JP4789834B2 - Multi-domain liquid crystal display device - Google Patents

Description

  The present invention relates to a multi-domain liquid crystal display device, and more particularly to a multi-domain liquid crystal display device that generates a fringe field effect in combination with a kind of polarity inversion timing control.

  The conventional vertical alignment (VA) type liquid crystal alignment method using a negative type liquid crystal member having a negative dielectric anisotropy is such that the liquid crystal molecules are aligned with the panel surface when no voltage is applied. Since the vertical direction is aligned, a better contrast and reaction speed can be obtained than a twisted-nematic (TN) liquid crystal display device. However, in order to obtain a multi-domain splitting effect of a normal vertical alignment type liquid crystal display device (vertical aligned LCD), there is a phenomenon of leakage of a light source or a lack of domain splitting ability (insufficient ability to tilt liquid crystal molecules) in a structure combined with it. is there.

  FIG. 1 is a schematic cross-sectional view of a known vertical alignment multi-domain liquid crystal display (MVA LCD). As shown in FIG. 1, a bump 106 is formed on the upper and lower substrates 102 and 104, and then a vertical alignment film 108 of the bump 106 is covered thereon, thereby vertically aligned liquid crystal. When no voltage is applied, the molecules 112 have pre-tilt angles that are inclined in different directions, and after the voltage is applied by control, the inclination direction of the liquid crystal molecules 112 is controlled. After applying the voltage, the liquid crystal layer is divided into liquid crystal domains with different tilt directions, effectively improving the visual characteristics of gray scale display at various viewing angles. Further, the pre-tiled angle orientation structure (domain-forming structure) is not limited to the bump 106, and a concave structure 114 may be formed on the substrate 114 as shown in FIG.

  As shown in FIGS. 1 and 2, the formation method of the bump 106 or the recessed structure 116 has the effect of the multi-domain liquid crystal region, but compares the optical paths of the transmitted light I1 and I2 in a state where no voltage is applied (Voff). Then, since the liquid crystal alignment is not completely vertical due to the restriction structure of the domain boundary, light leakage due to an extra optical path difference (nd 0) occurs in the optical path of the transmitted light I2 of the tilted liquid crystal molecules. Therefore, it is necessary to attach a compensation film to the outside to eliminate light leakage and improve the contrast.

  FIG. 3 is a schematic cross-sectional view of another multi-domain vertical alignment type liquid crystal display device. As shown in FIG. 3, a slit 206 formed by the transparent electrode 204 of the substrate 202 can control the tilt direction after the liquid crystal molecules 208 are applied with voltage. However, in the method of forming the slit 206 in the electrode 204, the tilt force amount of the liquid crystal molecules 208 generated from the slit 206 may be insufficient unless the width of the slit 206 and the distance between the slits 206 are sufficiently considered. Further, the structure of the slit 206 has a sufficient amount of force for the liquid crystal molecules 208 to be twisted in either the left or right direction, and therefore, the liquid crystal molecules 208 have discontinuous dislocation defects in the alignment arrangement in the space. The dislocation defect area 210 is formed between the upper part of the slit 206 and the slits 206, and reduces the overall light transmittance.

  In addition, forming the bump 106 in the pixel unit, the slit structure 116 or the slit 206 in the electrode unit lowers the active display area of the pixel unit and lowers the aperture ratio. .

An object of the present invention is to provide a liquid crystal display device which generates a fringe electric field between a light transmission area and a reflection area of a liquid crystal unit and forms liquid crystal domains in a tilt direction of a plurality of different liquid crystal molecules in the liquid crystal unit. It is. An object of the present invention is to provide a liquid crystal display device in which a light transmission area and a reflection area of a liquid crystal unit obtain different gaps.

  In one embodiment of the multi-domain liquid crystal display device of the present invention, it mainly has a plurality of first and second image elements and a plurality of first and second auxiliary electrodes. The plurality of first and second image elements have opposite polarities in the same frame of an inversion timing control. The plurality of first auxiliary electrodes are connected to the plurality of first image elements, and the plurality of second auxiliary electrodes are connected to the plurality of second image elements. The first image element is surrounded by a part of one or more second auxiliary electrodes, and the second image element is surrounded by a part of one or more first auxiliary electrodes to form a fringe region. The inversion timing control is any one of point inversion (column inversion), column inversion (row inversion), and row inversion (column inversion) timing control.

  In another embodiment of the multi-domain liquid crystal display device of the present invention, a plurality of first and second image elements are provided, and the first and second image elements are opposite to each other in the same frame in the inversion timing control mode. Has polarity. Each of the first and second image elements has first and second extension portions, the first extension portion is adjacent to one or more side surfaces of the second image element, and the second extension portion is one or more first image elements. A fringe region is formed adjacent to the side surface. In addition, the image electrode extending portion of one image element overlaps with a common line of another image element to form a storage capacitor necessary for the pixel, and the image electrode extending portion and the common line are positioned at the scanning line or the data line. Overlap.

  Furthermore, the present invention can be applied to a liquid crystal display device having a reflection area and a light transmission area. The reflective electrode provided in the reflective area is composed of any one of a first metal layer (metal 1 layer), a second metal layer (metal 2 layer), or a third metal layer (metal 3 layer), and the auxiliary electrode is a first metal layer. , A second metal layer, a third metal layer, or a transparent conductive film.

  The auxiliary electrode according to the inversion timing control mode of the present invention has a polarity opposite to that of the auxiliary electrode and the image electrode at least partially surrounded by forming the auxiliary electrode designed in advance in a normal thin film transistor manufacturing process. Can be used to obtain a multi-domain alignment effect. Compared with the known structure of limiting the domain boundary of bump or dent structure in the prior art, in the present invention, all the liquid crystal molecules in a state where no voltage is applied (Voff) are vertically aligned, and an extra optical path difference ((nd = 0)). In addition, the present invention has a fringe region effect due to the opposite polarity of the auxiliary electrode and the image electrode, compared with a known technique in which a slit is provided in the electrode part. By providing the amount of tilting force, the active area of the display region can be increased and the overall light transmittance can be improved.

