Display method and display device

Abstract

The application provides a display method and a display device. A pixel unit in a display panel includes first, second and third sub-pixels with different colors. The display method includes: obtaining three initial gray scale values of the three sub-pixels, each initial gray scale value corresponding to a target gray scale value (including a first target gray scale value and a second target gray scale value, and the size of the initial gray scale value is between the two values); determining a target gray scale value closing ratio (greater than 0 and less than or equal to 1) of at least one sub-pixel according to the size relationship of the three initial gray scale values and the difference of at least two initial gray scale values; determining the number of sub-pixels of the corresponding color that display the initial gray scale value, the number of sub-pixels of the corresponding color that display the target gray scale value, and / or adjusting the size of the target gray scale value according to the target gray scale value closing ratio, so that the display panel displays a picture, thereby reducing the risk of deterioration of the side viewing angle characteristics of the display panel and reducing the grid feeling of the 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 methods and display apparatus. Background Technology

[0002] LCD (Liquid Crystal Display) panels typically employ VA (Vertical Alignment) technology to improve transmittance and reduce backlight energy consumption. However, VA technology results in a narrower viewing angle for LCD panels, leading to excessive brightness and a whitening effect when viewed from the side.

[0003] Currently, LCD panels are designed to differentiate between H and L states for display by using the lower brightness of subpixels in the L state. This reduces the side-viewing brightness of the LCD panel and mitigates the deterioration of side-viewing angle characteristics. However, adding L-state pixels to the subpixels can create a noticeable pixelation effect in the displayed image, thus reducing the overall image quality.

[0004] Therefore, the aforementioned grid-like effect caused by improving the side viewing angle exists in existing LCD panels and urgently needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to provide a display method and display device to improve the technical problem of color shift in the display screen of existing tri-gate driving architecture display terminals.

[0006] This invention provides a display method applied to a display panel, the display panel comprising a plurality of pixel units, each pixel unit comprising a first sub-pixel, a second sub-pixel, and a third sub-pixel of different colors, the display method comprising:

[0007] Three initial grayscale values ​​are obtained for the first sub-pixel, the second sub-pixel, and the third sub-pixel, respectively. Each initial grayscale value corresponds to a target grayscale value. The target grayscale value includes a first target grayscale value and a second target grayscale value. The magnitude of the initial grayscale value is between the first target grayscale value and the second target grayscale value.

[0008] Based on the magnitude relationship of the three initial grayscale values ​​and the difference between at least two of the initial grayscale values, the target grayscale value closing ratio of at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel is determined, wherein the target grayscale value closing ratio is greater than 0 and less than or equal to 1.

[0009] Based on the target grayscale value off ratio, determine the number of corresponding first sub-pixels, second sub-pixels, or third sub-pixels that are displayed with the initial grayscale value, the number that are displayed with the target grayscale value, and / or adjust the size of the target grayscale value so that the display panel displays the image.

[0010] In some embodiments, the step of obtaining the three initial grayscale values ​​corresponding to the first sub-pixel, the second sub-pixel, and the third sub-pixel respectively includes:

[0011] Obtain the first original grayscale value of the first sub-pixel, the second original grayscale value of the second sub-pixel, and the third original grayscale value of the third sub-pixel in a plurality of pixel units within a preset area of ​​the display panel;

[0012] The initial grayscale value of the first sub-pixel is determined based on a plurality of first original grayscale values, the initial grayscale value of the second sub-pixel is determined based on a plurality of second original grayscale values, and the initial grayscale value of the third sub-pixel is determined based on a plurality of third original grayscale values.

[0013] In some embodiments, the step of determining the target grayscale value off ratio of at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel based on the magnitude relationship of the three initial grayscale values ​​and the difference between at least two of the initial grayscale values ​​includes:

[0014] Based on the relationship between the three initial grayscale values, determine the largest initial grayscale value and the smallest initial grayscale value, and determine the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the largest initial grayscale value as the first sub-pixel to be adjusted.

[0015] The target grayscale value off ratio of the first sub-pixel to be adjusted is determined based on the first difference between the maximum initial grayscale value and the minimum initial grayscale value.

[0016] In some embodiments, after determining the target grayscale value off ratio of the first sub-pixel to be adjusted based on the first difference between the maximum initial grayscale value and the minimum initial grayscale value, the step includes:

[0017] Determine whether the first difference is greater than the first preset difference;

[0018] If the first difference is greater than the first preset difference, then based on the first difference and the first preset difference, the target grayscale value off ratio of the first sub-pixel to be adjusted is increased, or the target grayscale value off ratio of the first sub-pixel to be adjusted is kept unchanged.

[0019] In some embodiments, after determining the target grayscale value off ratio of the first sub-pixel to be adjusted based on the first difference between the maximum initial grayscale value and the minimum initial grayscale value, the step includes:

[0020] Determine whether the first difference is less than or equal to the first preset difference;

[0021] If the first difference is less than or equal to the first preset difference, then the target grayscale value off ratio of the first sub-pixel to be adjusted is reduced according to the first difference and the first preset difference.

[0022] In some embodiments, the step of determining the largest initial grayscale value and the smallest initial grayscale value based on the magnitude relationship of the three initial grayscale values, and determining the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the largest initial grayscale value as the first sub-pixel to be adjusted, includes:

[0023] Based on the relationship between the three initial grayscale values, an intermediate initial grayscale value is determined that is between the maximum initial grayscale value and the minimum initial grayscale value, and the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the intermediate initial grayscale value is determined as the second sub-pixel to be adjusted.

[0024] The step of determining the target grayscale value off ratio of the first sub-pixel to be adjusted based on the first difference between the maximum initial grayscale value and the minimum initial grayscale value includes:

[0025] The target grayscale value off ratio of the second sub-pixel to be adjusted is determined based on at least one of the second difference between the maximum initial grayscale value and the intermediate initial grayscale value, and the third difference between the intermediate initial grayscale value and the minimum initial grayscale value.

[0026] In some embodiments, the step of determining the target grayscale value off ratio of the second sub-pixel to be adjusted based on the second difference between the maximum initial grayscale value and the intermediate initial grayscale value includes:

[0027] Determine whether the second difference is less than or equal to the second preset difference;

[0028] If the second difference is less than or equal to the second preset difference, then based on the second difference and the second preset difference, the difference between the target grayscale value off ratio of the second sub-pixel to be adjusted and the target grayscale value off ratio of the first sub-pixel to be adjusted is reduced.

