CN106157918A - Method for driving display panel and display panel - Google Patents

Abstract

The present invention provides a method for driving a display panel and a display panel, wherein the display panel includes a plurality of pixels for displaying a color, and the plurality of pixels include a first group of pixels, a second group of pixels, and a second group of pixels. The third group of pixels. The method includes when controlling the plurality of pixels to display a first data, providing a first voltage to the first group of pixels, providing a second voltage to the second group of pixels, and providing a first voltage to the third group of pixels. Three voltages, and when controlling the plurality of pixels to display a second data, a fourth voltage is provided to the first group of pixels and the second group of pixels, and a fifth voltage is provided to the third group of pixels. The first data is less than a first threshold, and the second data is greater than the first threshold. The first voltage is higher than the second voltage and the third voltage, and the fourth voltage is higher than the fifth voltage.

Description

Method for driving display panel and display panel

technical field

The present invention relates to a method for driving a display panel, a display panel, a method for driving a display panel according to a gamma curve, and a display panel.

Background technique

Current display panels, such as liquid crystal panels, often suffer from color washout problems, especially when users view them at large oblique angles such as side viewing angles, the color washout problem is more likely to occur. In the side viewing angle, the gamma curve of the display panel is often different from the gamma curve viewed in the front viewing angle, so that when the gray scale to be displayed is increased, the brightness increase is higher than the front viewing angle, so the whitening problem occurs .

In order to improve the whitening problem, the sub-pixel (sub-pixel) of the display panel can be divided into the main part and the secondary part. By turning on the main part first, the main part can reach the predetermined brightness, and then turn on the sub-pixel , so as to adjust the gamma curve of the side view. However, if this solution is adopted, a control circuit must be provided on the sub-pixels to control the main part and the secondary part. The control circuit will cause shading to reduce the transmittance of the sub-pixels, which is not conducive to the specifications of the display panel.

In addition, the difference in brightness between the main part and the secondary part will also cause color unevenness such as rhombic patterns and broken colors. Therefore, a solution is really needed in this field to improve the display effect of the display panel.

Contents of the invention

An embodiment of the invention discloses a method for driving a display panel. The display panel includes a plurality of pixels for displaying a color, and the pixels include a first group of pixels, a second group of pixels, and a third group of pixels. The method includes providing a first voltage to the first group of pixels, a second voltage to the second group of pixels, and a first voltage to the third group of pixels when the pixels are to be controlled to display a first data. three voltages; and when the pixels are to be controlled to display a second data, a fourth voltage is provided to the first group of pixels and the second group of pixels, and a fifth voltage is provided to the third group of pixels. Wherein the first data is less than a first threshold, the second data is greater than the first threshold, the first voltage is greater than the second voltage and the third voltage, and the fourth voltage is greater than the fifth voltage.

Another embodiment of the present invention discloses a display panel, which includes a pixel group and a driving unit. The pixel group includes a first group of pixels, a second group of pixels and a third group of pixels. The first group of pixels can be used to determine the relationship between the displayed gray scale and brightness according to a first gamma function. The second group of pixels can be used to determine the relationship between the displayed grayscale and brightness according to a second gamma function. The third group of pixels can be used to determine the relationship between the displayed grayscale and brightness according to a third gamma function. The driving unit is electrically coupled to the first, second and third groups of pixels, and is used to determine the relationship between the grayscale and brightness displayed by the first group of pixels according to the first gamma function, and according to the second gamma The function determines the relationship between the gray scale displayed by the second group of pixels and the brightness, and the relationship between the gray scale displayed by the third group of pixels and the brightness is determined according to the third gamma function. Wherein, when it is desired to control the group of pixels to display a first gray scale, the first group of pixels displays a first brightness according to the first gamma function, and the second group of pixels displays a second brightness according to the second gamma function. Brightness, and the third group of pixels displays a third brightness according to the third gamma function; when it is desired to control the group of pixels to display a second gray scale, the first group of pixels displays a first gray scale according to the first gamma function Four brightness, the second group of pixels display the fourth brightness according to the second gamma function. The third group of pixels displays a fifth brightness according to the third gamma function; and the first grayscale is smaller than a first threshold value, the second grayscale is larger than the first threshold value, and the first brightness is larger than the first threshold value two brightness and the third brightness, and the fourth brightness is greater than the fifth brightness.