The invention of claim 1 includes a plurality of first and second image elements, a plurality of first auxiliary electrodes, and a plurality of second auxiliary electrodes, and the first and second image elements are in the same frame for inversion drive timing control. Having the opposite polarity,
The plurality of first auxiliary electrodes are connected to the first image element,
A plurality of second auxiliary electrodes connected to the second image element;
Each first image element is surrounded by one or more second auxiliary electrode local areas, and each second image element is surrounded by one or more first auxiliary electrode local areas to generate a fringe electric field. A multi-domain liquid crystal display device characterized by the above.
According to a second aspect of the present invention, the first and second image elements are alternately arranged to form an image element matrix, and the first and second auxiliary electrodes are respectively arranged in a row direction and a column direction of the image element matrix. The multi-domain liquid crystal display device according to claim 1, wherein the multi-domain liquid crystal display device is connected to the first and second image elements along a diagonal direction.
According to a third aspect of the present invention, the inversion drive timing control is point inversion, column inversion, or row inversion timing control, and the auxiliary electrode is formed of a transparent conductive member or a metal conductive member, and all the auxiliary elements surrounded by the image element. 2. The multi-domain liquid crystal display device according to claim 1, wherein the electrodes are connected to the same adjacent image element or are connected to different adjacent image elements.
According to a fourth aspect of the present invention, each of the image elements is divided into a plurality of subpixel elements by the auxiliary electrode, and each of the subpixel elements is surrounded by one or more local portions of one or more auxiliary electrodes. The multi-domain liquid crystal display device according to claim 1, wherein the multi-domain liquid crystal display device is provided.
The invention of claim 5 includes a plurality of first image elements, a plurality of second image elements,
Each first image element has a first extension,
Each of the second image elements has a second extending portion, and the first and second image elements have opposite polarities in the same frame of the inversion drive timing control,
Each of the first extending portions is adjacent to one or more side surfaces of each of the second image elements, and the second extending portion is adjacent to one or more side surfaces of each of the first image elements. A domain liquid crystal display device is used.
According to a sixth aspect of the present invention, each of the first image elements is partially surrounded by two second extending portions provided in two different second image elements, and each of the second image elements has two different first images. 6. The multi-domain liquid crystal display device according to claim 5, wherein the multi-domain liquid crystal display device is partially surrounded by two first extending portions provided in the element.
The invention according to claim 7 is characterized in that each of the image elements has a plurality of sub-pixel elements, and each of the sub-pixel elements is surrounded by one or more extending portions. A multi-domain liquid crystal display device according to claim 5.
The invention according to claim 8 is the first and second transparent substrates, the liquid crystal layer, the shared electrode, the plurality of first signal lines, the first dielectric layer, the plurality of second signal lines, the second dielectric layer, and the plurality of images facing each other. Including an electrode and a plurality of auxiliary electrodes;
The liquid crystal layer is provided between the first and second transparent substrates, the liquid crystal layer is composed of liquid crystal molecules having negative dielectric anisotropy,
The shared electrode is provided on the first transparent substrate,
The plurality of first signal lines are provided on the second transparent substrate,
The first dielectric layer is provided on the second transparent substrate, covers the first signal line,
The plurality of second signal lines are provided in the first dielectric layer,
The second dielectric layer is provided on the first dielectric layer and covers the second signal line;
The plurality of image electrodes are provided on the second dielectric layer,
The plurality of auxiliary electrodes are provided on the second transparent substrate, and each of the image electrodes is partially surrounded by one or more auxiliary electrodes;
Among them, after applying a voltage between the common electrode and the image electrode, one or more auxiliary electrodes surrounding the image electrode, and the one or more partially surrounded images of the auxiliary electrode The electrode is a multi-domain liquid crystal display device having a polarity opposite to that of the electrode.
The invention of claim 9 further includes a first polarizing plate, a second polarizing plate, an 11/4 wavelength plate and a 21/4 wavelength plate,
The first polarizing plate is provided outside the liquid crystal layer toward the first transparent substrate,
The second polarizing plate is provided outside the liquid crystal layer toward the second transparent substrate,
The 11/4 wavelength plate is provided between the first polarizing plate and the first transparent substrate,
9. The multi-domain liquid crystal display according to claim 8, wherein the 21/4 wavelength plate is provided between the second polarizing plate and the second transparent substrate, and the liquid crystal layer contains a chiral dopant material. It is a device.
The invention of claim 10 is the first and second transparent substrates, the liquid crystal layer, the shared electrode, the first metal layer, the first dielectric layer, the second metal layer, the second dielectric layer, the plurality of common lines, A dielectric layer, a plurality of first and second image electrodes,
The liquid crystal layer is provided between the first and second transparent substrates,
The shared electrode is provided on the first transparent substrate,
The first metal layer is provided on the second transparent substrate;
The first dielectric layer is provided on the second transparent substrate, covers the first metal layer,
The second metal layer is disposed on the first dielectric layer;
The second dielectric layer is disposed on the first dielectric layer and covers the second metal layer;
The plurality of common lines are provided in the second dielectric layer and connected to the common electrode;
The third dielectric layer is disposed on the second dielectric layer and covers the shared electrode;
The plurality of first and second image elements are alternately arranged in the third dielectric layer, and the first and second image electrodes have opposite polarities in the same frame of inversion drive timing control,
The first and second image electrodes have first and second extension portions, respectively, each first extension portion adjacent to one or more side surfaces of each second image element, and each second extension portion. The unit is adjacent to one or more side surfaces of each first image electrode, and the common line and the image electrode extending portion constitute a storage capacitor.
The invention according to claim 11 is characterized in that a plurality of signal lines are defined by the first metal layer and the second metal layer, and an installation position of the storage capacitor overlaps with the signal lines. A multi-domain liquid crystal display device is used.
The invention of claim 12 includes a plurality of first and second image elements, a plurality of first auxiliary electrodes and a plurality of second auxiliary electrodes,
The plurality of first and second image elements have opposite polarities in the same frame for inversion drive timing control, and the first image element and the second image element are reflected by each of the first image element and the second image element. Each area and light transmission area
The plurality of first auxiliary electrodes are connected to the first image element,
A plurality of second auxiliary electrodes connected to the second image element;
Each of the first auxiliary electrodes is adjacent to one or more side surfaces of each of the second image elements, and each of the second auxiliary electrodes is adjacent to one or more side surfaces of each of the first image elements to generate a fringe electric field. In addition, a multi-domain liquid crystal display device is characterized in that liquid crystal domains in a tilt direction of a plurality of different liquid crystal molecules are formed.
According to a thirteenth aspect of the present invention, each of the image elements has a plurality of sub-pixel elements, and each of the light transmission areas is surrounded by one or more auxiliary electrodes. A multi-domain liquid crystal display device according to claim 12.
The invention according to claim 14 is the first and second transparent substrates, the liquid crystal layer, the shared electrode, the first metal layer, the first dielectric layer, the second metal layer, the second dielectric layer, the third metal layer, and the plurality of transparent substrates facing each other. Including an image electrode, and the liquid crystal layer is provided between the first and second transparent substrates,
The shared electrode is provided on the first transparent substrate,
The first metal layer is provided on the second transparent substrate and defines a plurality of common lines;
The first dielectric layer is provided on the second transparent substrate, covers the first metal layer,
The second metal layer is disposed on the first dielectric layer;
The second dielectric layer is disposed on the first dielectric layer and covers the second metal layer;
The third metal layer is provided on the second dielectric layer, and the third metal layer defines a plurality of metal reflective electrodes and a plurality of auxiliary electrodes,
The plurality of image electrodes are provided in the second dielectric layer, each of the image electrodes being partially surrounded by one or more of one or more auxiliary electrodes;
Among them, after applying a voltage between the common electrode and the image electrode, one or more auxiliary electrodes surrounding the image electrode, and the one or more partially surrounded images of the auxiliary electrode The electrode is a multi-domain liquid crystal display device having a polarity opposite to that of the electrode.
The invention of claim 15 is characterized in that the common line is provided in a projection area of the second transparent substrate of the metal reflecting electrode, and the common line and the second metal layer constitute a storage capacitor. 14 is a multi-domain liquid crystal display device.
The invention according to claim 16 is the first and second transparent substrates, the liquid crystal layer, the shared electrode, the first metal layer, the first dielectric layer, the second metal layer, the second dielectric layer, the third metal layer, and the plurality of transparent substrates facing each other. Including an image electrode and a plurality of auxiliary electrodes;
The liquid crystal layer is provided between the first and second transparent substrates,
The shared electrode is provided on the first transparent substrate,
The first metal layer is provided on the second transparent substrate;
The first dielectric layer is provided on the second transparent substrate, covers the first metal layer,
The second metal layer is disposed on the first dielectric layer;
The second dielectric layer is disposed on the first dielectric layer and covers the second metal layer;
The third metal layer is provided on the second dielectric layer, and the third metal layer defines a plurality of metal reflective electrodes and a plurality of common lines,
The third dielectric layer is disposed on the second dielectric layer and covers the third metal layer;
The plurality of image electrodes and the plurality of auxiliary electrodes are provided in the third dielectric layer, and each of the image electrodes is partially surrounded by one or more of the one or more auxiliary electrodes;
Among them, after applying a voltage between the common electrode and the image electrode, one or more auxiliary electrodes surrounding the image electrode, and the one or more partially surrounded images of the auxiliary electrode The electrode is a multi-domain liquid crystal display device having a polarity opposite to that of the electrode.
The invention according to claim 17 is characterized in that a storage capacitor is constituted by the common line and the auxiliary electrode, a plurality of data lines are provided by the second metal layer, and the installation position of the storage capacitor overlaps the data line. The multi-domain liquid crystal display device according to claim 16.
The invention according to claim 18 is the first and second transparent substrates, the liquid crystal layer, the shared electrode, the first metal layer, the first dielectric layer, the second metal layer, the second dielectric layer, the plurality of image electrodes, and the plurality of image electrodes facing each other. Including a common line, a third dielectric layer, a third metal layer,
The liquid crystal layer is provided between the first and second transparent substrates,
The shared electrode is provided on the first transparent substrate,
The first metal layer is provided on the second transparent substrate;
The first dielectric layer is provided on the second transparent substrate, covers the first metal layer,
The second metal layer is disposed on the first dielectric layer;
The second dielectric layer is disposed on the first dielectric layer and covers the second metal layer;
Providing the plurality of image electrodes and the plurality of common lines on the second dielectric layer;
The third dielectric layer is disposed on the second dielectric layer and covers the image electrode and the common line;
The third metal layer is provided on the third dielectric layer, and the third metal layer defines a plurality of metal reflective electrodes and a plurality of auxiliary electrodes,
Each of the image electrodes is partially surrounded by one or more of one or more auxiliary electrodes, and after applying a voltage between the shared electrode and the image electrode, the one or more partial image electrodes The multi-domain liquid crystal display device is characterized in that the surrounding auxiliary electrode and the image electrode surrounded by one or more portions of the auxiliary electrode have opposite polarities.
The invention according to claim 19 is characterized in that a storage capacitor is constituted by the common line and the auxiliary electrode, a plurality of data lines are provided by the second metal layer, and an installation position of the storage capacitor overlaps with the data line. A multi-domain liquid crystal display device according to claim 18.
The invention of claim 20 is the first and second transparent substrates facing each other, the liquid crystal layer, the shared electrode, the first metal layer, the gate electrode insulating layer, the second metal layer, the passivation insulating layer, a plurality of image electrodes, a stacked layer, A plurality of metal reflective electrodes and a plurality of auxiliary electrodes,
The liquid crystal layer is provided between the first and second transparent substrates,
The shared electrode is provided on the first transparent substrate,
The first metal layer is provided on the second transparent substrate;
The gate electrode insulating layer is provided on the second transparent substrate, covers the first metal layer,
The second metal layer is provided on the gate electrode insulating layer;
The passivation insulating layer is provided on the gate electrode insulating layer, covers the second metal layer,
The plurality of image electrodes are provided on the passivation insulating layer,
The stacked layer is provided in a partial arrangement area of the image electrode;
The plurality of metal reflective electrodes are provided in the stacked layer,
The plurality of auxiliary electrodes are provided in the stacked layer, and each of the image electrodes is partially surrounded by one or more of the one or more auxiliary electrodes;
Among them, after applying a voltage between the common electrode and the image electrode, one or more auxiliary electrodes surrounding the image electrode, and the one or more partially surrounded images of the auxiliary electrode The electrode is a liquid crystal display device having a polarity opposite to that of the electrode.

