Display panel, compensation method thereof and generation device of compensation gray scale

Abstract

The application provides a display panel and a compensation method and a compensation gray scale generation device thereof. The method comprises the following steps: dividing a display area of the display panel into at least a first display part comprising a plurality of first sub-pixels and a second display part comprising a plurality of second sub-pixels (different in color from the first sub-pixels); obtaining a first compensation gray scale and a second compensation gray scale corresponding to the first sub-pixels and the second sub-pixels under a first original gray scale, wherein the first compensation gray scale and the second compensation gray scale are determined according to at least a second luminance of the second sub-pixels and a first luminance of the first sub-pixels under the first original gray scale, respectively; and controlling the first sub-pixels and the second sub-pixels to emit light under the first original gray scale, and controlling the first sub-pixels to emit light under the first compensation gray scale and the second sub-pixels to emit light under the second compensation gray scale, thereby improving the uniformity of the overall display picture.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to the manufacture of display devices, specifically to display panels and their compensation methods, and equipment for generating compensated grayscale. Background Technology

[0002] Currently, considering the cost of data driver chips, display terminals can adopt a three-gate drive architecture to reduce the number of data lines to 1 / 3 of the normal drive architecture, while increasing the number of scan lines to 3 times that of the normal drive architecture, so that the width and charging time of each gate pulse are also reduced to 1 / 3 of the normal drive architecture.

[0003] In a tri-gate drive architecture, on the one hand, the reduced number of data driver chips leads to a larger distance between adjacent data driver chips, resulting in significant differences in the attenuation of electrical signals transmitted to adjacent data driver chips; on the other hand, such as Figure 1 As shown, when displaying a solid color image, the amplitude of the signal on the same data line (Da1, Da2, Da3 to Dan) is always in a state of high and low variation, which is a heavy image. In addition, after each gate line (G1, G2, G3 to Gn) turns on the corresponding row of pixels, the charging time of each row of pixels is insufficient, which will make the brightness difference of the display area controlled by the two adjacent data driver chips more obvious, resulting in a stronger sense of boundary.

[0004] Therefore, the strong sense of boundary in the displayed image of the existing tri-gate driving architecture display terminal urgently needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to provide a display panel and its compensation method, as well as a grayscale compensation generation device, to improve the technical problem of boundary perception in the display screen of existing tri-gate drive architecture display terminals.

[0006] This invention provides a compensation method for a display panel, comprising:

[0007] The display area of ​​the display panel is divided into at least a first display portion and a second display portion. The first display portion includes a plurality of first sub-pixels, and the second display portion includes a plurality of second sub-pixels. The colors of the first sub-pixels and the second sub-pixels are the same.

[0008] Obtain a first compensated gray level corresponding to the first original gray level of the first sub-pixel, and obtain a second compensated gray level corresponding to the first original gray level of the second sub-pixel. The first compensated gray level is determined at least based on the second brightness of the second sub-pixel under the first original gray level, and the second compensated gray level is determined at least based on the first brightness of the first sub-pixel under the first original gray level.

[0009] The first sub-pixel of the first part and the second sub-pixel of the first part are controlled to emit light under the first original gray level, and the first sub-pixel of the second part is controlled to emit light under the first compensated gray level, and the second sub-pixel of the second part is controlled to emit light under the second compensated gray level.

[0010] In one embodiment, the steps of obtaining the first compensated gray level corresponding to the first original gray level of the first sub-pixel and obtaining the second compensated gray level corresponding to the first original gray level of the second sub-pixel include:

[0011] Obtain the first brightness of the first sub-pixel at the first original grayscale and the second brightness of the second sub-pixel at the first original grayscale;

[0012] Based at least on the second brightness, a first compensated gray level corresponding to the first sub-pixel is determined, and based at least on the first brightness, a second compensated gray level corresponding to the second sub-pixel is determined.

[0013] In one embodiment, the first compensated gray level is the gray level value of the first sub-pixel corresponding to the second brightness, and the second compensated gray level is the gray level value of the second sub-pixel corresponding to the first brightness.

[0014] In one embodiment, the number of first sub-pixels in the first portion is equal to the number of second sub-pixels in the second portion, and the number of first sub-pixels in the second portion is equal to the number of second sub-pixels in the first portion.

[0015] In one embodiment, the first portion of the first sub-pixel includes a plurality of first sub-pixel groups, and the second portion of the first sub-pixel includes a plurality of second sub-pixel groups, wherein the plurality of first sub-pixel groups and the plurality of second sub-pixel groups are alternately arranged along a first direction;

[0016] The first part of the second sub-pixel includes a plurality of third sub-pixel groups, and the second part of the second sub-pixel includes a plurality of fourth sub-pixel groups, and the plurality of third sub-pixel groups and the plurality of fourth sub-pixel groups are alternately arranged along the first direction.

[0017] In one embodiment, the display panel includes a first source driver chip and a second source driver chip, the first display portion is electrically connected to the first source driver chip, the second display portion is electrically connected to the second source driver chip, or both the first display portion and the second display portion are electrically connected to the first source driver chip, and the resistance between the two and the first source driver chip is different.

[0018] In one embodiment, the method further includes:

[0019] The display area of ​​the display panel is further divided into at least a third display section and a fourth display section. The third display section includes a plurality of third sub-pixels, and the fourth display section includes a plurality of fourth sub-pixels. The colors of the third sub-pixels and the fourth sub-pixels are the same as the colors of the first sub-pixels.

[0020] Obtain the third compensated gray level corresponding to the first original gray level of the third sub-pixel, and obtain the fourth compensated gray level corresponding to the first original gray level of the fourth sub-pixel. The third compensated gray level is determined at least based on the fourth brightness of the fourth sub-pixel under the first original gray level, and the fourth compensated gray level is determined at least based on the third brightness of the third sub-pixel under the first original gray level.

[0021] The display area of ​​the display panel is further divided into at least a fifth display section and a sixth display section. The fifth display section includes a plurality of fifth sub-pixels, and the sixth display section includes a plurality of sixth sub-pixels. The colors of the fifth sub-pixels and the sixth sub-pixels are the same as the colors of the first sub-pixels.

