Display device

Abstract

The embodiment of the invention provides a display device. The display device includes a display panel and a timing controller. The display panel comprises a plurality of data lines and a plurality of pixel columns. One pixel column is located between adjacent data lines and comprises at least two pixels. And the time schedule controller is connected with the display panel. The time schedule controller is configured to determine coupling influence accumulation data of a data line adjacent to a to-be-compensated pixel in a current frame in a previous frame before the current frame and data voltage transmitted by the current frame to the data voltage of the to-be-compensated pixel in the current frame; determining a gray scale compensation value of the to-be-compensated pixel in the current frame based on the coupling influence accumulated data and the gain coefficient; and compensating the original gray-scale value of the pixel to be compensated in the current frame based on the gray-scale compensation value to obtain a target gray-scale value. Therefore, the problem of non-uniform picture brightness caused by the coupling capacitance during display of the display panel is solved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device. Background Art

[0002] Liquid crystal displays use the optical properties of liquid crystal materials to display images by applying different electric fields to the liquid crystal to cause it to deflect at a specific angle. Liquid crystal displays are complex electronic products. There are a large number of coupling capacitors between the data lines, electrodes, and thin-film transistors of the liquid crystal display panel. Coupling capacitors can cause many display problems, such as uneven brightness of the screen, which is the Mura phenomenon. Summary of the invention

[0003] The embodiment of the present application provides a display device to improve the problem of uneven brightness caused by coupling capacitance when a display panel is displaying, so as to at least partially solve the above-mentioned problem.

[0004] In order to solve the above problems, an embodiment of the present application provides a display device. The display device includes a display panel and a timing controller. The display panel includes a plurality of data lines and a plurality of pixel columns. One of the pixel columns is located between adjacent data lines and includes at least two pixels. The timing controller is connected to the display panel. The timing controller is configured to: determine the cumulative data of the coupling influence of the data voltage transmitted by the data lines adjacent to the pixel to be compensated in the current frame in the previous frame before the current frame and the current frame on the data voltage of the pixel to be compensated in the current frame; determine the grayscale compensation value of the pixel to be compensated in the current frame based on the cumulative data of the coupling influence and the gain coefficient; compensate the original grayscale value of the pixel to be compensated in the current frame based on the grayscale compensation value to obtain a target grayscale value.

[0005] In the display device of the embodiment of the present application, the accumulated data of the coupling effect of the data voltage transmitted by the data line adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame is determined, the grayscale compensation value of the pixel to be compensated in the current frame is determined based on the accumulated data of the coupling effect and the gain coefficient, and the original grayscale value of the pixel to be compensated in the current frame is compensated based on the grayscale compensation value. In this way, the deviation of the data voltage of the pixel to be compensated due to the capacitive coupling of the adjacent data lines in the adjacent frames is reduced, and the problem of uneven brightness of the picture caused by the capacitive coupling when the display panel is displayed is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A schematic diagram of the structure of a display device provided in an embodiment of the present application;

[0007] Figure 2 A structural schematic diagram of the connection relationship between the data line and the pixel provided in the embodiment of the present application;

[0008] Figure 3 Another structural schematic diagram of the connection relationship between data lines and pixels provided in an embodiment of the present application.

[0009] The reference numerals are as follows:

[0010] 100. Display device;

[0011] 11. Display panel;

[0012] 111, data line; 111A, data line; 111B, data line;

[0013] 112, scan line;

[0014] 113A, pixel repeating unit; 113, pixel; 1131, first pixel; 1132, second pixel; 1133, third pixel;

[0015] 12. Timing controller; 13. Gate driver; 14. Data driver;

[0016] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0018] Reference Figure 1 As shown, the display device 100 includes a display panel 11 , a timing controller 12 , a gate driver 13 and a data driver 14 .

[0019] Reference Figure 2 and Figure 3 As shown, the display panel 11 includes a plurality of data lines 111, a plurality of scan lines 112, and a plurality of pixels 113 arranged in an array. The plurality of data lines 111 and the plurality of scan lines 112 intersect each other in an insulated manner.

[0020] In some embodiments, the pixel 113 may include a non-active light-emitting device such as a liquid crystal display device. In other embodiments, the pixel 113 may also include an active light-emitting device such as an organic light-emitting diode or an inorganic light-emitting diode. Exemplarily, the pixel 113 includes a pixel 113 electrode and a liquid crystal of a liquid crystal display device, and in this case, the display panel 11 is a liquid crystal display panel 11.

[0021] In some embodiments, when the display panel 11 is a liquid crystal display panel 11, adjacent data lines 111 output data voltages of first polarity and second polarity with opposite polarities, respectively, to improve the problem of liquid crystal polarization. The first polarity may be one of positive polarity and negative polarity, and the second polarity may be the other of positive polarity and negative polarity. Exemplarily, the first polarity is "+" and the second polarity is "-".

