CN111276088A - Pixel compensation method - Google Patents
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Abstract
The present disclosure provides a pixel compensation method. The display panel comprises a display panel with an opening of a camera under a screen and a coordinate system, wherein the display panel comprises a plurality of sub-pixels which are regularly arranged, and the coordinate system is constructed according to the positions of the sub-pixels. And according to the shape and the position of the opening of the camera under the screen, defining the circle center and the radius of each section of circular arc of the opening on the coordinate system constructed by the display panel. And determining the distance from the sub-pixel near each arc to the center of the arc. And calculating a gray scale compensation value of each sub-pixel according to a functional relation between the distance from the sub-pixel to the circle center of the circular arc and the radius of the circular arc, and performing gray scale compensation on the sub-pixel needing compensation. The problem that saw tooth feeling is obvious in the edge area of the opening hole of the existing screen lower camera display is solved.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a pixel compensation method.
Background
Conventionally, a large-screen display such as a television is subjected to human-computer interaction through a remote controller. With the development of image recognition processing technology, people can realize deeper interaction between human and machines by additionally arranging a camera on a television, such as remotely controlling the television through gestures or developing more functions by combining with AI technology. At present, the narrow-bezel display is more aesthetic, but the space for the camera to be arranged on the bezel is insufficient, so that the development of the under-screen camera technology is necessary. The camera under the screen occupies a part of the space of the display area on the screen to place the camera, so that a part of pixels need to be removed, and then the panel is cut. The current common perforated shapes include circular holes and water drop holes. Unlike a mobile phone, a large-sized display has large pixels, and the pixels are usually rectangular, which causes the edge area of the opening to have a significant jaggy feeling, and affects the display quality of the display.
Therefore, the problem that the saw-tooth feeling of the edge area of the opening of the existing under-screen camera display is obvious needs to be solved.
Disclosure of Invention
The disclosure provides a pixel compensation method to alleviate the technical problem of obvious saw-tooth feeling in the edge area of an opening of an existing under-screen camera display.
In order to solve the above problems, the technical solution provided by the present disclosure is as follows:
the embodiment of the disclosure provides a pixel compensation method, which includes the following steps: step S10, providing a display panel with an opening of a camera under a screen and constructing a coordinate system, where the display panel includes a plurality of sub-pixels arranged regularly, and the coordinate system is constructed according to positions of the sub-pixels. And step S20, according to the shape and the position of the opening of the screen lower camera, defining the circle center and the radius of each arc of the opening of the screen lower camera on the coordinate system constructed by the display panel. And step S30, determining the distance from the sub-pixel near each arc to the center of the arc. Step S40, calculating the gray scale compensation value of each sub-pixel according to the functional relation between the distance from the sub-pixel to the center of the circular arc and the radius of the circular arc, and performing gray scale compensation on the sub-pixel needing to be compensated.
In the pixel compensation method provided by the embodiment of the present disclosure, in step S10, the coordinate system is constructed with the central point of each of the sub-pixels as a coordinate point.
In the pixel compensation method provided by the embodiment of the present disclosure, in step S10, the coordinate system is constructed by using a central point between two adjacent sub-pixels as a coordinate point.
In the pixel compensation method provided by the embodiment of the present disclosure, in step S20, the shape of the under-screen camera hole is a circular hole, and the coordinates of the first center of the circular hole in the coordinate system and the first radius R1 and the second radius R2 of the circular hole are determined according to the position and the size of the circular hole.
In the pixel compensation method provided by the embodiment of the present disclosure, in step S30, a first distance d1 from the sub-pixel near the circular hole to the first center of the circle is determined.
In the pixel compensation method provided by the embodiment of the present disclosure, in step S40, the relationship between the first distance d1 and the first radius R1 and the second radius R2 of the circular hole is established as a functional relation,
where ra represents the transmittance of each of the sub-pixels.
In the pixel compensation method provided by the embodiment of the present disclosure, in the functional relation, if the first distance d1 is less than or equal to the first radius R1, the transmittance ra of the sub-pixel corresponding to the first distance d1 is 0, the corresponding position is the under-screen camera opening, and the sub-pixel is not disposed.
In the pixel compensation method provided by the embodiment of the disclosure, in the functional relation, if the first distance d1 is greater than the first radius R1 and smaller than the second radius R2, the transmittance of the sub-pixel corresponding to the first distance d1 is greater than 0 and smaller than 1, and the sub-pixel is gray-scale compensated according to the calculated new gray scale by using the product of the original gray scale of the sub-pixel corresponding to the first distance d1 and the transmittance ra as the new gray scale of the sub-pixel.
