Display panel driving method, driving circuit and display device

Abstract

This invention proposes a driving method, driving circuit, and display device for a display panel. In the driving method, upon receiving a first selection signal, grayscale data to be output to the display panel in each row is acquired. Starting from the first column, the total value of positive and negative grayscale data is calculated, and a first difference between the two total values ​​is calculated. This first difference is compared with a standard threshold. If the first difference exceeds the standard threshold, the standard threshold for the next comparison is increased. The grayscale data in the next column corresponding to the current first difference is then subjected to polarity reversal until the grayscale data in the last column is counted and compared. Through multiple comparisons and multiple local polarity adjustments, the polarity balance of the grayscale data of the sub-pixels in each row of the display panel is achieved, eliminating poor coupling to the common electrode and eliminating horizontal crosstalk, thereby improving the display effect of the display panel.

Description

Technical Field

[0001] This invention belongs to the field of display panel technology, and particularly relates to a driving method, driving circuit and display device for a display panel. Background Technology

[0002] TFT-LCD (Thin Film Transistor Liquid Crystal Display) is one of the main types of flat panel displays and has become an important display platform in modern IT and visual products.

[0003] Display panels typically have a common electrode to provide a common electrode voltage signal. When the display panel's driving circuit outputs display data, the common electrode may be coupled by specific display data, causing voltage changes and thus horizontal crosstalk.

[0004] To address the horizontal crosstalk problem caused by data coupling, the conventional approach is to set up a compensation circuit. This circuit acquires the voltage of the common electrode, compares it with the target common electrode voltage, and generates a compensation signal to compensate the common electrode, thus offsetting the poor coupling caused by the display data of a specific screen. This approach requires setting up detection lines, compensation lines, and corresponding compensation circuits in the display panel, which complicates the structure of the display panel and increases the circuit cost. Summary of the Invention

[0005] The purpose of this invention is to provide a driving method for a display panel, which aims to solve the problems of high cost and complex structure of traditional methods for eliminating poor coupling.

[0006] A first aspect of this invention provides a method for driving a display panel, comprising:

[0007] The line scan signal is output to the display panel line by line, and when the first selection signal is obtained, the multi-column grayscale data of each line to be output to the display panel is obtained;

[0008] Starting from the first column of grayscale data in each row, count the first total value of positive grayscale data and the second total value of negative grayscale data column by column, and calculate the first difference between the first total value and the second total value.

[0009] The first difference is compared with a standard threshold, and the current standard threshold is dynamically increased every time the first difference exceeds the standard threshold. The grayscale data of the next column corresponding to the current first difference is reversed to the subsequent grayscale data. The next first difference is compared with the increased standard threshold, and the polarity of the subsequent column is reversed according to the comparison result.

[0010] The grayscale data of each column after polarity reversal is output to the display panel.

[0011] Optionally, the second difference between two adjacent standard thresholds is equal to the initial standard threshold.

[0012] Optionally, the step of counting the first total value of positive grayscale data and the second total value of negative grayscale data column by column, starting from the first column of each row, and calculating the first difference between the first total value and the second total value, includes:

[0013] The determination begins with the grayscale data in the first column of each row;

[0014] When the grayscale data in the corresponding column is of positive polarity, the grayscale data of each positive polarity are summed in turn to obtain the first total value;

[0015] When the grayscale data in the corresponding column is of negative polarity, the grayscale data of each negative polarity are summed in turn to obtain the second total value;

[0016] The first total value and the second total value are compared numerically in sequence to obtain multiple first differences.

[0017] Optionally, before outputting the grayscale data of each column after polarity reversal to the display panel, the method further includes:

[0018] The third total value is obtained by summing the grayscale data corresponding to each column of the current row after polarity reversal, and it is then determined whether the third total value tends to 0.

[0019] When the third total value approaches 0, it is determined that the current display row is approaching polarity balance;

[0020] When the third total value deviates from 0, the polarity bias of the current display row is determined.

[0021] Optionally, the driving method for the display panel further includes:

[0022] The standard threshold of different sizes is selected based on the threshold selection signal, and the size of the standard threshold is negatively correlated with the refresh rate of the current display screen.

[0023] Optionally, after the line scan signal is output line by line to the display panel, the method further includes:

[0024] When the second selection signal is received, the grayscale data of each column of each row is selected to be output to the display panel according to the original set polarity.

[0025] A second aspect of this invention provides a driving circuit for a display panel, comprising:

[0026] Gate driving circuit, used to output line scan signals to the display panel line by line;

[0027] Source drive circuit, including:

[0028] A polarity inversion circuit, connected to a timing controller, is used to acquire grayscale data, a first selection signal, and a second selection signal for each row. The polarity inversion circuit is used to determine the polarity of the grayscale data of each column in each row according to the driving method of the display panel described above, and output a polarity control signal.

[0029] A shift register, connected to the polarity inversion circuit, is used to store the polarity control signal and generate corresponding multi-channel polarity selection signals;

[0030] The driving circuit is connected to the polarity inversion circuit, the shift register and the display panel respectively. The driving circuit is used to output the grayscale data of each row to the display panel according to the preset polarity based on the multi-channel polarity selection signal.

[0031] Optionally, the polarity reversal circuit includes:

[0032] The polarity determination unit is used to determine the polarity of each row of grayscale data. When the grayscale data of the corresponding column is positive, the positive polarity grayscale data is output through the first transmission channel. When the grayscale data of the corresponding column is negative, the negative polarity grayscale data is output through the second transmission channel.

[0033] The first adder is connected to the first transmission channel of the polarity determination unit and is used to receive grayscale data of each positive polarity and sum them to obtain a first total value.

[0034] The second adder is connected to the second transmission channel of the polarity determination unit and is used to receive grayscale data of each negative polarity and sum them to obtain a second total value.

[0035] A subtractor, connected to the first adder and the second adder respectively, is used to compare the first total value and the second total value to obtain the first difference value;

[0036] A comparator, connected to the subtractor, is used to compare the first difference with a corresponding standard threshold and output a comparison signal;

[0037] A polarity control unit, connected to the comparator, is used to output a first polarity control signal based on the comparison signal;

[0038] The selector is connected to the polarity control unit and the timing controller respectively. The timing controller is used to output a second polarity control signal. The selector is used to select to output the first polarity control signal to the shift register when a first selection signal is obtained, or to select to output the second polarity control signal to the shift register when a second selection signal is obtained.