[0022] It should be noted that, when the display panel 11 is a liquid crystal display panel 11, the display panel 11 further includes a common electrode (not shown in the figure). When the data voltage output by the data line 111 to the electrode of the pixel 113 is greater than the common voltage output by the common electrode, the data voltage output by the data line 111 is positive. On the contrary, when the data voltage output by the data line 111 to the electrode of the pixel 113 is less than the common voltage output by the common electrode, the data voltage output by the data line 111 is negative.

[0023] The gate driver 13 is connected to the plurality of scanning lines 112 to respectively output scanning signals to the plurality of scanning lines 112. The scanning signals include an on scanning signal and an off scanning signal.

[0024] The data driver 14 is connected to the plurality of data lines 111 to output data voltages to the plurality of data lines 111 , respectively.

[0025] Along the first direction X, the plurality of pixels 113 constitute a plurality of pixel rows, and one pixel row includes at least two pixels 113 arranged along the second direction Y. At least two pixels 113 of one pixel row are connected to one scan line 112. Along the second direction Y, the plurality of pixels 113 constitute a plurality of pixel columns. One pixel column includes at least two pixels 113 arranged along the first direction X. Each pixel 113 is connected to one data line 111. In some embodiments, at least two pixels 113 of one pixel column are connected to two data lines 111, respectively.

[0026] When the gate driver 13 outputs a turn-on scan signal to a scan line 112 , the scan line 112 is selected, and the data signal output by the data line 111 is output to at least two pixels 113 of the pixel row connected to the selected scan line 112 .

[0027] In some embodiments, the first direction X intersects the second direction Y. Exemplarily, the first direction X is perpendicular to the second direction Y.

[0028] In some embodiments, reference Figure 2 and Figure 3As shown, the plurality of pixel rows include a plurality of pixel row groups arranged along a first direction X. A pixel row group includes a first pixel row, a second pixel row, and a third pixel row arranged in sequence along the first direction X. The first pixel row includes at least two first pixels 1131 arranged along a second direction Y. The second pixel row includes at least two second pixels 1132 arranged along the second direction Y. The third pixel row includes at least two third pixels 1133 arranged along the second direction Y. The first pixel 1131, the second pixel 1132, and the third pixel 1133 are different from each other, for example, they are red pixels, green pixels, and blue pixels, respectively. The first pixel 1131, the second pixel 1132, and the third pixel 1133 located in a pixel column and a pixel row group constitute a pixel repeating unit 113A.

[0029] In some embodiments, reference Figure 2 As shown, two adjacent pixel repeating units 113A along the first direction X are respectively connected to two adjacent data lines 111. Two adjacent pixel repeating units 113A along the second direction Y are respectively connected to two adjacent data lines 111. Two adjacent data lines 111 transmit data voltages of the first polarity and the second polarity respectively.

[0030] In some embodiments, reference Figure 3 As shown, one pixel column includes a plurality of pixel repeating unit 113A pairs, and one pixel repeating unit 113A pair includes two adjacent pixel repeating units 113A. Two adjacent pixel repeating unit 113A pairs along the first direction X are respectively connected to two adjacent data lines 111. Two adjacent pixel repeating unit 113A pairs along the second direction Y are respectively connected to two adjacent data lines 111. Two adjacent data lines 111 transmit data voltages of a first polarity and a second polarity, respectively.

[0031] for Figure 2 and Figure 3 In the design shown, one data line 111 can output corresponding data voltages to the first pixel 1131 to the third pixel 1133 of one pixel repeating unit 113A, thereby reducing the number of data lines 111 and thereby reducing the number of overall channels of the data driver 14 .

[0032] The timing controller 12 is connected to the gate driver 13 and the data driver 14 to control the gate driver 13 to output a scan signal to the scan line 112 and to control the data driver 14 to output a data voltage to the data line 111. The timing controller 12 is also connected to the display panel 11.

[0033] In some embodiments, the timing controller 12 is configured to: determine the cumulative data of the coupling effect of the data voltage transmitted by the data line 111 adjacent to the pixel 113 to be compensated in the current frame in the previous frame and the current frame on the data voltage of the pixel 113 to be compensated in the current frame; determine the grayscale compensation value of the pixel 113 to be compensated in the current frame for multiple data lines 111 and multiple pixel columns based on the coupling effect cumulative data and the gain coefficient; and, based on the grayscale compensation value, compensate the original grayscale value of the pixel 113 to be compensated in the current frame to obtain the target grayscale value. In this way, the grayscale compensation value can reduce the deviation of the data voltage of the pixel 113 to be compensated due to the capacitive coupling of the adjacent data lines 111 in the adjacent frames, and improve the problem of uneven brightness of the screen caused by the capacitive coupling when the display panel 11 is displayed.