In the pixel compensation method provided by the embodiment of the disclosure, in the functional relation, if the first distance d1 is greater than or equal to the second radius R2, the transmittance ra of the sub-pixel corresponding to the first distance d1 is 1, and the gray scale of the corresponding sub-pixel does not need to be compensated.
In the pixel compensation method provided by the embodiment of the present disclosure, in step S30, the sub-pixels in the rectangular area including the circular hole are selected, and the first distance d1 from the sub-pixels in the rectangular area to the center of the circular hole is determined.
The beneficial effects of this revelation do: according to the pixel compensation method, the shape of the opening of the camera under the screen is determined, a relevant model is built by using one or more sections of circular arcs, a coordinate system is built according to pixel arrangement on a display panel, and the circle center and the radius of each section of circular arc are defined. The gray scale value of each sub-pixel is calculated according to the distance from the sub-pixel on the display panel to the circle center of the circular arc, the sub-pixel needing to be compensated is compensated, the edge of the opening area of the camera under the screen is smooth, the problem that the sawtooth sense of the opening area of the camera display under the screen is obvious is solved, and the display quality of the display is improved.
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In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating a pixel compensation method according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a coordinate system constructed on a display panel according to an embodiment of the disclosure;
FIG. 3 is a schematic diagram of an embodiment of the present disclosure in which the openings of the under-screen camera are circular holes;
FIG. 4 is a schematic diagram illustrating a target sub-pixel area defined according to an embodiment of the disclosure;
fig. 5 is a schematic view of a hole of a screen camera provided in an embodiment of the present disclosure as a water drop hole;
fig. 6 is a schematic bottom view of a display panel according to an embodiment of the disclosure.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the disclosure may be practiced. Directional phrases used in this disclosure, such as [ upper ], [ lower ], [ front ], [ back ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terms used are used for the purpose of illustration and understanding of the present disclosure, and are not used to limit the present disclosure. In the drawings, elements having similar structures are denoted by the same reference numerals.
In one embodiment, a pixel compensation method is provided, as shown in fig. 1, including the steps of:
step S10, providing a display panel with an opening of a camera under a screen and constructing a coordinate system, where the display panel includes a plurality of sub-pixels arranged regularly, and the coordinate system is constructed according to positions of the sub-pixels.
Specifically, as shown in fig. 2, each sub-pixel 10 on the display panel is rectangular and is arranged on the display panel in a vertically and horizontally ordered manner. The shape and arrangement rule of the sub-pixels of the display panel of the present disclosure are not limited thereto.
Further, the coordinate system is constructed with the center point of each rectangular sub-pixel 10 as a coordinate point (indicated as the center point as indicated by a black dot in fig. 2).
And step S20, according to the shape and the position of the opening of the under-screen camera, defining the circle center and the radius of each arc of the opening on the coordinate system constructed by the display panel.
Specifically, the shape, the position and the size of the opening needed by the camera under the screen on the display panel are determined according to actual requirements. And defining the circle center and the radius of each section of circular arc of the opening on the coordinate system constructed by the display panel according to the determined shape, position and size of the opening.
Further, as shown in fig. 3, taking the shape of the under-screen camera aperture as a circular hole as an example, the coordinate of the first circle center O1 of the circular hole in the coordinate system and the first radius R1 and the second radius R2 of the circular hole are determined according to the position and the size of the circular hole.
Specifically, a circular area with the first radius R1 as a radius and the first circle center O1 as a circle center is an area where the opening of the under-screen camera is arranged.
Further, with the first circle center O1 as a circle center and the second radius R2 as a radius, the area where the under-screen camera opening is disposed is removed, that is, the edge transition area of the camera opening. The pixels in the edge transition area of the camera opening are incomplete pixels, and partial sub-pixels of the pixels in the edge transition area of the opening are cut due to the arrangement of the camera opening under the screen.
And step S30, determining the distance from the sub-pixel near each arc to the center of the arc.
Specifically, according to the coordinates of the sub-pixels near each circular arc in the coordinate system constructed on the display panel and the coordinates of the first center O1, a first distance d1 from the sub-pixels near each circular arc to the first center O1 (e.g., a first distance d1 from a sub-pixel in the aperture edge transition area to the first center O1 as shown in fig. 3) can be calculated.