[0029] In some embodiments, the step of determining the number of first sub-pixels, second sub-pixels, or third sub-pixels displayed at the initial grayscale value and the number displayed at the target grayscale value among the corresponding plurality of first sub-pixels, plurality of second sub-pixels, or plurality of third sub-pixels, so as to enable the display panel to display an image, includes:

[0030] Based on the target grayscale value off ratio of the first sub-pixel to be adjusted, the number of the first sub-pixels to be adjusted displayed at the initial grayscale value and the number of the first sub-pixels to be adjusted displayed at the target grayscale value are determined, and the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the minimum initial grayscale value is controlled to be displayed at the target grayscale value, so that the display panel displays the image, wherein the number of the first sub-pixels to be adjusted displayed at the initial grayscale value is positively correlated with the corresponding target grayscale value off ratio.

[0031] In some embodiments, the step of determining the number of first sub-pixels, second sub-pixels, or third sub-pixels displayed at the initial grayscale value and the number displayed at the target grayscale value among the corresponding plurality of first sub-pixels, plurality of second sub-pixels, or plurality of third sub-pixels, so as to enable the display panel to display an image, includes:

[0032] Based on the target grayscale value off ratio of the first sub-pixel to be adjusted, the size of the target grayscale value of the first sub-pixel to be adjusted is adjusted, and the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the minimum initial grayscale value is controlled to display with the target grayscale value, so that the display panel displays the image. The absolute value of the difference between the first target grayscale value and the second target grayscale value in the adjusted target grayscale value is negatively correlated with the corresponding target grayscale value off ratio.

[0033] In some embodiments, the step of adjusting the target grayscale value of the first sub-pixel to be adjusted according to the target grayscale value off ratio of the first sub-pixel to be adjusted includes:

[0034] According to the target grayscale value closing ratio of the first sub-pixel to be adjusted, at least one of the first target grayscale value and the second target grayscale value in the target grayscale value of the first sub-pixel to be adjusted is adjusted, wherein the two first target grayscale values ​​corresponding to the two first sub-pixels to be adjusted are equal or unequal, and the two corresponding second target grayscale values ​​are equal or unequal.

[0035] The present invention also provides a display device, comprising:

[0036] The display panel includes a plurality of pixel units as described above;

[0037] A controller is used to execute program instructions to implement the display method as described above.

[0038] This invention provides a display method and a display device. The method is based on obtaining three initial grayscale values ​​corresponding to three sub-pixels of different colors in a pixel unit. According to the magnitude relationship of the three initial grayscale values ​​and the difference between at least two of the initial grayscale values, a target grayscale value off ratio corresponding to at least one color sub-pixel is determined. The target grayscale value off ratio is greater than 0 and less than or equal to 1. Based on the target grayscale value off ratio, the number of corresponding multiple first sub-pixels, multiple second sub-pixels, or multiple third sub-pixels displayed with the initial grayscale value, the number displayed with the target grayscale value, and / or, the magnitude of the target grayscale value is adjusted so that the display panel displays an image. This can improve the side viewing angle characteristics of the display panel while reducing the risk of obvious grid-like appearance in the displayed image. Attached Figure Description

[0039] 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.

[0040] Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 9 These are several flowcharts illustrating the display method provided in the embodiments of the present invention.

[0041] Figure 2 , 5 This is a schematic diagram of the layout of the target grayscale value provided in an embodiment of the present invention.

[0042] Figure 8 This is a schematic diagram of the curve of the target grayscale value opening ratio and the first difference provided in the embodiment of the present invention.

[0043] Figure 10 This is a schematic diagram of the curve representing the absolute value of the difference between the target grayscale value opening ratio of Med and the target grayscale value opening ratio of Max, provided in an embodiment of the present invention. Detailed Implementation

[0044] 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.

[0045] 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 to the actual device and is not set as a limitation.

[0046] 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.

[0047] The present invention provides a display method applied to a display panel, the display panel including a plurality of pixel units, each pixel unit including a first sub-pixel, a second sub-pixel and a third sub-pixel of different colors, the method including but not limited to the following embodiments and combinations thereof.

[0048] In some embodiments, such as Figure 1 As shown, the display method may include, but is not limited to, the following steps and combinations thereof.

[0049] S1, obtain three initial grayscale values ​​corresponding to the first sub-pixel, the second sub-pixel and the third sub-pixel respectively, each initial grayscale value corresponds to a target grayscale value, the target grayscale value includes a first target grayscale value and a second target grayscale value, and the magnitude of the initial grayscale value is between the first target grayscale value and the second target grayscale value.

[0050] In this embodiment, the display panel may include, but is not limited to, at least one of a liquid crystal display panel, an organic self-emissive display panel, and an inorganic self-emissive display panel. In particular, for liquid crystal display panels, in order to improve transmittance and reduce the energy consumption of the backlight, vertical alignment technology is used to change the pixel architecture, resulting in a narrower viewing angle of the liquid crystal display panel and causing excessive brightness and a whitening effect when viewed from the side.

[0051] Specifically, the display panel may include multiple pixel units, and each pixel unit may include multiple sub-pixels of different colors. The first sub-pixel, the second sub-pixel, and the third sub-pixel can each emit light of their corresponding color. After mixing, the corresponding pixel unit presents a mixed light composed of multiple colors of light. Furthermore, the combination of the multiple lights emitted by multiple pixel units can present a corresponding image. In order to present each frame of the image, the sub-pixels in each pixel unit may have a corresponding unprocessed initial grayscale value, and each sub-pixel may be acted upon by an electrical signal such as voltage or current corresponding to the initial grayscale value to emit light of a corresponding brightness.

[0052] The issue of excessive brightness and a whitening appearance from a side-view perspective can be addressed by reducing the luminance of at least some sub-pixels. This can be illustrated by using an example where at least one target grayscale value includes a first target grayscale value smaller than the corresponding initial grayscale value and a second target grayscale value larger than the corresponding initial grayscale value. Compared to the original initial grayscale value of the sub-pixel, the first target grayscale value can be understood as a grayscale value used to reduce the brightness of the sub-pixel, and the second target grayscale value can be understood as a grayscale value used to increase the brightness of the sub-pixel. Furthermore, the first and second target grayscale values ​​can be two adjacent sub-pixels with the same color in two adjacent pixel units.

