CN118262677A - Display panel, compensation method and device - Google Patents

Abstract

The application discloses a display panel, a compensation method and equipment, which relate to the technical field of liquid crystal display and comprise the following steps: a liquid crystal panel; a timing controller configured to generate a data signal; the compensation module is respectively connected with the time sequence controller and the liquid crystal panel and is configured to compensate the first-class signals of the data signals so as to obtain compensation signals; wherein the compensation signal is configured to compensate for a display image quality of the liquid crystal panel. The display panel provided by the application compensates the first-class signals through the compensation module, so that the display image quality of the liquid crystal panel is compensated, the problem of bright and dark lines of the display panel is further solved, and the display effect of the display panel is improved.

Description

Display panel, compensation method and device

Technical Field

The embodiment of the application relates to the technical field of liquid crystal display, in particular to a display panel, a compensation method and equipment.

Background

The interlaced driving technique divides an image frame into an upper half field and a lower half field by alternating scanning. In each field, only the pixels of the odd or even rows are driven simultaneously, while the other group of rows is temporarily ignored. Therefore, a complete picture is formed by combining pictures of front and rear frames, and under a dynamic picture, a fishbone-shaped picture quality problem can occur due to a time difference. And after the interlacing driving technology is combined with DLG (Dual Line Gate) time sequences, the problem of fishbone image quality can be effectively improved. However, due to the different charging time of the odd and even rows, bright and dark lines appear in the display screen, so that the display effect of the display panel is poor.

Disclosure of Invention

The embodiment of the application provides a display panel, a compensation method and equipment, which are used for solving the technical problem of poor display effect of the display panel caused by a spacer driving technology in the prior art.

In order to solve the technical problems, the embodiment of the application discloses the following technical scheme:

in a first aspect, there is provided a display panel including:

A liquid crystal panel;

a timing controller configured to generate a data signal;

The compensation module is respectively connected with the time sequence controller and the liquid crystal panel and is configured to compensate the first-class signals of the data signals so as to obtain compensation signals;

Wherein the compensation signal is configured to compensate for display image quality of the liquid crystal panel.

With reference to the first aspect, the compensation module includes a splitting unit configured to receive the data signal and split the data signal by odd lines and even lines to obtain a first-type line signal.

With reference to the first aspect, the compensation module further includes a gray-scale mapping table, where the gray-scale mapping table is connected to the splitting unit, and the gray-scale mapping table is configured to characterize a gray-scale value of the first type of line signal and a compensation value corresponding to the gray-scale value.

In combination with the first aspect, the compensation module further includes a modification unit, where the modification unit is connected to the splitting unit and the gray-scale mapping table, and the modification unit is configured to modify the gray-scale value of the first row signal based on the compensation value, so as to obtain the compensation signal.

With reference to the first aspect, the display panel further includes a source driver, where the source driver is connected to the compensation module and the liquid crystal panel;

the source driver is configured to convert the compensation signal into a voltage signal, and the voltage signal is configured to be input into the liquid crystal panel to drive the liquid crystal panel to display a picture.

In a second aspect, a display compensation method is provided, applied to a display panel, and the method includes the following steps:

Acquiring a first gray scale value corresponding to a first row signal;

Compensating the first gray scale value based on a pre-constructed gray scale mapping table to obtain a compensation signal;

And inputting the compensation signal into a liquid crystal panel for display so as to compensate the display image quality of the liquid crystal panel.

With reference to the second aspect, the method for constructing the gray-scale mapping table includes:

acquiring a first brightness value corresponding to a first type of row when the display panel displays a first type of test graph;

acquiring a second brightness value corresponding to a second class of rows when the display panel displays the second class of test patterns;

Drawing a gray scale-brightness curve graph based on a first gray scale value corresponding to the first brightness value in the first type row and a second gray scale value corresponding to the second brightness value in the second type row;

Constructing a gray scale mapping table based on the gray scale-brightness curve graph;

The gray-scale mapping table is configured to represent gray-scale values corresponding to the first type of rows and the second type of rows under the same brightness value.

With reference to the second aspect, the method for compensating the first gray-scale value based on the pre-constructed gray-scale mapping table to obtain the compensation signal includes:

taking the second brightness value as a target brightness, and calculating to obtain a third gray-scale value corresponding to the first row when the second brightness value is sent out;

and adding the difference value between the third gray scale value and the first gray scale value to obtain the compensation signal.