  There is provided a kind of multi-domain liquid crystal display device that overcomes the above-mentioned problems of the known technology.

  FIG. 4 is a schematic local sectional view of a multi-domain LCD 10 of the present invention. As shown in FIG. 4, the multi-domain liquid crystal display device 10 has a filter substrate 12 and an array substrate 14 facing each other, and a liquid crystal layer 16 is sandwiched between two substrates. The liquid crystal layer 16 uses a negative dielectric anisotropy liquid crystal member, and the liquid crystal molecules exhibit a vertical alignment mode when no voltage is applied. Furthermore, the liquid crystal layer 16 adds a chiral dopant to accelerate the twist of the liquid crystal and reduce the disclination defect area. A switching element 20 such as a thin film transistor (TFT), an image electrode 22, and an alignment layer 24 are provided on a transparent substrate 18 of the array substrate 14. A color filter 28, a light-shielding black matrix layer 30, a shared electrode 32 and an alignment layer 34 are provided on a transparent substrate 26 of the filter substrate 12.

  The structure of the multi-domain liquid crystal display device having the polarity inversion timing control of the present invention will be described as follows. FIG. 5 is a schematic diagram of the drive module 40 of one liquid crystal display device. As shown in FIG. 5, an image and control material are received from the display control circuit 42, and a clock signal CK, a horizontal synchronization signal HSY, a vertical synchronization signal VSY, a digital image signal Da, and the like for display are received. 44 and the gate electrode line driving circuit 46. The polarity switching circuit 42a of the display control circuit 42 forms AC electricity in accordance with the horizontal synchronizing signal HSY and the vertical synchronizing signal VSY, and drives the polarity switching signal of the liquid crystal panel 50. The polarity switching circuit determines the polarity inversion timing of the liquid crystal panel 50. A common voltage Vcom supplied to the common electrode of the liquid crystal panel 50 is generated from the common electrode drive circuit 48.

  6 to 8 are schematic diagrams of the writing polarity of the pixel display signal in the same frame when the liquid crystal display device is connected to a point inversion, column inversion, or row inversion signal source. FIG. 6 shows dot inversion timing control, FIG. 7 shows row inversion timing control, and FIG. 8 shows column inversion timing control. As shown in FIGS. 6 to 8, the common characteristics in these three types of inversion timing control modes can alternately display two different types of positive and negative polarities in the same frame. Accordingly, the present invention can design a multi-domain alignment structure using this inversion timing control characteristic.