[0039] A memory for storing the first selection signal and / or the second selection signal.

[0040] Optionally, the polarity reversal circuit further includes:

[0041] A threshold selector has multiple input terminals for inputting standard thresholds of different sizes, and its output terminal is connected to the comparator. The threshold selector is used to select and output standard thresholds of different sizes to the comparator according to a threshold selection signal. The size of the standard threshold is negatively correlated with the refresh rate of the current display screen.

[0042] A third aspect of the present invention provides a display device, including a display panel and a driving circuit for the display panel as described above, wherein the driving circuit for the display panel is connected to the display panel.

[0043] The beneficial effects of the present invention embodiments compared with the prior art are as follows: In the above-mentioned display panel driving method, when the first selection signal is obtained, the grayscale data to be output to the display panel in each row is obtained, and the total value of positive polarity grayscale data and negative polarity grayscale data is counted starting from the first column. The first difference between the two total values ​​is calculated, and the first difference is compared with a standard threshold. When the first difference exceeds the standard threshold, the standard threshold for the next comparison is increased, and the grayscale data in the next column corresponding to the current first difference is reversed to the subsequent grayscale data. This process continues until the grayscale data in the last column is counted and compared. Through multiple comparisons and multiple local polarity adjustments, the polarity balance of the grayscale data of the sub-pixels in each row of the display panel is achieved, eliminating poor coupling to the common electrode and eliminating horizontal crosstalk, thereby improving the display effect of the display panel. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of a first structure of a display panel provided in Embodiment 1 of the present invention;

[0045] Figure 2 This is a schematic diagram of a second structure of the display panel provided in Embodiment 1 of the present invention;

[0046] Figure 3 This is a schematic diagram of a first-order process for driving a display panel according to Embodiment 1 of the present invention.

[0047] Figure 4 This is Embodiment 1 of the present invention. Figure 3 The flowchart of step S20 in the driving method of the display panel shown is as follows;

[0048] Figure 5This is a schematic diagram of a second process for driving a display panel according to Embodiment 2 of the present invention;

[0049] Figure 6 This is a schematic diagram of the driving circuit for the display panel provided in Embodiment 4 of the present invention;

[0050] Figure 7 This is a schematic diagram of the source drive circuit provided in Embodiment 4 of the present invention;

[0051] Figure 8 This is a schematic diagram of the structure of the driving unit provided in Embodiment 4 of the present invention;

[0052] Figure 9 This is a schematic diagram of the first structure of the polarity control circuit provided in Embodiment 4 of the present invention;

[0053] Figure 10 This is a schematic diagram of a second structure of the polarity control circuit provided in Embodiment 4 of the present invention.

[0054] The figures in the diagram are labeled as follows:

[0055] 100. Display panel; 200. Driving circuit for display panel; 10. Sub-pixel; 210. Source driving circuit; 220. Gate driving circuit; 230. Timing controller; 211. Polarity inversion circuit; 212. Shift register; 213. Driving circuit; 2131. Driving unit; 11. Input selection switch; 12. Positive polarity digital-to-analog converter; 13. Negative polarity digital-to-analog converter; 14. Output selection switch; 201. Polarity determination unit; 202. First adder; 203. Second adder; 204. Subtractor; 205. Comparator; 206. Polarity control unit; 207. Selector; 208. Memory; 209. Threshold selector;

[0056] S1, First data line; S2, Second data line; S3, Third data line; S4, Fourth data line; S5, Fifth data line; S6, Sixth data line; S7, Seventh data line; G1, First scan line; G2, Second scan line; G3, Third scan line; G4, Fourth scan line;

[0057] TP1, output signal of shift register; Yn, output signal of polarity inversion circuit; ref0, standard threshold; ref0_1, first standard threshold; ref0_2, second standard threshold. Detailed Implementation

[0058] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] Example 1

[0061] A first aspect of this invention provides a driving method for a display panel 100, applicable to different types of display panels 100, such as... Figure 1 As shown, a display panel 100 applicable to a single-line drive architecture is provided. The display panel 100 includes multiple sub-pixels 10, multiple scan lines, and multiple data lines. For example, the multiple data lines include a first data line S1, a second data line S2, a third data line S3, a fourth data line S4, a fifth data line S5, a sixth data line S6, a seventh data line S7, etc., and the multiple scan lines include a first scan line G1, a second scan line G2, etc. The multiple sub-pixels 10 in the same row are connected to the same scan line, the multiple sub-pixels 10 in the same row are connected to the multiple data lines one by one, and the multiple sub-pixels 10 in the same column are alternately connected to the two adjacent data lines on both sides.

[0062] In normal driving mode, multiple scan lines output row scan signals one by one. When scanning a row, the polarity of the data lines of adjacent columns is reversed.

[0063] For example, when scanning to each sub-pixel 10 in the first row, the polarity of each column of data lines alternates between positive and negative. At the same time, the polarity of each column of data lines can also be flipped according to the frame flipping mode. For example, in the previous frame, the polarity of each column of data lines in one row alternates between positive and negative, and in the next frame, the polarity of each column of data lines in that row alternates between negative and positive.

[0064] The driving method for display panel 100 can also be applied to display panel 100 with a dual-grid driving architecture, such as... Figure 2As shown, the display panel 100 includes multiple sub-pixels 10, multiple data lines, and multiple scan lines. For example, the multiple data lines include a first data line S1, a second data line S2, a third data line S3, etc., and the multiple scan lines include a first scan line G1, a second scan line G2, a third scan line G3, a fourth scan line G4, etc. Two adjacent columns of sub-pixels 10 are arranged between two adjacent data lines, and two scan lines are arranged between two adjacent rows of sub-pixels 10. Multiple sub-pixels 10 in the same row are cross-connected to two adjacent scan lines above and below, and each data line is connected to two adjacent columns of sub-pixels 10 on both sides.