Another embodiment of the invention discloses a display panel. The display panel includes a pixel group and a driving unit. The pixel group includes a first group of pixels, a second group of pixels and a third group of pixels. The first group of pixels can be used to determine the relationship between the displayed gray scale and brightness according to a first gamma function. The second group of pixels can be used to determine the relationship between the displayed grayscale and brightness according to a second gamma function. The third group of pixels can be used to determine the relationship between the displayed grayscale and brightness according to a third gamma function. The driving unit is electrically coupled to the first, second and third groups of pixels, and is used to determine the relationship between the grayscale and brightness displayed by the first group of pixels according to the first gamma function, and according to the second gamma The function determines the relationship between the gray scale displayed by the second group of pixels and the brightness, and the relationship between the gray scale displayed by the third group of pixels and the brightness is determined according to the third gamma function. Wherein, in an Nth row of the display panel, a plurality of pixels of the first group of pixels and a plurality of pixels of the third group of pixels are alternately arranged, and in an N+1th row of the display panel, the second group of pixels A plurality of pixels of the pixel and a plurality of pixels of the third group of pixels are arranged alternately, and in an Mth column of the display panel, a plurality of pixels of the first group of pixels are arranged alternately with a plurality of pixels of the third group of pixels, In an M+1th column of the display panel, a plurality of pixels of the second group of pixels and a plurality of pixels of the third group of pixels are arranged alternately, the Mth row is adjacent to the M+1th row, and the Mth row is adjacent to the M+1th row. N columns are adjacent to the N+1th column, where M and N are positive integers.

Another embodiment of the present invention discloses a display panel including a plurality of pixel groups arranged in a matrix. Each of the pixel groups includes a first to sixth pixel arranged in the first row of each of the pixel groups in sequence along a first direction; and a seventh to twelfth pixel in sequence along the The first direction is arranged in the second row of each of the pixel groups. Wherein, the second, fourth and ninth pixels substantially determine the relationship between their grayscale and brightness according to a first gamma function; the sixth, seventh and eleventh pixels substantially determine the relationship between their grayscale and brightness according to a second gamma function determining the relationship between grayscale and brightness; and the first, third, fifth, eighth, tenth and twelfth pixels substantially determine the relationship between grayscale and brightness according to a third gamma function.

By adopting the method for driving the display panel and the display panel disclosed in the embodiments of the present invention, the problem of partial whitening of the side viewing angle, the problem of diamond pattern and/or the problem of broken color can be improved, which is really helpful for improving the defects of the existing display panel. beneficial.

Description of drawings

FIG. 1 is a schematic diagram of pixel arrangement of a display panel according to an embodiment of the present invention.

FIG. 2 is a comparative graph of display data to be displayed on a pixel and a voltage applied to the pixel in an embodiment of the present invention.

FIG. 3 is a flowchart of a driving method of a display panel in an embodiment of the present invention.

FIG. 4 is a schematic diagram of pixel arrangement corresponding to step 310 in FIG. 3 .

FIG. 5 is a schematic diagram of pixel arrangement corresponding to step 320 in FIG. 3 .

FIG. 6 is a comparative graph of display data to be displayed on a pixel and a voltage applied to the pixel in another embodiment of the present invention.

FIG. 7 is a comparative graph of display data to be displayed on a pixel and a voltage applied to the pixel in another embodiment of the present invention.

FIG. 8 is a schematic diagram of the control of the display panel according to the embodiment of the present invention.

9 to 12 are schematic diagrams of a display panel including pixels of multiple colors in an embodiment of the present invention.

FIG. 13 is a schematic diagram of a gamma curve of a side viewing angle according to an embodiment of the present invention.