  9 and 10 are schematic views of an embodiment of the multi-domain liquid crystal display device 60 of the present invention. 9 is a schematic plan view seen from the normal direction of the substrate, and FIG. 10 is a cross-sectional view taken along line AA ′ of FIG. FIG. 9 is a schematic plan view showing a plurality of image elements 62 (picture elements) constituting the multi-domain liquid crystal display device 60. The “image element” in this specification refers to the smallest addressable display unit of the display area of the display device. As an example, an element corresponding to a red (R), green (G), or blue (B) sub-pixel of each color liquid crystal display device is an image element. As shown in FIG. 4, a plurality of scan lines 66 and data lines 68 that are parallel to each other are formed on the array substrate 14, and two adjacent scan lines 66 are formed. Is orthogonal to two adjacent data lines 68 and defines the image element placement area. FIG. 9 shows a configuration of an image element arrangement by arranging a plurality of image elements 62 in the horizontal direction (column direction) and the vertical direction (row direction) at the same time. In FIG. 9, the polarity of the image element 62 in the same frame is marked by (+) and (−) symbols. Since the present embodiment uses a dot inversion timing control mode, the positive (+) image element and the negative (-) image element in the same frame are sequentially arranged in the row direction upward and the column direction upward. Alternately display.

  In this embodiment, an image element 62 and an auxiliary electrode 64 that surrounds the image element 62 are provided in the arrangement region of the image element 62 defined by two adjacent scanning lines 66 and two adjacent data lines 68. . Since the auxiliary electrode 64 is connected to the adjacent image element 62, the auxiliary electrode 64 has a polarity opposite to that of the enclosed image element 62. Specifically, as shown in FIG. 9, the auxiliary electrode 64 includes an enclosing portion and a connecting portion. The enclosure includes substantially parallel scan lines 66 (extending along the column direction). In addition to being adjacent to the elongated strips 64a and 64b on both sides of the image element 62 and the substantially parallel data lines 68 (extending along the row direction), they are also adjacent to the elongated strips 64c and 64d on both sides of the image element 62. The surrounding portion is connected to the adjacent image element 62 by a connecting portion 64e. In the present embodiment, the connecting portion 64e has a vertically elongated strip-shaped section that bridge-connects the upper image element 62 and the lower surrounding portions 64a to 64d. Therefore, according to the present invention, the auxiliary electrode 64 that surrounds the image element 62 is connected to another image element 62 adjacent to each of the surrounded image elements. In the point inversion timing control, since two adjacent image elements have opposite polarities, a result opposite to the polarity of each auxiliary electrode 64 and the image element 62 surrounded by each auxiliary electrode 64 is obtained.

  FIG. 10 is a schematic cross-sectional view of a film layer deposition structure of the image element 62 and a relative arrangement with the auxiliary electrode 64. As shown in FIG. 10, a gate electrode insulating layer 52 having a dielectric effect is provided on the transparent substrate 18, and a second metal layer (metal 2 layer) M <b> 2 constituting the data line 68 is formed on the gate electrode insulating layer 52. Provide. A passivation insulator 54 having a dielectric effect is provided on the gate electrode insulating layer 52, an image electrode 56 that covers the data line 68 and is formed of a transparent conductive film is provided on the passivation insulator 54. In the arrangement region of the image element 62, the auxiliary electrode 64 surrounds the image electrode 56, is provided in the same layer as the image electrode 56, and both have opposite polarities. As the member of the auxiliary electrode 64, either a transparent conductive film or a metal conductive member is used. When both the auxiliary electrode 64 and the image electrode 56 are made of a transparent conductive film, the auxiliary electrode 64 provides the same function as the image electrode 56 and becomes an active display area. That is, the auxiliary electrode 64 can be regarded as an extended portion of another image element 62 adjacent to the image element 62 surrounded by the auxiliary electrode 64.

  11 and 12 illustrate the formation of fringe regions by the auxiliary electrode 64 of the present invention and the principle of modification of the liquid crystal molecule 58 alignment.

  As shown in FIG. 11, when no voltage is applied (Voff), the liquid crystal molecules 58 having negative dielectric anisotropy exhibit vertical alignment. That is, all the liquid crystal molecules 58 are aligned in a manner that is nearly perpendicular to the alignment substrate 14. Subsequently, FIG. 12 shows that the applied voltage (Von) is applied to the common electrode 32 and the image electrode 56 after a certain period of time, and therefore the fringe region effect (between the image electrode 56 and the auxiliary electrode 64 that surrounds the image electrode 56 is generated. fringe field effect) forms a gradient electric field force, and the direction of the liquid crystal molecules 58 having negative dielectric anisotropy is directed in a direction perpendicular to the gradient electric field direction. Still referring to FIG. 9, for the layout design of the auxiliary electrode 64 of the present invention, the strips 64a, 64b of the substantially parallel scanning lines 66 and the strips of the substantially parallel data lines 68 are formed on the four sides of the image electrode 56. Since the fringe electric field is triggered, the electric field directions of four different tilt directions are generated, and the surrounding liquid crystal molecules 58 are tilted to the central portion all at once. Different liquid crystal molecule tilt directions result in four different liquid crystal domain effects.

  The auxiliary electrode 64 according to the inversion timing control mode of the present invention is formed by forming the auxiliary electrode 64 designed in advance by a normal thin film transistor manufacturing process, so that the auxiliary electrode 64 and one or more partially surrounded image electrodes are formed. A multi-domain alignment effect can be obtained by utilizing the opposite polarities of those of 56. Compared to a known bump or dent structure, the liquid crystal molecules in a state where no voltage is applied (Voff) are all vertically aligned and do not cause an extra optical path difference (Δnd = 0). There is no leakage. Further, compared to the known technique of providing slits in the electrode portion, the present invention provides the fringe region effect due to the opposite polarity of the auxiliary electrode 64 and the image electrode 56 by providing a stronger tilting force of liquid crystal molecules. By increasing the active area of the region, the overall light transmittance can be improved.

  FIG. 13 is a schematic cross-sectional view of another embodiment of the stacked layer of the present invention. As shown in FIG. 13, after forming the passivation insulator 54, the planarization layer 55 is deposited, and then the image electrode 56 and the auxiliary electrode 64 are provided on the planarization layer 55, thereby increasing the formation position of the image electrode 56. And improving the aperture ratio. Alternatively, the planarization layer 55 may be formed on the gate electrode insulating layer 52 without the passivation insulator 54.

  FIG. 14 is a schematic diagram of another embodiment of the present invention. In the point inversion timing control mode, the image elements 62 having a positive electrode and a negative electrode in the same frame are displayed alternately in the row direction and the column direction. Therefore, as shown in FIG. 14, the connecting portion 64e of the auxiliary electrode 64 is also provided with an elongated strip-like section in the horizontal direction, and the left image electrode 56 and the right-side strip sections 64a to 64d are bridge-connected, The image element 62 and the auxiliary electrode 64 surrounding the image element 62 have opposite polarities.