With reference to the second aspect, the first type of test patterns have a plurality of gray scale values of the second type of lines of the first type of test patterns, and the gray scale values of the first type of lines of the first type of test patterns are in an arithmetic progression;

the second type of test patterns are multiple, the gray scale values of the first type of rows of the multiple second type of test patterns are unchanged, and the gray scale values of the second type of rows of the multiple second type of test patterns are in an arithmetic progression.

In a third aspect, there is provided a display device comprising a display panel as claimed in any one of the first aspects or being displayed using a display compensation method as claimed in any one of the second aspects.

One of the above technical solutions has the following advantages or beneficial effects:

Compared with the prior art, the display panel of the application comprises: a liquid crystal panel; a timing controller configured to generate a data signal; the compensation module is respectively connected with the time sequence controller and the liquid crystal panel and is configured to compensate the first-class signals of the data signals so as to obtain compensation signals; wherein the compensation signal is configured to compensate for a display image quality of the liquid crystal panel. The display panel provided by the application compensates the first-class signals through the compensation module, so that the display image quality of the liquid crystal panel is compensated, the problem of bright and dark lines of the display panel is further solved, and the display effect of the display panel is improved.

The application relates to a display compensation method, which is applied to a display panel and comprises the following steps: acquiring a first gray scale value corresponding to a first row signal; compensating the first gray scale value based on a pre-constructed gray scale mapping table to obtain a compensation signal; the compensation signal is input into the liquid crystal panel for display so as to compensate the display image quality of the liquid crystal panel. The display compensation method provided by the application compensates the gray scale of the first-class signals based on the pre-constructed gray scale mapping table, thereby improving the bright and dark line problem of the display panel and improving the display effect of the display panel.

Drawings

The technical solution and other advantageous effects of the present application will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic block diagram of a display panel according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a unit structure of a compensation module according to an embodiment of the present application;

FIG. 3 is a schematic diagram of the steps of a compensation method according to an embodiment of the present application;

fig. 4 is a schematic diagram of a construction step of a gray-scale mapping table according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a gray scale-luminance curve according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a first type of test pattern according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a second type of test pattern according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The following examples illustrate embodiments of the application:

as shown in fig. 1, the present application provides a display panel including: a liquid crystal panel; a timing controller configured to generate a data signal; the compensation module is respectively connected with the time sequence controller and the liquid crystal panel and is configured to compensate the first-class signals of the data signals so as to obtain compensation signals; wherein the compensation signal is configured to compensate for a display image quality of the liquid crystal panel. Specifically, the timing controller TCON (Timing Controller) is mainly used for controlling the timing and signal processing of the liquid crystal display, so as to ensure that the image can be scanned and displayed at the correct timing. The compensation module is also called as compensation IP, and mainly aims to improve the performance of an image on a liquid crystal display screen by analyzing and adjusting an input image signal, and correct possible image quality problems. Therefore, the first-class signals in the data signals can be compensated through the compensation module, so that compensation signals are obtained, the image quality of the display panel can be compensated by inputting the compensation signals into the liquid crystal panel, the problem of bright and dark lines of the display panel is solved, and the display effect of the display panel is improved.

In some embodiments of the present application, the timing controller also has the following functions and roles, timing generation: the timing controller generates various timing signals required by the liquid crystal display, including clock signals, row scan signals, data transmission signals, and the like. These timing signals are necessary for proper operation of the liquid crystal display and trigger the activation and refresh of the liquid crystal pixels at the correct timing.

Data processing and mapping: the timing controller processes and maps the input image data to convert it into a signal form acceptable for the liquid crystal display. The time sequence controller can process the input image data according to the correct format and coding mode and map the input image data to corresponding data lines and pixels so as to realize accurate display of the image.

Gate line scanning control: the time sequence controller controls the scanning sequence and time sequence of the grid lines to ensure that the grid lines scan pixels line by line according to the correct sequence. The time sequence controller can ensure the accurate activation time and duration of the grid line signal through accurate time sequence control so as to realize the operations of scanning pixels line by line and refreshing images.

Signal synchronization and timing calibration: the timing controller synchronizes and time-sequence calibrates the input signals to ensure the stability and accuracy of the image display. The time sequence controller can adjust and correct the time sequence according to actual conditions so as to eliminate the problems of signal delay, conflict, interference and the like, thereby ensuring the definition and consistency of images.

