higher gray-scale brightness G _W (value V _W +9), so that the blue pixel The brightness displayed by the pixel B' is reduced relative to other pixels to compensate for the shift of the chromaticity point (white balance processing).

However, please refer to FIG. 6 , the white balance processing makes the turning point C' ₆ of the blue corresponding curve L6' deviate from the turning point C' ₅ and C' ₄ , resulting in the gray scale interval I, the user is on the side The display screen viewed at an angle of viewing (the included angle relative to the 60-degree front view) appears yellowish, which is commonly known as a yellowish spot (yellowish), which in turn leads to a decrease in image quality.

Therefore, how to provide a liquid crystal display device and a driving method thereof capable of reducing color mottle is one of the important issues in the current display industry.

Contents of the invention

In view of the above problems, an object of the present invention is to provide a liquid crystal display device, a liquid crystal display panel and a driving method thereof capable of reducing color spots on a display screen.

Therefore, in order to achieve the above object, according to a liquid crystal display panel of the present invention, it receives a plurality of pixel data, wherein any pixel data has at least one first color sub-pixel data and one second color sub-pixel data, the liquid crystal display panel It includes a color speckle correction module and a pixel array. The mottle correction module converts the sub-pixel data of the first color and the sub-pixel data of the second color into a first data driving signal and a second data driving signal according to a first corresponding relationship and a second corresponding relationship, wherein the first A correspondence describes the correspondence between the first color sub-pixel data and the first data driving signal, and the second correspondence describes the correspondence between the second color sub-pixel data and the second data driving signal, and the first correspondence and the second correspondence The relationship is different; the pixel array has a plurality of pixels, and any pixel has at least one sub-pixel of the first color and a sub-pixel of the second color, wherein the sub-pixel of the first color and the sub-pixel of the second color are respectively driven according to the first data and The second data drive signal is driven.

In addition, in order to achieve the above object, according to a driving method of a liquid crystal display panel of the present invention, wherein the liquid crystal display panel has at least one pixel array, which has a plurality of pixels, and any pixel has at least one first color sub-pixel and one The second color sub-pixel, the driving method includes the following steps: receiving a plurality of pixel data, wherein any pixel data has at least one first color sub-pixel data and one second color sub-pixel data; A color sub-pixel data is converted into a first data driving signal, wherein the first corresponding relationship describes the corresponding relationship between the first color sub-pixel data and the first data driving signal; then, according to a second corresponding relationship, the second color sub-pixel The pixel data is converted into a second data driving signal, wherein the second corresponding relationship describes the corresponding relationship between the second color sub-pixel data and the second data driving signal, and the first corresponding relationship is different from the second corresponding relationship; according to the first data The driving signal and the second data driving signal respectively drive the sub-pixels of the first color and the sub-pixels of the second color.

In addition, to achieve the above object, according to a liquid crystal display device of the present invention, it receives a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of a first color and one sub-pixel data of a second color. The liquid crystal display device includes a backlight module and a liquid crystal display panel. The liquid crystal display panel is arranged opposite to the backlight module, and has a color spot correction module and a pixel array. The mottle correction module converts the sub-pixel data of the first color and the sub-pixel data of the second color into a first data driving signal and a second data driving signal according to a first corresponding relationship and a second corresponding relationship, wherein the first A correspondence describes the correspondence between the first color sub-pixel data and the first data driving signal, and the second correspondence describes the correspondence between the second color sub-pixel data and the second data driving signal, and the first correspondence and the second correspondence The relationship is different, the pixel array has a plurality of pixels, and any pixel has at least one sub-pixel of the first color and a sub-pixel of the second color, wherein the sub-pixel of the first color and the sub-pixel of the second color are respectively driven according to the first data and The second data drive signal is driven.

As mentioned above, in a liquid crystal display device, a liquid crystal display panel and a driving method thereof according to the present invention, the first color sub- The pixel data and the second color sub-pixel data are converted into the first data driving signal and the second data driving signal to respectively drive the first color sub-pixel and the second color sub-pixel. In other words, those skilled in the art can Adjusting the first corresponding relationship to be different from the second corresponding relationship, so as to increase or decrease the level of the first data driving signal to correct the relationship between the turning point of the first color corresponding curve and the turning point of the second color corresponding curve Deviation, thereby reducing the generation of stains.

For example, if the first color sub-pixel is a blue sub-pixel, and the second color sub-pixel is another color sub-pixel (such as a red sub-pixel or a green sub-pixel), then the first data can be converted according to the first correspondence The level of the driving signal is raised to move the turning point of the blue corresponding curve to a lower gray level, so as to reduce the deviation between the turning point of the blue corresponding curve and the turning points of other color corresponding curves, thereby reducing the generation of macula. Of course, it is also possible to lower the level of the second data driving signal according to the second corresponding relationship to move the turning points of the curves corresponding to other colors to a higher gray scale, so as to reduce the turning points of the curves corresponding to other colors and the turning point of the blue corresponding curve. Deviation, thereby reducing the generation of macula.

To achieve the above object, according to another liquid crystal display panel of the present invention, it receives a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of a first color. The liquid crystal display panel includes a driving unit and a pixel array. The driving unit generates a first data driving signal and a second data driving signal according to a first color sub-pixel data; the pixel array has a plurality of pixels, any pixel has at least one first color sub-pixel, and any first color The sub-pixel has a first area and a second area, wherein the first area and the second area respectively display a first color sub-pixel correction data according to the first data driving signal and the second data driving signal.

In addition, in order to achieve the above object, according to another method for driving a liquid crystal display panel of the present invention, the liquid crystal display panel has at least one pixel array, which has a plurality of pixels, and any pixel has at least one first color sub-pixel, Any one of the first color sub-pixels has a first area and a second area. The driving method includes the following steps: receiving a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of a first color; generating a first data driving signal and a second data driving signal according to the first color sub-pixel data to drive The first area and the second area display sub-pixel correction data of a first color.

In addition, to achieve the above object, according to another liquid crystal display device of the present invention, it receives a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of the first color. The liquid crystal display device includes a backlight module and a liquid crystal display panel. The liquid crystal display panel is arranged opposite to the backlight module, and has a driving unit and a pixel array; the driving unit generates a first data driving signal and a second data driving signal according to a first color sub-pixel data; the pixel array has a plurality of Pixels, wherein any pixel has at least one sub-pixel of the first color, and any sub-pixel of the first color has a first area and a second area, wherein the first area and the second area are respectively driven according to the first data and the The second data driving signal displays a sub-pixel correction data of the first color.

As mentioned above, in another liquid crystal display device, liquid crystal display panel and driving method thereof according to the present invention, the first region and the second region are respectively driven according to the first data driving signal and the second data driving signal The sub-pixel correction data of the first color is generated by displaying dark or bright respectively, so as to reduce the deviation between the turning point of the curve corresponding to the first color and the turning points of the curves corresponding to other colors, thereby reducing the occurrence of color spots.

For example, if the sub-pixel of the first color is a blue sub-pixel, the turning point of the blue corresponding curve is moved to a lower gray level by adjusting the first data driving signal and the second data driving signal, so as to reduce the difference between the turning point of the blue corresponding curve and Other colors correspond to the deviation of the turning point of the curve, thereby reducing the generation of macula. Certainly, if the sub-pixels of the first color are pixels of other colors (for example, red sub-pixels or green sub-pixels), the first data driving signal and the second data driving signal are relatively adjusted so that the turning points of the curves corresponding to other colors move to a higher gray scale. Move to reduce the deviation between the turning points of the curves corresponding to other colors and the turning point of the curve corresponding to blue, thereby reducing the generation of macula.

To achieve the above purpose, according to another liquid crystal display panel of the present invention, it receives a plurality of pixel data, wherein any pixel data has at least one first color sub-pixel data and one second color sub-pixel data. The liquid crystal display panel includes a pixel array and a bias generating unit. The pixel array has a plurality of pixels, any pixel has at least a first color sub-pixel and a second color sub-pixel, the first color sub-pixel has a first area and a second area, and the second color sub-pixel has a third area and a fourth area; the bias generating unit is electrically connected to the first area and the second area respectively so that there is a voltage between a first pixel voltage in the first area and a second pixel voltage in the second area The first voltage difference is used to jointly display a first color sub-pixel data, and is electrically connected to the third area and the fourth area respectively so that a third pixel voltage in the third area and a fourth pixel voltage in the fourth area are connected. There is a second voltage difference to jointly display a second color sub-pixel data, wherein the first voltage difference is different from the second voltage difference.