  FIG. 15 is a schematic diagram of another embodiment of the column inversion timing control mode of the present invention. As shown in FIG. 15, in the column inversion timing control mode, the image elements 62 having the positive and negative electrodes in the same frame are displayed alternately in the row direction (vertical direction). 64e has the opposite polarity to all the image elements 62 and the auxiliary electrode 64 surrounding the image element 62 by being bridge-connected with the upper image electrode 56 and the lower strips 64a to 64d in the vertical direction. Make it.

  FIG. 16 is a schematic diagram of another embodiment of the row inversion timing control mode of the present invention. As shown in FIG. 16, in the row inversion timing control mode, the image elements 62 having the positive and negative electrodes in the same frame are displayed alternately in the column direction (lateral direction). 64e is bridged with the left image electrode 56 and the right surrounding parts 64a to 64d in the horizontal direction, so that all the image elements 62 and the auxiliary electrode 64 surrounding the image element 62 have opposite polarities. .

  In the above-described embodiment, the connecting portion 64e of the auxiliary electrode 64 is illustrated as an elongated piece-like section, but the outside, the installation direction, and the connecting place of the connecting portion 64e are not limited. It is only necessary to achieve the connection effect between the strip-shaped sections 64 a to 64 d of the arrangement area of two adjacent image elements and the image electrode 56. Furthermore, although the strip-shaped sections 64a to 64d illustrate a plurality of elongated strip-shaped sections, neither the appearance nor the installation direction is limited. It suffices if the outside of the image electrode 56 is arranged on the side surface and the fringe electric field effect can be generated by the opposite polarity.

  17 and 18 are schematic views of another embodiment of the column inversion timing control mode of the present invention. 18 is a cross-sectional view taken along the line BB ′ of FIG. As shown in FIG. 17, in the column inversion timing control mode, the image electrodes 56A and 56B in the same column have a positive electrode, and the image electrodes 56C in the other column have a negative electrode. An extending portion 561A is provided on the image electrode 56A and extends to the right side of the image electrode 56C, and an extending portion 561B is provided on the image electrode 56B and extends to the left side of the image electrode 56C. Therefore, the negative image electrode 56C and the alignment auxiliary electrode section (image electrode extending portions 561A-561B) having a positive electrode around the negative image electrode 56C generate a fringe electric field with opposite polarities. Furthermore, since the image electrode 56C (negative electrode), the upper image electrode 56D (positive electrode), and the lower image electrode 56D (positive electrode) generate fringe electric fields with opposite polarities, various inclination directions are applied according to this embodiment. It can be divided into four liquid crystal domains.

  From the embodiments described above, according to the invention, the auxiliary electrode sections (image electrode extending portions 561A and 561B) surrounding the image element 62 are not limited to being connected to the same image element 62. By providing the auxiliary electrode 64 at one end of the image element 62 having the opposite polarity, a fringe electric field effect can be generated. Further, the auxiliary electrode 64 is connected to another image electrode 56 that is closest to the image element 62 in the arrangement direction, the column direction, or the diagonal direction of the image element 62, and acquires the opposite polarity. Alternatively, by extending the connecting portion 64e of the auxiliary electrode 64 or forming the connecting portion 64e from a plurality of elongated piece-like sections, the connecting portion 64e that is far from the image electrode 56 surrounded by the auxiliary electrode 64 By jump-connecting to another image electrode 56, the auxiliary electrode 64 can have a polarity opposite to that of the image electrode 56 surrounded by the auxiliary electrode 64.

  Further, as shown in FIG. 18, in the filter substrate 12, the color filter 28 and the common electrode 32 are provided on the transparent substrate 26. In the array substrate 14, a first metal layer (metal 1 layer) M1 (not shown) is provided on the transparent substrate 18, and a scanning line 66 shown in FIG. 17 is defined. A gate electrode insulating layer 52 having a dielectric effect is provided on the gate electrode insulating layer 52 so as to cover the transparent substrate 18, the first metal layer M1, and the second metal layer (metal 2 layer) M2. The data line 68 is defined by the second metal layer M2. A passivation insulator 54 and a planarization layer 55 are sequentially provided on the gate electrode insulating layer 52 to cover the second metal layer M2. A third metal layer M <b> 3 is provided on the planarization layer 55 to define a common line 67, and the common line 67 is electrically connected to the common electrode 32. The dielectric layer 69 covers the common line 67 and is provided in the dielectric layer 69 at a distance between the transparent image electrode 56C and the extending portions 561A and 561B of adjacent image electrodes. In this embodiment, the common line 67 and the extending portions (for example, 561A and 561B shown in the figure) of each image electrode partition the dielectric layer 69 to form a storage capacitor, By overlapping the data lines 68, the aperture ratio can be improved.

  FIG. 19 is a schematic diagram of another embodiment of the row inversion timing control mode of the present invention. In the row inversion timing control mode, the image electrode 56A and the image electrode 56B in the same frame have a positive electrode, and the image electrode 56C in another adjacent row has a negative electrode. As shown in FIG. 19, the extending portion 561A is provided on the image electrode 56A and extends above the image electrode 56C, and the extending portion 561B is provided on the image electrode 56B and extends below the image electrode 56C. Therefore, the negative image electrode 56C and the auxiliary electrode 64 section (image electrode extending portions 561A and 561B) oriented with a positive electrode around the negative image electrode 56C generate fringe electric fields with opposite polarities. In addition, the common line 67 also constitutes a storage capacitor together with the extending portions (for example, 561A and 561B shown in the figure) of each image electrode, and the installation position of the common line 67 and the scanning line 66 overlap. As a result, the aperture ratio is improved.

  20 and 21 are schematic views of another embodiment of the present invention. 21 is a cross-sectional view taken along the line CC ′ of FIG. In the present invention, the generation method of the fringe electric field by the polarity inversion timing control mode is not limited. As shown in FIG. 20, the auxiliary electrode 64 surrounding each image electrode 56 may be composed of a first metal layer M1. The image electrode 56 in the area where the image element 62 is arranged and the auxiliary electrode 64 formed of the first metal layer M1 generate a fringe electric field effect due to opposite polarities. FIG. 21 is a schematic cross-sectional view of the connection arrangement inside the auxiliary electrode 64 by the first metal layer M1. As shown in FIG. 21, the image electrode 56 ″ (positive electrode) in the image element 62 arrangement area is connected to the source / drain electrode area 74 of the thin film transistor through the contact hole 72a, and the adjacent image element 62 is the first in the arrangement area. The scanning line 66 is provided on the auxiliary electrode 64 (positive electrode) in the same layer and is connected to the same source / drain electrode area 74 through the contact hole 72b, whereby the same image element is formed. The image electrode 56 ′ (negative electrode) and the auxiliary electrode 64 (positive electrode) in the arrangement area of FIG.