[0053] For ease of description, we can use the example where the first sub-pixel, second sub-pixel, and third sub-pixel are respectively the red sub-pixel, green sub-pixel, and blue sub-pixel. Figure 2 As shown, this example uses three initial grayscale values ​​R, G, and B all equal to 128. When the corresponding first target grayscale values ​​R1, G1, and B1 are all equal to 50, the corresponding three second target grayscale values ​​R2, G2, and B2 can all be set to 180. In the multiple pixel units 10, multiple red sub-pixels can be arranged consecutively, multiple green sub-pixels can be arranged consecutively, and multiple blue sub-pixels can be arranged consecutively. The target grayscale values ​​of consecutively arranged red sub-pixels can be alternately set to equal R1 and R2, the target grayscale values ​​of consecutively arranged green sub-pixels can be alternately set to equal G1 and G2, and the target grayscale values ​​of consecutively arranged blue sub-pixels can be alternately set to equal B1 and B2.

[0054] It should be noted that if some sub-pixels with reduced brightness and those without reduced brightness are distributed alternately, or if the difference in brightness between the two is significant, it will result in a noticeable grid-like or grainy appearance in the image.

[0055] In some embodiments, such as Figure 3 As shown, step S1 above may include, but is not limited to, the following steps and combinations thereof.

[0056] S101, obtain the first original grayscale value of the first sub-pixel, the second original grayscale value of the second sub-pixel, and the third original grayscale value of the third sub-pixel in a plurality of pixel units within a preset area of ​​the display panel.

[0057] Here, the position and size of the preset area are not limited. It is only required that there are sub-pixels in multiple pixel units within this area that have corresponding target grayscale values. For example, two sub-pixels with the same color in two pixel units that are close to each other can be displayed with the first target grayscale value and the corresponding second target grayscale value, respectively.

[0058] In essence, each of the multiple pixel units within the preset area has three sub-pixels with their own first original grayscale value, second original grayscale value, and third original grayscale value.

[0059] S102, determine the initial grayscale value of the first sub-pixel based on a plurality of first original grayscale values, determine the initial grayscale value of the second sub-pixel based on a plurality of second original grayscale values, and determine the initial grayscale value of the third sub-pixel based on a plurality of third original grayscale values.

[0060] Specifically, the initial grayscale value of the first sub-pixel in the preset area can be determined based on the average of multiple first original grayscale values ​​in the preset area or by weighting, the initial grayscale value of the second sub-pixel in the preset area can be determined based on the average of multiple second original grayscale values ​​in the preset area or by weighting, and the initial grayscale value of the third sub-pixel in the preset area can be determined based on the average of multiple third original grayscale values ​​in the preset area or by weighting.

[0061] Therefore, it can be understood that the three initial grayscale values ​​obtained in step S1 can reflect the overall situation of multiple first original grayscale values, multiple second original grayscale values, and multiple third original grayscale values ​​of three color sub-pixels in the preset area.

[0062] S2, based on the magnitude relationship of the three initial grayscale values ​​and the difference between at least two of the initial grayscale values, determine the target grayscale value closing ratio of at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel, wherein the target grayscale value closing ratio is greater than 0 and less than or equal to 1.

[0063] That is, in this embodiment, the target grayscale value off ratio of at least one color sub-pixel is determined by the magnitude relationship of three initial grayscale values ​​and the difference between at least two of them, and the sub-pixel with the target grayscale value off ratio is also determined accordingly.

[0064] S3, based on the target grayscale value off ratio, determine the number of corresponding first sub-pixels, second sub-pixels, or third sub-pixels that are displayed with the initial grayscale value, the number of corresponding third sub-pixels that are displayed with the target grayscale value, and / or adjust the size of the target grayscale value so that the display panel displays the image.

[0065] Understandably, multiple initial grayscale values ​​corresponding to multiple sub-pixels in each pixel unit can control the emission of multiple sub-pixels. In this embodiment, the target grayscale value off ratio is determined based on the size relationship of multiple initial grayscale values ​​and at least the difference between the two. The number of sub-pixels of the corresponding color that emit light using the initial grayscale value is determined according to the target grayscale value off ratio, and / or the target grayscale value of the corresponding color sub-pixel after adjustment is determined. This can improve the brightness of the side view caused by the color sub-pixel emitting light according to the original initial grayscale value, while also improving the grid or graininess of the image caused by a large reduction in the brightness of some sub-pixels or a large number of sub-pixels with low brightness.

[0066] Specifically, the target grayscale value off ratio needs to be greater than 0, meaning that at least part of the sub-pixels of the corresponding color need to emit light at the initial grayscale value, and / or the adjusted target grayscale value of the sub-pixels of the corresponding color needs to be closer to the initial grayscale value. If the target grayscale value off ratio is equal to 1, it means that all sub-pixels of the corresponding color emit light at the initial grayscale value.

[0067] In some embodiments, such as Figure 4 As shown, step S2 above may include, but is not limited to, the following steps and combinations thereof.

[0068] S201, based on the relationship between the three initial grayscale values, determine the largest initial grayscale value and the smallest initial grayscale value, and determine the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the largest initial grayscale value as the first sub-pixel to be adjusted.

[0069] Specifically, a side-viewing angle formula can be obtained, which defines the relationship between side-viewing optical parameters and multiple initial grayscale values. Taking the Lab model as an example, the Lab model has three-dimensional coordinates: L, a, b, where a and b represent color coordinates, L represents lightness, a represents the range from magenta to green, and b represents the range from yellow to blue. Therefore, the color of the origin at coordinates (0, 0) can be white. Furthermore, the relationship between a, b, and the three stimulus values ​​X, Y, Z in the CIE1931 XYZ color space is shown in the following formula:

[0070] a = 500{(X / Xn)} 1 / 3 -(Y / Yn) 1 / 3}

[0071] b = 200{(Y / Yn)} 1 / 3 -(Z / Zn) 1 / 3}

[0072] In this diagram, the stimulus value X is primarily provided by the emission of red sub-pixels, the stimulus value Y is primarily provided by the emission of green sub-pixels, and the stimulus value Z is primarily provided by the emission of blue sub-pixels. For ease of description, this example assumes that each pixel unit includes three sub-pixels: red, green, and blue. The initial grayscale values ​​corresponding to these three are referred to as R, G, and B. That is, the stimulus value X can be considered positively correlated with R, the stimulus value Y with G, and the stimulus value Z with B.