Further, in order to reduce the amount of calculation, the sub-pixels in a certain area may be selected as the target sub-pixels for calculation, instead of calculating all the sub-pixels near each arc. For example, a sub-pixel in the rectangular region 20 including a circle having the first center O1 as the center and the second radius R2 as the radius may be selected as the target sub-pixel, as shown in fig. 4. A first distance of a sub-pixel within the rectangular area 20 to a first center of the circle is calculated.
Step S40, calculating the gray scale compensation value of each sub-pixel according to the functional relation between the distance from the sub-pixel to the center of the circular arc and the radius of the circular arc, and performing gray scale compensation on the sub-pixel needing to be compensated.
Specifically, the relation between the first distance d1 and the first radius R1 and the second radius R2 of the circular hole is established as a functional relation,
where ra represents the transmittance of each of the sub-pixels.
Specifically, in the functional relation, if the first distance d1 is smaller than or equal to the first radius R1, the transmittance ra of the sub-pixel corresponding to the first distance d1 is 0, the corresponding position is the circular hole, and the sub-pixel is not disposed. That is, the sub-pixels with the first distance d1 smaller than the first radius R1 are located in the under-screen camera opening area, and all the sub-pixels in this area have a gray scale value of 0 or do not need to be filled with pixels.
Specifically, in the functional relation, if the first distance d1 is greater than the first radius R1 and smaller than the second radius R2, the transmittance of the sub-pixel corresponding to the first distance d1 is greater than 0 and smaller than 1, and the product of the original gray scale of the sub-pixel corresponding to the first distance d1 and the transmittance ra is used as the new gray scale of the sub-pixel, so as to perform gray scale compensation on the sub-pixel according to the calculated new gray scale.
Further, the sub-pixels with the first distance d1 larger than the first radius R1 and smaller than the second radius R2 are located at the edge transition region of the under-screen camera aperture. The pixels in the area are positioned at the edge of the opening of the camera under the screen, and partial sub-pixels are cut, so that the area has obvious saw tooth phenomenon during display.
And further, calculating the transmittance of the sub-pixels in the edge transition area of the opening of the camera under the screen corresponding to the function relation. And performing gray scale compensation on the sub-pixel according to the calculated new gray scale by using the product of the original gray scale of the sub-pixel corresponding to the first distance d1 and the transmittance ra as the new gray scale of the sub-pixel. And reducing the gray scale value of the sub-pixel in the edge transition area of the opening of the lower screen camera so as to eliminate the sawtooth phenomenon in the edge transition area of the opening of the lower screen camera.
Specifically, in the functional relation, if the first distance d1 is greater than or equal to the second radius R2, the transmittance ra of the sub-pixel corresponding to the first distance d1 is 1, and the gray scale of the corresponding sub-pixel does not need to be compensated.
Specifically, the sub-pixels with the first distance d1 being greater than or equal to the second radius R2 are located in the area outside the under-screen camera aperture and the edge transition area of the aperture. I.e. the area normally displayed by the display panel. The sub-pixel transmittance in the region is 1, that is, the gray-scale value of the sub-pixel in the region is the original gray-scale value, and no compensation is needed.
In one embodiment, different from the above embodiments, when the coordinate system is constructed on the display panel, a central point between two adjacent sub-pixels is taken as a coordinate point. And the shape of the opening of the lower screen camera is a water drop hole.
Specifically, each sub-pixel on the display panel is rectangular and is arranged on the display panel in a longitudinal and transverse ordered manner.
Further, a coordinate system is constructed on the display panel by taking a central point between two adjacent rectangular sub-pixels as a coordinate point.
Specifically, the shape of the opening of the screen lower camera is a water drop hole, the water drop hole, namely the shape of the opening, comprises a plurality of sections of circular arcs, and the combined shape is similar to a water drop shape.
Specifically, the drip hole includes a circular arc at the bottom end and circular arcs symmetrical to each other on the left and right sides, and the structure of the left half portion of the drip hole as shown in fig. 5 includes a left circular arc AB and a partial circular arc BC at the bottom end.
Specifically, as shown in fig. 5, according to the position and size of the drop hole, the center and radius of each arc of the drop hole are determined on the coordinate system constructed by the display panel. Taking the left circular arc and the bottom part circular arc of the drip hole as an example, the coordinates of a second center O2 of the left circular arc AB of the drip hole and a third radius R3 and a fourth radius R4 of the left circular arc AB are determined on the coordinate system constructed by the display panel.