Figure number:

100, 900, 1000, 1100, 1200 display panels

PH, PI, PL, PHr, PIr, PLr, PHg, PIg, PLg, PHb, PIb, PLb pixels

Pt, Ptr, Ptg, Ptb pixel grouping

V1 first voltage

V2 second voltage

V3 third voltage

V4 fourth voltage

V5 fifth voltage

V6 sixth voltage

V _min , V _H , V _I , V _L voltage

d1 first data

d2 second data

d3 third data

d _min fourth data

Threshold value of TH1, TH2, TH3, TH _min

T _H , T _I , _TL query table

D display data

810 drive unit

910, 1010, 1110, 1210 pixel arrangement

1301, 1302, 1303 curves

detailed description

FIG. 1 is a schematic diagram of pixel arrangement of a display panel 100 according to an embodiment of the present invention. The display panel 100 may include a plurality of pixels, and each pixel may be used to display a color. The pixels in FIG. 1 are all pixels displaying the same color, and these pixels may include a pixel PH, a pixel PI, and a pixel PL. A plurality of pixels PH may constitute a first group of pixels, a plurality of pixels PI may constitute a second group of pixels, and a plurality of pixels PL may constitute a third group of pixels. The arrangement of the pixels PH, the pixels PI, and the pixels PL can be shown in FIG. 1 . According to the embodiment of FIG. 1, in the nth row of the display panel 100, the plurality of pixels PH of the first group of pixels and the plurality of pixels PL of the third group of pixels can be alternately arranged, and in the (n+1)th row, the second A plurality of pixels PI of a group of pixels and a plurality of pixels PL of a third group of pixels may be alternately arranged, and in the mth column, a plurality of pixels PH and a plurality of pixels PL may be arranged alternately, in the (m+1)th column, a plurality of The pixel PI and the plurality of pixels PL can be arranged alternately, the above-mentioned nth row can be adjacent to the (n+1)th row, and the mth column can be adjacent to the (m+1)th column, n and m can both be Positive odd numbers or both positive even numbers. As can be seen from FIG. 1 , the display panel 100 may further include a driving unit 810 , which will be described below.

Each pixel (PH, PI, PL) shown in FIG. 1 is a pixel displaying the same color, so as to illustrate the principle of the embodiment of the present invention, but the display panel can actually display pixels of multiple colors, which will be further described in FIG. 9 to the embodiment of Figure 12. Therefore, each of the above-mentioned pixels can be disposed between two pixels of different colors, such as red, green or blue. The pixel group Pt shown in FIG. 1 takes four pixels displaying the same color as an example, and the display panel 100 may include a plurality of pixel groups Pt.

FIG. 2 is a comparative graph of display data to be displayed on a pixel and a voltage applied to the pixel in an embodiment of the present invention. The display data on the horizontal axis of FIG. 2 can be a grayscale value, or a related value corresponding to the grayscale; the vertical axis can be a voltage value applied to a pixel, a root mean square (root mean square) value of a voltage value, or a normalized ( normalized), the unit of which can be volts. In FIG. 2 , with the threshold TH1 as the boundary, the display data on the horizontal axis can be divided into first data d1 smaller than the threshold TH1 and second data d2 larger than the threshold TH1 . In other words, the first data d1 may correspond to a lower grayscale value to be displayed on the pixel, and the second data d2 may correspond to a higher grayscale value to be displayed on the pixel. In FIG. 2, the first voltage V1, the second voltage V2, the third voltage V3, the fourth voltage V4 and the fifth voltage V5 can be used when the pixels of the display panel 100 display various data (such as the first data d1, the second data d2, etc.), the voltage values corresponding to the displayed data are supplied to the pixels of the display panel 100 . The pixels of the display panel 100 can be grouped. In the embodiment of the present invention, the first group of pixels can include pixels PH, the second group of pixels can include pixels PI, and the third group of pixels can include pixels PL. The relationship between the pixels PH, PI and PL and the display data (such as d1, d2) and the voltages supplied to the pixels (such as the first voltage V1 to the fifth voltage V5) can be shown in FIG. 2 , and related operation steps can be seen in FIG. 3 .

FIG. 3 is a flowchart of a method 300 for driving a display panel in an embodiment of the present invention. Referring to FIG. 1 and FIG. 2, the driving method 300 may include:

Step 305: When controlling the pixels of the display panel 100 to display the first data d1, proceed to step 310; when controlling the pixels of the display panel 100 to display the second data d2, proceed to step 320;

Step 310: providing the first voltage V1 to the first group of pixels, providing the second voltage V2 to the second group of pixels, and providing the third voltage V3 to the third group of pixels; and

Step 320 : providing the fourth voltage V4 to the first group of pixels and the second group of pixels, and providing the fifth voltage V5 to the third group of pixels.