[0073] Specifically, dC (i.e., the side-view optical parameter in step S2) represents the difference between the brightness and color intensity of a sub-pixel when viewed from the side and when viewed directly. The relationship between dC and a and b can be expressed by the following formula:

[0074]

[0075] dC=C 侧视 / C 正视

[0076] In display panels employing vertical alignment technology, when viewed from the side, the color points in the Lab model tend to shift towards the origin, resulting in a whiter color. Consequently, values ​​a and b are smaller when viewed from the side, leading to a smaller dC. Therefore, assuming a and b are constant when viewed directly, the dC value can be increased when viewed from the side (i.e., C0). 侧视 This increases dC, thereby reducing the difference in brightness between the subpixel when viewed from the side and when viewed from the front.

[0077] Furthermore, based on the above side-view formula, the compensation type of pixel units within the preset area can be determined according to the magnitude relationship of multiple initial grayscale values.

[0078] Based on the above discussion of the side-view formula, the compensation type of the corresponding pixel unit can be determined according to the magnitude relationship of multiple initial grayscale values ​​(e.g., three initial grayscale values ​​R, G, and B) in the pixel unit. Generally speaking, it can include, but is not limited to, the following six magnitude relationships and the corresponding six compensation types:

[0079] (1) R>G≥B, that is, the initial X 侧视 >Y 侧视 >Z 侧视 The compensation type is X 侧视 ↑, meaning increase X 侧视 ;

[0080] (2) R≥B>G, that is, the initial X 侧视 >Z 侧视 >Y 侧视 The compensation type is X 侧视 ↑ and / or Z 侧视 ↑, meaning increase X 侧视 Z 侧视 At least one of them;

[0081] (3) G≥R>B, that is, the initial Y 侧视 >X 侧视 >Z 侧视 The compensation type is Y. 侧视 ↑, meaning increase Y 侧视 ;

[0082] (4) G>B≥R, that is, the initial Y 侧视 >Z 侧视 >X 侧视 The compensation type is Y. 侧视 ↑, meaning increase Y 侧视 ;

[0083] (5) B≥G>R, that is, the initial Z 侧视 >Y 侧视 >X 侧视 The compensation type is Z. 侧视 ↑, meaning increase Z 侧视 ;

[0084] (6) B>R≥G, that is, the initial Z 侧视 >X 侧视 >Y 侧视 The compensation type is X 侧视 ↑ and / or Z 侧视 ↑, meaning increase Y 侧视 Z 侧视 At least one of them;

[0085] It should be noted that this embodiment takes X into consideration. 侧视 Y侧视 Z 侧视 Decreasing any one of these factors will reduce the brightness value of the corresponding sub-pixel when viewed from the side, resulting in a significant brightness difference with surrounding sub-pixels whose brightness has not decreased. This will increase the appearance of a grid or graininess. Therefore, the above six compensation types only consider how to increase X. 侧视 Y 侧视 Z 侧视 At least one of them.

[0086] In type (1), although Z 侧视 At the very least, consider increasing Y. 侧视 However, X 侧视 >Y 侧视 Therefore, this will result in a being relatively small, so ultimately we will consider increasing X. 侧视 In type (2), due to Y 侧视 Minimum, therefore increase X 侧视 Z 侧视 Both are acceptable; in type (3), Y 侧视 >X 侧视 And Y 侧视 >Z 侧视 Therefore, increasing Y can be considered. 侧视 In type (4), Y is also... 侧视 Since it is the largest, increasing Y can be considered. 侧视 In type (5), although X 侧视 At the very least, consider increasing Y. 侧视 However, Z 侧视 >Y 侧视 Therefore, b will be relatively small, so we ultimately consider increasing Z. 侧视 In type (6), Y is also... 侧视 Minimum, therefore increase X 侧视 Z 侧视 Both are acceptable.

[0087] Therefore, the compensation type of a pixel unit can be determined by comparing the magnitude relationship of multiple initial grayscale values, including but not limited to the above six compensation types.

[0088] Furthermore, based on the aforementioned compensation type and the three initial grayscale values, the closing ratio of each target grayscale value can be determined. As discussed above, the corresponding compensation type can teach how to increase X. 侧视 Y 侧视 Z 侧视 At least one of them can improve the corresponding C 侧视 Therefore, the compensation type can be used to determine the compensation for X. 侧视 Y 侧视 Z 侧视The processing method, that is, the processing method of the three initial grayscale values ​​R, G, and B, is further combined with the specific values ​​of the three initial grayscale values ​​R, G, and B to determine the processing degree of the above processing method, thereby determining the target grayscale value closing ratio of at least one color sub-pixel.

[0089] In summary, it can be understood that, based on the relationship between the three initial grayscale values, the largest initial grayscale value and its corresponding sub-pixel are determined as the first sub-pixel to be adjusted (that is, the sub-pixel of the color corresponding to the stimulus value to be added in each of the above compensation types).

[0090] S202, determine the target grayscale value off ratio of the first sub-pixel to be adjusted based on the first difference between the maximum initial grayscale value and the minimum initial grayscale value.

[0091] As discussed above, the compensation type can be determined by the relationship between the three initial grayscale values, thereby determining the first sub-pixel to be adjusted. Furthermore, based on the first difference, the target grayscale value closing ratio of the first sub-pixel to be adjusted (corresponding to the maximum initial grayscale value mentioned above) can be determined at least.

[0092] Among them, the first difference can represent the maximum difference of the three initial gray levels. And after the analysis of the above six compensation types, it can be seen that no matter what the relationship between the three initial gray levels is, the corresponding target gray level off ratio can be set for the sub-pixel corresponding to the largest initial gray level to improve the grid or graininess caused by the excessive target gray level on ratio of the sub-pixel of that color.