[0022] Based on the first compensated gray level and the third compensated gray level, the fifth sub-pixel is determined to correspond to the fifth compensated gray level of the first original gray level, and based on the second compensated gray level and the fourth compensated gray level, the sixth sub-pixel is determined to correspond to the sixth compensated gray level of the first original gray level.

[0023] The fifth sub-pixel and the sixth sub-pixel of the first part are controlled to emit light at the first original gray level, and the fifth sub-pixel of the second part is controlled to emit light at the fifth compensated gray level, and the sixth sub-pixel of the second part is controlled to emit light at the sixth compensated gray level;

[0024] The first display unit, the third display unit, and the fifth display unit are all electrically connected to the first source driver chip, and each of them has a first resistor, a third resistor, and a fifth resistor respectively between itself and the first source driver chip. The second display unit, the fourth display unit, and the sixth display unit are all electrically connected to the second source driver chip, and each of them has a second resistor, a fourth resistor, and a sixth resistor respectively between itself and the second source driver chip. The first resistor is equal to the second resistor, the third resistor is equal to the fourth resistor, and the fifth resistor is equal to the sixth resistor.

[0025] Alternatively, the first display unit and the second display unit are both electrically connected to the first source driver chip, and each has a first resistor and a second resistor between itself and the first source driver chip, respectively. The third display unit and the fourth display unit are both electrically connected to the second source driver chip, and each has a third resistor and a fourth resistor between itself and the second source driver chip, respectively. The fifth display unit and the sixth display unit are both electrically connected to the third source driver chip, and each has a fifth resistor and a sixth resistor between itself and the third source driver chip, respectively. The first resistor, the third resistor, and the fifth resistor are equal, and the second resistor, the fourth resistor, and the sixth resistor are equal.

[0026] In one embodiment, the method further includes:

[0027] Based on the first compensated gray level and the second compensated gray level, the third sub-pixel in the third display unit is determined to correspond to the third compensated gray level of the first original gray level.

[0028] The third sub-pixel described in the first part is controlled to emit light at the first original gray level, and the third sub-pixel described in the second part emits light at the third compensated gray level;

[0029] The first display unit, the second display unit, and the third display unit are all electrically connected to the first source driver chip, or the three are electrically connected to the first source driver chip, the second source driver chip, and the third source driver chip respectively, and the resistance between the three and the first source driver chip, the second source driver chip, and the third source driver chip is equal.

[0030] In one embodiment, the method further includes:

[0031] Obtain the third compensated gray level corresponding to the second original gray level of the first sub-pixel, and obtain the fourth compensated gray level corresponding to the second original gray level of the second sub-pixel. The three compensated gray levels are determined at least based on the fourth brightness of the second sub-pixel under the second original gray level, and the fourth compensated gray level is determined at least based on the third brightness of the first sub-pixel under the second original gray level.

[0032] Based on the first compensated gray level and the third compensated gray level, a fifth compensated gray level corresponding to the third original gray level is determined for the first sub-pixel, and a sixth compensated gray level corresponding to the third original gray level is determined based on the second compensated gray level and the fourth compensated gray level.

[0033] In one embodiment, before the steps of obtaining the first compensated gray level corresponding to the first original gray level of the first sub-pixel and obtaining the second compensated gray level corresponding to the first original gray level of the second sub-pixel, the method includes:

[0034] Obtain a first mapping relationship between the brightness value and grayscale value of the first sub-pixel, and a second mapping relationship between the brightness value and grayscale value of the second sub-pixel;

[0035] The first brightness, the second brightness, the first compensated gray level, and the second compensated gray level are determined according to the first mapping relationship and the second mapping relationship.

[0036] In one embodiment, the first display unit further includes a plurality of third sub-pixels, and the second display unit further includes a plurality of fourth sub-pixels, wherein the color of the third sub-pixels is the same as the color of the fourth sub-pixels, and both colors are different from the color of the first sub-pixels;

[0037] The step of obtaining the first compensated gray level corresponding to the first original gray level of the first sub-pixel and obtaining the second compensated gray level corresponding to the first original gray level of the second sub-pixel includes:

[0038] The third sub-pixel and the fourth sub-pixel of the first part are controlled to emit light under the first original gray level, and the third sub-pixel of the second part is controlled to emit light under the first compensated gray level, and the fourth sub-pixel of the second part is controlled to emit light under the second compensated gray level.

[0039] The present invention also provides a display panel for performing the compensation method of the display panel as described in any of the above descriptions.

[0040] The present invention also provides a device for generating compensated gray levels, for generating a first compensated gray level and a second compensated gray level as described above.

[0041] This invention provides a display panel and its compensation method, as well as a device for generating compensated grayscale. By acquiring a first compensated grayscale corresponding to a first original grayscale of a first sub-pixel in a first display section, and acquiring a second compensated grayscale corresponding to the first original grayscale of a second sub-pixel in a second display section, wherein the colors of the first and second sub-pixels are the same, the first compensated grayscale is determined at least based on a second brightness of the second sub-pixel under the first original grayscale, and the second compensated grayscale is determined at least based on a first brightness of the first sub-pixel under the first original grayscale; controlling a first portion of the first sub-pixel and a first portion of the second sub-pixel to emit light under the first original grayscale, controlling a second portion of the first sub-pixel to emit light under the first compensated grayscale, and controlling a second portion of the second sub-pixel to emit light under the second compensated grayscale, the brightness difference of the display image in different areas of the display panel is effectively reduced, improving the overall uniformity of the display image. Attached Figure Description

[0042] The present invention will be further described below with reference to the accompanying drawings. It should be noted that the accompanying drawings described below are merely for illustrating some embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0043] Figure 1 This is a schematic diagram showing the connection of pixels, gate lines, and data lines in a display panel with a tri-gate driving architecture provided in an embodiment of the present invention.

[0044] Figure 2 , 5 9, 12, and 15 are flowcharts of five embodiments of the compensation method for the display panel provided in the present invention.

[0045] Figure 3 Gamma curves of sub-pixels of a display panel provided in an embodiment of the present invention.

[0046] Figure 4 This is a schematic diagram of the sub-pixels and light emission of both the first display portion and the second display portion in a display panel provided in an embodiment of the present invention.