Wherein, the first voltage V1 may be greater than the second voltage V2, the first voltage V1 may be greater than the third voltage V3, the second voltage V2 may be greater than or equal to the third voltage V3, and the fourth voltage V4 may be greater than the fifth voltage V5.

According to an embodiment of the present invention, among the pixel groups included in the display panel 100, the pixel PH included in the first group of pixels can determine the relationship between the displayed grayscale and brightness according to the first gamma function, and the pixel PH included in the second group of pixels The pixel PI can determine the relationship between the displayed grayscale and the brightness according to the second gamma function, and the pixel PL included in the third group of pixels can determine the relationship between the displayed grayscale and the brightness according to the third gamma function. The above-mentioned first voltage V1 to fifth voltage V5 can correspond to the first brightness to the fifth brightness respectively, wherein the first brightness can be greater than the second brightness and the third brightness, the fourth brightness can be greater than the fifth brightness, and the second brightness can be greater than the fifth brightness. Can be greater than or equal to the third brightness.

The display panel 100 may include a driving unit 810, and the driving unit 810 may be electrically coupled to the first, second and third groups of pixels for determining the grayscale and brightness displayed by the first group of pixels according to the first gamma function. The relationship between the gray scale displayed by the second group of pixels and the brightness is determined according to the second gamma function, and the relationship between the gray scale displayed by the third group of pixels and the brightness is determined according to the third gamma function. The driving unit 810 can be, for example, a timing control source driver (Tconsource driver) or an application specific chip (ASIC).

FIG. 4 is a schematic diagram of pixel arrangement corresponding to step 310 in FIG. 3 . FIG. 4 is an example where the ratio of the total area of the first group of pixels, the total area of the second group of pixels, and the total area of the third group of pixels is substantially about 1:1:2. In detail, if each The areas of one group of pixels, the second group of pixels and the third group of pixels are approximately the same, and the numbers of the first group of pixels, the second group of pixels and the third group of pixels included in the display panel 100 are approximately 1:1:2. In addition, the proportion of the total area can also be realized by adjusting the number and/or individual areas of the first group of pixels, the second group of pixels and the third group of pixels. 4, it can be seen that when the first data d1 (such as lower grayscale data) is displayed, the pixel PH to which a higher voltage (such as the first voltage V1) is applied, and the pixel PH to which a lower voltage (such as the second voltage V2) is applied , the third voltage V3) of the pixels PI and PL, the area ratio can be shown in the mathematical formula eq-1:

(occupied area of pixel PH): (occupied area of pixel PI+occupied area of pixel PL)=1:3...(eq-1)

If the pixel to which a higher voltage is applied is regarded as the main part, and the part to which a lower voltage is applied is regarded as the secondary part, then when the area ratio of the main part and the secondary part is between 2:8 (ie 1:4) to 3:7 (ie approximately 1:2.3), it can correspond to the lowest tone render distortion index (Tone Render Distortion Index; hereinafter referred to as TRDI value). This can refer to Table 1, and the teaching of K.-C.Tien et al., IDW, 2012:

Table 1

Since a lower TRDI value can correspond to a slight whitening phenomenon, the visual effect of a large-angle side view can be closer to a front view angle. Since the whitening phenomenon is more obvious when displaying low grayscale data (such as displaying the first data d1), the supply voltage is adjusted through step 310 and the driving method shown in FIG. 4 to make the areas of the main part and the secondary part The ratio is essentially 1:3, which can effectively improve the whitening problem of the side viewing angle when displaying low-grayscale data.

When displaying data with a higher gray scale, if the area ratio of the pixels is also as shown in Figure 4, so that the area ratio of the main part and the secondary part differs greatly, the diamond pattern problem will be more obvious. Therefore, step 320 can be performed to improve the diamond pattern problem.