[0093] In some embodiments, step S3 may include, but is not limited to, the following steps: determining the number of first sub-pixels to be adjusted displayed at the initial grayscale value and the number of first sub-pixels to be adjusted displayed at the target grayscale value according to the target grayscale value off ratio of the first sub-pixel to be adjusted; and controlling the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the minimum initial grayscale value to be displayed at the target grayscale value, so that the display panel displays an image, wherein the number of first sub-pixels to be adjusted displayed at the initial grayscale value is positively correlated with the corresponding target grayscale value off ratio.

[0094] Understandably, the larger the target grayscale value is turned off, the fewer first-adjustable sub-pixels will be displayed using the target grayscale value, and the more first-adjustable sub-pixels will be displayed using the initial grayscale value; and vice versa.

[0095] In some embodiments, the above step S3 may include, but is not limited to, the following steps: adjusting the magnitude of the target gray level value of the first sub-pixel to be adjusted according to the target gray level value turn-off ratio of the first sub-pixel to be adjusted, and controlling the first sub-pixel, the second sub-pixel or the third sub-pixel corresponding to the minimum initial gray level value to display at the target gray level value, so that the display panel displays a picture, wherein the absolute value of the difference between the first target gray level value and the second target gray level value in the adjusted target gray level value is negatively correlated with the corresponding target gray level value turn-off ratio.

[0096] It can be understood that the larger the target gray level value turn-off ratio is, the smaller the difference between the adjusted target gray level value and the initial gray level value of the first sub-pixel to be adjusted is. It can be considered that the first target gray level value and the second target gray level value before adjustment are symmetric about the initial gray level value. After adjusting at least one of them towards the direction close to the initial gray level value, the difference between the adjusted two can also be made smaller; vice versa.

[0097] For ease of description, refer to Figure 5 As shown, the following definitions can be made in the present invention: when the target gray level value turn-off ratios corresponding to all sub-pixels of all pixel units 10 are all equal to 0, it means that the gray level values of continuously arranged red sub-pixels are alternately set to be equal to R01 (its corresponding first target gray level value), R02 (its corresponding second target gray level value), R01 < R02, and the corresponding initial gray level value is between R01 and R02. The gray level values of continuously arranged green sub-pixels are alternately set to be equal to G01 (its corresponding first target gray level value), G02 (its corresponding second target gray level value), G01 < G02, and the corresponding initial gray level value is between G01 and G02. The gray level values of continuously arranged blue sub-pixels are alternately set to be equal to B01 (its corresponding first target gray level value), B02 (its corresponding second target gray level value), B01 < B02, and the corresponding initial gray level value is between B01 and B02.

[0098] Based on the above definition, taking the red sub-pixel as the first sub-pixel to be adjusted as an example: if the target gray level value turn-off ratio is larger, it indicates that the adjusted target gray level value of the red sub-pixel is closer to the initial gray level value (otherwise closer to the corresponding R01), and / or the number of red sub-pixels displaying at R01 is more (otherwise less); the green sub-pixels and blue sub-pixels are set in the same way.

[0099] In some embodiments, as Figure 6 shown, the above step S201 may include, but is not limited to, the following steps.

[0100] S2011, based on the size relationship of the three initial grayscale values, determine an intermediate initial grayscale value that is between the maximum initial grayscale value and the minimum initial grayscale value, and determine the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the intermediate initial grayscale value as the second sub-pixel to be adjusted.

[0101] Specifically, this embodiment also considers adjusting the target grayscale value turn-off ratio of the sub-pixels corresponding to the color of the intermediate initial grayscale value.

[0102] S2012, determine the target grayscale value off ratio of the second sub-pixel to be adjusted based on at least one of the second difference between the maximum initial grayscale value and the intermediate initial grayscale value, and the third difference between the intermediate initial grayscale value and the minimum initial grayscale value.

[0103] This explanation is based on the above six size relationships and the corresponding six compensation types:

[0104] (1) R>G≥B, that is, the initial X 侧视 >Y 侧视 >Z 侧视 Because X needs to be increased 侧视 If the value of the first target grayscale value (which is less than the initial grayscale value) of the red sub-pixel needs to be increased (to get closer to the corresponding initial grayscale value), and / or the number of red sub-pixels displayed with the first target grayscale value needs to be reduced, that is, the target grayscale value off ratio (corresponding to R) needs to be greater than 0. The target grayscale value off ratio can be determined based on the first difference (RB). The other two color sub-pixels do not need to have the target grayscale value off ratio set, that is, the two corresponding first target grayscale values ​​are G01 and B01 respectively.

[0105] (2) R≥B>G, that is, the initial X 侧视 >Z 侧视 >Y 侧视 Because X needs to be increased 侧视 Z 侧视 At least one of them, taking both as an example, means that the target grayscale value closing ratio (corresponding to R and B) of both must be greater than 0. The target grayscale value closing ratio of both can be determined according to the first difference (RG) and the third difference (BG) respectively. The other color sub-pixel does not need to set the target grayscale value closing ratio, that is, the corresponding first target grayscale value is G01.

[0106] (3) G≥R>B, that is, the initial Y 侧视 >X 侧视 >Z 侧视 Because Y needs to be increased 侧视That is, the target grayscale value closing ratio (corresponding to G) needs to be greater than 0. The target grayscale value closing ratio can be determined based on the first difference (GB). The other two color sub-pixels do not need to set the target grayscale value closing ratio, that is, the corresponding two first target grayscale values ​​are R01 and B01 respectively.

[0107] (4) G>B≥R, that is, the initial Y 侧视 >Z 侧视 >X 侧视 Because Y needs to be increased 侧视 That is, the target grayscale value closing ratio (corresponding to G) needs to be greater than 0. The target grayscale value closing ratio can be determined based on the first difference (GR). The other two color sub-pixels do not need to set the target grayscale value closing ratio, that is, the corresponding two first target grayscale values ​​are B01 and R01 respectively.

[0108] (5) B≥G>R, that is, the initial Z 侧视 >Y 侧视 >X 侧视 Because Z needs to be increased 侧视 That is, the target grayscale value closing ratio (corresponding to B) needs to be greater than 0. The target grayscale value closing ratio can be determined based on the first difference (BR). The other two color sub-pixels do not need to set the target grayscale value closing ratio, that is, the corresponding two first target grayscale values ​​are G01 and R01 respectively.