In addition, in order to achieve the above object, according to another method for driving a liquid crystal display panel of the present invention, the liquid crystal display panel has at least one pixel array, which has a plurality of pixels, and any pixel has at least one first color sub-pixel and A second color sub-pixel, the first color sub-pixel has a first area and a second area, and the second color sub-pixel has a third area and a fourth area, the driving method of the liquid crystal display panel includes the following steps: A first pixel voltage and a second pixel voltage are generated from the first area and the second area to jointly display the sub-pixel data of the first color, wherein there is a first voltage difference between the first pixel voltage and the second pixel voltage; The third region and the fourth region generate a third pixel voltage and a fourth pixel voltage to jointly display sub-pixel data of the second color, wherein there is a second voltage difference between the third pixel voltage and the fourth pixel voltage, and the second pixel voltage The first voltage difference is different from the second voltage difference.

Moreover, in order to achieve the above purpose, according to another liquid crystal display device of the present invention, it receives a plurality of pixel data, wherein any pixel data has at least one first color sub-pixel data and one second color sub-pixel data. The liquid crystal display device includes a backlight module and a liquid crystal display panel. The liquid crystal display panel is arranged opposite to the backlight module, and has a pixel array and a bias voltage generation unit; the pixel array has a plurality of pixels, and any pixel has at least a first color sub-pixel and a second color sub-pixel, and the first The color sub-pixel has a first area and a second area, and the second color sub-pixel has a third area and a fourth area, and the bias voltage generation unit is electrically connected with the first area and the second area respectively so that the first There is a first voltage difference between a first pixel voltage in the area and a second pixel voltage in the second area to jointly display a first color sub-pixel data, and are electrically connected to the third area and the fourth area respectively so that There is a second voltage difference between a third pixel voltage in the third area and a fourth pixel voltage in the fourth area to jointly display a second color sub-pixel data, wherein the first voltage difference is different from the second voltage difference .

As mentioned above, in another liquid crystal display device and liquid crystal display panel and its driving method according to the present invention, the first voltage difference is different from the second voltage difference, so the first color corresponding curve can be reduced according to the difference. The deviation between the turning point of the second color and the turning point of the curve corresponding to the second color, thereby reducing the occurrence of color spots.

For example, if the sub-pixel of the first color is a blue sub-pixel, and the sub-pixel of the second color is a pixel of another color (such as a red sub-pixel or a green sub-pixel), then the first voltage difference can be made smaller than the second voltage difference so that The turning point of the curve corresponding to blue is moved to a lower gray level to reduce the deviation between the turning point of the curve corresponding to blue and the turning point of curves corresponding to other colors, thereby reducing the generation of macula.

Description of drawings

FIG. 1 is a schematic diagram showing a known liquid crystal display panel;

FIG. 2 is a schematic diagram showing a characteristic curve of the gray scale versus light transmittance of the liquid crystal display panel in FIG. 1;

FIG. 3 is a schematic diagram showing another known liquid crystal display panel;

FIG. 4 is a schematic diagram showing a characteristic curve of the gray scale versus light transmittance of the liquid crystal display panel in FIG. 2;

5 is a schematic diagram showing the relationship between the variation of the brightness of the white gray scale displayed by the pixel and the variation of the brightness of the color scale displayed in each second area and each first area of the red pixel, the green pixel, and the blue pixel;

FIG. 6 is a schematic diagram showing a characteristic curve of the gray scale versus light transmittance of the liquid crystal display panel in FIG. 2 after white balance processing;

7 to 10 are schematic diagrams showing a liquid crystal display panel according to a first preferred embodiment of the present invention;

Fig. 11 is a schematic diagram showing the relationship between the change of the brightness of the white gray scale displayed by the pixel and the change of the brightness of the color scale displayed by each area;

FIG. 12 is a schematic diagram showing a liquid crystal display panel according to a first preferred embodiment of the present invention;

13 is a flow chart showing the driving method of the liquid crystal display panel in the first preferred embodiment of the present invention;

14 to 18 are schematic diagrams showing a liquid crystal display panel according to a second preferred embodiment of the present invention;

FIG. 19 is a flowchart showing a driving method of a liquid crystal display panel according to a second preferred embodiment of the present invention;

20 to 22 are schematic diagrams showing a liquid crystal display panel according to a third preferred embodiment of the present invention; and

FIG. 23 is a flow chart showing the driving method of the liquid crystal display panel according to the third preferred embodiment of the present invention.

Description of component symbols:

1, 1', 2, 3, 4: LCD panel

11: Pixel array

110: pixels

12, 12': drive unit

21: Mottle correction module

211: the first gamma voltage generating unit

212: second gamma voltage generating unit

213: drive unit

214: Correction unit

215, 31, 43: drive unit

22, 32, 41: pixel array

42: Bias voltage generation unit

B, B': blue pixels

B ₃ (j)～B ₃ (j+2): storage electrode line

B ₄ (j)～B ₄ (j+1): storage electrode lines

C' ₄ , C' ₅ , C' ₆ : turning points

CL ₄₁₁ , CL ₄₁₂ , CL ₄₂₁ , CL ₄₂₁ : liquid crystal capacitor

CL ₃₁₁₁ , CL ₃₁₂₁ : the first liquid crystal capacitor

CL ₃₁₁₂ , CL ₃₁₂₂ : the second liquid crystal capacitor

CL ₃₂₁₁ , CL ₃₂₂₁ : LCD capacitor

CT ₃₂₁₁ , CT ₃₂₂₁ CT ₄₁₁ , CT ₄₁₂ , CT ₄₂₁ , CT ₄₂₁ : storage capacitor

CT ₃₁₁₁ , CT ₃₁₂₁ : the first storage capacitor

CT ₃₁₁₂ , CT ₃₁₂₂ : the second storage capacitor

C _P30 : common electrode

D': the second area

D ₂₀ , D ₃₀ , D ₄₀ : Pixel data

D ₂₁ , D ₃₁ , D ₄₁ : first color sub-pixel data

D ₂₂ , D ₃₂ , D ₄₂ : second color sub-pixel data

D ₂₃ , D ₃₃ , D ₄₃ : third color sub-pixel data

D ₂₁ ': first color sub-pixel correction data

D ₃ (i)～D ₃ (i+1): data line

D ₄ (i)～D ₄ (i+1): data line

E _P31 , E _P32 , E _P33 , E _P43 : pixel electrodes

G, G': Green pixels

G _W' : gray scale brightness

G _RD' , G _RL' , G _GD' : Color scale brightness

G _GL' , G _BD' , G _BL' : gradation brightness

I: grayscale interval

L ₃₁₁ : first electrical extension

L _C30 : Liquid crystal layer

L1, L4, L4': red corresponding curve

L2, L5, L5': green corresponding curve

L3, L6, L6': blue corresponding curve

L': the first area

P ₂₀ , P ₃₀ , P ₄₀ : Pixels

P ₂₁ , P ₃₁ , P ₄₁ : sub-pixels of the first color

P ₂₂ , P ₃₂ , P ₄₂ : sub-pixels of the second color

P ₂₃ , P ₃₃ , P ₄₃ : third color sub-pixels

P ₂₁₁ , P ₃₁₁ , P ₄₁₁ : first zone

P ₂₁₂ , P ₃₁₂ , P ₄₁₂ : second zone

P ₂₂₁ , P ₃₂₁ , P ₄₂₁ : third area

P ₂₂₂ , P ₃₂₂ , P ₄₂₂ : the fourth area

P ₂₃₁ , P ₃₃₁ , P ₄₃₁ : fifth zone

P ₂₃₂ , P ₃₃₂ , P ₄₃₂ : the sixth area

R, R': red pixels

R ₁ : first correspondence

R ₁₁ , R ₁₂ : Correspondence

R ₂ : second correspondence

R ₂₁ , R ₂₂ : Correspondence

R ₃ : third correspondence

R ₃₁ , R ₃₂ : Correspondence

S ₂₁ : the first data drive signal

S ₂₂ : the second data drive signal

S ₂₃ : the third data drive signal

S ₃₁₁ : the first data driving signal

S ₃₁₂ : the second data driving signal

S ₃₁₁₁ , S ₃₁₂₁ : the first switching element

S ₃₁₁₂ , S ₃₁₂₂ : the second switching element

S ₃₂₁₁ , S ₃₂₂₁ : switching elements

S ₃ (i)～S ₃ (i+1): scanning line

S ₃₂ : Data drive signal

S ₄ (i): scan line

S ₄₁ : the first data drive signal

S ₄₂ : the second data drive signal

S ₄₁₁ , S ₄₁₂ , S ₄₂₁ , S ₄₂₁ : switching elements

S100-S130: steps of driving method

S200-S210: Steps of the driving method

S300～S310: steps of driving method

V ₁ : the first set of reference voltage

V ₂ : The second set of reference voltage

+ΔV, -ΔV: Bias signal

Detailed ways

A liquid crystal display device, a liquid crystal display panel and a driving method thereof according to preferred embodiments of the present invention will be described below with reference to related drawings.