  22 and 23 are schematic views of another embodiment of the present invention. 23 is a cross-sectional view taken along the line DD ′ of FIG. As shown in FIG. 22, the auxiliary electrode 64 surrounding each image electrode 56 may be formed of a second metal layer (metal 2 layer) M2. The image electrode 56 in the image element 62 distribution area and the auxiliary electrode 64 composed of the second metal layer M2 generate fringe electric field effects due to opposite polarities. FIG. 23 is a schematic cross-sectional view of the connection arrangement inside the auxiliary electrode 64 by the second metal layer M2. As shown in FIG. 23, the image electrode 56 ″ (negative electrode) in the arrangement area of the image element 62 is connected to the source / drain electrode area 74 of the thin film transistor through the contact hole 72a, and the adjacent image element 62 is the second in the arrangement area. The data line 68 (not shown) is connected to the same source / drain electrode area 74 with the auxiliary electrode 64 (negative electrode) in the same layer, whereby the image of the arrangement area of the same image element is formed. The electrode 56 '(positive electrode) and the auxiliary electrode 64 (negative electrode) have fringe electric field effects due to opposite polarities.

  From the above-described embodiment, the auxiliary electrode 64 of the present invention surrounds a small portion of the image electrode 56 and generates a fringe electric field effect due to the opposite polarity. The generation method is not limited. The transparent conductive member may be provided in the same layer as the image electrode 56, or may be constituted by the first metal layer M1 and the second metal layer M2 and combined with a necessary internal connection arrangement. In the above-described embodiment, the scan line 66 is configured by the first metal layer M1 and the data line 68 is configured by the second metal layer M2. However, the scan line 66 is configured by the second metal layer M2, The data line 68 may be composed of the first metal layer M1. Further, regardless of the structure of the auxiliary electrode 64, it is possible to generate a fringe electric field effect in combination with the point inversion, row inversion, or column inversion timing control modes described above.

  FIG. 24 is a schematic diagram of another embodiment of the present invention. As shown in FIG. 24, the auxiliary electrode 64 surrounding the image electrode 56 forms an eye-shaped arrangement in the arrangement area of the image element 62, and one image element 62 is divided into three sub-pixel elements 62a, 62b, and 62c. Divide. That is, the image electrode 56 of one image element 62 is divided into three rectangular areas 56a, 56b, and 56c by the auxiliary electrode 64. Since each strip has a four-sided strip-like section surrounded by other sections, it can induce the tilt direction of four liquid crystal molecules, so that each rectangular section becomes a fringe electric field induction block independently. As shown in FIG. 25, the auxiliary electrode 64 may be arranged in a Japanese character to divide one image element 62 into two sub-pixel elements 62d and 62e. However, the effect of the present invention can be obtained regardless of the division method. The larger the number of divided areas, the faster the liquid crystal reaction. Therefore, you may adjust the arrangement | positioning system of the auxiliary electrode 64 as needed. The above-described method of dividing one image element 62 into a plurality of sub-pixel elements 62a-62e can also be applied to various methods such as a point inversion mode, a schematic model, a column inversion mode, or a row inversion mode shown in FIG. When combined with the inversion timing control mode, the arrangement and connection method of the auxiliary electrodes 64 are adjusted so as to have the opposite polarity to the auxiliary electrodes 64 surrounded by all the divided sub-pixel elements 62a to 62e.

  FIG. 26 is a schematic view of another embodiment of the image element 62 division according to the present invention. In this embodiment, each divided sub-pixel element 62a, 62b or 62c is not necessarily completely surrounded by the auxiliary electrode 64. Opening the electrode slit 71 also produces a fringe electric field. Further, the auxiliary electrode sections for dividing the same image element 62 may be connected to the same image element 62 adjacent as shown in FIG. 25 or different image elements 62 as shown in FIG. In addition, the structure of the auxiliary electrode 64 in the divided image element 62 is not limited. The auxiliary electrode 64 may be composed of the same layer as the image electrodes 56d and 56e, or the first metal layer M1 or the second metal layer M2, and one image element 62 may be divided into a plurality of sub-pixel elements.

  In the present invention, the auxiliary electrode 64 and the surrounding image electrode 56 may have opposite polarities to generate a fringe electric field effect. Its appearance is not limited and may vary as required. As an example, as shown in FIG. 28, the image electrode 56 and the auxiliary electrode 64 have an arc-shaped lead angle according to the design, and a chiral dopant is added to improve the light transmission uniformity of each region of the image element 62. it can.

  Furthermore, in the present invention, a circularly polarized light system is attached outside the liquid crystal unit to improve the light transmittance. As shown in FIG. 29, quarter wave length plates 78a and 78b are provided between the upper substrate 26 and the polarizing plate 76a, and between the lower substrate 18 and the polarizing plate 76b, respectively. The polarization system of the line can be converted into a circular polarization system by the angle between the polarization axes 45 of the polarizing plates in the two quarter-wave plates.

  30 and 31 are schematic views of another embodiment of the multi-domain liquid crystal display device of the present invention. 30 is a schematic plan view viewed from the normal direction of the substrate, and FIG. 31 is a cross-sectional view taken along the line E-E ′ of FIG. 30.

  As shown in FIG. 30, each image element 62 has a light transmission area 621 and a reflection area 622 (portion shown by a shaded line in the sectional view), and the auxiliary electrode 64 and the electrode slit around the light transmission area 621. 71 is provided to produce the effect of multi-domain alignment. In the present invention, when the auxiliary electrode section 64A and the left auxiliary electrode section 64B provided on the right side of the light transmission area 621 of the image element 62C are connected to the image element 62A and the image element 62B, respectively, the image element 62C having a negative electrode and its surroundings. The auxiliary electrode sections 64A and 64B, which are positively charged, generate a fringe field with opposite polarity. On the other hand, the electrode slit 71 itself on the bottom surface of the light transmission area 621 of the image element 62C also generates a fringe electric field. Further, a fringe electric field is generated between the image element 62C (negative electrode) and the image element 62A (positive electrode) on the top surface by the opposite polarity. Therefore, in this embodiment, the multi-domain liquid crystal effect in four different tilt directions can be obtained.

  Further, as shown in FIG. 31, in the array substrate 14, a first metal layer M <b> 1 is provided on the transparent substrate 18, and a common line 67 is defined by the first metal layer M <b> 1. A gate electrode insulating layer 52 having a dielectric effect is provided on the transparent substrate 18, and the first metal layer M1 is covered, and a second metal layer M2 is provided on the gate electrode insulating layer 52. The data line 68 and the capacitor electrode 73 are defined by the second metal layer M2. A passivation insulator 54 and a planarization layer 55 are sequentially provided on the gate electrode insulating layer 52 to cover the second metal layer M2. The transparent image electrode 56 and the third metal layer M3 are provided on the planarizing layer 55, and the third metal layer M3 defines an auxiliary electrode 64 surrounding the image electrode 56 and a metal reflective electrode 75. . A metal reflective electrode 75 is provided in the alignment area of some of the image elements 62 to constitute a reflection area of the liquid crystal display device. The light transmission area of the liquid crystal display device is constituted by the alignment area of the transparent image electrode 56 excluding the reflection area. In the present embodiment, the common line 67 composed of the first metal layer M1 and the capacitor electrode 73 composed of the second metal layer M2 are also provided below the metal reflective electrode 75 to improve the aperture ratio. Furthermore, both partition the gate electrode insulating layer 52 to form a storage capacitor. The aperture ratio is improved by providing transparent image electrodes 56 on the planarization layer 55 and accumulating the formation positions.