[0109] (6) B>R≥G, that is, the initial Z 侧视 >X 侧视 >Y 侧视 Because Y needs to be increased 侧视 Z 侧视 At least one of them (taking both as an example) must be greater than 0, that is, the target grayscale value closing ratio (corresponding to B and R) of both must be greater than 0. The target grayscale value closing ratio of both can be determined according to the first difference (BG) and the third difference (RG) respectively. The other color sub-pixel does not need to set the target grayscale value closing ratio, that is, the corresponding first target grayscale value is G01.

[0110] The above six compensation methods (1) to (6) correspond to the situation in step S2012 where "the target grayscale value off ratio of the second sub-pixel to be adjusted is determined according to the third difference". Of course, when B=R=G, the three sub-pixels can be set with the same three target grayscale value off ratios, or none of them can be set with target grayscale value off ratios (i.e., the three target grayscale value on ratios are all 1).

[0111] In some embodiments, such as Figure 7 As shown, the steps following step S202 may include, but are not limited to, the following steps:

[0112] S203, determine whether the first difference is greater than the first preset difference.

[0113] The first preset difference can be set according to the specifications of the display panel, user needs, etc. The point here is to emphasize that there is a process for measuring the magnitude of the first difference.

[0114] If the first difference is greater than the first preset difference, then execute:

[0115] S204, based on the first difference and the first preset difference, increase the target grayscale value off ratio of the first sub-pixel to be adjusted, or keep the target grayscale value off ratio of the first sub-pixel to be adjusted unchanged.

[0116] If the first difference is less than or equal to the first preset difference, then execute:

[0117] S205, based on the first difference and the first preset difference, reduce the target grayscale value off ratio of the first sub-pixel to be adjusted.

[0118] Based on the above discussion of the six compensation methods (1) to (6), it can be seen that they are all based on the premise that the color sub-pixel corresponding to the minimum initial gray level value does not need to set the target gray level value off ratio, that is, the color sub-pixel is displayed with the target gray level value, so as to improve the phenomenon of excessive brightness and whiteness of the side viewing angle of the display panel. Under this premise, the following discussion can be carried out:

[0119] like Figure 8 As shown, Max and Min are the maximum and minimum initial grayscale values ​​among the three initial grayscale values, respectively. If the first difference (Max-Min) is smaller, it means that the three initial grayscale values ​​are relatively close (e.g., 129, 128, and 127 respectively). That is, the color originally presented by the pixel unit under the action of the three initial grayscale values ​​can be close to gray. Therefore, the grayscale values ​​displayed by the three color sub-pixels need to maintain a small difference to reduce the risk of color shift in the actual display. Since the target grayscale value opening ratio of Min is 1, the target grayscale value opening ratio P1 of Max needs to be set to a large value (that is, the corresponding target grayscale value closing ratio needs to be set to a small value) so that the difference between the two actual grayscale values ​​of the two sub-pixels corresponding to Max and Min is small. Therefore, as discussed in step S205, at this time, the target grayscale value closing ratio of the first sub-pixel to be adjusted calculated earlier can be reduced to obtain a smaller target grayscale value of the first sub-pixel to be adjusted.

[0120] If the first difference (Max-Min) is larger, it means that the pixel unit is already biased towards the color of the sub-pixel corresponding to Max (i.e., the first sub-pixel to be adjusted) under the influence of the three initial grayscale values. Therefore, even if the target grayscale value opening ratio P1 of the first sub-pixel to be adjusted is set to a small value (i.e., the corresponding target grayscale value closing ratio is set to a large value), it will not worsen the color cast in order to improve the grid or graininess of the image. Therefore, as discussed in step S204, the target grayscale value closing ratio of the first sub-pixel to be adjusted calculated earlier can be maintained, or it can even be further increased to obtain a larger target grayscale value of the first sub-pixel to be adjusted in order to further improve the graininess of the image.

[0121] It should be noted that when the first difference is greater than the first preset difference, the size of the second difference also determines whether the pixel unit is biased towards one of the colors or a mixture of two colors under the influence of the three initial grayscale values. Therefore, as discussed in steps S2011 to S2012 above, there can also be a setting for the second sub-pixel to be adjusted and its target grayscale value off ratio, thereby reducing the risk of a decrease in the color accuracy of the image in the later stage.

[0122] Unlike the six compensation methods mentioned above (1) to (6), based on the six size relationships and the corresponding six compensation types, the determination method for the closing ratio of multiple target grayscale values ​​can also be as follows:

[0123] (7) R>G≥B, that is, the initial X 侧视 >Y 侧视 >Z 侧视 Increasing X 侧视 Based on this, Y can also be added accordingly. 侧视 That is, the target grayscale value closing ratios (corresponding to R and G) of both need to be greater than 0. The target grayscale value closing ratios of both can be determined according to the first difference (RB) and the second difference (RG) respectively. The other color sub-pixel does not need to set the target grayscale value closing ratio, that is, the corresponding first target grayscale value is B01.

[0124] (8) R≥B>G, that is, the initial X 侧视 >Z 侧视 >Y 侧视 That is, increase X 侧视 Z 侧视 At least one of them (taking both as an example) must be greater than 0, that is, the target grayscale value closing ratio (corresponding to R and B) of both must be greater than 0. The target grayscale value closing ratio of both can be determined according to the first difference (RG) and the second difference (RB) respectively. The other color sub-pixel does not need to set the target grayscale value closing ratio, that is, the corresponding first target grayscale value is G01.

[0125] (9) G≥R>B, that is, the initial Y 侧视 >X 侧视 >Z 侧视 In increasing Y 侧视 Based on this, X can also be added accordingly. 侧视 That is, the target grayscale value closing ratio (corresponding to G and R) of both need to be greater than 0. The target grayscale value closing ratio of both can be determined according to the first difference (GB) and the second difference (GR) respectively. The other color sub-pixel does not need to set the target grayscale value closing ratio, that is, the corresponding first target grayscale value is B01.