[first embodiment]

Please refer to FIG. 7, which shows the liquid crystal display panel 2 of the first embodiment of the present invention, which receives a plurality of pixel data D20, wherein any pixel data D20 has at least one first color sub-pixel data D21 and one second color The sub-pixel data D22 , the liquid crystal display panel 2 includes a mottle correction module 21 and a pixel array 22 .

The color spot correction module 21 converts the first color sub-pixel data D21 and the second color sub-pixel data D22 into a first data driving signal S21 and a second data driving signal S21 according to a first corresponding relationship R1 and a second corresponding relationship R2 respectively. Data drive signal S22. Among them, the first correspondence R1 describes the correspondence between the first color sub-pixel data D21 and the first data driving signal S21, and the second correspondence R2 describes the correspondence between the second color sub-pixel data D21 and the second data driving signal S22 , and the first corresponding relationship R1 is different from the second corresponding relationship R2.

The pixel array 22 has a plurality of pixels P20, and any pixel P20 has at least a first color sub-pixel P21 and a second color sub-pixel P22, wherein the first color sub-pixel P21 and the second color sub-pixel P22 are respectively based on the first data The driving signal S21 and the second data driving signal S22 are driven. In other words, those skilled in the art can adjust the first corresponding relationship R1 according to the actual situation to increase or decrease the level of the first data driving signal S21 to correct the turning point of the first color corresponding curve and the second color corresponding curve The deviation of the turning point, thereby reducing the generation of stains.

For example, if the sub-pixel P21 of the first color is a blue sub-pixel, and the sub-pixel P22 of the second color is a sub-pixel of another color (such as a red sub-pixel or a green sub-pixel), the first The level of the data driving signal S21 is raised to move the turning point of the blue corresponding curve to a lower gray level, so as to reduce the deviation between the turning point of the blue corresponding curve and the turning points of other color corresponding curves, thereby reducing the generation of macula.

Of course, it is also possible to lower the level of the second data driving signal S22 according to the second corresponding relationship R2 to move the turning points of the curves corresponding to other colors to the high gray scale, so as to reduce the turning points of the curves corresponding to other colors to blue. The deviation of the turning point of the curve, thereby reducing the generation of macula.

In this embodiment, any pixel data D20 also has a third color sub-pixel data D23, and any pixel P20 also has a third color sub-pixel P23. The color spot correction module 21 converts the third color sub-pixel data D23 into a third data driving signal S23 according to a third corresponding relationship R3 to drive the third color sub-pixel P23. Wherein, the third corresponding relationship R3 may be at least different from the first corresponding relationship R1 and the second corresponding relationship R2. For example, the third correspondence R3 is different from the first correspondence R1 and the second correspondence R2, or the third correspondence R3 is different from the first correspondence R1 but the same as the second correspondence R2, or the third correspondence The relationship R3 is the same as the first corresponding relationship R1 but different from the second corresponding relationship R2.

In addition, the sub-pixel P21 of the first color, the sub-pixel P22 of the second color and the sub-pixel P23 of the third color can also be designed according to the conventional low color shift technology. In other words, each color sub-pixel P21, P22, P23 has at least a first area and a second area, wherein the first area and the second area represent a bright area and a dark area respectively, which will not be repeated here. .

An example is given below to illustrate the liquid crystal display panel 2 of the first embodiment of the present invention.

Please refer to FIG. 8 , the color speckle correction module 21 includes a first gamma voltage generating unit 211 , a second gamma voltage generating unit 212 and a driving unit 213 .

The driving unit 213 is electrically connected to the first gamma voltage generating unit 211 and the second gamma voltage generating unit 212 to provide a first set of reference voltage V1 and a second set of reference voltage V2 different from the first set of reference voltage V1 . Wherein, the first set of reference voltage V1 can be designed and generated according to the matching of the resistor string of the driving unit 213 , the resistor string of the first gamma voltage generating unit 211 , or the input voltage of the first gamma voltage generating unit 211 . Similarly, the second set of reference voltages V2 can be designed and generated according to the matching of the resistor string of the driving unit 213 , the resistor string of the second gamma voltage generating unit 212 , or the input voltage of the second gamma voltage generating unit 212 .

The driving unit 213 obtains a first reference voltage corresponding to the first color subpixel data D21 from the first group of reference voltages V1 according to the first color subpixel data D21 as the first data driving signal S21, and according to the second color The sub-pixel data D22 obtains a second reference voltage corresponding to the second color sub-pixel data D22 from the second group of reference voltages V2 as the second data driving signal S22 . At this time, the difference between the first reference voltage V1 and the second reference voltage V2 can be adjusted according to the actual situation (for example, the human eye or an optical instrument judges that there is no macula, or the human eye is acceptable), so that the color corresponding to the first color The level of the first data driving signal S21 of the sub-pixel data D21 is adjusted up or down to correct the deviation between the turning point of the first color corresponding curve and the turning point of the second color corresponding curve, thereby reducing the occurrence of color spots.

Another example is given below to illustrate the liquid crystal display panel 2 of the first embodiment of the present invention.

Please refer to FIG. 9 , different from the above, the color spot correction module 21 includes a correction unit 214 and a driving unit 215 .

The correction unit 214 can correct the first color sub-pixel data D21 into a first color sub-pixel correction data D21' according to a look-up table, and the driving unit can modify the first color sub-pixel data D21' according to the first color sub-pixel correction data D21' The first data driving signal S21 is generated to drive the first color sub-pixel P21. In other words, the change of the level of the first data driving signal S21 can be adjusted according to the first color sub-pixel correction data D21' to correct the deviation between the turning point of the first color corresponding curve and the turning point of the second color corresponding curve, thereby reducing color spots generation.

For example, if the sub-pixel P21 of the first color is a blue sub-pixel, and the sub-pixel P22 of the second color is a sub-pixel of another color, the correction unit 214 increases the gray scale value of the sub-pixel data D21 of the first color as the first color sub-pixel. The gray scale value of the color sub-pixel correction data D21', and the driving unit adjusts the level of the first data driving signal S21 to correct the blue corresponding curve according to the higher gray scale value of the first color sub-pixel correction data D21' The deviation of the turning point from the turning point of other corresponding curves, thereby reducing the generation of macula.

For another example, if the sub-pixel P21 of the first color is a sub-pixel of another color, and the sub-pixel P22 of the second color is a sub-pixel of blue, the correction unit 214 reduces the gray scale value of the sub-pixel data D21 of the first color as the second color sub-pixel. The gray scale value of the first color sub-pixel correction data D21', and the drive unit 215 corrects other corresponding curves by lowering the level of the first data driving signal S21 according to the lower gray scale value of the first color sub-pixel correction data D21' The deviation between the turning point of the blue corresponding curve and the turning point of the blue corresponding curve, thereby reducing the generation of macula.

Of course, according to actual needs, the correction unit can simultaneously correct the first color sub-pixel data and the second color sub-pixel data into a first-color sub-pixel correction data and a second-color sub-pixel correction data, and the driving unit A first data driving signal and a second data driving signal (not shown in the figure) are generated according to the first color sub-pixel correction data and the second color sub-pixel correction data.

An example is given below to illustrate the liquid crystal display panel 2 of the first embodiment of the present invention.

The first color sub-pixel P21 has a first area P211 and a second area P212; the second color sub-pixel P22 has a third area P221 and a fourth area P222; the third color sub-pixel P23 has a fifth area P231 And a sixth region P232, wherein the color sub-pixels P21, P22, P23 are respectively blue sub-pixels, red sub-pixels and green sub-pixels as examples. In addition, the design of the speckle correction module 21 can be designed according to FIG. 8 or FIG. 9 , which will not be repeated here.

Wherein, the color speckle correction module 21 can respectively drive the first region P211, the second region P212, the third region P221, the fourth region P222, the fifth region P231, the The sixth area P232 is used to display the brightness of each color scale.