[0047] Figures 6 to 8 Figures 10 to 11 and 13 to 14 are schematic diagrams showing the connection of multiple components in the display panel provided in the embodiments of the present invention. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0049] In the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. Furthermore, it should be noted that the accompanying drawings only provide structures closely related to the invention, omitting some details less relevant to the invention. The purpose is to simplify the drawings and make the inventive points clear at a glance, not to indicate that the actual device is identical to the accompanying drawings. Figure 1 It is identical, but this is not a limitation of the actual device.

[0050] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase at various points in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] The present invention provides a compensation method for a display panel, the method including but not limited to the following embodiments and combinations thereof.

[0052] In one embodiment, such as Figure 2 As shown, the compensation method for the display panel includes, but is not limited to, the following steps.

[0053] S1, obtain a first compensated gray level corresponding to the first original gray level of the first sub-pixel in the first display unit, and obtain a second compensated gray level corresponding to the first original gray level of the second sub-pixel in the second display unit, wherein the color of the first sub-pixel is the same as the color of the second sub-pixel, the first compensated gray level is determined at least based on the second brightness of the second sub-pixel under the first original gray level, and the second compensated gray level is determined at least based on the first brightness of the first sub-pixel under the first original gray level.

[0054] Specifically, the display panel, which includes a first display unit and a second display unit, can be a self-emissive display panel or a liquid crystal display panel. In the self-emissive display panel, sub-pixels emit light through self-emissive devices driven by a driving current generated by a data voltage; the brightness of the sub-pixels is related to the current flowing through the self-emissive devices and the duration of the current's action. In the liquid crystal display panel, sub-pixels emit light through a backlight source passing through a liquid crystal layer; the transmittance of the liquid crystal layer is related to the voltage applied across the liquid crystal layer.

[0055] The steps prior to step S1 may include, but are not limited to, the following: dividing the display area of ​​the display panel into at least a first display portion and a second display portion, wherein the first display portion includes a plurality of first sub-pixels, the second display portion includes a plurality of second sub-pixels, and the colors of the first sub-pixels and the second sub-pixels are the same.

[0056] Prior to step S1, the steps may include, but are not limited to, the following: obtaining a first mapping relationship between the brightness value and grayscale value of the first sub-pixel, and a second mapping relationship between the brightness value and grayscale value of the second sub-pixel. Furthermore, the first brightness, the second brightness, the first compensated grayscale, and the second compensated grayscale are determined based on the first mapping relationship and the second mapping relationship.

[0057] Specifically, each sub-pixel in the display panel can have a corresponding gamma mapping relationship (which may include, but is not limited to, gamma curves or gamma tables). Here, we will use a gamma curve as an example. Furthermore, if we do not consider the differences between different areas of the display panel, we can assume that sub-pixels of the same color correspond to the same gamma curve. Specifically, such as... Figure 3 As shown, the horizontal axis of the gamma curve represents the grayscale value corresponding to the data voltage applied to a sub-pixel. It can be assumed that there is a one-to-one correspondence between the grayscale value and the data voltage. The vertical axis of the gamma curve represents the brightness value emitted by the sub-pixel under the influence of that voltage value. It can be assumed that the relationship between the brightness value and the grayscale value differs in different gamma curves. Specifically, considering the differences between different areas in the display panel, even if the first sub-pixel in the first display unit and the second sub-pixel in the second display unit have the same color, they can each have a first gamma curve (included in the first mapping relationship) and a second gamma curve (included in the second mapping relationship) as their respective gamma curves.

[0058] Specifically, in step S1 of this embodiment, the first brightness can be the brightness value corresponding to the grayscale value in the first gamma curve being equal to the first original grayscale value. Similarly, the second brightness can be the brightness value corresponding to the grayscale value in the second gamma curve being equal to the first original grayscale value. The first brightness is not equal to the second brightness, and the difference between the two can represent the brightness difference presented by sub-pixels of the same color (e.g., green) (i.e., the first sub-pixel and the second sub-pixel) when their grayscale values ​​are both equal to the first original grayscale value. It should be noted that if the above-mentioned brightness difference exists, it will at least cause sub-pixels of the same color (e.g., green) in the first display unit and the second display unit to present different brightness values ​​when they emit light under the same data voltage, resulting in uneven screen display.

[0059] As discussed above, in this embodiment, the first compensation gray level can be determined based on the first gamma curve, at least according to the gray level value corresponding to the data voltage required to be applied when the first sub-pixel emits light at the second brightness. Similarly, the second compensation gray level can be determined based on the second gamma curve, at least according to the gray level value corresponding to the data voltage required to be applied when the second sub-pixel emits light at the first brightness. Therefore, it can be considered that the first compensation gray level takes into account the difference between the first gamma curve of the first sub-pixel and the second gamma curve of the second sub-pixel under the first original gray level, and the second compensation gray level also takes into account the difference between the second gamma curve of the second sub-pixel and the first gamma curve of the first sub-pixel under the first original gray level.

[0060] S2, control the first sub-pixel of the first part and the second sub-pixel of the first part to emit light under the first original gray level, and control the first sub-pixel of the second part to emit light under the first compensated gray level, and control the second sub-pixel of the second part to emit light under the second compensated gray level.

[0061] Specifically, as discussed above, this embodiment can be presented as follows: In the first display unit, the first sub-pixel of the first part emits light under the first original gray level to present a first brightness, and the second sub-pixel of the second part emits light under the first compensated gray level to present a brightness (first compensated brightness) limited by the second brightness; In the second display unit, the second sub-pixel of the first part emits light under the second original gray level to present a second brightness (second compensated brightness), and the second sub-pixel of the second part emits light under the second compensated gray level to present a brightness limited by the first brightness.

[0062] Understandably, the final brightness displayed in the first display unit is composed of multiple first brightness levels and multiple first compensation brightness levels (limited by the second brightness level). Compared to being composed entirely of first brightness levels, it is closer to the total brightness of the second display unit, which is composed entirely of second brightness levels, thereby reducing the difference between the displayed images of the first and second display units. Furthermore, the final brightness displayed in the second display unit is composed of multiple second brightness levels and multiple second compensation brightness levels (limited by the first brightness level). Compared to being composed entirely of second brightness levels, it is closer to the total brightness of the first display unit, which is composed entirely of first brightness levels, thereby similarly reducing the difference between the displayed images of the second and first display units. Therefore, this embodiment can effectively reduce the brightness difference of the displayed images in different areas of the display panel and improve the overall uniformity of the displayed image.