Control instruction processing: the time sequence controller receives and processes a control instruction from the main control chip or the display controller, and performs corresponding operation according to instruction content and time sequence requirements. The timing controller can dynamically adjust timing parameters, refresh rates, pixel clock frequencies, etc. according to the requirements of the instructions to meet different display requirements and modes.

As shown in fig. 1 and 2, in an embodiment of the present application, the compensation module includes a splitting unit configured to receive the data signal and split the data signal by odd and even lines to obtain a first type of line signal. Specifically, the data signals include an odd line signal for driving odd line pixel units in the liquid crystal panel and an even line signal for driving even line pixel units in the liquid crystal panel. After the compensation module acquires the data signals, the data signals are split according to the odd-numbered line signals and the even-numbered line signals, so that the corresponding line signals needing to be compensated are obtained.

It is understood that the compensation module may compensate one of the odd-numbered row signal and the even-numbered row signal, or may compensate both of the odd-numbered row signal and the even-numbered row signal at the same time. Which specific compensation is required can be determined according to the situation of the corresponding row signal when the bright and dark line problem occurs in the display panel.

As shown in fig. 1 and fig. 2, in an embodiment of the present application, the compensation module further includes a gray-scale mapping table, where the gray-scale mapping table is connected to the splitting unit, and the gray-scale mapping table is configured to represent gray-scale values of the first-class signals and compensation values corresponding to the gray-scale values. Specifically, as shown in table 1, the gray-scale mapping table includes a luminance value, an actual gray-scale value, a mapped gray-scale value and a compensation value, wherein the luminance value represents a luminance value corresponding to a first-type line signal when displayed in the display panel, the actual gray-scale value represents an actual gray-scale of the first-type line signal, the mapped gray-scale value represents a target gray-scale value to be modified, and the compensation value represents a gray-scale value for compensating the first-type line signal under the same luminance. In table 1, the mapped gray-scale value is smaller than the actual gray-scale value in all cases except that the mapped gray-scale value is equal to the actual gray-scale value at 0 gray-scale. Since the higher the gray-scale value, the greater the luminance, that is, the compensated mapped gray-scale value, the darker the picture displayed by the first line signal. It should be noted that, the mapping gray scale value is a target gray scale value to be modified by the row signal, or the compensation gray scale, and the specific value of the mapping gray scale is determined according to the type of adjustment to be implemented by the first type of row signal. If the display is required to be adjusted brighter, the mapped gray-scale value needs to be larger than the actual gray-scale value, otherwise if the display is required to be adjusted darker, the mapped gray-scale value is smaller than the actual gray-scale value as in the following table 1.

Brightness value	Actual gray scale value	Mapping gray scale values	Compensation value
				0	0	0	0
···	···	···	···
				126	126	118	8
127	127	119	8
				128	128	120	8
129	129	121	8
				···	···	····	···
255	255	247	8

TABLE 1 Gray Scale mapping table

As shown in fig. 1 and 2, in an embodiment of the present application, the compensation module further includes a modification unit, which is connected to the splitting unit and the gray-scale mapping table, and the modification unit is configured to modify the gray-scale values of the first-class line signals based on the compensation values to obtain the compensation signals. Specifically, the modification unit modifies the gray-scale value of the first-class line signal based on the actual gray-scale value and the mapping gray-scale value in the gray-scale mapping table, if the gray-scale value of the first-class line signal is 126, the target gray-scale value is 118 according to the mapping relationship, so that the modification unit can directly modify the gray-scale value of the first-class line signal into 118, or the modification unit subtracts 126 from 118 to obtain a compensation value of-8, and then adds-8 and 126 to obtain the mapping gray-scale value 118. The resulting 118 is the modified compensation signal.

As shown in fig. 1 and 2, in an embodiment of the present application, the display panel further includes a source driver connected to the compensation module and the liquid crystal panel; the source driver is configured to convert the compensation signal into a voltage signal, and the voltage signal is configured to be input into the liquid crystal panel to drive the liquid crystal panel to display a picture. Specifically, the source driver is used to control the transmission and driving of pixel data of each row. And receives the data signal from the timing controller and converts it into a voltage signal suitable for driving the liquid crystal cell or the light emitting diode. The source driver can control the brightness and brightness balance of each row of pixels according to the image data adjusted by the compensation IP module.