FIG. 5 is a schematic diagram of pixel arrangement corresponding to step 320 in FIG. 3 . When displaying the second data d2 (such as higher grayscale data), the pixels PH and PI to which a higher voltage (such as the fourth voltage V4) is applied, and the pixels PL to which a lower voltage (such as the fifth voltage V5) is applied, Its area ratio can be shown in the mathematical formula eq-2:

(occupied area of pixel PH+occupied area of pixel PI): (occupied area of pixel PL)=1:1...(eq-2)

Therefore, if the pixel to which a higher voltage is applied is regarded as the main part, and the part to which the lower voltage is applied is regarded as the secondary part, step 320 can make the area ratio of the pixels of the main part and the secondary part Can be 1:1. Generally speaking, when displaying a higher grayscale (that is, higher brightness), the problem of diamond pattern is more obvious visually. It can be seen from experiments that when the area ratio of the pixels of the main part and the secondary part is substantially 1 : When 1, the arrangement of the main part and the secondary part can be denser, so it can effectively improve the diamond pattern problem. Therefore, through the step 320 and the arrangement of pixels in FIG. 5 , the diamond pattern problem when displaying high grayscale data can be improved.

In the embodiment of the present invention, the total area of the first group of pixels (composed of pixels PH) may be substantially less than or equal to the total area of the second group of pixels (composed of pixels PI) and the total area of the third group of pixels (composed of pixels PL). The sum of the total area can improve the whitening problem of the side view, and can reduce the problems of diamond pattern and broken color. According to an embodiment of the present invention, the ratio of the total area of the first group of pixels, the total area of the second group of pixels and the total area of the third group of pixels may be substantially 1:1:2 to achieve the best display effect.

FIG. 6 is a comparative graph of display data to be displayed on a pixel and a voltage applied to the pixel in another embodiment of the present invention. In the embodiment of Fig. 6, when the first data d1 and the second data d2 are displayed, the operation, that is, the curves can be as described in the embodiments of Fig. 2 to Fig. 5; when the third data d3 is displayed, the sixth voltage can be provided V6 to the first set of pixels (which consists of pixels PH), the second set of pixels (which consists of pixels PI), and the third set of pixels (which consists of pixels PL). Wherein, the third data d3 may be larger than the threshold TH2, and the second data d2 may be smaller than the threshold TH2. This can reduce the complexity of the operating voltage, and can still improve the above-mentioned rhombic pattern problem, broken color problem and whitening problem of side viewing angle.

FIG. 7 is a comparative graph of display data to be displayed on a pixel and a voltage applied to the pixel in another embodiment of the present invention. Fig. 6 is an embodiment, when the first data d1, the second data d2 and the third data d3 are displayed, the operation, that is, the curve can be as described in Fig. 6 for the embodiment, when the fourth data d _min is displayed, it can provide The same voltage V _min is applied to the first group of pixels, the second group of pixels and the third group of pixels. Wherein, the fourth data d _min may be smaller than the threshold TH _min , and the first data d1 may be larger than the threshold TH _min . For example, when it is desired to make the first group of pixels (which consists of pixels PH), the second group of pixels (which consists of pixels PI), and the third group of pixels (which consists of pixels PL) display ultra-low gray close to black In the case of a high-level picture, the voltage V _min can be provided for all three groups of pixels. This facilitates voltage setting and simplifies test procedures such as image sticking.

FIG. 8 is a schematic diagram of the control of the display panel according to the embodiment of the present invention. When the display data D is to be displayed on the display panel 100, the display data D can be input into the look-up tables _TH , _TI and _TL . The display data D, as mentioned above, can be a gray scale value, or a related numerical value corresponding to the gray scale. The look-up tables T _H , T _I and _TL can be disposed in the control chip or the programmable access device of the display panel 100 , and they respectively correspond to the first group of pixels, the second group of pixels and the third group of pixels. After looking up the table, the driving unit 810 can control the voltage supply unit to provide voltages V _H , V _I and V _L corresponding to the display data D to the first group of pixels, the second group of pixels and the third group of pixels, so as shown in FIG. 2. The graph shown in Figure 6 or Figure 7 provides the voltage. In addition, the look-up tables _{T H} , TI and _TL can also be integrated in the driving unit.