[0065] During progressive scanning, multiple scan lines output row scan signals sequentially. Specifically, the scan lines of the first row output row scan signals to activate an odd number of sub-pixels (10) in the first row, and the polarity of each column's data lines alternates between positive and negative. For example... Figure 2 As shown, the grayscale data input to the first and fifth sub-pixels of the first row are positive, while the third sub-pixel of the first row is negative. When scanning to the next row, the polarity of each column of data lines alternates between negative and positive, that is, the second and sixth sub-pixels of the first row are negative, and the fourth sub-pixel of the first row is positive.

[0066] In progressive scanning, multiple data lines input grayscale data. The grayscale data in each column have numerical differences and polarity differences. When the values ​​of the positive and negative polarity grayscale data are unbalanced, it will cause poor coupling of the common electrode, which will lead to horizontal crosstalk problems.

[0067] To solve this problem, such as Figure 3 As shown, the driving method for the display panel 100 includes:

[0068] S10. Output the line scan signal to the display panel 100 line by line, and acquire the multi-column grayscale data of each line to be output to the display panel 100 when the first selection signal is acquired;

[0069] S20. Starting from the grayscale data in the first column of each row, count the first total value of the positive grayscale data and the second total value of the negative grayscale data column by column, and calculate the first difference between the first total value and the second total value.

[0070] S30. Compare the first difference with the standard threshold ref0, and dynamically increase the current standard threshold ref0 whenever the first difference exceeds the standard threshold ref0. Also, reverse the polarity of the grayscale data of the next column corresponding to the current first difference to the subsequent grayscale data, and compare the next first difference with the increased standard threshold ref0. Also, determine whether to reverse the polarity of the subsequent column based on the comparison result.

[0071] S40. Output the grayscale data of each column after polarity reversal to the display panel 100.

[0072] In this embodiment, when the scan line inputs the line scan signal line by line, the acquired multi-column grayscale data to be output to the display panel 100 for each line is the multi-column grayscale data corresponding to each line scan signal. For example, when the display panel 100 is... Figure 1 When the display panel 100 is a single-line drive architecture, the multi-column grayscale data in each row can include the first to sixth grayscale data input from six data lines. Figure 2 When the display panel 100 with the dual-grid-line driving architecture is shown, the grayscale data of each row consists of three grayscale data of half of the sub-pixels 10. For example, when scanning to the first scan line G1, the grayscale data of the first sub-pixel, the third sub-pixel and the fifth sub-pixel of the first row are obtained. When scanning to the second scan line G2, the grayscale data of the second sub-pixel, the fourth sub-pixel and the sixth sub-pixel of the first row are obtained.

[0073] by Figure 1 Taking the driving architecture as an example, the system obtains multiple columns of grayscale data to be output to the display panel 100 from the timing controller 230, and successively sums the positive grayscale data of each column to obtain a first total value, and successively sums the negative grayscale data of each column to obtain a second total value. Simultaneously, the two total values ​​are compared in real time, and the first difference obtained from the comparison is compared with a standard threshold ref0. When the first excess value exceeds the standard threshold ref0, the size of the standard threshold ref0 is increased, and the next calculated first difference is compared with the next adjusted standard threshold ref0. In addition, based on the comparison results, the polarity of the grayscale data in the next column adjacent to the grayscale data corresponding to the current first difference is adjusted. That is, every time the standard threshold ref0 of the change is exceeded, the grayscale data in each subsequent column is adjusted. Multiple columns of grayscale data may have more polarity adjustments than one grayscale polarity adjustment. Through multiple local polarity adjustments, the polarity of the grayscale data in the corresponding column changes dynamically with the grayscale data. This can weaken the common electrode bias caused by the imbalance of grayscale data in the display row, thereby improving the horizontal crosstalk problem and improving the display effect.

[0074] The following tables 1 to 5 illustrate this. Taking the 18 columns of grayscale data corresponding to sub-pixel 10 in the third row as an example, the grayscale data of each column are 127, -127, 127, -127, 127, -127, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0. Assuming the initial standard threshold ref0 is 500, when calculating the first and second total values, in the fourth column, the first total value is 254, and the second total value is -254. The first difference between the two is 508, which is greater than 500. At this time, the standard threshold ref0 is adjusted. Increase the value by 0, for example, to 1000. At the same time, the polarity of each grayscale data in the next column and subsequent columns needs to be reversed. Grayscale data that was originally positive polarity is reversed to grayscale data with negative polarity, and grayscale data that was originally negative polarity is reversed to grayscale data with positive polarity. As shown in Table 2, the grayscale data in columns 5 to 18 need to be reversed. Therefore, the grayscale data in the third row needs to be changed to 127, -127, 127, -127, -127, 127, -255, 0, -255, 0, -255, 0, -255, 0, -255, 0, -255, 0, -255, 0.

[0075] Then, when calculating the 8th column, the first total value is 636, the second total value is -381, and the first difference between the two is 1017, which is greater than the updated standard threshold ref0 of 1000. At this time, the standard threshold ref0 is adjusted upward, for example, to 1500. At the same time, the polarity of each grayscale data in the next column and subsequent columns needs to be reversed. As shown in Table 3, the polarity of the grayscale data in columns 9 to 18 needs to be reversed again. Therefore, the grayscale data in the third row needs to be changed to 127, -127, 127, -127, -127, 127, -255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0.

[0076] Then, when calculating the 12th column, the first total value is 1146, the second total value is -381, and the first difference between the two is 1527, which is greater than the updated standard threshold ref0 of 1500. At this time, the standard threshold ref0 is increased, for example, to 2000. At the same time, the polarity of each grayscale data in the next column and subsequent columns needs to be reversed. As shown in Table 4, the polarity of the grayscale data in columns 13 to 18 needs to be reversed again. Therefore, the grayscale data in the third row needs to be changed to 127, -127, 127, -127, -127, 127, -255, 0, 255, 0, 255, 0, -255, 0, -255, 0, -255, 0, -255, 0.

[0077] Then, when calculating the 16th column, the first total value is 1656, the second total value is -381, and the first difference between the two is 2037, which is greater than the updated standard threshold ref0 of 2000. At this time, the standard threshold ref0 is adjusted upward, for example, to 2500. At the same time, the polarity of each grayscale data in the next column and subsequent columns needs to be reversed. As shown in Table 5, the polarity of the grayscale data in columns 17 to 18 needs to be reversed again. Therefore, the grayscale data in the third row needs to be changed to 127, -127, 127, -127, -127, 127, -255, 0, 255, 0, 255, 0, -255, 0, -255, 0, -255, 0, 255, 0.

