CN111258135A - Color cast compensation method and device and display equipment - Google Patents

Abstract

The invention provides a color shift compensation method, device and display device, belonging to the technical field of display. A color shift compensation method is applied to a display device comprising a stacked first display panel and a second display panel, the first display panel is located on the light-emitting side of the second display panel, and the second pixel of the second display panel is connected to at least one first display panel. The first pixel correspondence of the display panel includes: when a plurality of first pixels of the first display panel display white to form a white line, determining a pixel to be compensated for the second display panel, and the pixel to be compensated is a pixel adjacent to the target area, The target area is an area composed of second pixels corresponding to a plurality of first pixels displaying white; the grayscale value of the pixel to be compensated is adjusted according to the maximum grayscale value in the neighborhood of the pixel to be compensated, and the neighborhood of the pixel to be compensated is determined by the pixel to be compensated. A pixel and a plurality of second pixels around it. The technical solution of the present invention can improve the color shift problem.

Description

Color shift compensation method, device and display device

technical field

The present invention relates to the field of display technology, in particular to a color shift compensation method, device and display device.

Background technique

At present, the contrast ratio of liquid crystal display devices is usually between 600:1 and 1500:1. In order to improve the contrast ratio of liquid crystal display devices, two liquid crystal display screens can be superimposed and displayed, and the contrast ratio can be as high as 200000:1, which is close to OLED (with Among them, screen A on the light-emitting side displays RGB color signals, and screen B on the non-light-emitting side displays grayscale images. Screen A and screen B are closely attached up and down, up to 200 The 10,000-pixel partition enables ultra-high-precision dynamic backlight control.

When a single-pixel white straight line or oblique line is displayed in a dark background, if the viewing angle of the viewer changes, the white bright line displayed on the A screen will be colored, which is called color cast.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a color shift compensation method, device and display device, which can improve the color shift problem.

In order to solve the above-mentioned technical problems, the embodiments of the present invention provide the following technical solutions:

In one aspect, a color shift compensation method is provided, which is applied to a display device including a first display panel and a second display panel that are stacked in layers, the first display panel is located on the light-emitting side of the second display panel, and the first display panel is located on the light-emitting side of the second display panel. A display panel is a color display panel, the second display panel is a black and white display panel, a second pixel of the second display panel corresponds to at least one first pixel of the first display panel, and the method includes:

When a plurality of first pixels of the first display panel display white to form a white line, determine the pixels to be compensated for the second display panel, and the pixels to be compensated are pixels adjacent to a target area, and the target area is an area composed of second pixels corresponding to a plurality of the first pixels displaying white;

The grayscale value of the pixel to be compensated is adjusted according to the maximum grayscale value in the neighborhood of the pixel to be compensated, and the neighborhood of the pixel to be compensated is composed of the pixel to be compensated and a plurality of second pixels around it.

In some embodiments, the grayscale values of the plurality of first pixels that display white are all greater than 100.

In some embodiments, the adjusting the grayscale value of the pixel to be compensated according to the maximum grayscale value in the neighborhood of the pixel to be compensated includes:

When the extension direction of the target area is the first direction and the width in the second direction is 1 or 2 second pixels, the grayscale value of the pixel to be compensated is adjusted to be adjacent to the pixel to be compensated the maximum grayscale value in the domain, the first direction is perpendicular to the second direction;

When the extending direction of the target area is the second direction and the width in the first direction is 1 or 2 second pixels, the grayscale value of the pixel to be compensated is adjusted to be adjacent to the pixel to be compensated The maximum grayscale value within the domain.

In some embodiments, the adjusting the grayscale value of the pixel to be compensated according to the maximum grayscale value in the neighborhood of the pixel to be compensated includes:

When the extension direction of the target area is the first direction and the width in the second direction is greater than 2 second pixels, the grayscale value of the pixel to be compensated is adjusted to the maximum value in the neighborhood of the pixel to be compensated half of the grayscale value, the first direction is perpendicular to the second direction;

When the extending direction of the target area is the second direction and the width in the first direction is greater than 2 second pixels, the grayscale value of the pixel to be compensated is adjusted to the maximum value in the neighborhood of the pixel to be compensated half of the grayscale value.

In some embodiments, the size of the neighborhood is 3*3 pixels or 5*5 pixels.