[0063] Specifically, the first compensation grayscale is the grayscale value of the first sub-pixel corresponding to the second brightness, and the second compensation grayscale is the grayscale value of the second sub-pixel corresponding to the first brightness. Specifically, the first compensation grayscale is obtained based on the first gamma curve, corresponding to the grayscale value of the data voltage required for the first sub-pixel to emit light at the second brightness. Similarly, the second compensation grayscale can be obtained based on the second gamma curve, corresponding to the grayscale value of the data voltage required for the second sub-pixel to emit light at the first brightness. In other words, the final brightness displayed in the first display unit is composed of multiple first brightness levels and multiple second brightness levels, and the final brightness displayed in the second display unit is composed of multiple second brightness levels and multiple first brightness levels. Therefore, the final brightness displayed in both display units can be composed of the first brightness level and the second brightness level, and since the constituent elements are the same, the total brightness can be similar.

[0064] Furthermore, the number of first sub-pixels in the first part is equal to the number of second sub-pixels in the second part, and the number of first sub-pixels in the second part is equal to the number of second sub-pixels in the first part. As discussed above, it can be assumed that the number of first sub-pixels presenting a first brightness in the first display unit is equal to the number of second sub-pixels presenting a second compensated brightness (e.g., equal to the first brightness) in the second display unit, and the number of first sub-pixels presenting a first compensated brightness (e.g., equal to the second brightness) in the first display unit is equal to the number of second sub-pixels presenting a second brightness in the second display unit. This means that the number of sub-pixels presenting a first brightness in both display units is the same, and the number of sub-pixels presenting a second brightness can also be the same, so that the final brightness presented by the two display units can be further equal.

[0065] Among them, such as Figure 4As shown, in the first display unit A1, the first sub-pixel of the first part includes a plurality of first sub-pixel groups 101, and the first sub-pixel of the second part includes a plurality of second sub-pixel groups 102. The plurality of first sub-pixel groups 101 and the plurality of second sub-pixel groups 102 are alternately arranged along the first direction D1. In the second display unit A2, the second sub-pixel of the first part includes a plurality of third sub-pixel groups 103, and the second sub-pixel of the second part includes a plurality of fourth sub-pixel groups 104. The plurality of third sub-pixel groups 103 and the plurality of fourth sub-pixel groups 104 are alternately arranged along the first direction.

[0066] Specifically, in combination Figure 1 As shown, the three-gate driving architecture is used as an example for explanation. Each row of sub-pixels can have the same color, and the colors of two adjacent rows of sub-pixels can be different. For example, in the first direction D1 (column direction), a row of blue sub-pixels B, a row of green sub-pixels G, and a row of red sub-pixels R can be arranged in sequence as the smallest repeating unit. In the second direction D2 (row direction), multiple columns of sub-pixels can be arranged, and each column of sub-pixels can be arranged in sequence as a blue sub-pixel B, a green sub-pixel G, and a red sub-pixel R as the smallest repeating unit.

[0067] Taking the example where both the first and second sub-pixels are green sub-pixels G, the first sub-pixel group 101 and the second sub-pixel group 102 in this embodiment can be green sub-pixels G located in odd-numbered rows (e.g., rows 1 and 3 in the first display unit A1) and green sub-pixels G located in even-numbered rows (e.g., rows 2 and 4 in the first display unit A1) in multiple rows of first sub-pixels (green sub-pixels G); similarly, the third sub-pixel group 103 and the fourth sub-pixel group 104 can be green sub-pixels G located in odd-numbered rows (e.g., rows 1 and 3 in the second display unit A2) and green sub-pixels G located in even-numbered rows (e.g., rows 2 and 4 in the second display unit A2) in multiple rows of second sub-pixels (green sub-pixels G).

[0068] Specifically, such as Figure 4 As shown, taking a first original gray level of 48 as an example, if the brightness presented when the gray level value of the first sub-pixel in the first display unit A1 is equal to 70 is the same as the brightness presented when the gray level value of the second sub-pixel in the second display unit A2 is the first original gray level (equal to 48) (second brightness), then the first compensation gray level is equal to 70; similarly, if the brightness presented when the gray level value of the second sub-pixel in the second display unit A2 is equal to 30 is the same as the brightness presented when the gray level value of the first sub-pixel in the first display unit A1 is the first original gray level (equal to 48) (first brightness), then the second compensation gray level is equal to 30.

[0069] Understandably, this arrangement allows for a uniform distribution of the first sub-pixels displaying the first and second brightness levels in the first display unit A1, and also a uniform distribution of the second sub-pixels displaying the first and second brightness levels in the second display unit A2, thereby improving the uniformity of brightness in a smaller display area. Of course, the sub-pixels displaying the first and second brightness levels in the two display units can also be arranged in other ways to achieve a uniform distribution, such as alternating distribution in the row direction or alternating distribution in both the row and column directions.

[0070] Specifically, in conjunction with the discussion above, that is, as... Figure 5 As shown, step S1 may include, but is not limited to, the following steps.

[0071] S101, obtain the first brightness of the first sub-pixel in the first display unit under the first original grayscale, and the second brightness of the second sub-pixel in the second display unit under the first original grayscale.

[0072] As discussed above, the first brightness and the second brightness can be determined based on the first gamma curve and the second gamma curve, respectively.

[0073] S102, at least based on the second brightness, determine the first compensated gray level corresponding to the first sub-pixel, and at least based on the first brightness, determine the second compensated gray level corresponding to the second sub-pixel.

[0074] As discussed above, the first compensated gray level and the second compensated gray level can also be determined based on the first gamma curve and the second gamma curve, respectively.