For example, please refer to FIG. 11 , which shows that when the white gray scale brightness GW' displayed by the pixel P20 changes from the value VW' to the value VW'+9, each area P222, P221, P232, P231, P212, P211 The displayed color scale brightness GRD', GRL', GGD', GGL', GBD', GBL' is changed from the value (0), (VRL'), (0), (VGL'), (0), (VBL' +9) to values (16), (VRL'+26), (16), (VGL'+24), (9), (VBL'+31).

Since the color scale brightness GBD' displayed by the second region P212 of the color sub-pixel P21 (blue sub-pixel) occurs from the value 0 to the value 1 at the gray-scale brightness GW of the value VW+5, which is larger than that of the blue pixel B in FIG. 5 The gray-scale brightness GBD' displayed in the second area D' of 'is from 0 to 1, and the gray-scale brightness GW of the value VW+9 is low, and the first color sub-pixel P21 (blue sub-pixel) The gradation brightness GBL' displayed in the region P211 is higher than the gradation brightness GBL' displayed in the first region D' of the blue pixel B' shown in FIG. Two colors (other colors) correspond to the deviation of the turning point of the curve, thereby reducing the occurrence of color spots.

It is worth mentioning here that since the above-mentioned design causes the chromaticity point of the picture displayed on the liquid crystal display panel 2 to be bluish, a backlight module can be used to provide a yellowish backlight to the liquid crystal display panel to compensate for the color of the picture. The deviation of the degree point, wherein, the yellowish backlight can be achieved by changing the phosphor powder in the backlight module, of course, it can also be achieved by other methods, which will not be described here.

In addition, the first regions P211 , P221 , P231 and the second regions P212 , P222 , P232 in FIG. 10 correspond up and down, and the areas are equal as an example. Of course, the first regions P211, P221, P231 and the second regions P212, P222, P232 may also have different designs according to actual conditions. For example, please refer to FIG. 12, the first regions P211, P221, The areas of P231 and a second region P212, P222, P232 are not equal.

Please refer to FIG. 13, which shows the driving method of the liquid crystal display panel of the first embodiment of the present invention, wherein the liquid crystal display panel has at least one pixel array, which has a plurality of pixels, and any pixel has at least one first color sub-array. The driving method for a pixel and a second color sub-pixel includes steps S100-S130.

Step S100 receives a plurality of pixel data, wherein any pixel data has at least a first color sub-pixel data and a second color sub-pixel data.

Step S110 converts the first color sub-pixel data into a first data driving signal according to a first correspondence, wherein the first correspondence describes the correspondence between the first color sub-pixel data and the first data driving signal.

Step S120 converts the second color sub-pixel data into a second data driving signal according to a second correspondence, wherein the second correspondence describes the correspondence between the second color sub-pixel data and the second data driving signal, and the first The correspondence is different from the second correspondence.

Step S130 drives the sub-pixels of the first color and the sub-pixels of the second color respectively according to the first data driving signal and the second data driving signal.

The driving method of the liquid crystal display panel in this embodiment has been described in detail in the liquid crystal display panel of the first preferred embodiment (as shown in FIGS. 7 to 12 ), and will not be repeated here.

In addition, according to the liquid crystal display device of the first preferred embodiment of the present invention, it receives a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of a first color and one sub-pixel data of a second color, and the liquid crystal display device includes a A backlight module and a liquid crystal display panel.

The liquid crystal display panel is arranged opposite to the backlight module, and has a color spot correction module and a pixel array. The mottle correction module converts the sub-pixel data of the first color and the sub-pixel data of the second color into a first data driving signal and a second data driving signal according to a first corresponding relationship and a second corresponding relationship, wherein the first A correspondence describes the correspondence between the first color sub-pixel data and the first data driving signal, and the second correspondence describes the correspondence between the second color sub-pixel data and the second data driving signal, and the first correspondence and the second correspondence The relationship is different, the pixel array has a plurality of pixels, and any pixel has at least one sub-pixel of the first color and a sub-pixel of the second color, wherein the sub-pixel of the first color and the sub-pixel of the second color are respectively driven according to the first data and The second data drive signal is driven.

The liquid crystal display panel of the liquid crystal display device in this embodiment has been described in detail in the liquid crystal display panel of the first preferred embodiment (as shown in FIGS. 7 to 12 ), and will not be repeated here.

It is worth mentioning here that the backlight module provides a backlight to the liquid crystal display panel, wherein the chromaticity value of the backlight can be adjusted correspondingly according to the first corresponding relationship and the second corresponding relationship. For example, if the sub-pixels of the first color are blue sub-pixels, and the sub-pixels of the second color are sub-pixels of other colors. Wherein, the color speckle correction module increases the level of the first data driving signal according to the first corresponding relationship to correct the deviation between the turning point of the blue corresponding curve and the turning points of other color corresponding curves. At this time, the backlight of the backlight module can provide a yellowish backlight to the liquid crystal display panel to correct the chromaticity point of the picture displayed by the liquid crystal display device.

[Second embodiment]

Please refer to FIG. 14 , which shows a liquid crystal display panel 3 according to a second embodiment of the present invention. The liquid crystal display panel 3 receives a plurality of pixel data D30, any pixel data D30 has at least one first color sub-pixel data D31. The LCD panel 3 includes a driving unit 31 and a pixel array 32 .

The driving unit 31 generates a first data driving signal S311 and a second data driving signal S312 according to a first color sub-pixel data D31.

The pixel array 32 has a plurality of pixels P30, any pixel P30 has at least a first color sub-pixel P31, and any first color sub-pixel P31 has a first region P311 and a second region P312. Wherein the first area P311 and the second area P312 respectively display a first color sub-pixel correction data according to the first data driving signal S311 and the second data driving signal S312. In other words, since the first region P311 and the second region P312 respectively appear dark or bright according to the first data driving signal S311 and the second data driving signal S312 to jointly represent the correction data of the first color sub-pixel, so the second region can be reduced. The deviation between the turning points of the curves corresponding to one color and the turning points of the curves corresponding to other colors, thereby reducing the occurrence of color spots.

For example, if the sub-pixel P31 of the first color is a blue sub-pixel, the first data driving signal S311 and the second data driving signal S312 relatively move the turning point of the blue corresponding curve to a lower gray level to reduce the blue corresponding The deviation of the turning point of the curve from the turning point of the corresponding curves of other colors, thereby reducing the generation of macula.

Of course, if the first color sub-pixel P31 is a pixel of other colors (such as red sub-pixel or green sub-pixel), the first data driving signal S311 and the second data driving signal S312 are relatively adjusted so that other colors correspond to the turning point of the curve Move to a high grayscale to reduce the deviation between the turning points of the curves corresponding to other colors and the turning points of the curves corresponding to blue, thereby reducing the occurrence of macula.

In addition, any pixel P30 also has a second color sub-pixel P32 and a third color sub-pixel P33. Any sub-pixel P32 of the second color has a third area P321 and a fourth area P322, and any sub-pixel P33 of the third color has a fifth area P331 and a sixth area P332.

The driving unit 31 can generate two data driving signals according to the second color sub-pixel data D32 to drive the third area P321 and the fourth area P322 respectively. Of course, the third area P321 and the fourth area can also be driven according to the conventional low color shift technology The area P322 will not be described in detail here. Similarly, the driving unit 31 can generate two data driving signals according to the third color sub-pixel data D33 to drive the fifth area P331 and the sixth area P332 respectively. Of course, the fifth region P331 and the sixth region P332 can also be driven according to the conventional low color shift technology, which will not be repeated here.

In addition, the first area P311 , the third area P321 , and the fifth area P331 in FIG. 14 correspond vertically to the second area P312 , the fourth area P322 , and the sixth area P332 respectively, and the areas are equal as an example. Of course, the first region P411, the third region P421, the fifth region P431, the second region P412, the fourth region P422, and the sixth region P432 may also have different designs according to actual conditions. For example, please refer to As shown in FIG. 15 , the areas of the first region P311 , the third region P321 and the fifth region P331 are not equal to the areas of the second region P312 , the fourth region P322 and the sixth region P332 respectively.

An example is given below to illustrate the liquid crystal display panel 3 of the second embodiment of the present invention.