An embodiment of the present invention further provides a color shift compensation device, which is applied to a display device including a first display panel and a second display panel that are stacked and arranged, the first display panel is located on the light-emitting side of the second display panel , the first display panel is a color display panel, the second display panel is a black and white display panel, the second pixel of the second display panel corresponds to at least one first pixel of the first display panel, the The device includes:

A determination module, configured to determine the pixels to be compensated for the second display panel when a plurality of first pixels of the first display panel display white to form a white line, and the pixels to be compensated are pixels adjacent to the target area , the target area is an area composed of second pixels corresponding to a plurality of the first pixels displaying white;

The processing module is configured to adjust the grayscale value of the pixel to be compensated according to the maximum grayscale value in the neighborhood of the pixel to be compensated, and the neighborhood of the pixel to be compensated is determined by the pixel to be compensated and a plurality of th composed of two pixels.

In some embodiments, the processing module is specifically configured to process the pixel to be compensated when the extension direction of the target area is the first direction and the width in the second direction is 1 or 2 second pixels. The grayscale value of the target area is adjusted to the maximum grayscale value in the neighborhood of the pixel to be compensated; when the extension direction of the target area is the second direction, and the width in the first direction is 1 or 2 second pixels , the grayscale value of the pixel to be compensated is adjusted to the maximum grayscale value in the neighborhood of the pixel to be compensated, and the first direction is perpendicular to the second direction.

In some embodiments, the processing module is specifically configured to change the grayscale of the pixel to be compensated when the extension direction of the target area is the first direction and the width in the second direction is greater than 2 second pixels. The value is adjusted to half of the maximum grayscale value in the neighborhood of the pixel to be compensated; when the extension direction of the target area is the second direction, and the width in the first direction is greater than 2 second pixels, the The grayscale value of the pixel to be compensated is adjusted to be half of the maximum grayscale value in the neighborhood of the pixel to be compensated, and the first direction is perpendicular to the second direction.

An embodiment of the present invention also provides a display device, comprising: a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the steps of the above-mentioned color shift compensation method are implemented .

Embodiments of the present invention also provide a computer-readable medium storing a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned color shift compensation method are implemented.

Embodiments of the present invention have the following beneficial effects:

In the above solution, when a plurality of first pixels of the first display panel display white to form a white line, the pixels to be compensated for the second display panel are determined, and the pixels to be compensated are pixels adjacent to the target area, and the target area is adjacent to the display white. In the area composed of the second pixels corresponding to the plurality of first pixels, the grayscale value of the pixel to be compensated is adjusted according to the maximum grayscale value in the neighborhood of the pixel to be compensated, and the neighborhood of the pixel to be compensated consists of the pixel to be compensated and the surrounding pixels. composed of a second pixel. Through the technical solution of the present invention, the bright area of the second display panel can be appropriately expanded, so that when the viewing angle of the viewer changes, the bright area of the second display panel can still effectively correspond to the white lines on the first display panel, which can effectively solve the problem. Color cast when displaying white lines in dark scenes.

Description of drawings

1 is a schematic diagram of the composition of a related art display device;

2 is a schematic diagram of a bright area of a first display panel corresponding to a bright area of a second display panel;

Fig. 3 is the schematic diagram that the color cast appears;

4 is a schematic flowchart of a color shift compensation method according to an embodiment of the present invention;

5 is a structural block diagram of a color shift compensation device according to an embodiment of the present invention;

6-8 are schematic diagrams of determining a pixel to be compensated according to an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given in conjunction with the accompanying drawings and specific embodiments.

At present, the contrast ratio of liquid crystal display devices is usually between 600:1 and 1500:1. In order to improve the contrast ratio of liquid crystal display devices, as shown in Figure 1, two liquid crystal display screens can be superimposed and displayed, and the contrast ratio can be as high as 200000: 1. It is close to the effect of the OLED display device. Among them, the A screen is called the main screen, which displays RGB color signals, the B screen is called the Dimming (dimming) screen, and the grayscale image is displayed. The A screen and the B screen are closely attached up and down, and C is the backlight module. One pixel in screen B may correspond to at least one pixel in screen A, and the orthographic projection of the pixel in screen A on screen B falls into the corresponding pixel. Specifically, the resolution of screen A may be 4K (3840*2160) , The display resolution of the B screen can be 2K (1920*1080), that is, one pixel of the B screen corresponds to 4 pixels in the A screen, which can reach 2 million partitions to achieve ultra-high-precision dynamic backlight control.