  FIG. 32 is a schematic plan view of another embodiment of the present invention. As shown in FIG. 32, the auxiliary electrode 64 is newly provided with an electrode slit 71 provided with an auxiliary electrode section 64C at the boundary between the light transmission area and the reflection area to further improve the amount of tilting force of the liquid crystal molecules and to align the light transmission area 621. Strengthen sex.

  FIG. 33 is a schematic sectional view of another embodiment of the present invention. As shown in FIG. 33, after providing the passivation insulator 54 on the gate electrode insulating layer 52, covering the second metal layer M2, and providing the transparent image electrode 56 on the passivation insulator 54, a stacked layer 77 is partially formed. By providing the reflective electrode 75 in the stacked layer 77 in addition to the transparent image electrode arrangement area, different gaps can be obtained in the light transmission area and the reflection area of the liquid crystal unit.

  FIG. 34 is a schematic sectional view of another embodiment of the present invention. As shown in FIG. 34, a passivation insulator 54 and a planarizing layer 55 are provided in order on the gate electrode insulating layer 52 to cover the second metal layer M2. A third metal layer M3 is provided on the planarization layer 55, and a common line 67 and a metal reflective electrode 75 are defined. The common line 67, the auxiliary electrode 64, and the storage capacitor are configured. The installation position of the common line 67 overlaps with the data line 68 to improve the aperture ratio. The dielectric layer 79 covers the common line 67 and the metal reflective electrode 75, and the transparent image electrode 56 and the auxiliary electrode 64 composed of a transparent conductive member are provided on the dielectric layer 79.

  FIG. 35 is a schematic sectional view of another embodiment of the present invention. As shown in FIG. 35, the common line 67 is formed of a transparent electrode, and together with the auxiliary electrode 64, forms a storage capacitor. The installation position of the common line 67 overlaps with the data line 68 to improve the aperture ratio. The dielectric layer 79 covers the common line 67 and the transparent image electrode 56, and the metal reflective electrode 75 and the auxiliary electrode 64 defined by the third metal layer M 3 are provided on the dielectric layer 79.

  In the present embodiment, the size and arrangement of the reflection area of the liquid crystal display device are not limited and can be adjusted as necessary. The auxiliary electrode 64 may be composed of a transparent electrode or a reflective electrode. In addition, you may comprise a reflective electrode from the 1st metal layer M1, the 2nd metal layer M2, or the 3rd metal layer M3.

  FIG. 36 shows another embodiment in which the image element of the reflection area and the light transmission area of the present invention is divided into a plurality of sub-pixel elements. As shown in FIG. 36, the light transmission area 621 and the reflection area 622 are selected and arranged in the sub-pixel element, and the arrangement method and position of the auxiliary electrode 64 and the electrode slit 71 can be arbitrarily changed. A fringe electric field effect may be generated by surrounding the image element and having the opposite polarity. Furthermore, although the number of divisions of the sub-pixel elements is three, it can be adjusted as necessary, and is not limited to this.

  FIG. 37 is another embodiment in which the image element of the reflection area and the light transmission area of the present invention is divided into a plurality of sub-pixel elements. As shown in FIG. 37, the auxiliary electrode 64 covers the metal layer or a metal layer thereon, thereby providing the auxiliary electrode section with a reflecting plate function, thereby providing a micro-reflective liquid crystal display device. Configure.

1 is a schematic cross-sectional view of a known multi-domain vertical alignment liquid crystal display device. FIG. 3 is a schematic cross-sectional view of another multi-domain vertical alignment type liquid crystal display device known in the art. FIG. 3 is a schematic cross-sectional view of another multi-domain vertical alignment type liquid crystal display device. 1 is a schematic diagram of a local cross-sectional view of a multi-domain vertical alignment type liquid crystal display device of the present invention. It is the schematic of the drive module of one liquid crystal display device. It is the schematic of the write polarity of the display signal of the same frame (frame) pixel in a different inversion timing control mode. It is the schematic of the write polarity of the display signal of the same frame (frame) pixel in a different inversion timing control mode. It is the schematic of the write polarity of the display signal of the same frame (frame) pixel in a different inversion timing control mode. 1 is a schematic view of a multi-domain liquid crystal display device according to an embodiment of the present invention. 1 is a schematic cross-sectional view of a multi-domain liquid crystal display device according to an embodiment of the present invention. It is the schematic which shows the design principle of the auxiliary electrode of this invention. It is the schematic which shows the design principle of the auxiliary electrode of this invention. FIG. 3 is a schematic cross-sectional view of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. It is the schematic of another Example of the column inversion timing control mode of this invention. It is the schematic of another Example of the column inversion timing control mode of this invention. It is the schematic of another Example of the row inversion timing control mode of this invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. FIG. 3 is a schematic diagram of another embodiment of the present invention. It is the schematic of one Example which applied the circularly polarized light system of this invention. It is the schematic of the liquid crystal display device provided with the reflective structure in another Example of this invention. It is the schematic of the liquid crystal display device provided with the reflective structure in another Example of this invention. FIG. 4 is a schematic plan view of another embodiment of the present invention. FIG. 3 is a schematic cross-sectional view of another embodiment of the present invention. FIG. 3 is a schematic cross-sectional view of another embodiment of the present invention. FIG. 3 is a schematic cross-sectional view of another embodiment of the present invention. FIG. 6 is another embodiment in which the image element of the reflection area and the light transmission area according to the present invention is divided into a plurality of sub-pixel elements. FIG. 6 is another embodiment in which the image element of the reflection area and the light transmission area according to the present invention is divided into a plurality of sub-pixel elements.

Explanation of symbols

10, 60 Multi-domain liquid crystal display device 12 Filter substrate 14 Alignment substrate 16 Liquid crystal layer 18 Substrate 20 Switching element 22, 56 Image electrode 24 Alignment layer 26 Substrate 28 Color filter 30 Light-shielding black matrix layer 32 Shared electrode 34 Alignment layer 40 Drive module 42 Display control circuit 42a Polarity switching circuit 44 Data line driving circuit 46 Gate electrode line driving circuit 48 Shared electrode driving circuit 50 Liquid crystal panel 52 Gate electrode insulating layer 54 Passivation insulator 55 Flattening layers 56d and 56e Image electrodes 561A and 561B Extending portion 58 Liquid crystal molecule 62 Image element 62a, 62b, 62c, 62d, 62e Sub-pixel element 621 Light transmission area 622 Reflection area 64 Auxiliary electrodes 64a, 64b, 64c, 64d Strip-shaped section 64e Connection part 66 Scan line 67 Common line 68 Data line 69 , 7 Dielectric layer 71 Electrode slits 72a, 72b, 72c Contact hole 73 Capacitor electrode 75 Reflective electrode 74 Source / drain electrode area 76a, 76b Polarizing plate 77 Stacked layer 78a, 78b 1/4 wavelength plate 102, 104 Substrate 106 Bump 108 Alignment film 112 Liquid crystal molecule 114 Concave structure 202 Substrate 204 Electrode 206 Slit 208 Liquid crystal molecule 210 Dislocation defect area I1, I2 Transmitted light M1 First metal layer M2 Second metal layer M3 Third metal layer