[0034] In some embodiments, determining the accumulated data of the coupling effect of the data voltage transmitted by the data line 111 adjacent to the pixel 113 to be compensated in the current frame in the previous frame and the current frame on the data voltage of the pixel 113 to be compensated in the current frame includes:

[0035] Determine accumulated data of a first coupling effect of data voltages transmitted by one or more left data lines adjacent to the pixel 113 to be compensated in the previous frame and the current frame on the data voltage of the pixel 113 to be compensated in the current frame;

[0036] Determine accumulated data of a second coupling effect of data voltages transmitted by one or more right data lines adjacent to the pixel 113 to be compensated in the previous frame and the current frame on the data voltage of the pixel 113 to be compensated in the current frame, wherein the pixel 113 to be compensated is located between the one or more left data lines and the one or more right data lines;

[0037] Based on the first total coupling influence data and the second total coupling influence data, total coupling influence accumulated data is obtained;

[0038] Based on the normalized benchmark data, the average benchmark data and the total coupling impact data, the coupling impact cumulative data is obtained.

[0039] In some embodiments of the present application, the total coupling influence data of the data voltage of the pixel 113 to be compensated is obtained based on the data voltage outputted by one or more data lines 111 on the left side and one or more data lines 111 on the right side of the pixel 113 to be compensated in two adjacent frames, and the first total coupling influence data and the second total coupling influence data are obtained respectively, taking into account the cumulative coupling capacitance of the data voltage of the pixel 113 to be compensated in the current frame due to the position relationship and time. In addition, the normalized reference data balances the contribution of the first total coupling influence data and the second total coupling influence data to the total coupling influence data, and the average reference data evenly distributes the total coupling influence data to the pixel 113 to be compensated. Therefore, the grayscale compensation value obtained based on the coupling influence cumulative data and the gain coefficient can better compensate for the offset of the data voltage caused by the adjacent data lines 111 of the pixel 113 to be compensated in the accumulated two frames, and improve the brightness unevenness of the display screen.

[0040] In some embodiments, determining accumulated data of first coupling effects of data voltages transmitted by one or more left data lines adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame includes:

[0041] Determine the first left coupling capacitor accumulated data of the data voltage of the pixel to be compensated in the current frame, which is transmitted by a first left data line adjacent to the pixel to be compensated in the previous frame and the current frame;

[0042] First coupling influence accumulation data is obtained based on the first left coupling capacitance accumulation data and the first left coupling influence coefficient of the first left data line on the pixel to be compensated.

[0043] In some embodiments of the present application, since the first left data line is the left data line closest to the pixel to be compensated, it has a greater influence on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling influence of the first left data line on the pixel to be compensated is the main influence of the multiple left data lines on the pixel to be compensated.

[0044] In some other embodiments, determining accumulated data of a first coupling effect of data voltages transmitted by one or more left data lines adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame includes:

[0045] Determine the first left coupling capacitor accumulated data of the data voltage of the pixel to be compensated in the current frame, which is transmitted by a first left data line adjacent to the pixel to be compensated in the previous frame and the current frame;

[0046] Determine the data voltage transmitted by a second left data line adjacent to the pixel to be compensated in the previous frame and the current frame and the second left coupling capacitor accumulates data of the data voltage of the pixel to be compensated in the current frame, the first left data line is located between the second left data line and the pixel to be compensated;

[0047] Obtain first left-side coupling influence accumulated data based on the first left-side coupling capacitance accumulated data and the first left-side coupling influence coefficient of the first left-side data line on the pixel to be compensated;

[0048] Obtain second left coupling influence accumulated data based on the second left coupling capacitance accumulated data and the second left coupling influence coefficient of the second left data line on the pixel to be compensated;

[0049] Based on the first left-side coupling influence accumulation data and the second left-side coupling influence accumulation data, the first coupling influence accumulation data is obtained.

[0050] In some embodiments of the present application, since the first left data line and the second left data line are the two left data lines closest to the pixel to be compensated, the two have a greater influence on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling influence of the first left data line and the second left data line on the pixel to be compensated can represent the total coupling influence of the left data lines on the pixel to be compensated.

[0051] In some embodiments, determining the data voltage outputted by a first left data line adjacent to the pixel to be compensated in the previous frame and the current frame to the first left coupling capacitor accumulated data of the data voltage of the pixel to be compensated in the current frame includes:

[0052] Determine the sum of data voltages output by the first left data line in the previous frame to obtain a first data voltage sum;

[0053] Determine the sum of the data voltages outputted by the first left data line in the current frame when the first left data line outputs the data voltage of the row where the pixel to be compensated is located, and obtain a second data voltage sum;

[0054] The first data voltage sum is added to the second data voltage sum to obtain first left coupling capacitance accumulation data.

[0055] In some embodiments, first coupling influence accumulation data is obtained based on the first left coupling capacitance accumulation data and the first left coupling influence coefficient of the first left data line on the pixel to be compensated, including:

[0056] Based on the difference between the first preset voltage cumulative data and the first left coupling capacitance cumulative data, the first left coupling cumulative deviation data is obtained; wherein the first preset voltage cumulative data is the product of the total number of scanning lines and the first data voltage, and the total number of scanning lines is (V total+i), the first voltage data is the data voltage of the pixel connected to the first left data line in the i-th row, and the i-th row is the pixel row where the pixel to be compensated is located, V total is the total number of scan lines, i represents the pixel row where the pixel to be compensated is located;

[0057] The first coupling influence accumulation data is obtained based on the product of the first left-side coupling accumulated deviation data and the first left-side coupling influence coefficient.