[0078] By sequentially comparing and switching polarities, the grayscale data in columns 5 to 8 can be switched from positive polarity, negative polarity, positive polarity, and negative polarity to negative polarity, positive polarity, negative polarity, and positive polarity. The grayscale data in columns 9 to 12 can be kept in their original polarity. The grayscale data in columns 13 to 16 can be switched from positive polarity, negative polarity, positive polarity, and negative polarity to negative polarity, positive polarity, negative polarity, and positive polarity. The grayscale data in columns 17 to 18 can be kept in their original polarity.

[0079] After repeatedly statistically analyzing, comparing, and switching the polarity of corresponding columns of grayscale data to be output in each column of the current row, the grayscale data with the polarity switched is output to the display panel 100. For example, the grayscale data of the 18 columns finally output to the display panel 100 are 127, -127, 127, -127, -127, 127, -255, 0, 255, 0, 255, 0, -255, 0, -255, 0, -255, 0, 255, 0. The sum of the grayscale data of the 18 columns is zero, that is, the display data of the current row has no bad coupling bias to the common electrode, thereby weakening horizontal crosstalk and improving the display effect.

[0080] Then, by performing multiple statistical analyses, comparisons, and corresponding local polarity switching on the grayscale data of each column in each row, the sum of the grayscale data in each column can be made to approach zero. This weakens the coupling of the grayscale data of each row to the common electrode, thereby eliminating horizontal crosstalk and improving the display effect.

[0081]

[0082] Table 1

[0083]

[0084] Table 2

[0085]

[0086] Table 3

[0087]

[0088] Table 4

[0089]

[0090] Table 5

[0091] The base number for adjusting the standard threshold ref0 after each comparison can be set according to the requirements. In an optional embodiment, the second difference between two adjacent standard thresholds ref0 is equal to the initial standard threshold ref0. For example, as shown above, the initial standard threshold ref0 is 500, and the second difference is 500 for each subsequent adjustment. The multiple changing standard thresholds ref0 change sequentially in the order of 500, 1000, 1500, and 2000.

[0092] The first and second total values ​​can be obtained by polarity classification and summing of their respective values, such as... Figure 4 As shown, in an optional embodiment, S20 includes:

[0093] S21. Start the judgment from the grayscale data of the first column of each row;

[0094] S22. When the grayscale data in the corresponding column is of positive polarity, the grayscale data of each positive polarity are summed in turn to obtain the first total value.

[0095] S23. When the grayscale data in the corresponding column is negative, sum the grayscale data of each negative polarity in turn to obtain the second total value.

[0096] S24. The first total value and the second total value are compared in turn to obtain multiple first differences.

[0097] When the grayscale data of each column in the current row is obtained, the polarity of the grayscale data in each column is first determined. When the grayscale data is determined to be of positive polarity, it is output to the corresponding positive polarity adder and summed sequentially to obtain the first total value. When the grayscale data is determined to be of negative polarity, it is output to the corresponding negative polarity adder and summed sequentially to obtain the second total value.

[0098] Then, the two changing first total values ​​and second total values ​​are compared in real time, and multiple fixed or changing first differences are generated in sequence.

[0099] Furthermore, the driving method for the display panel 100 also includes:

[0100] When the first difference is detected to be less than the standard threshold ref0, the polarity of the subsequent grayscale data is not reversed, and the original polarity of the grayscale data is maintained. For example, as shown in the third row of Table 1, when the grayscale data in the second column is counted, the first difference between the two is 254, which is less than the initially set standard threshold ref0 of 500. At this time, the polarity of the grayscale data in the third and fourth columns is not reversed.

[0101] Similarly, when counting the grayscale data up to column 6, the first difference between the two is 762, which is less than the standard threshold ref0 of 1000 after the adjustment and update. At this time, the grayscale data in columns 7 to 8 will not be adjusted again after the previous polarity adjustment.

[0102] To measure whether a polarity bias exists in the displayed rows, in one alternative embodiment, such as Figure 5 As shown, S40 also includes:

[0103] S50. Sum the grayscale data of each column in the current row after polarity reversal to obtain the third total value, and determine whether the third total value tends to 0.

[0104] S60. When the third total value tends to change towards 0, determine that the current display row tends to be in polarity balance;

[0105] S70. When the third total value deviates from 0, determine the polarity bias of the current display row.

[0106] In this embodiment, when polarity is reversed sequentially, the sum of grayscale data in each column is simultaneously calculated to obtain a third total value. The third total value is then used as a criterion for determining whether polarity bias exists. Taking the third row of Tables 1 to 3 as an example, the initial grayscale data in each column of the third row is 1530. After four polarity reversals, it changes sequentially to -1530, 1020, -51-, and 0. Therefore, it can be seen from the numerical values ​​that after comparison and polarity reversal, the grayscale data in each column of the current row gradually tends to 0 until it equals 0. The grayscale data in the current row after polarity reversal has no adverse coupling to the common electrode, eliminating horizontal crosstalk and improving the display effect.

[0107] Example 2

[0108] To ensure compatibility with different refresh rates of the display panel 100, in an optional embodiment, the driving method for the display panel 100 further includes:

[0109] S80. Select a standard threshold ref0 of different sizes based on the threshold selection signal. The size of the standard threshold ref0 is negatively correlated with the refresh rate of the current display screen.

[0110] In this embodiment, the timing controller 230 can identify display screens with different refresh rates sent by the system graphics card. The timing controller 230 selects and outputs different threshold selection signals according to the refresh rate. At the same time, the timing controller 230 or the source driver circuit 210 sets multiple ref0 of different sizes. The standard threshold ref0 is negatively correlated with the refresh rate. For example, when a high refresh rate display screen is detected, the timing controller 230 selects and outputs a first threshold selection signal to the source driver circuit 210. The source driver circuit 210 generates a first standard threshold. The value ref0_1 is set to, for example, 200. When data is summed, differencing, or compared, the first standard threshold ref0_1 is sequentially increased to 400, 600, 800, etc. Conversely, when a low refresh rate display is detected, the timing controller 230 selects to output a second threshold selection signal. The source drive circuit 210 generates a second standard threshold ref0_2, for example, 500. When data is summed, differencing, or compared, the second standard threshold ref0_2 is sequentially increased to 1000, 1500, 2000, etc.