Claims (7)

First and second transparent substrates facing each other, a liquid crystal layer, a shared electrode, a first metal layer, a first dielectric layer, a second metal layer, a second dielectric layer, a third metal layer, and a plurality of image electrodes,
The liquid crystal layer uses a negative liquid crystal member having a negative dielectric anisotropy and is provided between the first and second transparent substrates,
The shared electrode is provided on the first transparent substrate,
The first metal layer is provided on the second transparent substrate, and defines a plurality of common lines and a plurality of scanning lines electrically connected to the common electrode ,
The first dielectric layer is provided on the second transparent substrate, covers the first metal layer,
The second metal layer is disposed on the first dielectric layer and defines a plurality of data lines;
The second dielectric layer is disposed on the first dielectric layer and covers the second metal layer;
The third metal layer is provided on the second dielectric layer, and the third metal layer defines a plurality of metal reflection electrodes and a plurality of auxiliary electrodes, and the plurality of metal reflection electrodes and the plurality of auxiliary electrodes define a reflection area. Configure
The plurality of image electrodes constitute a light transmission area and are provided in the second dielectric layer, and each of the image electrodes is surrounded by each of the auxiliary electrodes,
Among these, after applying a voltage between the common electrode and the image electrode, the auxiliary electrode surrounding the image electrode and the image electrode surrounded by the auxiliary electrode have opposite polarities Multi-domain liquid crystal display device.   2. The multi-domain liquid crystal display according to claim 1, wherein the common line is provided in a projection area of the second transparent substrate of the metal reflective electrode, and the common line and the second metal layer constitute a storage capacitor. apparatus. First and second transparent substrates facing each other, a liquid crystal layer, a shared electrode, a first metal layer, a first dielectric layer, a second metal layer, a second dielectric layer, a third metal layer, a plurality of image electrodes, and a plurality of auxiliary electrodes Including
The liquid crystal layer uses a negative liquid crystal member having a negative dielectric anisotropy and is provided between the first and second transparent substrates,
The shared electrode is provided on the first transparent substrate,
The first metal layer is provided on the second transparent substrate and defines a plurality of scanning lines;
The first dielectric layer is provided on the second transparent substrate, covers the first metal layer,
The second metal layer is disposed on the first dielectric layer and defines a plurality of data lines;
The second dielectric layer is disposed on the first dielectric layer and covers the second metal layer;
The third metal layer is provided on the second dielectric layer, and defines a plurality of common lines electrically connected to the plurality of metal reflective electrodes and the common electrode by the third metal layer,
A third dielectric layer is provided on the second dielectric layer and covers the third metal layer;
The plurality of image electrodes and the plurality of auxiliary electrodes are provided in the third dielectric layer, and each of the image electrodes is surrounded by each of the auxiliary electrodes,
Among these, the plurality of metal reflective electrodes constitute a reflection area , the plurality of image electrodes constitute a light transmission area, and a voltage is applied between the shared electrode and the image electrode, and then the image electrode is surrounded. The multi-domain liquid crystal display device, wherein the auxiliary electrode and the image electrode surrounded by the auxiliary electrode have opposite polarities.   4. The multi-layer according to claim 3, wherein a storage capacitor is formed by the common line and the auxiliary electrode, a plurality of data lines are provided by the second metal layer, and the storage capacitor is installed at a position overlapping the data line. Domain liquid crystal display device. First and second transparent substrates facing each other, a liquid crystal layer, a shared electrode, a first metal layer, a first dielectric layer, a second metal layer, a second dielectric layer, a plurality of image electrodes, and a plurality of electrodes electrically connected to the shared electrode Including a common line, a third dielectric layer, a third metal layer,
The liquid crystal layer uses a negative liquid crystal member having a negative dielectric anisotropy and is provided between the first and second transparent substrates,
The shared electrode is provided on the first transparent substrate,
The first metal layer is provided on the second transparent substrate and defines a plurality of scanning lines;
The first dielectric layer is provided on the second transparent substrate, covers the first metal layer,
The second metal layer is disposed on the first dielectric layer and defines a plurality of data lines;
The second dielectric layer is disposed on the first dielectric layer and covers the second metal layer;
The plurality of image electrodes and the plurality of common lines are provided in the second dielectric layer to form a light transmission area,
The third dielectric layer is disposed on the second dielectric layer and covers the image electrode and the common line;
The third metal layer is provided on the third dielectric layer, and the third metal layer defines a plurality of metal reflection electrodes and a plurality of auxiliary electrodes, and the plurality of metal reflection electrodes and the plurality of auxiliary electrodes define a reflection area. Configure
Each of the image electrodes is surrounded by each of the auxiliary electrodes, and after applying a voltage between the shared electrode and the image electrode, the auxiliary electrode surrounding the image electrode and the image electrode surrounded by the auxiliary electrode And a multi-domain liquid crystal display device having the opposite polarity.   6. The multi-layer according to claim 5, wherein a storage capacitor is constituted by the common line and the auxiliary electrode, a plurality of data lines are provided by the second metal layer, and an installation position of the storage capacitor overlaps the data line. Domain liquid crystal display device. First and second transparent substrates facing each other, liquid crystal layer, shared electrode, first metal layer, gate electrode insulating layer, second metal layer, passivation insulating layer, multiple image electrodes, stacked layers, multiple metal reflective electrodes, and multiple Including an auxiliary electrode,
The liquid crystal layer uses a negative liquid crystal member having a negative dielectric anisotropy and is provided between the first and second transparent substrates,
The shared electrode is provided on the first transparent substrate,
The first metal layer is provided on the second transparent substrate and defines a plurality of scanning lines;
The gate electrode insulating layer is provided on the second transparent substrate, covers the first metal layer,
The second metal layer is provided on the gate electrode insulating layer and defines a plurality of data lines;
The passivation insulating layer is provided on the gate electrode insulating layer, covers the second metal layer,
The plurality of image electrodes are provided in the passivation insulating layer to form a light transmission area;
The stacked layer is provided in a partial arrangement area of the image electrode;
The plurality of metal reflective electrodes are provided in the stacked layer,
The plurality of auxiliary electrodes are provided in the stacked layer, each of the image electrodes is surrounded by each of the auxiliary electrodes, and the plurality of metal reflection electrodes and the plurality of auxiliary electrodes constitute a reflection area,
The light transmission area and the reflection area have different thicknesses, and a voltage is applied between the shared electrode and the image electrode, and then the auxiliary electrode is surrounded by the auxiliary electrode. A liquid crystal display device having a polarity opposite to that of the image electrode.

Images