As shown in fig. 1, in an embodiment of the present application, the display panel further includes a gate driver, which is responsible for controlling the selection and driving of each column of pixels. It receives the scan signal from the timing controller and converts it into a scan pulse suitable for driving the liquid crystal cell or the light emitting diode. The gate driver cooperates with the compensation IP block to ensure that each column of pixels is properly activated based on the compensated image data to effect display of the image.

As shown in fig. 1, in the embodiment of the present application, the display panel further includes a Liquid crystal panel, wherein the Liquid crystal panel includes a glass substrate (Glass Substrates), a conductive layer (Conductive Layers), an alignment layer (ALIGNMENT LAYERS), a Liquid crystal layer (Liquid CRYSTAL LAYER), a Color Filter (Color Filter), and a polarizer (Polarizer); the liquid crystal panel includes two glass substrates, one of which is called an Upper Substrate (Upper Substrate) and the other of which is called a Lower Substrate (Lower Substrate). The two glass substrates provide structural support for the liquid crystal panel and protect the internal liquid crystal layers and circuitry. The conductive layer is coated on the glass substrate, and a transparent conductive material such as Indium Tin Oxide (ITO) is generally used. The conductive layer functions as an electrode in the liquid crystal panel for applying a voltage signal and generating an electric field. The alignment layer is coated on the conductive layer and is a special polymer coating. The alignment layer controls the direction and arrangement of the liquid crystal molecules, and ensures that the liquid crystal molecules are arranged in a specific direction so as to realize accurate light adjustment and display effect. A layer of liquid crystal material, referred to as a liquid crystal layer, is sandwiched between alignment layers. The liquid crystal molecules undergo a change in orientation and alignment under the influence of an electric field. Such orientation and alignment changes affect the degree of light transmission, thereby enabling the display and adjustment of images. The color filter is positioned above the liquid crystal layer, and the light passes through the color filter before passing through the liquid crystal layer. The color filter is used for decomposing light into three primary colors of red, green and blue and limiting the color output of each pixel point. The polaroid is positioned outside the liquid crystal panel and is coated with two layers of polaroids. These polarizers help to control the polarization direction of light and enhance the effect of liquid crystal molecules in the liquid crystal layer.

Specifically, through the synergistic effect of the structures, the liquid crystal panel can control the arrangement mode of liquid crystal molecules and adjust the polarization direction and the intensity of the passing light. The arrangement of the liquid crystal molecules may be changed according to the voltage signal, thereby achieving the adjustment of the light passing therethrough. This enables the liquid crystal panel to control the transmission and blocking of light, enabling the display and concealment of images. The liquid crystal molecules in the liquid crystal panel can realize the adjustment of the light transmission degree of each pixel point according to the action of the voltage signals. The liquid crystal panel can display digital, text, images and other contents by adjusting the transmittance of each pixel point. The content of the specific display is determined by a driving circuit and a control signal. The liquid crystal panel has a planar structure, and can display input signals according to the arrangement sequence of pixel points. Such a flattened display allows the image to exhibit a more uniform and smooth effect. The liquid crystal panel has lower power consumption than other display technologies, such as CRT (cathode ray tube) displays. The liquid crystal panel consumes energy only when the alignment state of the liquid crystal molecules is changed, and consumes little energy when the stable display state is maintained. This makes the liquid crystal panel relatively economical in terms of power consumption.

As shown in fig. 1, in an embodiment of the present application, the display panel further includes a power module that functions to provide power supply, regulate voltage, manage power, and protect functions in the display panel. The display panel is ensured to normally operate, proper power is provided for each component and circuit, and stability, efficiency and safety of power supply are ensured.

As shown in fig. 3 to 7, an embodiment of the present application provides a display compensation method applied to a display panel, the method including the following steps:

S1: and acquiring a first gray scale value corresponding to the first type of line signals.

Specifically, in general, the gray scale value of a video signal is used to determine the brightness or gray scale at which each pixel is displayed on a display device. The gray scale values are typically represented in digital form, ranging from 0 to 255, where 0 represents the darkest pixel and 255 represents the brightest pixel. When the video signals are acquired, the video signals are split according to the odd lines and the even lines, so that the odd lines and the even lines are acquired. In general, an interlaced scanning technique can be implemented by displaying odd line signals and even line signals, respectively, so as to achieve a certain display effect. After the odd line signals and the even line signals are obtained, determining whether an object to be compensated is the odd line signals or the even line signals, and further determining a gray scale value corresponding to the line, namely, a first gray scale value.