As shown in Figure 2, when screen A displays a single-pixel white straight line or oblique line in a dark background to form bright line 1, in screen B, only the area 2 corresponding to bright line 1 in screen A will light up, and other positions will be lit. They are all dark states; in this way, there will be no problem in viewing from a positive angle of view, but the angle of view changes slightly, for example, when walking, as shown in Figure 3, the light transmitted by the B screen and the line of sight of the human eye cannot all illuminate the bright lines of the A screen. 1, which causes the white bright line 1 displayed on the A screen to produce color, which is called color cast. For example, the backlight of the blue sub-pixels in the A screen corresponds to the dark state in the B screen. At this time, the white bright line 1 will be yellowish, and the color shift observed with the change of sight will be different, which will seriously affect the display effect and Does not meet the viewing angle requirements.

The essential reason for the color shift phenomenon is the change of the projection position of screen A on screen B when the viewing angle changes. Since 1 pixel in screen B corresponds to 4 pixels of screen A, the partition is very fine, and some parts of screen A are actually viewed when the viewing angle changes. The B-screen data corresponding to the sub-pixels are projected onto the adjacent pixels of the B-screen, which can easily cause color shift at the junction of black and white. Therefore, it is necessary to detect this situation and expand the bright area appropriately. Even when the viewing angle changes, the B-screen can still be used. Effectively align the data on the A screen.

Embodiments of the present invention provide a color shift compensation method, device, and display device, which can improve the color shift problem.

Embodiments of the present invention provide a method for compensating for color shift, which is applied to a display device including a first display panel and a second display panel that are stacked in layers. The first display panel is located on the light-emitting side of the second display panel, so The first display panel is a color display panel, the second display panel is a black and white display panel, and the second pixels of the second display panel correspond to at least one first pixel of the first display panel, as shown in FIG. 4 . shown, the method includes:

Step 101: When a plurality of first pixels of the first display panel display white to form a white line, determine the pixels to be compensated for the second display panel, and the pixels to be compensated are pixels adjacent to the target area, so the pixel to be compensated is determined. The target area is an area composed of second pixels corresponding to a plurality of the first pixels displaying white;

Step 102: Adjust the grayscale value of the pixel to be compensated according to the maximum grayscale value in the neighborhood of the pixel to be compensated, and the neighborhood of the pixel to be compensated consists of the pixel to be compensated and a plurality of second pixels around it. composition.

In this embodiment, when a plurality of first pixels of the first display panel display white to form a white line, the pixels to be compensated for the second display panel are determined, and the pixels to be compensated are pixels adjacent to the target area, and the target area is adjacent to the display panel. In the area composed of the second pixels corresponding to the plurality of white first pixels, the grayscale value of the pixel to be compensated is adjusted according to the maximum grayscale value in the neighborhood of the pixel to be compensated. The neighborhood of the pixel to be compensated consists of the pixel to be compensated and its surrounding composed of a plurality of second pixels. Through the technical solution of the present invention, the bright area of the second display panel can be appropriately expanded, so that when the viewing angle of the viewer changes, the bright area of the second display panel can still effectively correspond to the white lines on the first display panel, which can effectively solve the problem. Color cast when displaying white lines in dark scenes.

Wherein, the orthographic projection of the first pixel on the second display panel falls into the corresponding second pixel.

In some embodiments, if the color depth of the display panel is 8 bits, pixels with a grayscale value greater than 100 may be defined as displaying white, forming a bright area; pixels with a grayscale value <50 may be defined as displaying black, forming a dark area, That is, the grayscale values of the plurality of first pixels that display white are all greater than 100.

The white lines formed by the plurality of first pixels of the first display panel displaying white can be straight lines or folded lines. When the white lines formed by the plurality of first pixels of the first display panel displaying white are folded lines, the folded lines can form white text. . It has been found through experiments that when the width of the preset area composed of the second pixels corresponding to the plurality of first pixels displaying white is single pixel or 2 pixels, the color shift is relatively serious. Two bright areas on the display panel are expanded.