FIG. 9 is a schematic diagram of a display panel 900 including pixels of multiple colors in an embodiment of the present invention. As described above in FIG. 1 , the pixel group Pt in FIG. 1 and the pixel arrangement in FIG. 4 and FIG. 5 take pixels displaying the same color as an example to illustrate the principle of the embodiment of the present invention. When the display panel includes multiple colors, its pixel configuration can be as shown in FIG. 9 . In FIG. 9, the pixels PHr, PHg, PHb may correspond to the above pixel PH, the pixels PIr, PIg, PIb may correspond to the above pixel PI, and the pixels PLr, PLg, PLb may correspond to the above pixel PL, The above r, g, and b are respectively used to indicate the color of the pixel. Pixels PHr, PIr, PLr can be used to display red and form another pixel group, pixels PHg, PIg, PLg can be used to display green and form another pixel group, and PHb, PIb, PLb can be used to display blue and form another pixel group. A group of pixels. Taking the pixel arrangement 910 as an example, if the pixels displaying red are captured, the pixel group Ptr can be formed, which can correspond to the pixel group Pt above. Similarly, the pixel group Ptg (composed of pixels displaying green) and the pixel group Ptr Ptb (consisting of pixels displaying blue) may correspond to pixel groups Pt, respectively. In this way, the display panel driving method described in the embodiments of FIGS. 1 to 8 of the present invention can be achieved, and the display panel can display multiple colors such as red, green, and blue to achieve color display.

In addition to the pixel arrangement 910 in FIG. 9 , other pixel arrangements may also be allowed in the embodiment of the present invention. 10 to 12 are respectively schematic diagrams of display panels 1000 to 1200 including pixels of multiple colors in an embodiment of the present invention. As shown in FIGS. 10 to 12 , the pixels can be repeatedly arranged in a pixel arrangement 1010 , 1110 or 1210 . The pixel arrangement 1010, 1110, or 1210 can make the pixels displaying red, green, and blue be arranged in pixel groups Ptr, Ptg, and Ptb, respectively, so as to achieve the display described in the embodiments of FIGS. 1 to 8 of the present invention. The panel driving method enables multiple colors to be mixed to display colors, and at the same time improves the problem of off-white image, rhombus pattern and broken color. It can be seen from experiments that the color distribution of the pixel arrangement 1110 in FIG. 11 can be relatively uniform. 11, it can be seen that the pixel arrangement 1110 may include 12 pixels, wherein, the first row at the top may be respectively pixels PLr, PHg, PLb, PHr, PLg, and PIb from left to right; the second row at the top The rows from left to right are pixels PIr, PLg, PHb, PLr, PIg, and PLb, where PH, PL, and PI are used to indicate the gamma function based on which the pixel is driven, and r, g, and b are used for The colors of the pixels are marked, and all the pixels of the display panel 1100 in FIG. 11 can be arranged repeatedly using the pixel arrangement 1110, so as to achieve better effects of simultaneously improving the problem of off-white images, rhombus patterns and broken colors. The pixel arrangement 910 can include 12 pixels. The first row above can be pixels PHr, PHg, PHb PLr, PLg, and PLb from left to right, and the second row below can be pixels PLr from left to right. , PLg, PLb, PIr, PIg and PIb, wherein PH, PL and PI are respectively used to indicate the gamma function according to which the pixel is driven, and r, g, b are used to indicate the color of the pixel. The pixel arrangement 1210 may include 12 pixels, the first row at the top may be pixels PLr, PHg, PLb, PIr, PLg, and PHb respectively from left to right, and the second row at the bottom may be pixels respectively from left to right PHr, PLg, PIb, PLr, PIg, and PLb, wherein PH, PL, and PI are respectively used to indicate the gamma function according to which the pixel is driven, and r, g, and b are used to indicate the color of the pixel.

It can be seen from any of Figures 9 to 12 that the same pixel group Pt can be used to display a color (such as red, green or blue), and a pixel of the pixel group can be set between two pixels of different colors , and adjacent to the two pixels, for example, a pixel displaying red may be located between a pixel displaying blue and a pixel displaying green. Figures 9 to 12 take red, green and blue as examples to illustrate the principle of pixel color mixing. However, the embodiment of the present invention is not limited to the use of red, green and blue, and other technologies that allow pixels to display colors can also be used for color mixing. .