[0058] In some other embodiments, determining the data voltage transmitted by a second left data line adjacent to the pixel to be compensated in the previous frame and the current frame to the second left coupling capacitor accumulated data of the data voltage of the pixel to be compensated in the current frame includes:

[0059] Determine the sum of data voltages output by the second left data line in the previous frame to obtain a third data voltage sum;

[0060] Determine the sum of the data voltages outputted by the second left data line in the current frame when the second left data line outputs the data voltage of the row where the pixel to be compensated is located, and obtain a fourth data voltage sum;

[0061] The third data voltage sum is added to the fourth data voltage sum to obtain second left coupling capacitance accumulation data.

[0062] In some other embodiments, based on the accumulated data of the second left coupling capacitor and the second left data line, the second left coupling influence coefficient of the pixel to be compensated includes:

[0063] Based on the difference between the second preset voltage cumulative data and the second left coupling capacitance cumulative data, the second left coupling cumulative deviation data is obtained; wherein the second preset voltage cumulative data is the product of the total number of scanning lines and the second data voltage, and the total number of scanning lines is (V total +i), the second voltage data is the data voltage of the pixel connected to the second left data line in the i-th row, the i-th row is the pixel row where the pixel to be compensated is located, V total is the total number of scan lines, i represents the pixel row where the pixel to be compensated is located;

[0064] The second left-side coupling influence coefficient is obtained based on the product of the second left-side coupling accumulated deviation data and the second left-side coupling influence coefficient.

[0065] In some other embodiments, obtaining the first coupling influence accumulation data based on the first left-side coupling influence accumulation data and the second left-side coupling influence accumulation data includes:

[0066] The first left-side coupling influence accumulated data and the second left-side coupling influence accumulated data are added to obtain the first coupling influence accumulated data.

[0067] In some embodiments, determining accumulated data of a second coupling effect of data voltages transmitted by one or more right data lines adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame includes:

[0068] Determine the first right coupling capacitor accumulated data of the data voltage of the pixel to be compensated in the current frame, which is transmitted by a first right data line adjacent to the pixel to be compensated in the previous frame and the current frame;

[0069] Based on the first right coupling capacitance accumulated data and the first right coupling influence coefficient of the first right data line on the pixel to be compensated, second coupling influence accumulated data is obtained.

[0070] In some embodiments of the present application, since the first right data line is the closest right data line to the pixel to be compensated, it has a greater influence on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling influence of the first right data line on the pixel to be compensated is the main influence of multiple right data lines on the pixel to be compensated.

[0071] In some other embodiments, determining accumulated data of a second coupling effect of data voltages transmitted by one or more right data lines adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame includes:

[0072] Determine the first right coupling capacitor accumulated data of the data voltage of the pixel to be compensated in the current frame, which is transmitted by a first right data line adjacent to the pixel to be compensated in the previous frame and the current frame;

[0073] Determine the data voltage transmitted by a second right data line adjacent to the pixel to be compensated in the previous frame and the current frame to accumulate data of the second right coupling capacitor of the data voltage of the pixel to be compensated in the current frame, the first right data line is located between the second right data line and the pixel to be compensated;

[0074] Obtain first right-side coupling influence accumulated data based on the first right-side coupling capacitor accumulated data and the first right-side coupling influence coefficient of the first right-side data line on the pixel to be compensated;

[0075] Based on the second right coupling capacitance accumulated data and the second right coupling influence coefficient of the second right data line on the pixel to be compensated, second right coupling influence accumulated data is obtained;

[0076] Based on the first right-side coupling influence accumulation data and the second right-side coupling influence accumulation data, second coupling influence accumulation data is obtained.

[0077] In some embodiments of the present application, since the first right data line and the second right data line are the two right data lines closest to the pixel to be compensated, the two have a greater influence on the data voltage of the pixel to be compensated in the current frame. Therefore, the coupling influence of the first right data line and the second right data line on the pixel to be compensated can represent the total coupling influence of the right data lines on the pixel to be compensated.

[0078] In some embodiments, determining the first right coupling capacitor accumulation data of the data voltage of the pixel to be compensated in the current frame transmitted by a first right data line adjacent to the pixel to be compensated in the previous frame and the current frame includes:

[0079] Determine the sum of data voltages output by the first right data line in a previous frame to obtain a fifth data voltage sum;

[0080] Determine the sum of the data voltages output by the first right data line in the current frame when the data voltage of the row where the pixel to be compensated is located, and obtain a sixth data voltage sum;

[0081] The fifth data voltage sum is added to the sixth data voltage sum to obtain first right-side coupling capacitance accumulated data.