[0111] By employing a high refresh rate and a low threshold setting, the dynamic polarity adjustment speed can be accelerated, and the horizontal crosstalk caused by the common electrode being coupled by the display row data bias can be dynamically adapted to improve the display effect.

[0112] Example 3

[0113] In an optional embodiment, in order to obtain the optimal common electrode voltage, the magnitude of the common electrode voltage is typically adjusted and the magnitude of the flicker value is detected. The common electrode voltage corresponding to the minimum flicker value is defined as the optimal common electrode voltage. Adjusting the common electrode voltage to the optimal common electrode voltage can reduce the coupling deviation of the data signal to the common electrode.

[0114] However, after performing the above steps S10~S40 to convert the data polarity of the corresponding rows, the flickering screen after the polarity conversion gradually moves from the initial display row bias state to the display row balance state, and the flickering screen tends to stop flickering. Correspondingly, the flickering value cannot be changed by adjusting the common electrode voltage. Therefore, the optimal common electrode voltage cannot be obtained, that is, the optimal common electrode voltage adjustment cannot be achieved.

[0115] The following tables 6 to 8 illustrate this. Taking the 18 columns of grayscale data corresponding to sub-pixel 10 in the third row as an example, we assume that in the initial state, the grayscale data of each column are 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, and the sum of the data is 1143.

[0116] Assuming the initial ref0 is 500, when calculating the first and second total values, in column 8, the first total value is 508 and the second total value is 0. The difference between the two is 508, which is greater than ref0 (500). In this case, ref0 is increased, for example, to 1000. At the same time, the polarity of each grayscale data in the next column and subsequent columns needs to be reversed. Grayscale data that was originally positive polarity is reversed to negative polarity, and grayscale data that was originally negative polarity is reversed to positive polarity. As shown in Table 7, the grayscale data in columns 9 to 18 needs to be reversed. Therefore, the grayscale data in the third row needs to be changed to 127, 0, 127, 0, 127, 0, 127, 0, -127, 0, -127, 0, -127, 0, -127, 0, -127, 0, -127, 0, with a total sum of -127.

[0117] Then, when calculating column 16, the first total value is 636, the second total value is -381, and the first difference between the two is 1016, which is greater than the updated ref0 of 1000. As shown in Table 7, the grayscale data in columns 17 to 18 need to be reversed again. Therefore, the grayscale data in the third row needs to be changed to 127, 0, 127, 0, 127, 0, 127, 0, -127, 0, -127, 0, -127, 0, -127, 0, 127, 0, with a total sum of 127.

[0118] As shown in Tables 6-8, after the grayscale data in the third row undergoes two polarity reversals, the sum of the displayed data is 1143, -127, and 127 respectively. The flickering image gradually approaches the balance state of the display row and stops flickering. Therefore, it is impossible to adjust the common electrode voltage based on the flickering value, resulting in the failure of the common electrode voltage adjustment.

[0119]

[0120] Table 6

[0121]

[0122] Table 7

[0123]

[0124] Table 8

[0125] Therefore, in order to accommodate the common electrode voltage adjustment function, after outputting the line scan signal to the display panel line by line, the following is also included:

[0126] S90. When the second selection signal is obtained, select to output the grayscale data of each column of each row to the display panel according to the original set polarity.

[0127] In this embodiment, the first selection signal and the second selection signal can be output by the timing controller 230 or stored and output by the corresponding memory 208. The timing controller 230 or the memory 208 selects to output the first selection signal and the second selection signal according to the trigger instruction. When the first selection signal is received, the grayscale data of each column of each row is statistically analyzed, compared and the polarity of the grayscale data of the corresponding column is reversed according to steps S10-S40, and the grayscale data of each column is output to the display panel 100 according to the final polarity reversal setting.

[0128] When the second selection signal is received, the operation of steps S10-S40 is not performed. Instead, the grayscale data of each column of each row is output directly according to the original polarity mode, thereby realizing two polarity output modes, improving output diversity. In this state, the flickering screen can realize the corresponding display row bias state. Different flickering values ​​can be obtained by adjusting the common electrode voltage, and the optimal common electrode voltage can be obtained based on the minimum flickering value.

[0129] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0130] Example 4

[0131] The driving method of the display panel 100 based on the above embodiments, such as Figure 6 As shown, a second aspect of the present invention provides a driving circuit 200 for a display panel, comprising:

[0132] Gate driving circuit 220 is used to output line scan signals to display panel 100 line by line;

[0133] The source drive circuit 210 is used to implement the steps of the driving method of the display panel 100 as described above.

[0134] In this embodiment, the driving circuit 200 of the display panel further includes a timing controller 230. The gate driving circuit 220 and the source driving circuit 210 are respectively connected to the timing controller 230. The gate driving circuit 220 and the source driving circuit 210 are also respectively connected to the display panel 100. The timing controller 230 provides grayscale data and corresponding driving signals. Under the control of the timing controller 230, the gate driving circuit 220 outputs line scanning signals to multiple scan lines of the display panel 100 line by line. Under the control of the timing controller 230, the source driving circuit 210 outputs multiple columns of grayscale data to multiple data lines of the display panel 100.

[0135] Simultaneously, the source drive circuit 210 can also execute the above steps S10 to S40 based on the first selection signal, so as to Figure 1 Taking the driving architecture as an example, the source driving circuit 210 obtains the multi-column grayscale data to be output to the display panel 100 from the timing controller 230, and sums the positive polarity grayscale data of each column to obtain a first total value, and sums the negative polarity grayscale data of each column to obtain a second total value. At the same time, the two total values ​​are compared in real time, and the first difference obtained by comparison is compared with ref0. When the first excess value exceeds ref0, the size of ref0 is increased, and the next calculated first difference is compared with the next adjusted ref0. At the same time, according to the comparison result, the polarity of the grayscale data of the next column adjacent to the grayscale data corresponding to the current first difference is adjusted. That is, every time ref0 changes once, the grayscale data of each subsequent column is adjusted. There may be more polarity adjustments for a single grayscale polarity adjustment setting for multiple columns of grayscale data. Through multiple local polarity adjustments, the polarity of the grayscale data of the corresponding column changes dynamically with the grayscale data.