FIG. 13 is a schematic diagram of a gamma curve of a side viewing angle according to an embodiment of the present invention. The horizontal axis of FIG. 13 can be the above-mentioned display data, taking the gray scale value as an example; the vertical axis can be the brightness value, and the brightness value can be normalized to 0 to 1 for comparison. The curve 1303 may be a gamma 2.2 (Gamma 2.2) curve corresponding to the sRGB (standard RGB) standard. Curves 1301 and 1302 may be gamma curves for a right viewing angle of 60 degrees. Curve 1301 may be a gamma curve that does not use the embodiment of the present invention, and it deviates greatly from curve 1303 in the range of gray scale values such as 32 to 160, so whitening problems are likely to occur. By using the display panel and the driving method of the embodiments of the present invention, the gamma curve can be adjusted from the curve 1301 to the curve 1302, which is closer to the Gamma 2.2 (Gamma 2.2) curve, thus improving the display effect.

In summary, the driving method of the embodiment of the present invention can simultaneously improve the whitening problem of the side viewing angle, improve the diamond pattern problem and the broken color problem, and maintain the transmittance. helpful.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (18)

1. A method for driving a display panel, characterized in that the display panel comprises a plurality of pixels for displaying a color, and the pixels comprise a first group of pixels, a second group of pixels, and a third group of pixels , the method contains: When it is desired to control the pixels to display a first data, a first voltage is provided to the first group of pixels, a second voltage is provided to the second group of pixels, and a third voltage is provided to the third group of pixels; and When it is desired to control the pixels to display a second data, a fourth voltage is provided to the first group of pixels and the second group of pixels, and a fifth voltage is provided to the third group of pixels; Wherein the first data is less than a first threshold, the second data is greater than the first threshold, the first voltage is greater than the second voltage and the third voltage, and the fourth voltage is greater than the fifth voltage. 2. The method for driving a display panel as claimed in claim 1, wherein the second voltage is greater than or equal to the third voltage. 3. The method for driving a display panel as claimed in claim 1, further comprising: when the pixels are to be controlled to display a third data, the first group of pixels, the second group of pixels and the third group of pixels The group of pixels provides a sixth voltage, wherein the second data is smaller than a second threshold, and the third data is larger than the second threshold. 4. The method for driving a display panel according to claim 1, further comprising: when the pixels are to be controlled to display a third data, for the first group of pixels, the second group of pixels and the third group of pixels The group of pixels provides a sixth voltage, wherein the third data is smaller than a second threshold, and the first data is larger than the second threshold. 5. The method for driving a display panel as claimed in claim 1, wherein the sum of the total area of the first group of pixels and the total area of the second group of pixels is substantially equal to the total area of the third group of pixels. 6. The method for driving a display panel as claimed in claim 1, wherein the total area of the first group of pixels is substantially smaller than the sum of the total area of the second group of pixels and the total area of the third group of pixels. 7. The method for driving a display panel as claimed in claim 5 or 6, wherein the ratio of the total area of the first group of pixels, the total area of the second group of pixels and the total area of the third group of pixels is substantially The above is 1:1:2. 8. The method for driving a display panel according to claim 1, wherein in an Nth row of the display panel, a plurality of pixels of the first group of pixels and a plurality of pixels of the third group of pixels are alternately arranged , in an (N+1)th row of the display panel, a plurality of pixels of the second group of pixels and a plurality of pixels of the third group of pixels are alternately arranged, and in the Nth row and the ( In a first column of N+1) row, a plurality of pixels of the first group of pixels and a plurality of pixels of the third group of pixels are arranged alternately, in the Nth row and the (N+1)th row of the display panel A second column of the row, a plurality of pixels of the second group of pixels and a plurality of pixels of the third group of pixels are arranged alternately, the Nth row is adjacent to the (N+1)th row, and the first column is Adjacent to the second column, where N is a positive integer. 9. The method for driving a display panel as claimed in claim 1, wherein a pixel of the first group of pixels, the second group of pixels, and the third group of pixels is disposed between two pixels of different colors , and adjacent to the two pixels. 