[0075] It should be noted that in Case 1, the executing entity of step S1 and the executing entities of steps S101 to S102 can be the display panel itself and non-panel entities (e.g., the grayscale compensation generation device), respectively. That is, it can be assumed that before the panel leaves the factory, the display panel can be debugged by the grayscale compensation generation device using, but not limited to, steps S101 and S102, to determine the first compensated grayscale corresponding to the first original grayscale of the first sub-pixel and the second compensated grayscale corresponding to the first original grayscale of the second sub-pixel, and the first compensated grayscale and the second compensated grayscale are stored in the display panel. After the panel leaves the factory, the above compensated grayscale can be called as needed during the display process to execute step S2 (executed by the display panel). In Case 1, the executing entity of step S1 and the executing entities of steps S101 to S102 can both be the display panel itself. That is, the display panel can determine and directly call the first and second compensated grayscale before or after leaving the factory.

[0076] In one embodiment, such as Figures 6 to 8As shown, the display panel 100 includes a first source driver chip 001 and a second source driver chip 002, wherein, as Figure 6 and Figure 7 As shown, the first display unit A1 and the second display unit A2 are electrically connected to the first source driver chip 001 and the second source driver chip 002, respectively, or, as... Figure 8 As shown, both the first display unit A1 and the second display unit A2 are electrically connected to the first source driver chip 001, and the resistance between the two and the first source driver chip 001 is different.

[0077] Specifically, the display panel 100 may also include a motherboard 200 electrically connected to multiple source driver chips (including but not limited to a first source driver chip 001 and a second source driver chip 002). The motherboard may include, but is not limited to, a power management module 201 and a timing control module 202. The power management module 201 can transmit gamma voltage to each source driver chip and transmit corresponding image signals and operating voltages to the timing control module 202. Under the drive of the operating voltage, the timing control module 202 converts the image signals and transmits them to the corresponding raw data signals of each source driver chip. Each source driver chip can generate data signals loaded onto the corresponding sub-pixels based on the gamma voltage and the corresponding raw data signals.

[0078] It should be noted that, on the one hand, due to the difference in transmission distance between the power management module 201 and different source driver chips, for example, when the power management module 201 is set close to the middle of the display panel 100, it can be assumed that the gamma voltage will first pass through the second source driver chip 002 and then through the first source driver chip 001. Considering the influence of the component resistance, the data voltage acting on the first display unit A1 electrically connected to the first source driver chip 001 is less than the data voltage acting on the second display unit A2 electrically connected to the second source driver chip 002, which will cause uneven screen display. On the other hand, even for the first display unit A1 and the second display unit A2 electrically connected to the first source driver chip 001, due to the difference in transmission distance between the first source driver chip 001 and the two, the resistance between the two and the first source driver chip 001 is different, which will also cause uneven screen display.

[0079] It is understandable that by configuring the first display unit A1 and the second display unit A2 in the above two scenarios as described in this embodiment, the uneven screen display caused by at least one of the above two reasons can be improved. Furthermore, as... Figure 6 and Figure 7As shown, if the display panel 100 is divided into a fourth display section A4 and a third display section A3, which are symmetrical to the first display section A1 and the second display section A2 respectively, then the transmission distance between the power management module 201 and the second display section A2 and the third display section A3 can be considered to be equivalent. It can be assumed that there is almost no "boundary line" between their display screens. Therefore, the method described above for improving the "boundary line" between the first display section A1 and the second display section A2 can be used to improve the "boundary line" between the third display section A3 and the fourth display section A4. Similarly, as... Figure 8 As shown, if the fourth display unit A4 and the third display unit A3 are symmetrical about the first display unit A1 and the second display unit A2 respectively in the first direction D1, the above method can also be used to improve the "boundary line" between the third display unit A3 and the fourth display unit A4.

[0080] In one embodiment, such as Figure 9 As shown, the method may also include, but is not limited to, the following steps and combinations thereof.

[0081] S3, obtain the third compensated gray level corresponding to the first original gray level of the third sub-pixel in the third display unit, and obtain the fourth compensated gray level corresponding to the first original gray level of the fourth sub-pixel in the fourth display unit. The color of the third sub-pixel and the color of the fourth sub-pixel are the same as the color of the first sub-pixel. The third compensated gray level is determined at least based on the fourth brightness of the fourth sub-pixel under the first original gray level, and the fourth compensated gray level is determined at least based on the third brightness of the third sub-pixel under the first original gray level.

[0082] Similarly, before step S3, the following steps may be included, but not limited to: further dividing the display area of ​​the display panel into at least a third display portion and a fourth display portion, wherein the third display portion includes a plurality of third sub-pixels, the fourth display portion includes a plurality of fourth sub-pixels, and the colors of the third sub-pixels and the fourth sub-pixels are the same as the color of the first sub-pixel.

[0083] Specifically, the third display unit, third sub-pixel, fourth display unit, and fourth sub-pixel in this embodiment can be referred to the relevant descriptions of the first display unit, first sub-pixel, second display unit, and second sub-pixel above. The description of obtaining the third compensation grayscale and the fourth compensation grayscale in this embodiment can be referred to the description of obtaining the first compensation grayscale and the second compensation grayscale in step S1 above.

[0084] S4, based on the first compensated gray level and the third compensated gray level, it is determined that the fifth sub-pixel in the fifth display unit corresponds to the fifth compensated gray level of the first original gray level, and based on the second compensated gray level and the fourth compensated gray level, it is determined that the sixth sub-pixel in the sixth display unit corresponds to the sixth compensated gray level of the first original gray level, wherein the color of the fifth sub-pixel and the color of the sixth sub-pixel are the same as the color of the first sub-pixel.

[0085] Similarly, before step S3, the following steps may be included, but not limited to: further dividing the display area of ​​the display panel into at least a fifth display section and a sixth display section, wherein the fifth display section includes a plurality of fifth sub-pixels, the sixth display section includes a plurality of sixth sub-pixels, and the colors of the fifth sub-pixels and the sixth sub-pixels are the same as the color of the first sub-pixel.