S2: and compensating the first gray scale value based on a pre-constructed gray scale mapping table to obtain a compensation signal. Specifically, as shown in fig. 4, in the embodiment of the present application, the method for constructing the gray-scale mapping table includes:

s201: and acquiring a first brightness value corresponding to the first type of line when the display panel displays the first type of test pattern. Specifically, fig. 6 shows a first type of test pattern, which includes test rows in odd rows (e.g., white rows in fig. 6) and reference rows in even rows (e.g., black rows in fig. 6). The first type of test patterns comprises a plurality of test patterns, wherein the gray scale of the test line gradually increases from 0 to 255 along with the sequence number of the first type of test patterns, and the gray scale value of the reference line is kept unchanged in each test pattern, and is generally 0. After the display panel displays a first type of test pattern, the gray scale values and the brightness values of the odd lines of the first type of test pattern are recorded, and finally the gray scale values and the corresponding brightness values of all the first type of test patterns are recorded, so that the first brightness value is obtained.

S202: and obtaining a second brightness value corresponding to the second type of row when the display panel displays the second type of test pattern. Specifically, as shown in fig. 7, the second type of test pattern includes test rows and reference rows, wherein the test rows are located in even rows (e.g., white rows in fig. 7), and the reference rows are located in odd rows (e.g., black rows in fig. 7). The second type of test patterns comprises a plurality of test lines, wherein the gray scale of the test lines gradually increases from 0 to 255 along with the sequence number of the first type of test patterns, and the gray scale value of the reference lines is 0. After the display panel displays a second type of test pattern, the gray scale values and the brightness values of even lines of the second type of test pattern are recorded, and finally, the gray scale values and the corresponding brightness values of all the second type of test patterns are recorded, so that the second brightness value is obtained.

S203: and drawing a gray-scale-brightness curve graph based on the first gray-scale value corresponding to the first brightness value in the first type row and the second gray-scale value corresponding to the second brightness value in the second type row. Specifically, a gray scale-luminance graph is shown in fig. 5. It can be seen from fig. 5 that the odd and even lines have a difference in luminance value at the same gray scale. Therefore, in order to make the display pictures of the odd lines and the even lines of the display panel have the same brightness, the gray scale of the odd lines or the even lines is compensated so that the brightness of the odd lines or the even lines is equal to the brightness of the odd lines or the even lines. As can be seen from fig. 5, the luminance values of the odd lines are greater than those of the even lines at the same gray scale value. Based on this, there are two possible schemes, the first is to decrease the gray scale value of the odd-numbered lines, and the second is to increase the gray scale value of the even-numbered lines, so that the brightness values displayed in the odd-numbered lines and the even-numbered lines in the display panel are the same by changing the gray scale value.

Specifically, in the first type of test pattern and the second type of test pattern, the gray scale values are arranged in an arithmetic progression from 0 to 255, for example, the optional gray scale values may include 0, 32, 64, 96, 128, 160, 192, 224, and 255.

S204: and constructing a gray scale mapping table based on the gray scale-brightness curve graph. The gray-scale mapping table is configured to represent gray-scale values corresponding to the first class of rows and the second class of rows under the same brightness value. Specifically, as shown in fig. 5 and table 1, the gray scale-luminance curve characterizes the curve relationship between gray scale and luminance of the odd and even lines. Table 1 characterizes the scheme of achieving the same luminance as the even rows by lowering the odd row gray scale values. It will be appreciated that in other embodiments of the application, the same brightness as for the odd line display may also be achieved by increasing the even line gray scale value. How the compensation is specifically chosen may be based on the actual situation, and the application is not excessively exemplified here.

S3: the compensation signal is input into the liquid crystal panel for display so as to compensate the display image quality of the liquid crystal panel. Specifically, the compensated odd line signals are input into the liquid crystal display panel and are respectively displayed with the even line signals, so that interlace driving display is realized, and the display effect of the display panel is improved under the condition that the resolution is not reduced.

As shown in fig. 5, in an embodiment of the present application, a method for compensating a first gray-scale value based on a pre-constructed gray-scale mapping table to obtain a compensation signal includes: taking the second brightness value as the target brightness, and calculating to obtain a third gray-scale value corresponding to the first row when the second brightness value is sent out; and adding the difference value between the third gray level value and the first gray level value to obtain a compensation signal. Specifically, based on the gray-scale-luminance graph shown in fig. 5, it can be obtained that the luminance value of the odd-numbered line is used as the target luminance, the gray-scale value corresponding to the even-numbered line is changed, or the luminance value of the even-numbered line is used as the target luminance, and the gray-scale value corresponding to the odd-numbered line is changed, so that the odd-numbered line and the even-numbered line of the display panel have the same luminance, and the display effect of the display panel is improved.