[0126] (10) G>B≥R, that is, the initial Y 侧视 >Z 侧视 >X 侧视 In increasing Y 侧视 Based on this, Z can also be added accordingly. 侧视 The target grayscale value closing ratios (corresponding to G and B) of both need to be greater than 0. The target grayscale value closing ratios of both can be determined according to the first difference (GR) and the second difference (GB) respectively. The target grayscale value closing ratio can be determined according to the second difference (GR). The other color sub-pixel does not need to set the target grayscale value closing ratio, that is, the corresponding first target grayscale value is R01.

[0127] (11) B≥G>R, that is, the initial Z 侧视 >Y 侧视 >X 侧视 Increasing Z 侧视 Based on this, Y can also be added accordingly. 侧视 That is, the target grayscale value closing ratios (corresponding to B and G) of both need to be greater than 0. The target grayscale value closing ratios of both can be determined according to the first difference (BR) and the second difference (BG). The other color sub-pixel does not need to set the target grayscale value closing ratio, that is, the corresponding first target grayscale value is R01.

[0128] (12) B>R≥G, that is, the initial Z 侧视 >X 侧视 >Y 侧视 That is, increase Y 侧视 Z 侧视 At least one of them, taking both as an example, means that the target grayscale value closing ratio (corresponding to B and R) of both must be greater than 0. The target grayscale value closing ratio of both can be determined according to the first difference (BG) and the second difference (BR) respectively. The other color sub-pixel does not need to set the target grayscale value closing ratio, that is, the corresponding first target grayscale value is R01.

[0129] The above six compensation methods (7) to (12) correspond to the situation in step S2012 where “the target grayscale value closing ratio of the second sub-pixel to be adjusted is determined according to the third difference or the second difference”.

[0130] In some embodiments, such as Figure 9 As shown, the step S2012, "determining the target grayscale value off ratio of the second sub-pixel to be adjusted based on the third difference or the second difference," may include, but is not limited to, the following steps:

[0131] S20121, determine whether the second difference is less than or equal to the second preset difference.

[0132] The reference basis for setting the second preset difference is the same as that for setting the first preset difference.

[0133] If the second difference is less than or equal to the second preset difference, then execute:

[0134] S20122, based on the second difference and the second preset difference, reduce the difference between the target grayscale value off ratio of the second sub-pixel to be adjusted and the target grayscale value off ratio of the first sub-pixel to be adjusted.

[0135] If the second difference is greater than the second preset difference, then execute:

[0136] S20123, based on the second difference and the second preset difference, increase the difference between the target grayscale value off ratio of the second sub-pixel to be adjusted and the target grayscale value off ratio of the first sub-pixel to be adjusted, or keep the target grayscale value off ratio of the second sub-pixel to be adjusted and the target grayscale value off ratio of the first sub-pixel to be adjusted unchanged.

[0137] Similarly, based on the above discussion of the six compensation methods (7) to (12), it can be seen that they are all based on the premise that the color sub-pixel corresponding to the minimum initial gray level value does not need to set the target gray level value off ratio, that is, the color sub-pixel is displayed with the target gray level value, so as to improve the phenomenon of excessive brightness and whiteness of the side viewing angle of the display panel. Under this premise, the following discussion can be carried out:

[0138] like Figure 10As shown, Max and Med are the maximum and middle initial grayscale values ​​among the three initial grayscale values, respectively. If we consider the second difference (Max-Med) to be smaller, it means that the theoretical luminous brightness of the two color sub-pixels corresponding to Max and Med is similar. That is, the color originally presented by the pixel unit under the action of the three initial grayscale values ​​is close to the color mixing of the two colors. Therefore, the grayscale values ​​displayed by the two color sub-pixels need to maintain a small difference to reduce the risk of actual color shift (the color is more biased towards one of the two). Since the target grayscale value opening ratio of Min is 1, the target grayscale value opening ratio of Med needs to be set as close as possible to the target grayscale value opening ratio of Max. P2 can be understood as the absolute value of the difference between the target grayscale value opening ratio of Med and the target grayscale value opening ratio of Max. Therefore, as discussed in step S20122, the difference between the target grayscale value closing ratio of the second sub-pixel to be adjusted and the target grayscale value closing ratio of the first sub-pixel to be adjusted, which were calculated earlier, can be reduced.

[0139] If the second difference (Max-Med) is larger, it means that the theoretical luminous brightness difference between the two color sub-pixels corresponding to Max and Med is larger. That is, the color originally presented by the pixel unit under the effect of the three initial gray levels is biased towards the color of the sub-pixel corresponding to Max. Since the target gray level opening ratio of Min is 1, even if the absolute value P2 of the difference between the target gray level opening ratio of Med and the target gray level opening ratio of Max is set to be large, it will not worsen the color cast in order to improve the grid or graininess of the image. Therefore, as discussed in step S20123, the target gray level closing ratio of the second sub-pixel to be adjusted and the target gray level closing ratio of the first sub-pixel to be adjusted can be kept unchanged, or the difference between the two can be further increased to further improve the graininess of the image.

[0140] The present invention also provides a display device, comprising: a display panel including a plurality of pixel units as described above; and a controller for executing program instructions to implement the display method as described above.

[0141] This invention provides a display method and a display device. The method is based on obtaining three initial grayscale values ​​corresponding to three sub-pixels of different colors in a pixel unit. According to the magnitude relationship of the three initial grayscale values ​​and the difference between at least two of the initial grayscale values, a target grayscale value off ratio corresponding to at least one color sub-pixel is determined. The target grayscale value off ratio is greater than 0 and less than or equal to 1. Based on the target grayscale value off ratio, the number of corresponding multiple first sub-pixels, multiple second sub-pixels, or multiple third sub-pixels displayed with the initial grayscale value, the number displayed with the target grayscale value, and / or, the magnitude of the target grayscale value is adjusted so that the display panel displays an image. This can improve the side viewing angle characteristics of the display panel while reducing the risk of obvious grid-like appearance in the displayed image.