Please refer to FIG. 16, any first region P311 has a first switch element S3111, a second switch element S3112, a first liquid crystal capacitor CL3111, a second liquid crystal capacitor CL3112, a first storage capacitor CT 3111 and A second storage capacitor CT3112. In addition, any second region P312 has a first switching element S3121, a second switching element S3122, a first liquid crystal capacitor CL 3121, a second liquid crystal capacitor CL 3122, a first storage capacitor CT 3121 and a second Storage capacitor CT3122.

A first end of the first switching element S3111 is electrically connected to one end of the first liquid crystal capacitor CL3111 and one end of the first storage capacitor CT3111, and a first end of the second switching element S3112 is connected to one end of the second liquid crystal capacitor CL3112 and the second One end of the storage capacitor CT3112 is electrically connected, one end of the first liquid crystal capacitor CL3111 is electrically connected to one end of the second liquid crystal capacitor CL3112, a second end of the first switching element S3111 and a second end of the second switching element S3112 are electrically connected connect.

Similarly, a first end of the first switch element S3121 is electrically connected to one end of the first liquid crystal capacitor CL3121 and one end of the first storage capacitor CT3121, and a first end of the second switch element S3122 is connected to a first end of the second liquid crystal capacitor CL3122. One end is electrically connected to one end of the second storage capacitor CT3122, one end of the first liquid crystal capacitor CL3121 is electrically connected to one end of the second liquid crystal capacitor CL3122, a second end of the first switching element S3121 is connected to a first end of the second switching element S3122 The two terminals are electrically connected.

In addition, the liquid crystal display panel 3 also includes a plurality of data lines D3(i)˜D3(i+1), a plurality of scanning lines S3(i)˜S3(i+1) and a plurality of storage electrode lines B3(j)˜ B3(j+2). Wherein, the data line D3(i) is electrically connected to a third end of the first switching elements S3111 and S3121 and a third end of the second switching elements S3112 and S3122. The scanning line S3(i) is electrically connected to the second end of the first switching element S3111 and the second end of the second switching element S3112, and the scanning line S3(i+1) is electrically connected to the second end of the first switching element S3121 and the second end of the second switching element S3112. The second ends of the two switching elements S3122 are electrically connected. The storage electrode line B3(j) is electrically connected to the other end of the first storage capacitor CT3111, the storage electrode line B3(j+1) is electrically connected to the other end of the second storage capacitor CT3112 and the other end of the first storage capacitor CT3121, and The storage electrode line B3(j+2) is electrically connected to the other end of the second storage capacitor CT3122.

When the first switching element S3111 and the second switching element S3112 of the first area P311 are turned on simultaneously, the first data driving signal S311 is input into the first liquid crystal capacitor CL3111 and the second liquid crystal capacitor CL3111 through the data line D3(i). The liquid crystal capacitor CL 3112 is used to jointly generate the first pixel voltage, and when the first switch element S3111 and the second switch element S3112 of the first region P311 are turned off (turn off), the two bias signals +ΔV and -ΔV are respectively The first storage capacitor CT3111 and the second storage capacitor CT3112 of the first region P311 are input through the storage electrode line B3(j) and the storage electrode line B3(j+1). However, since one end of the first liquid crystal capacitor CL 3111 in the first region P311 is electrically connected to one end of the second liquid crystal capacitor CL3112, the influence of the first storage capacitor CT 3111 in the first region P311 on the first liquid crystal capacitor CL 3111 and the second The influence of the second storage capacitor CT 3112 of a region P3111 on the second liquid crystal capacitor CL3112 is mutually balanced (+ΔV and -ΔV are mutually balanced), so that the first liquid crystal capacitor CL3111 and the second liquid crystal capacitor CL3112 of the first region P311 have a common first pixel voltage.

Similarly, when the first switch element S3121 and the second switch element S3122 of the second region P312 are turned on at the same time, the second data driving signal S312 is input to the first liquid crystal in the second region P312 through the data line D3(i+1). The capacitor CL3121 and the second liquid crystal capacitor CL3122 are used to jointly generate the second pixel voltage, and when the first switching element S3121 and the second switching element S3122 of the second region P312 are turned off, the two bias signals -ΔV and +ΔV are respectively The first storage capacitor CT3121 and the second storage capacitor CT3122 of the second region P312 are input through the storage electrode line B3(j+1) and the storage electrode line B3(j+2). However, since one end of the first liquid crystal capacitor CL3121 in the second region P312 is electrically connected to one end of the second liquid crystal capacitor CL3122, the influence of the first storage capacitor CT3121 in the second region P312 on the first liquid crystal capacitor CL3121 and the second region P312 The influence of the second storage capacitor CT3121 on the second liquid crystal capacitor CL3122 is mutually balanced (+ΔV and -ΔV are mutually balanced), so that the first liquid crystal capacitor CL3121 and the second liquid crystal capacitor CL3122 in the second region P312 have the first liquid crystal capacitor CL3122 together. Two pixel voltages. At this time, the first region P311 and the second region P312 respectively display the sub-pixel correction data of the first color according to the first pixel voltage and the second pixel voltage.

In addition, in this embodiment, any third region P321 has at least one switch element S3211, a liquid crystal capacitor CL3211 and a storage capacitor CT3211. Any fourth region P322 has at least one switch element S3221, a liquid crystal capacitor CL3221 and a storage capacitor CT3221.

Wherein, a first end of the switch element S3211 is electrically connected to one end of the liquid crystal capacitor CL3211 and one end of the storage capacitor CT3211, and a first end of the switch element S3221 is electrically connected to one end of the liquid crystal capacitor CL3221 and one end of the storage capacitor CT3221. The scanning line S3(i) is electrically connected to the second ends of the switching elements S3211 and S3212. The data line D3(i+1) is electrically connected to a third terminal of the switching elements S3211 and S3221. The storage electrode line B3(j) is electrically connected to the other end of the storage capacitor CT3211, and the storage electrode line B3(j+1) is electrically connected to the other end of the storage capacitor CT3221.

The third area P321 and the fourth area P322 display the sub-pixel data of the second color according to the same data driving signal S32 and bias signals +ΔV, −ΔV. Certainly, the third area P321 and the fourth area P322 can also be designed as shown in the first area P311 and the second area P312 , which will not be repeated here.

Furthermore, in this embodiment, the switching elements S3111, S3112, S3121, S3122, S3211, S3212, S3221, and S3222 are thin film transistors (thin film transistor, TFT).

Continuing from the above, since the first region P311 and the second region P312 respectively appear dark or bright according to the first data driving signal S311 and the second data driving signal S312 to represent the first color sub-pixel correction data, the first color can be reduced. The deviation of the turning points of the corresponding curve from the turning points of the curves corresponding to the other colors.

In addition, the following will further explain the electrical connection between one end of the first liquid crystal capacitors CL3111 and CL3121 and one end of the second liquid crystal capacitors CL3112 and CL3122. Please refer to FIG. 16 and FIG. 17 at the same time. In this embodiment, a common electrode CP30 is disposed opposite to a pixel electrode EP31 and a pixel electrode EP32 via a liquid crystal layer LC30 . Wherein, the first liquid crystal capacitor CL3111 in the first area P311 is defined by the common electrode CP30 and the pixel electrode EP31 ; the second liquid crystal capacitor CL3112 is defined by the common electrode CP30 and the pixel electrode EP32 .

In addition, any first region P311 also has a first electrical extension part L311, one end of which is connected to one end of the first liquid crystal capacitor CL3111 (also referred to as the pixel electrode EP31), and the other end is connected to one end of the second liquid crystal capacitor CL3112 ( Also refers to the pixel electrode EP32), and there is a first parasitic capacitance between the first electrical extension part L311 and the scan line S3(i). Similarly, the first liquid crystal capacitor and the second liquid crystal capacitor in any second region are also the same as the first liquid crystal capacitor CL3111 and the second liquid crystal capacitor CL3112 in the first region P311, and will not be repeated here.

16 and 18 , the liquid crystal capacitor CL3211 in the third area P321 is defined by the common electrode CP30 and a pixel electrode EP33 , and the common electrode CP30 and the pixel electrode EP33 are arranged opposite to each other through the liquid crystal layer LC30 . Similarly, the liquid crystal capacitor CL3221 in the fourth region P322 is defined by the common electrode CP30 and a pixel electrode EP43 , and the common electrode CP30 and the pixel electrode EP43 are disposed opposite to each other through the liquid crystal layer LC30 . Wherein, the third region P321 or the fourth region P322 may also have a second electrical extension part L321, here taking the third region P321 having the second electrical extension part L321 as an example, one end of the second electrical extension part L321 is connected to the liquid crystal One end of the capacitor CL3211 (the pixel electrode EP33 ) has a second parasitic capacitor between it and the scan line S3(i). The capacitance value of the first parasitic capacitor is substantially the same as that of the second parasitic capacitor, so that the feed through effect of the sub-pixel P31 of the first color is the same as that of the sub-pixel P32 of the second color, thereby avoiding discoloration. biased generation. Of course, those skilled in the art can also make both the third region P321 and the fourth region P322 have the second electrical extension part according to actual needs, so as to avoid the generation of color shift.