When compensation is carried out, a third gray scale value corresponding to the target brightness can be directly obtained by combining a gray scale-brightness curve graph, and a compensation signal is obtained after the third gray scale value is used as a compensation value; or the third gray level value and the first gray level value are subjected to difference to obtain a compensation value, and the compensation value and the first gray level value are combined to obtain a final compensation signal.

The embodiment of the application also provides a display device, which comprises the display panel provided by the embodiment of the application, or the display device adopts the display compensation method provided by the embodiment of the application to display.

The display panel, the method and the device provided by the embodiment of the application are described in detail, and specific examples are applied to illustrate the principle and the implementation of the application, and the description of the above embodiments is only used for helping to understand the technical scheme and the core idea of the application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (10)

1. A display panel, comprising:

A liquid crystal panel;

a timing controller configured to generate a data signal;

The compensation module is respectively connected with the time sequence controller and the liquid crystal panel and is configured to compensate the first-class signals of the data signals so as to obtain compensation signals;

wherein the compensation signal is configured to compensate for a display image quality of the liquid crystal panel.

2. The display panel of claim 1, wherein the compensation module includes a splitting unit configured to receive the data signal and split the data signal in odd and even rows to obtain a first type of row signal.

3. The display panel of claim 2, wherein the compensation module further comprises a gray scale map, the gray scale map being coupled to the splitting unit, the gray scale map being configured to characterize gray scale values of the first type of signals and compensation values corresponding to the gray scale values.

4. The display panel of claim 3, wherein the compensation module further comprises a modification unit coupled to the splitting unit and the gray scale mapping table, the modification unit configured to modify the gray scale values of the first type of line signal based on the compensation values to obtain the compensation signal.

5. The display panel of any one of claims 1 to 4, further comprising a source driver connected to the compensation module and the liquid crystal panel;

the source driver is configured to convert the compensation signal into a voltage signal, and the voltage signal is configured to be input into the liquid crystal panel to drive the liquid crystal panel to display a picture.

6. A display compensation method applied to a display panel, the method comprising the steps of:

Acquiring a first gray scale value corresponding to a first row signal;

Compensating the first gray scale value based on a pre-constructed gray scale mapping table to obtain a compensation signal;

And inputting the compensation signal into a liquid crystal panel for display so as to compensate the display image quality of the liquid crystal panel.

7. The display compensation method according to claim 6, wherein the method for constructing the gray-scale mapping table comprises:

acquiring a first brightness value corresponding to a first type of row when the display panel displays a first type of test graph;

acquiring a second brightness value corresponding to a second class of rows when the display panel displays the second class of test patterns;

Drawing a gray scale-brightness curve graph based on a first gray scale value corresponding to the first brightness value in the first type row and a second gray scale value corresponding to the second brightness value in the second type row;

Constructing a gray scale mapping table based on the gray scale-brightness curve graph;

The gray-scale mapping table is configured to represent gray-scale values corresponding to the first type of rows and the second type of rows under the same brightness value.

8. The display compensation method of claim 7, wherein the compensating the first gray-scale value based on the pre-constructed gray-scale mapping table to obtain the compensation signal comprises:

taking the second brightness value as a target brightness, and calculating to obtain a third gray-scale value corresponding to the first row when the second brightness value is sent out;

and adding the difference value between the third gray scale value and the first gray scale value to obtain the compensation signal.

9. The display compensation method according to claim 8, wherein the first type of test patterns has a plurality of first type of test patterns, the gray scale values of the second type of lines of the plurality of first type of test patterns are unchanged, and the gray scale values of the first type of lines of the plurality of first type of test patterns are in an arithmetic progression;

the second type of test patterns are multiple, the gray scale values of the first type of rows of the multiple second type of test patterns are unchanged, and the gray scale values of the second type of rows of the multiple second type of test patterns are in an arithmetic progression.

10. A display device comprising the display panel according to any one of claims 1 to 5 or being displayed by the display device using the display compensation method according to any one of claims 6 to 9.