[0136] After repeatedly statistically analyzing, comparing, and switching the polarity of the corresponding columns of grayscale data to be output in the current row, the source drive circuit 210 outputs the grayscale data after the polarity switching to the display panel 100, thereby weakening the common electrode bias caused by the imbalance of grayscale data in the display row, thus improving the horizontal crosstalk problem and enhancing the display effect.

[0137] Meanwhile, referring to Tables 6-8 above, it can be seen that after the source drive circuit 210 repeatedly counts, compares, and switches the polarity of the grayscale data to be output in each column of the current row, the flickering image gradually tends to the display row balance state from the initial display row bias state, and the flickering image tends to stop flickering. Correspondingly, the flickering value cannot be changed by adjusting the common electrode voltage. Therefore, the optimal common electrode voltage cannot be obtained, that is, the optimal common electrode voltage adjustment cannot be achieved.

[0138] To this end, the source drive circuit 210 can also receive a second selection signal and output the grayscale data of each column of each row directly according to the original polarity mode based on the second selection signal, thereby realizing two polarity output modes, improving output diversity. In this state, the flickering screen can realize the corresponding display row bias state, and different flickering values ​​can be obtained by adjusting the common electrode voltage, and the optimal common electrode voltage can be obtained based on the minimum flickering value.

[0139] Furthermore, the source drive circuit 210 can obtain the refresh rate of the display screen through the timing controller 230, and adjust the size of ref0 in reverse based on the refresh rate. By adopting a high refresh rate and a low threshold setting, the dynamic polarity adjustment speed can be accelerated, and the horizontal crosstalk caused by the common electrode being biased and coupled by the display row data can be dynamically adapted to improve the display effect.

[0140] The gate driving circuit 220 can be composed of multiple gate driving units connected in sequence. Each gate driving unit can be a shift register 212. Each gate driving unit is connected to a scan line and outputs the row scan signal of the current row.

[0141] The source drive circuit 210 can employ a corresponding polarity inversion unit, source drive unit, etc., in an optional embodiment, such as... Figure 7 As shown, the source drive circuit 210 includes:

[0142] The polarity inversion circuit 211 is connected to the timing controller 230 and is used to acquire grayscale data, a first selection signal and a second selection signal for each row. The polarity inversion circuit 211 is used to determine the polarity of the grayscale data of each column of each row according to the driving method of the display panel 100 described above, and output the polarity control signal.

[0143] The shift register 212 is connected to the polarity inversion circuit 211 and is used to store the polarity control signal and generate the corresponding multi-channel polarity selection signal.

[0144] The driving circuit 213 is connected to the polarity inversion circuit 211, the shift register 212 and the display panel 100 respectively. The driving circuit 213 is used to output the grayscale data of each line to the display panel 100 according to the preset polarity based on the multi-channel polarity selection signal.

[0145] In this embodiment, the driving circuit 213 is connected to multiple data lines. The polarity inversion circuit 211 is used to select the corresponding grayscale data of each column according to the corresponding selection signal, and to perform corresponding statistics, comparison and polarity inversion. It can also choose not to process each column of grayscale data. When the polarity inversion circuit 211 receives the first selection signal, it executes the above steps S10-S40 and determines the polarity of each column of grayscale data, forming a first polarity control signal. The shift register 212 is used to store and process the polarity control signal. When the first polarity control signal is received, it generates multiple first-channel polarity selection signals to the driving circuit 213. After receiving the multiple columns of grayscale data transmitted by the polarity inversion circuit 211, the driving circuit 213 performs polarity inversion on the multiple columns of grayscale data according to the first-channel polarity selection signal according to the set polarity inversion mode, and outputs the partially polarity-inverted multiple columns of grayscale data to the display panel 100.

[0146] Meanwhile, referring to Tables 6-8 above, it can be seen that after the polarity reversal circuit 211 repeatedly counts, compares, and switches the polarity of the grayscale data to be output in each column of the current row, the flickering image gradually tends to the display row balance state from the initial display row bias state, and the flickering image tends to stop flickering. Correspondingly, the flickering value cannot be changed by adjusting the common electrode voltage. Therefore, the optimal common electrode voltage cannot be obtained, that is, the optimal common electrode voltage adjustment cannot be achieved.

[0147] Therefore, the polarity inversion circuit 211 can also select to receive a second selection signal. When the second selection signal is received, the grayscale data of each column is not processed, and the second polarity control signal is selected to be output. When the second polarity control signal is received, the shift register 212 generates multiple second-channel polarity selection signals to the drive circuit 213. After receiving the multiple columns of grayscale data transmitted by the polarity inversion circuit 211, the drive circuit 213 directly outputs the grayscale data of each column of each row to the display panel 100 according to the original polarity mode. In this state, the flickering screen can realize the corresponding display row bias state. Different flickering values ​​can be obtained by adjusting the common electrode voltage, and the optimal common electrode voltage can be obtained based on the minimum flickering value.

[0148] The drive circuit 213 can be selected from corresponding positive polarity digital-to-analog converter 12, negative polarity digital-to-analog converter 13, and switching switches, etc. Figure 8 As shown, in an optional embodiment, the driving circuit 213 may include multiple driving units 2131. Each driving unit 2131 consists of an input selection switch 11, an output selection switch 14, a positive polarity digital-to-analog converter 12, and a negative polarity digital-to-analog converter 13. The control terminals of the input selection switch 11 and the output selection switch 14 are connected to the shift register 212. The input terminal of the input selection switch 11 is connected to the polarity control circuit and inputs the grayscale data of each column. The two output terminals of the input selection switch 11 are connected to the two input terminals of the output selection switch 14 through the positive polarity digital-to-analog converter 12 and the negative polarity digital-to-analog converter 13, respectively. The output terminal of the output selection switch 14 is connected to the data line of the display panel 100.