In some embodiments, the adjusting the grayscale value of the pixel to be compensated according to the maximum grayscale value in the neighborhood of the pixel to be compensated includes:

When the extension direction of the target area is the first direction and the width in the second direction is 1 or 2 second pixels, the grayscale value of the pixel to be compensated is adjusted to be adjacent to the pixel to be compensated The maximum grayscale value in the domain, the first direction is perpendicular to the second direction;

When the extending direction of the target area is the second direction and the width in the first direction is 1 or 2 second pixels, the grayscale value of the pixel to be compensated is adjusted to be adjacent to the pixel to be compensated The maximum grayscale value within the domain.

As shown in Figure 6a and Figure 6b, wherein, 3 is a preset area, the preset area 3 corresponds to the white line on the first display panel, the preset area 3 is a bright area, and the width of the preset area 3 is 1 pixel, Then the pixels adjacent to the preset area 3 are the pixels 4 to be compensated. When the extension direction of the preset area 3 is the first direction, in the second direction, the pixels on both sides of the preset area 3 are the pixels to be compensated 4; when the extension direction of the preset area 3 is the second direction, In the first direction, the pixels on both sides of the preset area 3 are the pixels 4 to be compensated. The grayscale value of the pixel to be compensated is adjusted to the maximum grayscale value in the neighborhood of the pixel to be compensated, that is, the pixel to be compensated is adjusted to display white, so that the bright area on the second display panel can be expanded, Improve color cast.

As shown in Figure 7a and Figure 7b, wherein, 3 is a preset area, the preset area 3 corresponds to the white line on the first display panel, the preset area 3 is a bright area, and the width of the preset area 3 is 2 pixels, Then the pixels adjacent to the preset area 3 are the pixels 4 to be compensated. When the extension direction of the preset area 3 is the first direction, in the second direction, the pixels on both sides of the preset area 3 are the pixels to be compensated 4; when the extension direction of the preset area 3 is the second direction, In the first direction, the pixels on both sides of the preset area 3 are the pixels 4 to be compensated. The grayscale value of the pixel to be compensated is adjusted to the maximum grayscale value in the neighborhood of the pixel to be compensated, that is, the pixel to be compensated is adjusted to display white, so that the bright area on the second display panel can be expanded, Improve color cast.

The size of the neighborhood may be 3*3 pixels or 5*5 pixels. Of course, the size of the neighborhood is not limited to the above-mentioned values, and can also be adjusted according to actual needs.

Experiments have found that when the width of the preset area composed of the second pixels corresponding to the plurality of first pixels displaying white is greater than 2 pixels, the color shift will be alleviated. The brightness around the preset area on the display panel is increased.

In some embodiments, the adjusting the grayscale value of the pixel to be compensated according to the maximum grayscale value in the neighborhood of the pixel to be compensated includes:

When the extension direction of the target area is the first direction and the width in the second direction is greater than 2 second pixels, the grayscale value of the pixel to be compensated is adjusted to the maximum value in the neighborhood of the pixel to be compensated half of the grayscale value;

When the extending direction of the target area is the second direction and the width in the first direction is greater than 2 second pixels, the grayscale value of the pixel to be compensated is adjusted to the maximum value in the neighborhood of the pixel to be compensated half of the grayscale value.

As shown in Figure 8a and Figure 8b, where 3 is a preset area, the preset area 3 corresponds to the white line on the first display panel, the preset area 3 is a bright area, and the width of the preset area is 3 pixels, then The pixels adjacent to the preset area are the pixels to be compensated 4 . When the extension direction of the preset area is the first direction, in the second direction, the pixels on both sides of the preset area 3 are the pixels to be compensated 4; when the extension direction of the preset area is the second direction, in the second direction In one direction, the pixels on both sides of the preset area 3 are the pixels 4 to be compensated. Adjusting the grayscale value of the pixel to be compensated to be half of the maximum grayscale value in the neighborhood of the pixel to be compensated, that is, improving the brightness of the area around the bright area of the second display panel, can improve the color shift phenomenon.

The size of the neighborhood may be 3*3 pixels or 5*5 pixels. Of course, the size of the neighborhood is not limited to the above-mentioned values, and can also be adjusted according to actual needs.

Of course, the technical solution of the present invention is not limited to adjusting the gray-scale value of the pixel to be compensated to be half of the maximum gray-scale value in the neighborhood of the pixel to be compensated, and other values can be used as long as it is greater than the original value of the pixel to be compensated. There are grayscale values.