[0082] In some embodiments, based on the first right coupling capacitance accumulated data and the first right coupling influence coefficient of the first right data line on the pixel to be compensated, the second coupling influence accumulated data is obtained, including:

[0083] Based on the difference between the third preset voltage cumulative data and the first right coupling capacitor cumulative data, the first right coupling cumulative deviation data is obtained; wherein the third preset voltage cumulative data is the product of the total number of scanning lines and the third data voltage, and the total number of scanning lines is (V total +i), the third voltage data is the data voltage of the pixel connected to the first right data line in the i-th row, and the i-th row is the pixel row where the pixel to be compensated is located, V total is the total number of scan lines, i represents the pixel row where the pixel to be compensated is located;

[0084] Second coupling influence accumulation data is obtained based on the product of the first right-side coupling accumulated deviation data and the first right-side coupling influence coefficient.

[0085] In some other embodiments, determining the data voltage transmitted by a second right data line adjacent to the pixel to be compensated in the previous frame and the current frame to the second right coupling capacitor accumulated data of the data voltage of the pixel to be compensated in the current frame includes:

[0086] Determine the sum of data voltages output by the second right data line in the previous frame to obtain a seventh data voltage sum;

[0087] Determine the sum of the data voltages output by the second right data line in the current frame when the second right data line outputs the data voltage of the row where the pixel to be compensated is located, and obtain an eighth data voltage sum;

[0088] The seventh data voltage sum is added to the eighth data voltage sum to obtain second right-side coupling capacitance accumulated data.

[0089] In some other embodiments, the first right-side coupling influence accumulated data is the product of the first right-side coupling capacitance accumulated data and the first right-side coupling influence coefficient.

[0090] In some other embodiments, the second right-side coupling influence accumulated data is the product of the second right-side coupling capacitance accumulated data and the second right-side coupling influence coefficient.

[0091] In some other embodiments, the second coupling influence accumulated data is the sum of the first right-side coupling influence accumulated data and the second right-side coupling influence accumulated data.

[0092] It should be noted that the first left-side coupling influence coefficient, the second left-side coupling influence coefficient, the first right-side coupling influence coefficient, and the fourth right-side coupling influence coefficient respectively characterize the relative size difference of the data voltage output by the corresponding data line on the coupling capacitance, that is, the influence degree of different data lines on the total coupling influence data is taken into account. For example, if the first left-side coupling influence coefficient is greater than the first right-side coupling influence coefficient, it means that the data voltage output by the first left-side data line has a greater influence on the coupling capacitance of the pixel to be compensated 113. On the contrary, if the first right-side coupling influence coefficient is greater than the first left-side coupling influence coefficient, it means that the data voltage output by the first right-side data line has a greater influence on the coupling capacitance of the pixel to be compensated 113.

[0093] In an exemplary embodiment, when the first total coupling influence data is the product of the first left coupling capacitance accumulated data and the first left coupling influence coefficient, and the second coupling influence accumulated data is the product of the first right coupling capacitance accumulated data and the first right coupling influence coefficient, the first left coupling influence coefficient and the first right coupling influence coefficient have a value range of 0 to 256. The sum of the first left coupling influence coefficient and the first right coupling influence coefficient is equal to 256. If the first left coupling influence coefficient and the first right coupling influence coefficient are both equal to 128, it indicates that the first left coupling capacitance accumulated data and the first right coupling capacitance accumulated data have the same degree of influence on the coupling capacitance of the pixel to be compensated 113. If the first left coupling influence coefficient is greater than 128, it indicates that the data voltage output by the first left data line has a greater degree of influence on the coupling capacitance of the pixel to be compensated 113. On the contrary, if the first right coupling influence coefficient is greater than 128, it indicates that the data voltage output by the first right data line has a greater degree of influence on the coupling capacitance of the pixel to be compensated 113.

[0094] In another exemplary embodiment, when the first total coupling influence data is the sum of the first left-side coupling influence cumulative data and the second left-side coupling influence cumulative data, and the second coupling influence cumulative data is the sum of the first right-side coupling influence cumulative data and the second right-side coupling influence cumulative data, the first left-side coupling influence coefficient, the second left-side coupling influence coefficient, the first right-side coupling influence coefficient, and the fourth right-side coupling influence coefficient have a value range of 0 to 256. The sum of the first left-side coupling influence coefficient, the second left-side coupling influence coefficient, the first right-side coupling influence coefficient, and the fourth right-side coupling influence coefficient is equal to 256.

[0095] In some embodiments, based on the normalized reference data, the averaged reference data and the total coupling influence data, the coupling influence cumulative data is obtained, including: dividing the total coupling influence data by the normalized reference data and the averaged reference data to obtain the coupling influence cumulative data. In this way, the total coupling influence data is normalized and averaged.

[0096] In some embodiments, when the first total coupling influence data is the product of the first left-side coupling capacitance accumulated data and the first left-side coupling influence coefficient, and the second coupling influence accumulated data is the product of the first right-side coupling capacitance accumulated data and the first right-side coupling influence coefficient, the normalized reference data is equal to the sum of the first left-side coupling influence coefficient and the first right-side coupling influence coefficient.