10. The method for driving a display panel as claimed in claim 1, wherein the color is red, green or blue. 11. A display panel, characterized in that it comprises: A pixel group, the pixel group includes: A first group of pixels is used to determine the relationship between the displayed grayscale and brightness according to a first gamma function; A second group of pixels is used to determine the relationship between the displayed gray scale and brightness according to a second gamma function; and A third group of pixels is used to determine the relationship between the displayed grayscale and brightness according to a third gamma function; and a drive unit, electrically coupled to the first, second and third groups of pixels, for determining the relationship between the gray scale and brightness displayed by the first group of pixels according to the first gamma function, and according to the second gamma The function determines the relationship between the gray scale displayed by the second group of pixels and the brightness, and determines the relationship between the gray scale displayed by the third group of pixels and the brightness according to the third gamma function; in: When it is desired to control the group of pixels to display a first gray scale, the first group of pixels displays a first brightness according to the first gamma function, and the second group of pixels displays a second brightness according to the second gamma function, and the third group of pixels display a third brightness according to the third gamma function; When it is desired to control the group of pixels to display a second gray scale, the first group of pixels displays a fourth brightness according to the first gamma function, and the second group of pixels displays the fourth brightness according to the second gamma function, and the third set of pixels display a fifth brightness according to the third gamma function; and The first grayscale is smaller than a first threshold value, the second grayscale is larger than the first threshold value, the first brightness is larger than the second brightness and the third brightness, and the fourth brightness is larger than the fifth brightness. 12. The display panel according to claim 11, wherein the ratio of the total area of the first group of pixels, the total area of the second group of pixels and the total area of the third group of pixels is substantially 1:1 :2. 13. The display panel as claimed in claim 11, wherein the second brightness is greater than or equal to the third brightness. 14. The display panel according to claim 11, wherein when the group of pixels is to be controlled to display a third gray scale, the driving unit is additionally used to drive the group of pixels so that the group of pixels can be controlled according to the first gray scale A gamma function to the third gamma function display a sixth brightness, wherein the second gray scale is smaller than a second threshold value, and the third gray scale is larger than the second threshold value. 15. The display panel according to claim 11, wherein when it is desired to control the group of pixels to display a third gray scale, the group of pixels is made according to the first to third gamma functions A sixth brightness is displayed, wherein the third grayscale is smaller than a second threshold value, and the first grayscale is larger than the second threshold value. 16. A display panel, characterized in that it comprises: A pixel group, the pixel group includes: A first group of pixels is used to determine the relationship between the displayed grayscale and brightness according to a first gamma function; A second group of pixels is used to determine the relationship between the displayed gray scale and brightness according to a second gamma function; and A third group of pixels is used to determine the relationship between the displayed grayscale and brightness according to a third gamma function; and a drive unit, electrically coupled to the first, second and third groups of pixels, for determining the relationship between the gray scale and brightness displayed by the first group of pixels according to the first gamma function, and according to the second gamma The function determines the relationship between the gray scale displayed by the second group of pixels and the brightness, and determines the relationship between the gray scale displayed by the third group of pixels and the brightness according to the third gamma function; Wherein in an Nth row of the display panel, a plurality of pixels of the first group of pixels and a plurality of pixels of the third group of pixels are arranged alternately, in an (N+1)th row of the display panel, the second A plurality of pixels of the first group of pixels and a plurality of pixels of the third group of pixels are alternately arranged, and in an Mth column of the display panel, a plurality of pixels of the first group of pixels are alternately arranged with a plurality of pixels of the third group of pixels , in a (M+1)th column of the display panel, a plurality of pixels of the second group of pixels and a plurality of pixels of the third group of pixels are alternately arranged, and the Mth row is adjacent to the (M+1th) ) row, the Nth column is adjacent to the (N+1)th column, where M and N are both positive odd numbers or both positive even numbers. 17. The display panel as claimed in claim 16, wherein the ratio of the total area of the first group of pixels, the total area of the second group of pixels and the total area of the third group of pixels is substantially 1:1 :2. 18. The display panel according to claim 11 or 16, wherein the pixel group is used to display a color, and a pixel of the pixel group is arranged between two pixels of different colors, and adjacent The two pixels.