An embodiment of the present invention further provides a color shift compensation device, which is applied to a display device including a first display panel and a second display panel that are stacked and arranged, the first display panel is located on the light-emitting side of the second display panel , the first display panel is a color display panel, the second display panel is a black and white display panel, and the second pixel of the second display panel corresponds to at least one first pixel of the first display panel, as shown in the figure 5, the device includes:

The determining module 21 is configured to determine the pixels to be compensated for the second display panel when a plurality of first pixels of the first display panel display white to form a white line, and the pixels to be compensated are adjacent to the target area pixel, the target area is an area composed of second pixels corresponding to a plurality of the first pixels displaying white;

The processing module 22 is configured to adjust the grayscale value of the pixel to be compensated according to the maximum grayscale value in the neighborhood of the pixel to be compensated, and the neighborhood of the pixel to be compensated consists of the pixel to be compensated and a plurality of surrounding pixels. The second pixel composition.

In this embodiment, when a plurality of first pixels of the first display panel display white to form a white line, the pixels to be compensated for the second display panel are determined, and the pixels to be compensated are pixels adjacent to the target area, and the target area is adjacent to the display panel. In the area composed of the second pixels corresponding to the plurality of white first pixels, the grayscale value of the pixel to be compensated is adjusted according to the maximum grayscale value in the neighborhood of the pixel to be compensated. The neighborhood of the pixel to be compensated consists of the pixel to be compensated and its surrounding composed of a plurality of second pixels. Through the technical solution of the present invention, the bright area of the second display panel can be appropriately expanded, so that when the viewing angle of the viewer changes, the bright area of the second display panel can still effectively correspond to the white lines on the first display panel, which can effectively solve the problem. Color cast when displaying white lines in dark scenes.

Wherein, the orthographic projection of the first pixel on the second display panel falls into the corresponding second pixel.

In some embodiments, if the color depth of the display panel is 8 bits, pixels with a grayscale value greater than 100 may be defined as displaying white, forming a bright area; pixels with a grayscale value <50 may be defined as displaying black, forming a dark area, That is, the grayscale values of the plurality of first pixels that display white are all greater than 100.

The white lines formed by the plurality of first pixels of the first display panel displaying white can be straight lines or folded lines. When the white lines formed by the plurality of first pixels of the first display panel displaying white are folded lines, the folded lines can form white text. . It has been found through experiments that when the width of the preset area composed of the second pixels corresponding to the plurality of first pixels displaying white is single pixel or 2 pixels, the color shift is relatively serious. Two bright areas on the display panel are expanded.

In some embodiments, the processing module 22 is specifically configured to process the to-be-compensated area when the extension direction of the target area is the first direction and the width in the second direction is 1 or 2 second pixels. The grayscale value of the pixel is adjusted to the maximum grayscale value in the neighborhood of the pixel to be compensated; the extension direction of the target area is the second direction, and the width in the first direction is 1 or 2 second pixels , the grayscale value of the pixel to be compensated is adjusted to the maximum grayscale value in the neighborhood of the pixel to be compensated.

As shown in Figure 6a and Figure 6b, wherein, 3 is a preset area, the preset area 3 corresponds to the white line on the first display panel, the preset area 3 is a bright area, and the width of the preset area 3 is 1 pixel, Then the pixels adjacent to the preset area 3 are the pixels 4 to be compensated. When the extension direction of the preset area 3 is the first direction, in the second direction, the pixels on both sides of the preset area 3 are the pixels to be compensated 4; when the extension direction of the preset area 3 is the second direction, In the first direction, the pixels on both sides of the preset area 3 are the pixels 4 to be compensated. The grayscale value of the pixel to be compensated is adjusted to the maximum grayscale value in the neighborhood of the pixel to be compensated, that is, the pixel to be compensated is adjusted to display white, so that the bright area on the second display panel can be expanded, Improve color cast.