[0097] In some embodiments, when the first total coupling influence data is the sum of the first left-side coupling influence cumulative data and the second left-side coupling influence cumulative data, and the second coupling influence cumulative data is the sum of the first right-side coupling influence cumulative data and the second right-side coupling influence cumulative data, the normalized reference data is equal to the sum of the first left-side coupling influence coefficient, the second left-side coupling influence coefficient, the first right-side coupling influence coefficient and the fourth right-side coupling influence coefficient.

[0098] In some embodiments, the average reference data is equal to the total number of the scan lines 112 of the display panel 11 , but is not limited thereto.

[0099] In some embodiments, the original grayscale value of the pixel to be compensated 113 in the current frame is compensated based on the grayscale compensation value to obtain a target grayscale value, including:

[0100] Based on the first grayscale compensation value, the first pixel to be compensated 113 connected to the data line 111 transmitting the data voltage of the first polarity is compensated for the first original grayscale value in the current frame to obtain a first target grayscale value, wherein the first target grayscale value is greater than the first original grayscale value;

[0101] Based on the second grayscale compensation value, the second pixel to be compensated 113 connected to the data line 111 transmitting the data voltage of the second polarity is compensated for the second original grayscale value in the current frame to obtain a second target grayscale value, the second target grayscale value is less than the second original grayscale value, and the second polarity is opposite to the first polarity.

[0102] In some embodiments of the present application, the first pixel to be compensated 113 and the second pixel to be compensated 113 connected to two data lines 111 that output data voltages of different polarities are respectively compensated in the opposite direction, so as to reversely compensate the bright and dark pixels 113, thereby improving the uneven brightness of the display panel 11. In particular, when the display panel 11 adopts Figure 2 and Figure 3 When the driving structure is shown, the horizontal stripe problem of the display panel 11 caused by uneven brightness can be improved.

[0103] It should be noted that the timing controller 12 is also configured to determine the first pixel 113 to be compensated and the second pixel 113 to be compensated based on the polarity of the data voltage transmitted by the data line 111 connected to each of the multiple pixels 113 in the current frame and the connection relationship between the pixels 113 in the pixel column and the data line 111.

[0104] In some embodiments, determining the grayscale compensation value of the pixel to be compensated 113 in the current frame based on the coupling influence accumulated data and the gain coefficient includes: determining the product of the coupling influence accumulated data and the gain coefficient as the grayscale compensation value of the pixel to be compensated 113 in the current frame. In this way, the compensation effect of the grayscale compensation value on the pixel to be compensated 113 is improved.

[0105] In some embodiments, the timing controller 12 is further configured to: determine the original grayscale data of each of the multiple pixels 113 in the previous frame in the previous frame as the target grayscale data of the pixel 113 in the previous frame. In this way, the multiple pixels 113 in the previous frame realize the screen display of the previous frame based on the original grayscale data. Therefore, taking the display process of two adjacent frames as a compensation cycle, the original grayscale data of the pixel 113 in the previous frame is not compensated, and the original grayscale data of the pixel 113 to be compensated in the current frame is compensated.

[0106] It should be noted that the timing controller 12 also includes a memory (not shown in the figure). The memory stores the coupling influence coefficient and the gain coefficient of the pixel 113 to be compensated. In some embodiments, the coupling influence coefficient may include a first left coupling influence coefficient and a first right coupling influence coefficient. In other embodiments, the coupling influence coefficient may include a first left coupling influence coefficient, a second left coupling influence coefficient, a first right coupling influence coefficient, and a second right coupling influence coefficient.

[0107] The coupling influence coefficient and gain coefficient of the pixel 113 to be compensated are obtained by adjusting the pure color picture with uneven brightness to make the horizontal stripe phenomenon lighter.

[0108] Specifically, when the display panel 11 displays a pure color picture, multiple areas are divided according to the brightness of the pure color picture, and the target area is determined from the multiple areas. Then, the initial first left coupling influence coefficient and the initial gain coefficient are set for the target area. The initial first left coupling influence coefficient and the initial gain coefficient are adjusted until the brightness and darkness unevenness of the target area becomes slight, and the first left coupling influence coefficient and the initial gain coefficient of the target area can be obtained. Among them, the target area can be the central area of ​​the display panel 11.

[0109] After debugging the horizontal stripes in the target area, switch back and forth between the states before and after debugging. Observe the severity of the horizontal stripes in other areas of the panel. If the brightness unevenness problem of horizontal stripes in other areas is also slight, it means that the first left coupling influence coefficient of the target area can be used in this area. If the brightness unevenness problem of horizontal stripes in other areas is slighter than before debugging but is still visible, it means that the compensation value is not enough, and it is necessary to continue to make the same compensation based on the first left coupling influence coefficient of the target area. For example, the first left coupling influence coefficient is obtained by adding 30 to 128. At this time, 20 can be added to 158; if the brightness unevenness problem of horizontal stripes in other areas is more serious than before debugging, that is, it is wrong compensation, and it is necessary to add or subtract in the opposite direction of the original compensation direction.