Further, a region other than the arc having the fourth radius R4 as a radius from the second center O2 as a center is a region where a water droplet hole is provided.
Furthermore, an area where the arc with the fourth radius R4 as the center of the circle and the arc with the second radius O2 as the center of the circle do not intersect with each other with the second center O2 as the center of the circle and the arc with the third radius R3 as the center of the circle is an edge transition area of the camera drip hole. The pixels in the edge transition area of the camera water drop hole are incomplete pixels, and partial sub-pixels of the pixels in the edge transition area of the water drop hole are cut due to the arrangement of the camera water drop hole.
Further, according to the coordinates of the sub-pixel near the water drop hole in the coordinate system constructed on the display panel and the coordinates of the second center O2, the second distance d2 from the sub-pixel near the water drop hole to the second center O2 can be calculated. Of course, since the water drop hole includes multiple circular arcs, when calculating the distance from the sub-pixel to the center of the circle, only the sub-pixel in the corresponding area of each circular arc needs to be calculated.
Further, the second distance d2 is related to the third radius R3 and the fourth radius R4 of the water drop hole by the following functional relation,
where ra represents the transmittance of each of the sub-pixels.
Specifically, in the functional relation, if the second distance d2 is greater than or equal to the fourth radius R4, the transmittance ra of the sub-pixel corresponding to the second distance d2 is 0, the corresponding position is an opening area of a water drop hole, and the sub-pixel is not disposed. That is, the sub-pixels with the second distance d2 being greater than or equal to the fourth radius R4 are located in the opening area of the water drop hole of the under-screen camera, and all the sub-pixels in this area have a gray scale value of 0 or do not need to be filled with pixels.
Specifically, in the functional relationship, if the second distance d2 is greater than the third radius R3 and smaller than the fourth radius R4, the transmittance of the sub-pixel corresponding to the second distance d2 is greater than 0 and smaller than 1, and the product of the original gray scale of the sub-pixel corresponding to the second distance d2 and the transmittance ra is used as the new gray scale of the sub-pixel, so as to perform gray scale compensation on the sub-pixel according to the calculated new gray scale.
Further, the sub-pixels with the second distance d2 larger than the third radius R3 and smaller than the fourth radius R4 are located at the aperture edge transition region of the under-screen camera drop hole. The pixels in the area are positioned at the edge of the opening of the water drop hole of the camera under the screen, and part of sub-pixels are cut, so that the area has obvious saw teeth during display.
And further, calculating the transmittance of the sub-pixels in the opening edge transition region of the water drop hole of the camera under the screen corresponding to the function relation. And performing gray scale compensation on the sub-pixel according to the calculated new gray scale by using the product of the original gray scale of the sub-pixel corresponding to the second distance d2 and the transmittance ra as the new gray scale of the sub-pixel. And reducing the gray scale value of the sub-pixel in the opening edge transition region of the water drop hole of the camera under the screen so as to eliminate the sawtooth phenomenon of the opening edge transition region of the water drop hole of the camera under the screen.
Specifically, in the functional relation, if the second distance d2 is smaller than or equal to the third radius R3, the transmittance ra of the sub-pixel corresponding to the second distance d2 is 1, and the gray scale of the corresponding sub-pixel does not need to be compensated.
Specifically, the sub-pixels with the second distance d2 smaller than or equal to the third radius R3 are located in the area outside the opening of the under-screen camera drop hole and the opening edge transition area. I.e. the area normally displayed by the display panel. The transmittance of the sub-pixel in the region is 1, that is, the gray scale value of the sub-pixel in the region is the original gray scale value, and gray scale compensation is not needed.
Further, as shown in fig. 5, the coordinates of the third center O3 of the circular arc BC of the bottom end portion of the drip hole and the fifth radius R5 and the sixth radius R6 of the circular arc of the bottom end portion are determined on the coordinate system constructed by the display panel. Wherein the length of the fifth radius R5 is equal to the length of the third radius R3 of the left circular arc AB, the length of the sixth radius R6 is equal to the length of the fourth radius R4 of the left circular arc AB, and the third radius R3 where the left circular arc AB meets the bottom end portion circular arc BC intersects the sixth radius R6 in a straight line, or the fourth radius R4 intersects the fifth radius R5 in a straight line (as shown in fig. 5 as intersection point B).