[0149] TP1 represents the output signal of shift register 212, and Yn represents the output signal of polarity inversion circuit 211.

[0150] When the shift register 212 selects the polarity selection signal of the first output channel, the input selection switch 11 connects the input terminal and the negative polarity digital-to-analog converter 13 to achieve polarity reversal, and the output selection switch 14 connects the negative polarity digital-to-analog converter 13 and the output terminal. The grayscale data after polarity reversal is output to the display panel 100.

[0151] When the shift register 212 selects the polarity selection signal of the second output channel, the input selection switch 11 connects the input terminal and the positive polarity digital-to-analog converter 12 without polarity reversal, and the output selection switch 14 connects the positive polarity digital-to-analog converter 12 and the output terminal, and the original polarity grayscale data is output to the display panel 100.

[0152] The polarity reversal circuit 211 can be composed of corresponding adders, subtractors 204, comparators 205, etc. In an optional embodiment, such as... Figure 9As shown, the polarity reversal circuit 211 includes:

[0153] The polarity determination unit 201 is used to determine the polarity of each row of grayscale data. When the grayscale data of the corresponding column is positive, the positive polarity grayscale data is output through the first transmission channel. When the grayscale data of the corresponding column is negative, the negative polarity grayscale data is output through the second transmission channel.

[0154] The first adder 202 is connected to the first transmission channel of the polarity determination unit 201, and is used to receive grayscale data of each positive polarity and sum them to obtain a first total value;

[0155] The second adder 203 is connected to the second transmission channel of the polarity determination unit 201, and is used to receive grayscale data of each negative polarity and sum them to obtain a second total value;

[0156] Subtractor 204 is connected to first adder 202 and second adder 203 respectively, and is used to compare the first total value and the second total value to obtain the first difference;

[0157] Comparator 205, connected to subtractor 204, is used to compare the first difference with the corresponding ref0 and output a comparison signal;

[0158] The polarity control unit 206 is connected to the comparator 205 and is used to output a first polarity control signal according to the comparison signal;

[0159] Selector 207 is connected to polarity control unit 206 and timing controller 230 respectively. Timing controller 230 is used to output second polarity control signal. Selector 207 is used to select to output first polarity control signal to shift register 212 when first selection signal is obtained, or to select to output second polarity control signal to shift register 212 when second selection signal is obtained.

[0160] The memory 208 is used to store the first selection signal and / or the second selection signal.

[0161] In this embodiment, when the timing controller 230 acquires grayscale data of multiple columns in each row, the polarity determination unit 201 sequentially determines the polarity of the grayscale data of each column. When the grayscale data of the corresponding column is detected to be positive, the positive grayscale data is output to the first adder 202 for data summation to obtain a first total value. When the grayscale data of the corresponding column is negative, the negative grayscale data is output to the second adder 203 for data summation to obtain a second total value. The first total value and the second total value are interpolated and compared in the subtractor 204 to obtain a first difference. The first difference and the set ref0 are output to the comparator 205. The comparator 205 compares the first difference and ref0. ref0 can be stored in a corresponding register, and the register can be connected to the comparator 205. When the first difference exceeds ref0, the register adjusts ref0 up according to the comparison signal.

[0162] The comparison signal is output to the polarity control unit 206. When the comparison signal indicates that the first difference exceeds ref0, the polarity control unit 206 outputs the first polarity inversion sub-signal in the first polarity control signal. When the selector 207 receives the first selection signal, it outputs the first polarity inversion sub-signal to the shift register 212. The shift register 212 generates multiple first channel polarity selection signals and controls the grayscale data of the corresponding column to be inverted and output.

[0163] When the first difference in the comparison signal does not exceed ref0, the polarity control unit 206 outputs the second polarity inversion sub-signal in the first polarity control signal, and the selector 207 outputs the second polarity inversion sub-signal to the shift register 212. The shift register 212 generates multiple second-channel polarity selection signals and controls the grayscale data of the corresponding column not to be inverted and output.

[0164] Referring to Tables 6-8 above, when the first polarity inversion sub-signal is output to the shift register 212 according to the first selection signal, the grayscale data of the corresponding column is inverted and output. Referring to Tables 6-8 above, the flickering screen gradually tends to the display row balance state from the initial display row bias state, and the flickering screen tends to stop flickering. Correspondingly, the flickering value cannot be changed by adjusting the common electrode voltage. Therefore, the optimal common electrode voltage cannot be obtained, that is, the optimal common electrode voltage adjustment cannot be achieved.

[0165] To accommodate the common electrode voltage adjustment function and obtain the optimal common electrode voltage, selector 207 can also select to receive a second selection signal. When the second selection signal is received, selector 207 transmits the second polarity control signal of timing controller 230 to shift register 212. Shift register 212 outputs grayscale data of each column according to the originally set polarity mode without performing local polarity reversal, thereby improving drive diversity. In this state, the flickering screen can realize the corresponding display row bias state. Different flickering values ​​can be obtained by adjusting the common electrode voltage, and the optimal common electrode voltage can be obtained based on the minimum flickering value.

[0166] The polarity determination unit 201 and the polarity control unit 206 can adopt corresponding processors, signal generators, and other structures.

[0167] To ensure compatibility with different refresh rates of the display panel 100, different ref0 sizes can also be selected. In one optional embodiment, such as... Figure 10 As shown, the polarity reversal circuit 211 also includes:

[0168] Threshold selector 209 has multiple input terminals for inputting ref0 of different sizes. The output terminal of threshold selector 209 is connected to comparator. Threshold selector 209 is used to select and output ref0 of different sizes to comparator 205 according to threshold selection signal. The size of ref0 changes negatively with the refresh rate of the current display screen.