In addition, the size of the second parasitic capacitance can actually be determined by the crossover area between the second electrical extension part and the scan line and the distance between the second electrical extension part and the scan line.

Please refer to FIG. 19, which shows the driving method of the liquid crystal display panel according to the second embodiment of the present invention, wherein the liquid crystal display panel has at least one pixel array, which has a plurality of pixels, and any pixel has at least one first color sub-array. A pixel, wherein any first color sub-pixel has a first area and a second area. The driving method includes steps S200-S210.

Step S200 receives a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of a first color.

Step S210 generates a first data driving signal and a second data driving signal according to the first color sub-pixel data to drive the first area and the second area to display a first color sub-pixel correction data.

The driving method of the liquid crystal display panel in this embodiment has been described in detail in the liquid crystal display panel of the second preferred embodiment (as shown in FIGS. 14 to 18 ), and will not be repeated here.

A liquid crystal display device according to a second preferred embodiment of the present invention includes a backlight module and a liquid crystal display panel. Wherein, the liquid crystal display device receives a plurality of pixel data, and any pixel data has at least one first color sub-pixel data. The liquid crystal display panel is arranged opposite to the backlight module, and has a driving unit and a pixel array. The driving unit generates a first data driving signal and a second data driving signal according to a first color sub-pixel data; the pixel array has a plurality of pixels, and any pixel has at least one first color sub-pixel, which has a first area and a second area. Wherein, the first area and the second area respectively display a first color sub-pixel correction data according to the first data driving signal and the second data driving signal.

The driving method of the liquid crystal display panel in this embodiment has been described in detail in the liquid crystal display panel of the second preferred embodiment (as shown in FIGS. 14 to 18 ), and will not be repeated here.

As mentioned above, in a liquid crystal display device, a liquid crystal display panel and a driving method thereof according to the present invention, the first region and the second region are driven respectively according to the first data driving signal and the second data driving signal respectively. The sub-pixel correction data of the first color is rendered dark or bright, so as to reduce the deviation between the turning point of the curve corresponding to the first color and the turning points of curves corresponding to other colors, thereby reducing the occurrence of color spots.

For example, if the first color sub-pixel is a blue sub-pixel, the first data driving signal and the second data driving signal will move the turning point of the blue corresponding curve to a lower gray level, so as to reduce the difference between the turning point of the blue corresponding curve and Other colors correspond to the deviation of the turning point of the curve, thereby reducing the generation of macula. Of course, if the sub-pixels of the first color are pixels of other colors (for example, red sub-pixels or green sub-pixels), the first data driving signal and the second data driving signal can be adjusted so that the turning points of the curves corresponding to other colors move to a higher gray scale. Move to reduce the deviation between the turning points of the curves corresponding to other colors and the turning point of the curve corresponding to blue, thereby reducing the generation of macula.

[Third embodiment]

Please refer to FIG. 20 , which shows a liquid crystal display panel 4 according to a third embodiment of the present invention. The liquid crystal display panel 4 receives a plurality of pixel data D40, wherein any pixel data D40 has at least one first color sub-pixel data D41 and one second color sub-pixel data D42, and the liquid crystal display panel 4 includes a pixel array 41, a bias voltage A generating unit 42 and a driving unit 43 .

The pixel array 41 has a plurality of pixels P40, any pixel P40 has at least a first color sub-pixel P41 and a second color sub-pixel P42, the first color sub-pixel P41 has a first region P411 and a second region P412, And the second color sub-pixel P42 has a third area P421 and a fourth area P422.

The bias generating unit 42 and the driving unit 43 are electrically connected to the first region P411 and the second region P412 so that there is a first pixel voltage in the first region P411 and a second pixel voltage in the second region P412. The voltage difference is used to jointly display the first color sub-pixel data D41, and is electrically connected to the third area P421 and the fourth area P422, so that a third pixel voltage in the third area P421 and a fourth pixel voltage in the fourth area P422 There is a second voltage difference between them to jointly display the sub-pixel data D42 of the second color, wherein the first voltage difference is different from the second voltage difference.

As mentioned above, because the first voltage difference is different from the second voltage difference, the deviation between the turning point of the first color corresponding curve and the turning point of the second color corresponding curve can be reduced according to the difference, thereby reducing the occurrence of color spots .

For example, if the sub-pixel P41 of the first color is a blue sub-pixel, and the sub-pixel P42 of the second color is a pixel of another color (such as a red sub-pixel or a green sub-pixel), the first voltage difference can be made smaller than the second voltage The difference is to move the turning point of the blue corresponding curve to a lower gray level to reduce the deviation between the turning point of the blue corresponding curve and the turning point of other color corresponding curves, thereby reducing the generation of macula.

In addition, any pixel data D40 may also have a third color sub-pixel data D43, and any pixel P40 may also have a third color sub-pixel P43. Wherein, the third color sub-pixel P43 has a fifth area P431 and a sixth area P432.

The bias generating unit 42 and the driving unit 43 are electrically connected to the fifth region P431 and the sixth region P432 so that there is a third pixel voltage between a fifth pixel voltage in the fifth region P431 and a sixth pixel voltage in the sixth region P432. The voltage difference is used to jointly display the third color sub-pixel data D43. Wherein, the third voltage difference is at least different from the first voltage difference or the second voltage difference.

In addition, the first area P411 , the third area P421 , and the fifth area P431 in FIG. 20 correspond vertically to the second area P412 , the fourth area P422 , and the sixth area P432 respectively, and the areas are equal as an example. Of course, the first region P411, the third region P421, the fifth region P431, the second region P412, the fourth region P422, and the sixth region P432 may also have different designs according to actual conditions. For example, please refer to As shown in FIG. 21 , the areas of the first region P411 , the third region P421 and the fifth region P431 are not equal to the areas of the second region P412 , the fourth region P422 and the sixth region P432 respectively.

An example is given below to illustrate the liquid crystal display panel 4 of the third embodiment of the present invention.

Please refer to FIG. 22, any first region P411, any second region P412, any third region P421 and any fourth region P422 have at least one switch element S411, S412, S421, S421, a liquid crystal capacitor CL411, CL412, CL421, CL421 and a storage capacitor CT411, CT412, CT421, CT421.

A first end of the switching elements S411, S412, S421, S421 is electrically connected to one end of the liquid crystal capacitors CL411, CL412, CL421, CL421 and one end of the storage capacitors CT411, CT412, CT421, CT421, and a second end of the switching elements S411, S421 terminal and a second terminal of the second switching elements S412, S422 are electrically connected.

In addition, the liquid crystal display panel 4 further includes a plurality of data lines D4(i)˜D4(i+1), at least one scan line S4(i) and a plurality of storage electrode lines B4(j)˜B4(j+1). Wherein, the data line D4(i) is electrically connected to a third end of the switch elements S411, S412, and the data line D4(i+1) is electrically connected to a third end of the switch elements S421, S422. The scanning line S4(i) is electrically connected to the second ends of the switching elements S411, S412, S421, S421. The storage electrode line B4(j) is electrically connected to the other end of the storage capacitors CT411 and CT421, and the storage electrode line B4(j+1) is electrically connected to the other end of the storage capacitors CT412 and CT422.

When the switching elements S411 and S412 of the first region P411 and the second region P412 are turned on, the first data driving signal S41 generated by the driving circuit (not shown in the figure) is input into the first region through the data line D4(i). P411 and the liquid crystal capacitors CL411 and CL412 in the second area P412, so that the liquid crystal capacitors CL411 and CL412 generate a first original pixel voltage and a second original pixel voltage, and when the switching elements in the first area P411 and the second area P412 When S411 and S412 are closed, the bias voltage signals +ΔV and -ΔV generated by the bias voltage generation unit (not shown in the figure) are respectively input into the storage capacitor CT411 through the storage electrode lines B4(j) and B4(j+1) , CT412, so that the first original pixel voltage of the liquid crystal capacitor CL411 and the first original pixel voltage and a second original pixel voltage of the liquid crystal capacitor CL412 are adjusted to the first pixel voltage and the second pixel voltage. Wherein, there is a first voltage difference between the first pixel voltage and the second pixel voltage.