[0110] The following is combined with the grayscale compensation value G of the pixel 113 to be compensated connected to the i-th scan line and the j-th data line in the current frame. ij The calculation process is explained below.

[0111] First, the grayscale data of the previous frame image is used to obtain the voltage data of the image through the panel grayscale-voltage correspondence relationship; then the voltage data of the two data lines 111 adjacent to the pixel 113 to be compensated connected to the i-th row scan line 112 and the j-th data line 111 are accumulated.

[0112]

[0113] Among them, S j(j＝2:2:ImgW-2,Frame＝1) is the sum of the voltage data of the data voltage transmitted by the first left data line 111A adjacent to the pixel 113 to be compensated in the previous frame, S j(j＝3:2:ImgW-1,Frame＝1) G is the voltage data sum of the data voltage transmitted by the first right data line 111B adjacent to the pixel to be compensated 113 in the previous frame. The polarity of the data voltage transmitted by the first left data line 111A is opposite to the polarity of the data voltage transmitted by the first right data line 111B. R , G G and G BThe grayscale data of the red pixel, green pixel and blue pixel in the previous frame respectively. (ij，Frame＝1) (G R ) is equal to the data voltage corresponding to the grayscale data of the red pixel in the previous frame. V (ij，Frame＝1) (G G ) and V (ij，Frame＝1) (G B ) and so on, which will not be described in detail here. Vtotal is equal to the total number of scan lines 112.

[0114] Next, the grayscale data of the current frame is used to obtain the voltage data of the image through the panel grayscale-voltage correspondence relationship, and then the data voltages output by the two data lines 111 adjacent to the pixel to be compensated 113 connected to the i-th row scan line and the j-th data line in the current frame are accumulated. The calculation formula is as follows:

[0115]

[0116] Among them, S ij = equal to the voltage data output in the current frame when the first left data line outputs the data voltage corresponding to the pixel in the i-th row and the voltage data output in the current frame and S j(j＝2:2:ImgW-2,Frame＝1) The sum of S i，j+1 = equal to the voltage data output in the current frame when the first right data line outputs the data voltage corresponding to the pixel 113 in the i-th row and the voltage data outputted by S j(j＝3:2:ImgW-1,Frame＝1) The sum of V (kj，Frame＝2) (G R ) is equal to the data voltage corresponding to the grayscale data of the red pixel in the current frame. V (kj，Frame＝2) (G G ) and V (kj，Frame＝2) (G B ) and so on, which can be deduced and will not be elaborated here.

[0117] Finally, the formula for calculating the grayscale compensation value of the pixel to be compensated 113 in the current frame is as follows:

[0118]

[0119] Among them, a ij is the first left side coupling influence coefficient. 256-a ij is the first right-side coupling influence coefficient. Gain(color,G ij ) is the gain coefficient. ΔG ij V(G) is the grayscale compensation value of the pixel to be compensated 113 in the current frame. ij ) is the data voltage of the pixel connected to the first left data line 111A in the i-th row of pixels. i,j+1) is the data voltage of the pixel connected to the first right data line in the i-th row of pixels. Vtotal is equal to the total number of scan lines 112. i represents the row number where the i-th row of pixels is located. 256 is the average reference data.

[0120] The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technical personnel in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized in that: include: A display panel, comprising a plurality of data lines and a plurality of pixel columns, wherein one pixel column is located between adjacent data lines and comprises at least two pixels; as well as A timing controller is connected to the display panel and is configured as follows: Determine accumulated data of coupling effects of data voltages transmitted by a data line adjacent to a pixel to be compensated in a current frame in a previous frame before the current frame and in the current frame on a data voltage of the pixel to be compensated in the current frame; Determine the grayscale compensation values ​​of the pixels to be compensated for the plurality of data lines and the plurality of pixel columns in the current frame based on the coupling influence accumulated data and the gain coefficient; The original grayscale value of the pixel to be compensated in the current frame is compensated based on the grayscale compensation value to obtain a target grayscale value.

2. The display device according to claim 1, characterized in that The step of determining accumulated data of coupling effects of data voltages transmitted by a data line adjacent to a pixel to be compensated in a current frame in a previous frame before the current frame and in the current frame on a data voltage of the pixel to be compensated in the current frame comprises: Determine accumulated data of first coupling effects of data voltages transmitted by one or more left data lines adjacent to the pixel to be compensated in the previous frame and the current frame on the data voltage of the pixel to be compensated in the current frame; Determine accumulated data of a second coupling influence of a data voltage transmitted by one or more right-side data lines adjacent to a pixel to be compensated in the previous frame and the current frame on a data voltage of the pixel to be compensated in the current frame, the pixel to be compensated being located between the one or more left-side data lines and the one or more right-side data lines; Obtaining total coupling influence accumulated data based on the first total coupling influence data and the second total coupling influence data; The coupling influence cumulative data is obtained based on the normalized benchmark data, the averaged benchmark data and the total coupling influence data.