As shown in Figure 7a and Figure 7b, wherein, 3 is a preset area, the preset area 3 corresponds to the white line on the first display panel, the preset area 3 is a bright area, and the width of the preset area 3 is 2 pixels, Then the pixels adjacent to the preset area 3 are the pixels 4 to be compensated. When the extension direction of the preset area 3 is the first direction, in the second direction, the pixels on both sides of the preset area 3 are the pixels to be compensated 4; when the extension direction of the preset area 3 is the second direction, In the first direction, the pixels on both sides of the preset area 3 are the pixels 4 to be compensated. The grayscale value of the pixel to be compensated is adjusted to the maximum grayscale value in the neighborhood of the pixel to be compensated, that is, the pixel to be compensated is adjusted to display white, so that the bright area on the second display panel can be expanded, Improve color cast.

The size of the neighborhood may be 3*3 pixels or 5*5 pixels. Of course, the size of the neighborhood is not limited to the above-mentioned values, and can also be adjusted according to actual needs.

Experiments have found that when the width of the preset area composed of the second pixels corresponding to the plurality of first pixels displaying white is greater than 2 pixels, the color shift will be alleviated. The brightness around the preset area on the display panel is increased.

In some embodiments, the processing module 22 is specifically configured to, when the extension direction of the target area is the first direction and the width in the second direction is greater than 2 second pixels, the grayscale of the pixel to be compensated is processed. The grayscale value is adjusted to half of the maximum grayscale value in the neighborhood of the pixel to be compensated; when the extension direction of the target area is the second direction, and the width in the first direction is greater than 2 second pixels, the The grayscale value of the pixel to be compensated is adjusted to be half of the maximum grayscale value in the neighborhood of the pixel to be compensated.

As shown in Figure 8a and Figure 8b, where 3 is a preset area, the preset area 3 corresponds to the white line on the first display panel, the preset area 3 is a bright area, and the width of the preset area is 3 pixels, then The pixels adjacent to the preset area are the pixels to be compensated 4 . When the extension direction of the preset area is the first direction, in the second direction, the pixels on both sides of the preset area 3 are the pixels to be compensated 4; when the extension direction of the preset area is the second direction, in the second direction In one direction, the pixels on both sides of the preset area 3 are the pixels 4 to be compensated. Adjusting the grayscale value of the pixel to be compensated to be half of the maximum grayscale value in the neighborhood of the pixel to be compensated, that is, improving the brightness of the area around the bright area of the second display panel, can improve the color shift phenomenon.

The size of the neighborhood may be 3*3 pixels or 5*5 pixels. Of course, the size of the neighborhood is not limited to the above-mentioned values, and can also be adjusted according to actual needs.

Of course, the technical solution of the present invention is not limited to adjusting the gray-scale value of the pixel to be compensated to be half of the maximum gray-scale value in the neighborhood of the pixel to be compensated, and other values can be used as long as it is greater than the original value of the pixel to be compensated. There are grayscale values.

An embodiment of the present invention also provides a display device, comprising: a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the steps of the above-mentioned color shift compensation method are implemented .

The display device includes but is not limited to: a radio frequency unit, a network module, an audio output unit, an input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply and other components. Those skilled in the art can understand that the structure of the above-mentioned display device does not constitute a limitation on the display device, and the display device may include more or less components described above, or combine some components, or arrange different components. In this embodiment of the present invention, the display device includes, but is not limited to, a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, and the like.

The display device can be any product or component with a display function, such as a TV, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device further includes a flexible circuit board, a printed circuit board and a backplane.

Embodiments of the present invention also provide a computer-readable medium storing a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned color shift compensation method are implemented.

In the method embodiments of the present invention, the sequence numbers of the steps cannot be used to define the sequence of the steps. For those of ordinary skill in the art, the sequence of the steps can be changed without creative work. It also falls within the protection scope of the present invention.

It should be noted that each embodiment in this specification is described in a progressive manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. Especially, for the embodiment, since it is basically similar to the product embodiment, the description is relatively simple, and the relevant part may refer to the partial description of the product embodiment.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited to this. should be included within the scope of protection of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims (10)

1. A color cast compensation method is applied to a display device comprising a first display panel and a second display panel which are arranged in a stacked manner, wherein the first display panel is positioned on a light emergent side of the second display panel, the first display panel is a color display panel, the second display panel is a black-and-white display panel, second pixels of the second display panel correspond to first pixels of at least one first display panel, and the method comprises the following steps:

when a plurality of first pixels of the first display panel display white to form a white line, determining pixels to be compensated of the second display panel, wherein the pixels to be compensated are pixels adjacent to a target area, and the target area is an area formed by second pixels corresponding to the plurality of first pixels displaying white;

and adjusting the gray-scale value of the pixel to be compensated according to the maximum gray-scale value in the neighborhood of the pixel to be compensated, wherein the neighborhood of the pixel to be compensated consists of the pixel to be compensated and a plurality of second pixels around the pixel to be compensated.