[0169] In this embodiment, the timing controller 230 is connected to the control terminal of the threshold selector 209. The timing controller 230 can identify display screens with different refresh rates sent by the system graphics card. The timing controller 230 selects and outputs different threshold selection signals according to the refresh rate. At the same time, multiple ref0s of different sizes can be set in the polarity inversion circuit 211. The ref0s can be stored in the memory 208 or provided by the timing controller 230. The ref0s are negatively correlated with the refresh rate. For example, when a high refresh rate display screen is detected, the timing controller 230 selects and outputs the first threshold selection signal to the threshold selector 209. The threshold selector 209... The first standard threshold ref0_1 is selected to be output to comparator 205, for example, 200. During data summation, difference and comparison, the first standard threshold ref0_1 with a value of 200 is successively increased to 400, 600, 800, etc. Conversely, when a low refresh rate display is detected, the timing controller 230 selects to output a second threshold selection signal, and the threshold selector 209 selects to output a second standard threshold ref0_2 to comparator 205, for example, 500. During data summation, difference and comparison, the second standard threshold ref0_2 is successively increased to 1000, 1500, 2000, etc.

[0170] By employing a high refresh rate and a low threshold setting, the dynamic polarity adjustment speed can be accelerated, and the horizontal crosstalk caused by the common electrode being coupled by the display row data bias can be dynamically adapted to improve the display effect.

[0171] Example 5

[0172] A third aspect of the present invention provides a display device, such as... Figure 6 As shown, the display device includes a display panel 100 and a driving circuit 200 for the display panel. The specific structure of the driving circuit 200 is as described in the above embodiments. Since this display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The driving circuit 200 for the display panel is connected to the display panel 100.

[0173] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A driving method for a display panel, characterized in that, include: The line scan signal is output to the display panel line by line, and when the first selection signal is obtained, the multi-column grayscale data of each line to be output to the display panel is obtained; Starting from the first column of grayscale data in each row, count the first total value of positive grayscale data and the second total value of negative grayscale data column by column, and calculate the first difference between the first total value and the second total value. The first difference is compared with a standard threshold, and the current standard threshold is dynamically increased every time the first difference exceeds the standard threshold. The grayscale data of the next column corresponding to the current first difference is reversed to the subsequent grayscale data. The next first difference is compared with the increased standard threshold, and the polarity of the subsequent column is reversed according to the comparison result. The grayscale data of each column after polarity reversal is output to the display panel.

2. The driving method for the display panel as described in claim 1, characterized in that, The second difference between two adjacent standard thresholds is equal to the initial standard threshold.

3. The driving method for the display panel as described in claim 1, characterized in that, The process of sequentially calculating the first total value of positive grayscale data and the second total value of negative grayscale data, starting from the first column of each row, and then calculating the first difference between the first total value and the second total value, includes: The determination begins with the grayscale data in the first column of each row; When the grayscale data in the corresponding column is of positive polarity, the grayscale data of each positive polarity are summed in turn to obtain the first total value; When the grayscale data in the corresponding column is of negative polarity, the grayscale data of each negative polarity are summed in turn to obtain the second total value; The first total value and the second total value are compared numerically in sequence to obtain multiple first differences.

4. The driving method for the display panel as described in claim 1, characterized in that, Before outputting the grayscale data columns after polarity reversal to the display panel, the following steps are also included: The third total value is obtained by summing the grayscale data corresponding to each column of the current row after polarity reversal, and it is then determined whether the third total value tends to 0. When the third total value approaches 0, it is determined that the current display row is approaching polarity balance; When the third total value deviates from 0, the polarity bias of the current display row is determined.

5. The driving method for a display panel as described in any one of claims 1 to 4, characterized in that, The driving method for the display panel further includes: The standard threshold of different sizes is selected based on the threshold selection signal, and the size of the standard threshold is negatively correlated with the refresh rate of the current display screen.

6. The driving method for a display panel as described in any one of claims 1 to 4, characterized in that, After the progressive output of the line scan signal to the display panel, the method further includes: When the second selection signal is received, the grayscale data of each column of each row is selected to be output to the display panel according to the original set polarity.

7. A driving circuit for a display panel, characterized in that, include: Gate driving circuit, used to output line scan signals to the display panel line by line; Source drive circuit, including: A polarity inversion circuit, connected to a timing controller, is used to acquire grayscale data of each row, a first selection signal, and a second selection signal. The polarity inversion circuit is used to determine the polarity of the grayscale data of each column of each row according to the driving method of the display panel as described in any one of claims 1-6, and output a polarity control signal. A shift register, connected to the polarity inversion circuit, is used to store the polarity control signal and generate corresponding multi-channel polarity selection signals; The driving circuit is connected to the polarity inversion circuit, the shift register and the display panel respectively. The driving circuit is used to output the grayscale data of each row to the display panel according to the preset polarity based on the multi-channel polarity selection signal.

8. The driving circuit for the display panel as described in claim 7, characterized in that, The polarity reversal circuit includes: The polarity determination unit is used to determine the polarity of each row of grayscale data. When the grayscale data of the corresponding column is positive, the positive polarity grayscale data is output through the first transmission channel. When the grayscale data of the corresponding column is negative, the negative polarity grayscale data is output through the second transmission channel. The first adder is connected to the first transmission channel of the polarity determination unit and is used to receive grayscale data of each positive polarity and sum them to obtain a first total value. The second adder is connected to the second transmission channel of the polarity determination unit and is used to receive grayscale data of each negative polarity and sum them to obtain a second total value. A subtractor, connected to the first adder and the second adder respectively, is used to compare the first total value and the second total value to obtain the first difference value; A comparator, connected to the subtractor, is used to compare the first difference with a corresponding standard threshold and output a comparison signal; A polarity control unit, connected to the comparator, is used to output a first polarity control signal based on the comparison signal; The selector is connected to the polarity control unit and the timing controller respectively. The timing controller is used to output a second polarity control signal. The selector is used to select to output the first polarity control signal to the shift register when a first selection signal is obtained, or to select to output the second polarity control signal to the shift register when a second selection signal is obtained. A memory for storing the first selection signal and / or the second selection signal.

9. The driving circuit for the display panel as described in claim 8, characterized in that, The polarity reversal circuit also includes: A threshold selector has multiple input terminals for inputting standard thresholds of different sizes, and its output terminal is connected to the comparator. The threshold selector is used to select and output standard thresholds of different sizes to the comparator according to a threshold selection signal. The size of the standard threshold is negatively correlated with the refresh rate of the current display screen.

10. A display device, characterized in that, It includes a display panel and a driving circuit for the display panel as described in any one of claims 7 to 9, wherein the driving circuit for the display panel is connected to the display panel.

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