[0086] Among them, such as Figure 10 As shown, the first display unit A1, the third display unit A3, and the fifth display unit A5 are all electrically connected to the first source driver chip 001, and each of them has a first resistor, a third resistor, and a fifth resistor between itself and the first source driver chip 001, respectively. The second display unit A2, the fourth display unit A4, and the sixth display unit A6 are all electrically connected to the second source driver chip 002, and each of them has a second resistor, a fourth resistor, and a sixth resistor between itself and the second source driver chip 002, respectively. The first resistor is equal to the second resistor, the third resistor is equal to the fourth resistor, and the fifth resistor is equal to the sixth resistor. Figure 10 The connection structure shown can be considered as follows: the first display unit A1, the third display unit A3, and the fifth display unit A5 are arranged in the same column (the relative positions of the three are not limited); the second display unit A2, the fourth display unit A4, and the sixth display unit A6 are arranged in the same column (the relative positions of the three are the same as the previous three); the first display unit A1 and the second display unit A2 are arranged in the same row; the fifth display unit A5 and the sixth display unit A6 are arranged in the same row; and the third display unit A3 and the fourth display unit A4 are arranged in the same row.

[0087] Or, such as Figure 11As shown, the first display unit A1 and the second display unit A2 are both electrically connected to the first source driver chip 001, and each has a first resistor and a second resistor between itself and the first source driver chip 001, respectively. The third display unit A3 and the fourth display unit A4 are both electrically connected to the second source driver chip 002, and each has a third resistor and a fourth resistor between itself and the second source driver chip 002, respectively. The fifth display unit A5 and the sixth display unit A6 are both electrically connected to the third source driver chip 003, and each has a fifth resistor and a sixth resistor between itself and the third source driver chip 003, respectively. The first resistor, the third resistor, and the fifth resistor are equal, and the second resistor, the fourth resistor, and the sixth resistor are equal. Figure 11 The connection structure shown can be considered as follows: the first display unit A1, the third display unit A3, and the fifth display unit A5 are arranged in the same row (the relative positions of the three are not limited); the second display unit A2, the fourth display unit A4, and the sixth display unit A6 are arranged in the same row (the relative positions of the three are the same as the previous three); the first display unit A1 and the second display unit A2 are arranged in the same column; the fifth display unit A5 and the sixth display unit A6 are arranged in the same column; and the third display unit A3 and the fourth display unit A4 are arranged in the same column.

[0088] Specifically, the resistance value mentioned in this embodiment can be equivalent to describing the length of the transmission path between the sub-pixel and the corresponding source driver chip. In this embodiment, the fifth compensation gray level and the sixth compensation gray level can be determined by, but not limited to, using linear interpolation. For example, the fifth compensation gray level corresponding to the fifth sub-pixel can be determined based on the degree of difference between the first compensation gray level and the third compensation gray level, as well as the relative position of the fifth sub-pixel, the first sub-pixel, and the third sub-pixel. The sixth compensation gray level can be determined in the same way.

[0089] S5, control the fifth sub-pixel of the first part and the sixth sub-pixel of the first part to emit light under the first original gray level, and control the fifth sub-pixel of the second part to emit light under the fifth compensated gray level, and control the sixth sub-pixel of the second part to emit light under the sixth compensated gray level.

[0090] Similarly, the light emission mode of the third sub-pixel in the third display unit A3 and the fourth sub-pixel in the fourth display unit A4 can be controlled by referring to step S2. The light emission mode of the fifth sub-pixel in the fifth display unit A5 and the sixth sub-pixel in the sixth display unit A6 is also controlled as in step S2.

[0091] Similarly, this embodiment can reduce the difference between the display images of the third display unit A3 and the fourth display unit A4, and can also reduce the difference between the display images of the fifth display unit A5 and the sixth display unit A6. Therefore, this embodiment can further effectively reduce the brightness difference of the display images in different areas of the display panel, and improve the overall uniformity of the display image.

[0092] In one embodiment, such as Figure 12 As shown, the method may also include, but is not limited to, the following steps and combinations thereof.

[0093] S6, based on the first compensated gray level and the second compensated gray level, determine the third compensated gray level of the third sub-pixel in the third display unit corresponding to the first original gray level.

[0094] Among them, such as Figure 13 As shown, the first display unit A1, the second display unit A2, and the third display unit A3 are all electrically connected to the first source driver chip 001, based on... Figure 13 The connection structure shown can be considered as the first display unit A1, the second display unit A2, and the third display unit A3 being arranged in the same row;

[0095] Or, such as Figure 14 As shown, the three are electrically connected to the second source driver chip 002, the third source driver chip 003, and the fourth source driver chip 004 respectively (here, the example is illustrated with the first source driver chip 001 to the fourth source driver chip 004), and the resistance between each of the three and the second source driver chip 002, the third source driver chip 003, and the fourth source driver chip 004 is equal (since the second source driver chip 002 to the fourth source driver chip 004 are located close to the center of the display panel 100, the horizontal distance between any two of them can be ignored here), based on Figure 14 The connection structure shown can be considered as the first display unit A1, the second display unit A2, and the third display unit A3 being arranged in the same row.

[0096] Specifically, as discussed above, the first compensation gray level is determined at least based on the second brightness of the second sub-pixel under the first original gray level, and the second compensation gray level is determined at least based on the first brightness of the first sub-pixel under the first original gray level. Furthermore, it can be assumed that the brightness of the first sub-pixel under the first compensation gray level is equal to the second brightness, and the brightness of the second sub-pixel under the second compensation gray level is equal to the first brightness. Similarly, the third compensation gray level can be determined by, but is not limited to, using linear interpolation. For example, the third gray level compensation corresponding to the third sub-pixel can be determined based on the degree of difference between the first and second compensation gray levels and the relative positions of the third sub-pixel, the first sub-pixel, and the second sub-pixel.

[0097] S7, control the third sub-pixel of the first part to emit light under the first original gray level, and control the third sub-pixel of the second part to emit light under the third compensated gray level.

[0098] Understandably, based on the above discussion, the total brightness of both the first display unit A1 and the second display unit A2 is composed of multiple first brightness levels and multiple second brightness levels. Ultimately, all sub-pixels of that color will present a brightness value between the first brightness level and the second brightness level. The brightness of the two can be equal. It can be considered that the third sub-pixel in this embodiment emits light at the first original gray level and the third compensated gray level, respectively, presenting a third brightness level and a fourth brightness level. For example, when the third display unit A3 is located between the first display unit A1 and the second display unit A2, it can be considered that the third compensated gray level is between the first compensated gray level and the second compensated gray level, and the third brightness level and the fourth brightness level (which can also be equal) are both between the first brightness level and the second brightness level. Furthermore, the total brightness of the third display unit A3 can be close to the total brightness of the first display unit A1 and the total brightness of the second display unit A2.