[0142] The display method and display device provided in the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is 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 display method, characterized in that, Applied to a display panel, the display panel comprising a plurality of pixel units, each pixel unit comprising a first sub-pixel, a second sub-pixel, and a third sub-pixel of different colors, the display method comprising: Three initial grayscale values ​​are obtained for the first sub-pixel, the second sub-pixel, and the third sub-pixel, respectively. Each initial grayscale value corresponds to a target grayscale value. The target grayscale value includes a first target grayscale value and a second target grayscale value. The magnitude of the initial grayscale value is between the first target grayscale value and the second target grayscale value. Based on the relationship between the three initial grayscale values, determine the maximum initial grayscale value with the largest value and the minimum initial grayscale value with the smallest value, and determine the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the maximum initial grayscale value as the first sub-pixel to be adjusted. Based on the first difference between the maximum initial grayscale value and the minimum initial grayscale value, the target grayscale value closing ratio of the first sub-pixel to be adjusted is determined, wherein the target grayscale value closing ratio is greater than 0 and less than or equal to 1; the first difference is positively correlated with the target grayscale value closing ratio. Based on the target grayscale value off ratio, determine the number of first sub-pixels to be adjusted that are displayed with the initial grayscale value, the number of first sub-pixels to be adjusted that are displayed with the target grayscale value, and / or adjust the size of the target grayscale value of the first sub-pixels to be adjusted so that the display panel displays the image; The number of the first sub-pixels to be adjusted displayed with the initial grayscale value is positively correlated with the corresponding target grayscale value off ratio; the absolute value of the difference between the first target grayscale value and the second target grayscale value in the adjusted target grayscale value is negatively correlated with the corresponding target grayscale value off ratio.

2. The display method as described in claim 1, characterized in that, The step of obtaining the three initial grayscale values ​​corresponding to the first sub-pixel, the second sub-pixel, and the third sub-pixel respectively includes: Obtain the first original grayscale value of the first sub-pixel, the second original grayscale value of the second sub-pixel, and the third original grayscale value of the third sub-pixel in a plurality of pixel units within a preset area of ​​the display panel; The initial grayscale value of the first sub-pixel is determined based on a plurality of first original grayscale values, the initial grayscale value of the second sub-pixel is determined based on a plurality of second original grayscale values, and the initial grayscale value of the third sub-pixel is determined based on a plurality of third original grayscale values.

3. The display method as described in claim 1, characterized in that, After determining the target grayscale value off ratio of the first sub-pixel to be adjusted based on the first difference between the maximum initial grayscale value and the minimum initial grayscale value, the method includes: Determine whether the first difference is greater than the first preset difference; If the first difference is greater than the first preset difference, then based on the first difference and the first preset difference, the target grayscale value off ratio of the first sub-pixel to be adjusted is increased, or the target grayscale value off ratio of the first sub-pixel to be adjusted is kept unchanged.

4. The display method as described in claim 1, characterized in that, After determining the target grayscale value off ratio of the first sub-pixel to be adjusted based on the first difference between the maximum initial grayscale value and the minimum initial grayscale value, the method includes: Determine whether the first difference is less than or equal to the first preset difference; If the first difference is less than or equal to the first preset difference, then the target grayscale value off ratio of the first sub-pixel to be adjusted is reduced according to the first difference and the first preset difference.

5. The display method as described in claim 1, characterized in that, The step of determining the largest initial grayscale value and the smallest initial grayscale value based on the relationship between the three initial grayscale values, and determining the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the largest initial grayscale value as the first sub-pixel to be adjusted, includes: Based on the relationship between the three initial grayscale values, an intermediate initial grayscale value is determined that is between the maximum initial grayscale value and the minimum initial grayscale value, and the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the intermediate initial grayscale value is determined as the second sub-pixel to be adjusted. The step of determining the target grayscale value off ratio of the first sub-pixel to be adjusted based on the first difference between the maximum initial grayscale value and the minimum initial grayscale value includes: The target grayscale value off ratio of the second sub-pixel to be adjusted is determined based on at least one of the second difference between the maximum initial grayscale value and the intermediate initial grayscale value, and the third difference between the intermediate initial grayscale value and the minimum initial grayscale value.

6. The display method as described in claim 5, characterized in that, The step of determining the target grayscale value off ratio of the second sub-pixel to be adjusted based on the second difference between the maximum initial grayscale value and the intermediate initial grayscale value includes: Determine whether the second difference is less than or equal to the second preset difference; If the second difference is less than or equal to the second preset difference, then based on the second difference and the second preset difference, the difference between the target grayscale value off ratio of the second sub-pixel to be adjusted and the target grayscale value off ratio of the first sub-pixel to be adjusted is reduced.

7. The display method according to any one of claims 1, 3 to 6, characterized in that, Based on the target grayscale value off ratio of the first sub-pixel to be adjusted, the number of the first sub-pixels to be adjusted displayed at the initial grayscale value and the number of the first sub-pixels to be adjusted displayed at the target grayscale value are determined, and the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the minimum initial grayscale value is controlled to be displayed at the target grayscale value, so that the display panel displays the image, wherein the number of the first sub-pixels to be adjusted displayed at the initial grayscale value is positively correlated with the corresponding target grayscale value off ratio.

8. The display method according to any one of claims 1, 3 to 6, characterized in that, Based on the target grayscale value off ratio of the first sub-pixel to be adjusted, the size of the target grayscale value of the first sub-pixel to be adjusted is adjusted, and the first sub-pixel, the second sub-pixel, or the third sub-pixel corresponding to the minimum initial grayscale value is controlled to display with the target grayscale value, so that the display panel displays the image. The absolute value of the difference between the first target grayscale value and the second target grayscale value in the adjusted target grayscale value is negatively correlated with the corresponding target grayscale value off ratio.

9. The display method as described in claim 8, characterized in that, The step of adjusting the target grayscale value of the first sub-pixel to be adjusted according to the target grayscale value off ratio of the first sub-pixel to be adjusted includes: According to the target grayscale value closing ratio of the first sub-pixel to be adjusted, at least one of the first target grayscale value and the second target grayscale value in the target grayscale value of the first sub-pixel to be adjusted is adjusted, wherein the two first target grayscale values ​​corresponding to the two first sub-pixels to be adjusted are equal or unequal, and the two corresponding second target grayscale values ​​are equal or unequal.

10. A display device, characterized in that, include: The display panel includes a plurality of pixel units as described in any one of claims 1 to 9; A controller for executing program instructions to implement the display method as described in any one of claims 1 to 9.

Images