Similarly, when the switching elements S421 and S422 of the third area P421 and the fourth area P422 are turned on, the second data driving signal S42 generated by the driving circuit (not shown in the figure) passes through the data line D4(i+1 ) into the liquid crystal capacitors CL421 and CL422 in the third area P421 and the fourth area P422, so that the liquid crystal capacitors CL421 and CL422 generate a third original pixel voltage and a fourth original pixel voltage, and when the third area P421 and the fourth area When the switching elements S421 and S422 of P422 are turned off, the bias voltage signals +ΔV and -ΔV generated by the bias voltage generation unit (not shown in the figure) are respectively transmitted through the storage electrode lines B4(j) and B4(j+1). The storage capacitors CT411 and CT412 are input, so that the third original pixel voltage of the liquid crystal capacitor CL421 and the fourth original pixel voltage of the liquid crystal capacitor CL422 are adjusted to the third pixel voltage and the fourth pixel voltage. Wherein, there is a second voltage difference between the third pixel voltage and the fourth pixel voltage, and the first voltage difference is different from the second voltage difference.

In this embodiment, the different first voltage difference and the second voltage difference can be achieved by storage capacitors CT411 , CT412 and CT422 having different capacitance values. For example, if the sub-pixel P41 of the first color (the first region P411 and the second region P412) is a blue sub-pixel, and the sub-pixel P42 of the second color (the third region P421 and the fourth region P422) is a pixel of another color (such as When it is a red sub-pixel or a green sub-pixel), the storage capacitors CT411, CT412 can be made smaller than the storage capacitors CT411, CT422, so that the first voltage difference is smaller than the second voltage difference, and the turning point of the blue corresponding curve moves toward the low gray scale Move to reduce the deviation of the turning point of the curve corresponding to blue from the turning point of the curve corresponding to other colors, thereby reducing the generation of macula.

Besides, the different first voltage difference and the second voltage difference can also be achieved by the liquid crystal capacitors CL411 , CL412 and CL422 having different capacitance values. Of course, bias signals of different levels can also be directly input to the first area, the second area, the third area and the fourth area so as to make the first voltage difference and the second voltage difference different.

It is worth mentioning here that the liquid crystal capacitor is defined by a common electrode and a pixel electrode, and the common electrode and the pixel electrode are arranged opposite to each other through the liquid crystal layer. Therefore, the size of the liquid crystal capacitor can actually be determined by the crossover area between the pixel electrode and the common electrode, or the distance between the pixel electrode and the common electrode.

In addition, the storage capacitor is defined by a storage electrode and a pixel electrode. Therefore, the size of the storage capacitor can actually be determined by the size of the intersection area between the storage electrode and the pixel electrode, or the distance between the storage electrode and the pixel electrode.

Please refer to FIG. 23, which shows the driving method of the liquid crystal display panel according to the third embodiment of the present invention, wherein the liquid crystal display panel has at least one pixel array, which has a plurality of pixels, and any pixel has at least one first color sub-pixel and A second color sub-pixel, the first color sub-pixel has a first area and a second area, and the second color sub-pixel has a third area and a fourth area, the driving method of the liquid crystal display panel includes steps S300～ S310.

In step S300, a first pixel voltage and a second pixel voltage are generated from the first area and the second area to jointly display the sub-pixel data of the first color, wherein there is a first voltage difference between the first pixel voltage and the second pixel voltage .

In step S310, a third pixel voltage and a fourth pixel voltage are generated from the third area and the fourth area to jointly display sub-pixel data of the second color, wherein there is a second voltage difference between the third pixel voltage and the fourth pixel voltage , and the first voltage difference is different from the second voltage difference.

The driving method of the liquid crystal display panel in this embodiment has been described in detail in the liquid crystal display panel of the second preferred embodiment (as shown in FIGS. 20 to 22 ), and will not be repeated here.

According to a liquid crystal display device according to a third preferred embodiment of the present invention, it receives a plurality of pixel data, wherein any pixel data has at least one first color sub-pixel data and one second color sub-pixel data, and the liquid crystal display device includes a A backlight module and a liquid crystal display panel. The liquid crystal display panel is arranged opposite to the backlight module, and has a pixel array and a bias voltage generating unit. The pixel array has a plurality of pixels, any pixel has at least a first color sub-pixel and a second color sub-pixel. The first color sub-pixel has a first area and a second area, and the second color sub-pixel has a third area and a fourth area. The bias generating unit is electrically connected to the first region and the second region respectively so that there is a first voltage difference between a first pixel voltage in the first region and a second pixel voltage in the second region to jointly display a first pixel voltage. color sub-pixel data, and are respectively electrically connected to the third area and the fourth area so that there is a second voltage difference between a third pixel voltage in the third area and a fourth pixel voltage in the fourth area to jointly display a Second color subpixel data. Wherein the first voltage difference is different from the second voltage difference.

The driving method of the liquid crystal display panel in this embodiment has been described in detail in the liquid crystal display panel of the third preferred embodiment (as shown in FIGS. 20 to 22 ), and will not be repeated here.

To sum up, in a liquid crystal display device, a liquid crystal display panel, and a driving method thereof according to the present invention, the first color sub-sequence is set according to the first corresponding relationship and the second corresponding relationship different from the first corresponding relationship. The pixel data and the second color sub-pixel data are converted into a first data driving signal and a second data driving signal to respectively drive the first color sub-pixel and the second color sub-pixel. In other words, those skilled in the art can adjust the first corresponding relationship to be different from the second corresponding relationship according to the actual situation, so as to increase or decrease the level of the first data driving signal to correct the turning point of the first color corresponding curve and The second color corresponds to the deviation of the turning point of the curve, thereby reducing the occurrence of color spots.

For example, if the sub-pixels of the first color are blue sub-pixels, and the sub-pixels of the second color are sub-pixels of other colors, the first corresponding relationship can be adjusted to be different from the second corresponding relationship so that the first data driving signal The level is raised to correct the deviation of the turning point of the curve corresponding to blue and the turning point of the curve corresponding to other colors, thereby reducing the occurrence of macula. Of course, the second corresponding relationship can also be adjusted to be different from the first corresponding relationship to lower the level of the second data driving signal to correct the deviation between the turning points of other color corresponding curves and the turning point of the blue corresponding curve, thereby reducing macula generation.

In addition, in another liquid crystal display device, liquid crystal display panel and its driving method according to the present invention, the first area and the second area are respectively driven to appear dim according to the first data driving signal and the second data driving signal respectively. Or bright to generate the first color sub-pixel correction data, so as to reduce the deviation between the turning point of the curve corresponding to the first color and the turning point of the curve corresponding to other colors, thereby reducing the occurrence of color spots. For example, if the first color sub-pixel is a blue sub-pixel, then adjust the first data driving signal and the second data driving signal so that the second region starts to be raised from a dark state to a bright state in a smaller gray scale to reduce the blue color. The deviation between the turning point of the color corresponding curve and the turning point of other color corresponding curves, thereby reducing the generation of macula.

In addition, in another liquid crystal display device, liquid crystal display panel and its driving method according to the present invention, the first voltage difference and the second voltage difference are different, so the turning point and the turning point of the first color corresponding curve can be reduced according to the difference. The second color corresponds to the deviation of the turning point of the curve, thereby reducing the occurrence of color spots.

The foregoing descriptions are illustrative only, not restrictive. Any equivalent modification or change without departing from the spirit and scope of the present invention shall be included in the appended claims.