[0099] In one embodiment, such as Figure 15 As shown, the method may also include, but is not limited to, the following steps and combinations thereof.

[0100] S8, obtain the third compensated gray level corresponding to the second original gray level of the first sub-pixel, and obtain the fourth compensated gray level corresponding to the second original gray level of the second sub-pixel. The three compensated gray levels are determined at least based on the fourth brightness of the second sub-pixel under the second original gray level, and the fourth compensated gray level is determined at least based on the third brightness of the first sub-pixel under the second original gray level.

[0101] The second original gray level may not be equal to the first original gray level. Similarly, referring to the discussion in step S1, this embodiment can obtain the third and fourth compensated gray levels corresponding to the second original gray level for the first sub-pixel and the second sub-pixel, respectively.

[0102] S9, based on the first compensated gray level and the third compensated gray level, determine the fifth compensated gray level corresponding to the third original gray level for the first sub-pixel, and based on the second compensated gray level and the fourth compensated gray level, determine the sixth compensated gray level corresponding to the third original gray level for the second sub-pixel.

[0103] The third original gray level may not be equal to the first and second original gray levels. Similarly, in this embodiment, the fifth and sixth compensated gray levels can be determined by, but is not limited to, linear interpolation. For example, based on the degree of difference between the first and third compensated gray levels and the relative positions of the third, first, and second original gray levels, the fifth compensated gray level corresponding to the third original gray level of the first sub-pixel can be determined, and the sixth compensated gray level can be determined in the same way.

[0104] In one embodiment, after step S2, the following steps may be included, but are not limited to: controlling the first portion of the third sub-pixel in the first display unit and the first portion of the fourth sub-pixel in the second display unit to emit light under the first original grayscale, controlling the second portion of the third sub-pixel in the first display unit to emit light under the first compensated grayscale, and controlling the second portion of the fourth sub-pixel in the second display unit to emit light under the second compensated grayscale, wherein the color of the third sub-pixel and the color of the fourth sub-pixel are the same, and both colors are different from the color of the first sub-pixel.

[0105] That is, the first display unit also includes multiple third sub-pixels, and the second display unit also includes multiple fourth sub-pixels. The colors of the third sub-pixels and the fourth sub-pixels are the same, and the colors of both are different from the colors of the first sub-pixels.

[0106] Specifically, in this embodiment, the first and second sub-pixels of the same color are respectively assigned to the first and second compensated gray levels of the first original gray level. Similarly, the third and fourth sub-pixels of the same color are respectively assigned to the two compensated gray levels of the first original gray level, thus reducing the overall computational load. Since both the first and second sub-pixels can be green, which is the primary color causing the "boundary line" in the prior art, the corresponding compensation data can also be applied to sub-pixels of other colors.

[0107] The present invention also provides a display panel for performing the compensation method of the display panel as described in any of the above descriptions.

[0108] The present invention also provides a device for generating compensated gray levels, for generating a first compensated gray level and a second compensated gray level as described above.

[0109] This invention provides a display panel and its compensation method, as well as a device for generating compensated grayscale. By acquiring a first compensated grayscale corresponding to a first original grayscale of a first sub-pixel in a first display section, and acquiring a second compensated grayscale corresponding to the first original grayscale of a second sub-pixel in a second display section, wherein the colors of the first and second sub-pixels are the same, the first compensated grayscale is determined at least based on a second brightness of the second sub-pixel under the first original grayscale, and the second compensated grayscale is determined at least based on a first brightness of the first sub-pixel under the first original grayscale; controlling a first portion of the first sub-pixel and a first portion of the second sub-pixel to emit light under the first original grayscale, controlling a second portion of the first sub-pixel to emit light under the first compensated grayscale, and controlling a second portion of the second sub-pixel to emit light under the second compensated grayscale, the brightness difference of the display image in different areas of the display panel is effectively reduced, improving the overall uniformity of the display image.

[0110] The above provides a detailed description of the display panel and its compensation method, as well as the grayscale generation device provided in the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of the present invention. 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. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A compensation method for a display panel, characterized in that, include: The display area of ​​the display panel is divided into at least a first display unit, a second display unit, a third display unit, a fourth display unit, a fifth display unit, and a sixth display unit. The first display unit includes a plurality of first sub-pixels, the second display unit includes a plurality of second sub-pixels, the third display unit includes a plurality of third sub-pixels, the fourth display unit includes a plurality of fourth sub-pixels, the fifth display unit includes a plurality of fifth sub-pixels, and the sixth display unit includes a plurality of sixth sub-pixels. The color of the first sub-pixel is the same as the color of the second sub-pixel, the color of the third sub-pixel, the color of the fourth sub-pixel, the color of the fifth sub-pixel, and the color of the sixth sub-pixel. Obtain a first compensated gray level corresponding to the first original gray level of the first sub-pixel, and obtain a second compensated gray level corresponding to the first original gray level of the second sub-pixel. The first compensated gray level is determined at least based on the second brightness of the second sub-pixel under the first original gray level, and the second compensated gray level is determined at least based on the first brightness of the first sub-pixel under the first original gray level. The first sub-pixel of the first part and the second sub-pixel of the first part are both controlled to emit light under the first original gray level, and the first sub-pixel of the second part is controlled to emit light under the first compensated gray level, and the second sub-pixel of the second part is controlled to emit light under the second compensated gray level; The method further includes: Obtain the third compensated gray level corresponding to the first original gray level of the third sub-pixel, and obtain the fourth compensated gray level corresponding to the first original gray level of the fourth sub-pixel; the third compensated gray level is determined at least based on the fourth brightness of the fourth sub-pixel under the first original gray level, and the fourth compensated gray level is determined at least based on the third brightness of the third sub-pixel under the first original gray level. Based on the first compensated gray level and the third compensated gray level, the fifth sub-pixel is determined to correspond to the fifth compensated gray level of the first original gray level, and based on the second compensated gray level and the fourth compensated gray level, the sixth sub-pixel is determined to correspond to the sixth compensated gray level of the first original gray level. The fifth sub-pixel and the sixth sub-pixel of the first part are controlled to emit light at the first original gray level, and the fifth sub-pixel of the second part is controlled to emit light at the fifth compensated gray level, and the sixth sub-pixel of the second part is controlled to emit light at the sixth compensated gray level; The first display unit, the third display unit, and the fifth display unit are all electrically connected to the first source driver chip, and each of them has a first resistor, a third resistor, and a fifth resistor respectively between itself and the first source driver chip. The second display unit, the fourth display unit, and the sixth display unit are all electrically connected to the second source driver chip, and each of them has a second resistor, a fourth resistor, and a sixth resistor respectively between itself and the second source driver chip. The first resistor is equal to the second resistor, the third resistor is equal to the fourth resistor, and the fifth resistor is equal to the sixth resistor. Alternatively, the first display unit and the second display unit are both electrically connected to the first source driver chip, and each has a first resistor and a second resistor between itself and the first source driver chip, respectively. The third display unit and the fourth display unit are both electrically connected to the second source driver chip, and each has a third resistor and a fourth resistor between itself and the second source driver chip, respectively. The fifth display unit and the sixth display unit are both electrically connected to the third source driver chip, and each has a fifth resistor and a sixth resistor between itself and the third source driver chip, respectively. The first resistor, the third resistor, and the fifth resistor are equal, and the second resistor, the fourth resistor, and the sixth resistor are equal.