2. The color shift compensation method according to claim 1, wherein the gray-scale values of the first pixels displaying white are all greater than 100.

3. The color cast compensation method according to claim 1, wherein the adjusting the gray-scale value of the pixel to be compensated according to the maximum gray-scale value in the neighborhood of the pixel to be compensated comprises:

when the extension direction of the target area is a first direction and the width in a second direction is 1 or 2 second pixels, adjusting the gray-scale value of the pixel to be compensated to the maximum gray-scale value in the neighborhood of the pixel to be compensated, wherein the first direction is vertical to the second direction;

and when the extension direction of the target area is a second direction and the width in the first direction is 1 or 2 second pixels, adjusting the gray-scale value of the pixel to be compensated to the maximum gray-scale value in the neighborhood of the pixel to be compensated.

4. The color cast compensation method according to claim 1, wherein the adjusting the gray-scale value of the pixel to be compensated according to the maximum gray-scale value in the neighborhood of the pixel to be compensated comprises:

when the extension direction of the target area is a first direction and the width in a second direction is larger than 2 second pixels, adjusting the gray-scale value of the pixel to be compensated to be half of the maximum gray-scale value in the neighborhood of the pixel to be compensated, wherein the first direction is vertical to the second direction;

and when the extension direction of the target area is a second direction and the width in the first direction is greater than 2 second pixels, adjusting the gray-scale value of the pixel to be compensated to be half of the maximum gray-scale value in the neighborhood of the pixel to be compensated.

5. A method of color shift compensation according to any of the claims 1-4 characterized in that the size of the neighborhood is 3 x 3 pixels or 5 x 5 pixels.

6. The utility model provides a colour cast compensation arrangement, its characterized in that is applied to the display device including first display panel and the second display panel of range upon range of setting, first display panel is located the light-emitting side of second display panel, first display panel is colored display panel, the second display panel is black and white display panel, the second pixel of second display panel with at least one first pixel of first display panel corresponds, the device includes:

the device comprises a determining module, a calculating module and a calculating module, wherein the determining module is used for determining a pixel to be compensated of the second display panel when a plurality of first pixels of the first display panel display white to form a white line, the pixel to be compensated is a pixel adjacent to a target area, and the target area is an area formed by second pixels corresponding to the plurality of first pixels displaying white;

and the processing module is used for adjusting the gray-scale value of the pixel to be compensated according to the maximum gray-scale value in the neighborhood of the pixel to be compensated, wherein the neighborhood of the pixel to be compensated consists of the pixel to be compensated and a plurality of second pixels around the pixel to be compensated.

7. Color shift compensation device according to claim 6,

the processing module is specifically configured to adjust the gray-scale value of the pixel to be compensated to the maximum gray-scale value in the neighborhood of the pixel to be compensated when the extending direction of the target area is the first direction and the width in the second direction is 1 or 2 second pixels; when the extending direction of the target area is a second direction and the width in the first direction is 1 or 2 second pixels, adjusting the gray-scale value of the pixel to be compensated to the maximum gray-scale value in the neighborhood of the pixel to be compensated, wherein the first direction is vertical to the second direction.

8. Color shift compensation device according to claim 6,

the processing module is specifically configured to, when the extending direction of the target area is a first direction and the width in a second direction is greater than 2 second pixels, adjust the gray-scale value of the pixel to be compensated to be half of the maximum gray-scale value in the neighborhood of the pixel to be compensated; when the extension direction of the target area is a second direction and the width in the first direction is larger than 2 second pixels, adjusting the gray-scale value of the pixel to be compensated to be half of the maximum gray-scale value in the neighborhood of the pixel to be compensated, wherein the first direction is vertical to the second direction.

9. A display device, comprising: memory and processor, the memory storing a computer program which, when executed by the processor, implements the steps of the color shift compensation method according to any one of claims 1 to 5.

10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the color shift compensation method according to any one of claims 1 to 5.

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