Claims (16)

1. A liquid crystal display panel, which receives a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of a first color and sub-pixel data of a second color, and the liquid crystal display panel comprises: A mottle correction module, which converts the sub-pixel data of the first color and the sub-pixel data of the second color into a first data driving signal and a first data driving signal according to a first corresponding relationship and a second corresponding relationship respectively Two data driving signals, wherein the first correspondence describes the correspondence between the first color sub-pixel data and the first data driving signal, and the second correspondence describes the second color sub-pixel data and a correspondence between the second data driving signals, the first correspondence is different from the second correspondence; and A pixel array, which has a plurality of pixels, wherein any pixel has at least a first color sub-pixel and a second color sub-pixel, wherein the first color sub-pixel and the second color sub-pixel are respectively according to the The first data driving signal and the second data driving signal are driven. 2. The liquid crystal display panel as claimed in claim 1, wherein any pixel data further has a sub-pixel data of a third color, and any pixel further has a sub-pixel of a third color, and the mottle correction module is respectively based on a The third corresponding relationship is to convert the third color sub-pixel data into a third data driving signal to drive the third color sub-pixel. 3. The liquid crystal display panel according to claim 2, wherein the third correspondence is different from at least the first correspondence or the second correspondence. 4. The liquid crystal display panel as claimed in claim 1, wherein the mottle correction module comprises: a first gamma voltage generating unit; a second gamma voltage generating unit; and A drive unit, which is electrically connected with the first gamma voltage generation unit and the second gamma voltage generation unit to provide a first set of reference voltages and a second set of reference voltages, the first set of reference voltages and the The second group of reference voltages is different, wherein the driving unit obtains a first reference voltage corresponding to the first color sub-pixel data from the first group of reference voltages according to the first color sub-pixel data using as the first data driving signal, and obtaining a second reference voltage corresponding to the second color sub-pixel data from the second group of reference voltages according to the second color sub-pixel data as the The second data drive signal. 5. The liquid crystal display panel as claimed in claim 1, wherein the mottle correction module comprises: a correction unit that corrects the first color sub-pixel data into a first color sub-pixel correction data; and A driving unit, which modifies data according to the first color sub-pixel to generate the first data driving signal. 6. The liquid crystal display panel as claimed in claim 5, wherein the correction unit also corrects the second color sub-pixel data into a second color sub-pixel correction data, and the driving unit according to the second color The sub-pixel modifies data to generate the second data driving signal. 7. A liquid crystal display panel, which receives a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of a first color, and the liquid crystal display panel includes: a driving unit, which generates a first data driving signal and a second data driving signal according to a first color sub-pixel data; and A pixel array, which has a plurality of pixels, wherein any pixel has at least a first color sub-pixel, wherein any first color sub-pixel has a first area and a second area, the first area and the The second area displays sub-pixel correction data of a first color according to the first data driving signal and the second data driving signal respectively. 8. The liquid crystal display panel as claimed in claim 7, wherein any first area and any second area have at least a first switching element, a second switching element, a first liquid crystal capacitor and a second liquid crystal capacitor , a first end of the first switch element is electrically connected to one end of the first liquid crystal capacitor, a first end of the second switch element is electrically connected to one end of the second liquid crystal capacitor, and the first end of the second switch element is electrically connected to one end of the second liquid crystal capacitor. The terminal of a liquid crystal capacitor is electrically connected to the terminal of the second liquid crystal capacitor. 9. The liquid crystal display panel according to claim 8, wherein when the first switching element and the second switching element in the first region are turned on, the first liquid crystal in the first region The capacitor and the second liquid crystal capacitor jointly generate the first pixel voltage according to the first data driving signal, and when the first switching element and the second switching element in the second region are turned on , the first liquid crystal capacitor and the second liquid crystal capacitor in the second region jointly generate the second pixel voltage according to the second data driving signal, and the first region and the second region and displaying the sub-pixel correction data of the first color according to the first pixel voltage and the second pixel voltage respectively. 10. A liquid crystal display panel, which receives a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of a first color and one sub-pixel data of a second color, and the liquid crystal display panel comprises: A pixel array, which has a plurality of pixels, any pixel has at least a first color sub-pixel and a second color sub-pixel, the first color sub-pixel has a first area and a second area, and the The second color sub-pixel has a third area and a fourth area; and A bias generating unit, which is electrically connected to the first region and the second region respectively so that there is a voltage between a first pixel voltage in the first region and a second pixel voltage in the second region a first voltage difference to jointly display a first color sub-pixel data, and are electrically connected to the third region and the fourth region respectively so that a third pixel voltage in the third region and the fourth pixel voltage There is a second voltage difference between a fourth pixel voltage in the area to jointly display sub-pixel data of a second color, wherein the first voltage difference is different from the second voltage difference. 11. A method for driving a liquid crystal display panel, wherein the liquid crystal display panel has at least one pixel array, the pixel array has a plurality of pixels, and any pixel has at least one first color sub-pixel and one second color sub-pixel , the driving method includes: receiving a plurality of pixel data, wherein any pixel data has at least a first color sub-pixel data and a second color sub-pixel data; converting the first color sub-pixel data into a first data driving signal according to a first correspondence, wherein the first correspondence describes the relationship between the first color sub-pixel data and the first data driving signal corresponding relationship, converting the second color sub-pixel data into a second data driving signal according to a second correspondence, wherein the second correspondence describes the relationship between the second color sub-pixel data and the second data driving signal a correspondence, and the first correspondence is different from the second correspondence; and Driving the first color sub-pixel and the second color sub-pixel respectively according to the first data driving signal and the second data driving signal. 12. A method for driving a liquid crystal display panel, which is applied to a liquid crystal display panel. The liquid crystal display panel has at least one pixel array, which has a plurality of pixels, and any pixel has at least one first color sub-pixel, any of which The first color sub-pixel has a first area and a second area, and the driving method includes: receiving a plurality of pixel data, wherein any pixel data has at least one first color sub-pixel data; and A first data driving signal and a second data driving signal are generated according to the first color sub-pixel data to drive the first area and the second area to display a first color sub-pixel correction data. 13. A method for driving a liquid crystal display panel, wherein the liquid crystal display panel has at least one pixel array with a plurality of pixels, wherein any pixel has at least one sub-pixel of a first color and a sub-pixel of a second color, the The first color sub-pixel has a first area and a second area, and the second color sub-pixel has a third area and a fourth area, and the driving method includes: A first pixel voltage and a second pixel voltage are generated from the first region and the second region to jointly display the sub-pixel data of the first color, wherein the first pixel voltage and the second pixel voltage There is a first voltage difference between them; and A third pixel voltage and a fourth pixel voltage are generated from the third area and the fourth area to jointly display the sub-pixel data of the second color, wherein the third pixel voltage and the fourth pixel voltage There is a second voltage difference between them, and the first voltage difference is different from the second voltage difference. 14. A liquid crystal display device, which receives a plurality of pixel data, wherein any pixel data has at least one first color sub-pixel data and one second color sub-pixel data, said liquid crystal display device comprising: a backlight module; and A liquid crystal display panel, which is arranged opposite to the backlight module, and has: A mottle correction module, which converts the sub-pixel data of the first color and the sub-pixel data of the second color into a first data driving signal and a first data driving signal according to a first corresponding relationship and a second corresponding relationship respectively Two data driving signals, wherein the first correspondence describes the correspondence between the first color sub-pixel data and the first data driving signal, and the second correspondence describes the second color sub-pixel data and the corresponding relationship of the second data driving signal, the first corresponding relationship is different from the second corresponding relationship, and A pixel array, which has a plurality of pixels, any pixel has at least a first color sub-pixel and a second color sub-pixel, wherein the first color sub-pixel and the second color sub-pixel are respectively based on the first color sub-pixel A data driving signal and the second data driving signal are driven. 15. A liquid crystal display device, which receives a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of a first color, and the liquid crystal display device comprises: a backlight module; and A liquid crystal display panel, which is arranged opposite to the backlight module, and has: a driving unit, which generates a first data driving signal and a second data driving signal according to a first color sub-pixel data; and A pixel array, which has a plurality of pixels, any pixel has at least a first color sub-pixel, wherein any first color sub-pixel has a first area and a second area, wherein the first area and the The second area displays sub-pixel correction data of a first color according to the first data driving signal and the second data driving signal respectively. 16. A liquid crystal display device, which cooperates with a plurality of pixel data, wherein any pixel data has at least one sub-pixel data of a first color and one sub-pixel data of a second color, and the liquid crystal display device includes: a backlight module; and A liquid crystal display panel, which is arranged opposite to the backlight module, and has: A pixel array, which has a plurality of pixels, any pixel has at least a first color sub-pixel and a second color sub-pixel, the first color sub-pixel has a first area and a second area, and the the second color sub-pixel has a third area and a fourth area, and A bias generating unit, which is electrically connected to the first region and the second region respectively so that there is a voltage between a first pixel voltage in the first region and a second pixel voltage in the second region a first voltage difference to jointly display a first color sub-pixel data, and to be electrically connected to the third region and the fourth region respectively so that a third pixel voltage in the third region and the fourth pixel voltage There is a second voltage difference between a fourth pixel voltage in the area to jointly display a second color sub-pixel data, wherein the first voltage difference is different from the second voltage difference.

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