2. The compensation method for the display panel as described in claim 1, characterized in that, The steps of obtaining the first compensated gray level corresponding to the first original gray level of the first sub-pixel and obtaining the second compensated gray level corresponding to the first original gray level of the second sub-pixel include: Obtain the first brightness of the first sub-pixel at the first original grayscale and the second brightness of the second sub-pixel at the first original grayscale; Based at least on the second brightness, a first compensated gray level corresponding to the first sub-pixel is determined, and based at least on the first brightness, a second compensated gray level corresponding to the second sub-pixel is determined.

3. The compensation method for the display panel as described in claim 1, characterized in that, The first compensated gray level is the gray level value of the first sub-pixel corresponding to the second brightness, and the second compensated gray level is the gray level value of the second sub-pixel corresponding to the first brightness.

4. The compensation method for the display panel as described in claim 1, characterized in that, The number of first sub-pixels in the first part is equal to the number of second sub-pixels in the second part, and the number of first sub-pixels in the second part is equal to the number of second sub-pixels in the first part.

5. The compensation method for the display panel as described in claim 4, characterized in that, The first sub-pixel of the first part includes a plurality of first sub-pixel groups, and the first sub-pixel of the second part includes a plurality of second sub-pixel groups, with the plurality of first sub-pixel groups and the plurality of second sub-pixel groups alternately arranged along a first direction; The first part of the second sub-pixel includes a plurality of third sub-pixel groups, and the second part of the second sub-pixel includes a plurality of fourth sub-pixel groups, and the plurality of third sub-pixel groups and the plurality of fourth sub-pixel groups are alternately arranged along the first direction.

6. The compensation method for a display panel as described in any one of claims 1 to 5, characterized in that, Both the first display unit and the second display unit are electrically connected to the first source driver chip, and the resistance between the two and the first source driver chip is different.

7. The compensation method for the display panel as described in claim 1, characterized in that, The method further includes: Based on the first compensated gray level and the second compensated gray level, the third sub-pixel is determined to correspond to the third compensated gray level of the first original gray level; The third sub-pixel described in the first part is controlled to emit light at the first original gray level, and the third sub-pixel described in the second part emits light at the third compensated gray level; The first display unit, the second display unit, and the third display unit are all electrically connected to the first source driver chip, or the three are electrically connected to the first source driver chip, the second source driver chip, and the third source driver chip respectively, and the resistance between the three and the first source driver chip, the second source driver chip, and the third source driver chip is equal.

8. The compensation method for a display panel as described in any one of claims 1 to 5, characterized in that, The method further includes: Obtain the third compensated gray level corresponding to the second original gray level of the first sub-pixel, and obtain the fourth compensated gray level corresponding to the second original gray level of the second sub-pixel. The three compensated gray levels are determined at least based on the fourth brightness of the second sub-pixel under the second original gray level, and the fourth compensated gray level is determined at least based on the third brightness of the first sub-pixel under the second original gray level. Based on the first compensated gray level and the third compensated gray level, a fifth compensated gray level corresponding to the third original gray level is determined for the first sub-pixel, and a sixth compensated gray level corresponding to the third original gray level is determined based on the second compensated gray level and the fourth compensated gray level.

9. The compensation method for a display panel as described in any one of claims 1 to 5, characterized in that, Before the steps of obtaining the first compensated gray level corresponding to the first original gray level of the first sub-pixel and obtaining the second compensated gray level corresponding to the first original gray level of the second sub-pixel, the steps include: Obtain a first mapping relationship between the brightness value and grayscale value of the first sub-pixel, and a second mapping relationship between the brightness value and grayscale value of the second sub-pixel; The first brightness, the second brightness, the first compensated gray level, and the second compensated gray level are determined according to the first mapping relationship and the second mapping relationship.

10. The compensation method for a display panel as described in any one of claims 1 to 5, characterized in that, The first display unit further includes a plurality of third sub-pixels, and the second display unit further includes a plurality of fourth sub-pixels. The colors of the third sub-pixels and the fourth sub-pixels are the same, and the colors of both are different from the colors of the first sub-pixels. The step of obtaining the first compensated gray level corresponding to the first original gray level of the first sub-pixel and obtaining the second compensated gray level corresponding to the first original gray level of the second sub-pixel includes: The third sub-pixel and the fourth sub-pixel of the first part are controlled to emit light under the first original gray level, and the third sub-pixel of the second part is controlled to emit light under the first compensated gray level, and the fourth sub-pixel of the second part is controlled to emit light under the second compensated gray level.

11. A display panel, characterized in that, For performing the compensation method for the display panel as described in any one of claims 1 to 10.

12. A device for generating compensated grayscale, characterized in that, Used to generate the first compensated grayscale and the second compensated grayscale as described in any one of claims 1 to 10.

Images