3. The display device according to claim 2, characterized in that: The step of determining accumulated data of a first coupling effect of a data voltage transmitted by one or more left data lines adjacent to the pixel to be compensated in the previous frame and the current frame on a data voltage of the pixel to be compensated in the current frame comprises: Determine the first left coupling capacitor accumulated data of the data voltage transmitted by a first left data line adjacent to the pixel to be compensated in the previous frame and the current frame to the data voltage of the pixel to be compensated in the current frame; The first coupling influence accumulated data is obtained based on the first left coupling capacitance accumulated data and the first left coupling influence coefficient of the first left data line on the pixel to be compensated.

4. The display device according to claim 2, characterized in that: The step of determining accumulated data of a first coupling effect of a data voltage transmitted by one or more left data lines adjacent to the pixel to be compensated in the previous frame and the current frame on a data voltage of the pixel to be compensated in the current frame comprises: Determine the first left coupling capacitor accumulated data of the data voltage transmitted by a first left data line adjacent to the pixel to be compensated in the previous frame and the current frame to the data voltage of the pixel to be compensated in the current frame; Determine the second left coupling capacitor accumulation data of the data voltage transmitted by a second left data line adjacent to the pixel to be compensated in the previous frame and the current frame to the data voltage of the pixel to be compensated in the current frame, the first left data line being located between the second left data line and the pixel to be compensated; Obtaining first left-side coupling influence accumulated data based on the first left-side coupling capacitance accumulated data and a first left-side coupling influence coefficient of the first left-side data line on the pixel to be compensated; Obtaining second left coupling influence accumulated data based on the second left coupling capacitance accumulated data and the second left coupling influence coefficient of the second left data line on the pixel to be compensated; The first coupling influence accumulated data is obtained based on the first left-side coupling influence accumulated data and the second left-side coupling influence accumulated data.

5. The display device according to claim 2, characterized in that: The step of determining accumulated data of a second coupling effect of a data voltage transmitted by one or more right-side data lines adjacent to the pixel to be compensated in the previous frame and the current frame on a data voltage of the pixel to be compensated in the current frame comprises: Determine the first right coupling capacitor accumulated data of the data voltage transmitted by a first right data line adjacent to the pixel to be compensated in the previous frame and the current frame to the data voltage of the pixel to be compensated in the current frame; The second coupling influence accumulated data is obtained based on the first right coupling capacitance accumulated data and the first right coupling influence coefficient of the first right data line on the pixel to be compensated.

6. The display device according to claim 2, characterized in that: The step of determining accumulated data of a second coupling effect of a data voltage transmitted by one or more right-side data lines adjacent to the pixel to be compensated in the previous frame and the current frame on a data voltage of the pixel to be compensated in the current frame comprises: Determine the first right coupling capacitor accumulated data of the data voltage transmitted by a first right data line adjacent to the pixel to be compensated in the previous frame and the current frame to the data voltage of the pixel to be compensated in the current frame; Determine the second right coupling capacitor accumulation data of the data voltage transmitted by a second right data line adjacent to the pixel to be compensated in the previous frame and the current frame to the data voltage of the pixel to be compensated in the current frame, wherein the first right data line is located between the second right data line and the pixel to be compensated; Obtaining the first right-side coupling influence accumulated data based on the first right-side coupling capacitor accumulated data and the first right-side coupling influence coefficient of the first right-side data line on the pixel to be compensated; Based on the second right-side coupling capacitor accumulated data and the second right-side coupling influence coefficient of the second right-side data line on the pixel to be compensated, the second right-side coupling influence accumulated data is obtained; The second coupling influence accumulated data is obtained based on the first right-side coupling influence accumulated data and the second right-side coupling influence accumulated data.

7. The display device according to claim 2, characterized in that: The step of obtaining the coupling impact accumulation data based on the normalized benchmark data, the averaged benchmark data and the total coupling impact data includes: The total coupling impact data is divided by the normalized benchmark data and the average benchmark data to obtain the coupling impact cumulative data.

8. The display device according to claim 2, characterized in that: The average reference data is equal to the total number of scan lines of the display panel.

9. The display device according to claim 1, characterized in that: The compensating the original grayscale value of the pixel to be compensated in the current frame based on the grayscale compensation value to obtain a target grayscale value includes: Based on the first grayscale compensation value, a first pixel to be compensated connected to a data line transmitting a data voltage of a first polarity is compensated at a first original grayscale value of the current frame to obtain a first target grayscale value, wherein the first target grayscale value is greater than the first original grayscale value; Based on the second grayscale compensation value, the second pixel to be compensated, which is connected to the data line transmitting the data voltage of the second polarity, is compensated for the second original grayscale value of the current frame to obtain a second target grayscale value, wherein the second target grayscale value is less than the second original grayscale value, and the second polarity is opposite to the first polarity.

10. The display device according to any one of claims 1 to 9, characterized in that: The timing controller is further configured to determine original grayscale data of each of the plurality of pixels in the previous frame in the previous frame as target grayscale data of the pixel in the previous frame.

11. The display device according to claim 1, characterized in that: At least two pixels in one pixel column are connected to two data lines respectively.

Images