Further, a third distance d3 from the third center O3 is determined for the sub-pixels in the corresponding area of bottom part arc BC. Wherein the second distance and the third distance are not shown in fig. 5, the second distance is denoted by d2 and the third distance is denoted by d3 for descriptive purposes.
Further, a functional relation is established between the third distance d3 and the fifth radius R5 and the sixth radius R6 of the arc BC at the bottom end of the drip hole, a gray scale compensation value of each sub-pixel is calculated, and gray scale compensation is performed on the sub-pixel to be compensated. For a description of the specifically established functional relation and the compensation method, please refer to the description when the shape of the opening of the under-screen camera is a circular hole, which is not described herein again.
In one embodiment, a display panel 100 is provided, as shown in fig. 6, the display panel 100 includes a display area 30, an opening area 40 corresponding to an off-screen camera, and an edge transition area 50 located between the display area 30 and the opening area 40. The sub-pixels of the edge transition region 50 are compensated by the pixel compensation method in the above embodiment.
According to the above embodiments:
the disclosure provides a pixel compensation method, which includes providing a display panel with an opening of a camera under a screen and constructing a coordinate system, wherein the display panel comprises a plurality of sub-pixels which are regularly arranged, and the coordinate system is constructed according to the positions of the sub-pixels. According to the shape and the position of the opening of the camera under the screen, the circle center and the radius of each section of circular arc of the opening are defined on the coordinate system constructed by the display panel. And determining the distance from the sub-pixel near each arc to the center of the arc. And establishing a functional relation according to the distance from the sub-pixel to the circle center of the circular arc and the radius of the circular arc, calculating a gray scale compensation value of the sub-pixel, performing gray scale compensation on the sub-pixel needing to be compensated, realizing smooth edge of an opening area of the camera under the screen, solving the problem of obvious saw tooth feeling of the opening area of the existing camera display under the screen, and improving the display quality of the display.
In summary, although the present disclosure has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present disclosure, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, so that the scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A pixel compensation method, comprising the steps of:
step S10, providing a display panel with an opening of a camera under a screen and constructing a coordinate system, wherein the display panel comprises a plurality of sub-pixels which are regularly arranged, and the coordinate system is constructed according to the positions of the sub-pixels;
step S20, according to the shape and the position of the opening of the screen lower camera, defining the circle center and the radius of each arc of the opening of the screen lower camera on the coordinate system constructed by the display panel;
step S30, determining the distance from the sub-pixel near each section of circular arc to the center of the circular arc; and
step S40, calculating the gray scale compensation value of each sub-pixel according to the functional relation between the distance from the sub-pixel to the center of the circular arc and the radius of the circular arc, and performing gray scale compensation on the sub-pixel needing to be compensated.
2. The pixel compensation method according to claim 1, wherein in step S10, the coordinate system is constructed with a central point of each of the sub-pixels as a coordinate point.
3. The pixel compensation method according to claim 1, wherein in step S10, the coordinate system is constructed by using a central point between two adjacent sub-pixels as a coordinate point.
4. The pixel compensation method according to claim 2 or 3, wherein in step S20, the shape of the under-screen camera hole is a circular hole, and the coordinates of the first center of the circular hole in the coordinate system and the first radius (R1) and the second radius (R2) of the circular hole are determined according to the position and size of the circular hole.
5. The pixel compensation method of claim 4, wherein in step S30, a first distance (d1) from the first center of the circle to the sub-pixel near the circular hole is determined.
6. The pixel compensation method of claim 5, wherein in step S40, the relation between the first distance (d1) and the first radius (R1) and the second radius (R2) of the circular hole is established as a functional relation,
where ra represents the transmittance of each of the sub-pixels.
7. The pixel compensation method according to claim 6, wherein if the first distance (d1) is smaller than or equal to the first radius (R1), the transmittance (ra) of the sub-pixel corresponding to the first distance (d1) is 0, the corresponding position is the circular hole, and the sub-pixel is not disposed.
8. The pixel compensation method of claim 6, wherein if the first distance (d1) is greater than the first radius (R1) and smaller than the second radius (R2), the transmittance of the sub-pixel corresponding to the first distance (d1) is greater than 0 and smaller than 1, and the product of the original gray scale of the sub-pixel corresponding to the first distance (d1) and the transmittance (ra) is used as a new gray scale of the sub-pixel, and the sub-pixel is gray scale compensated according to the calculated new gray scale.
9. The pixel compensation method of claim 6, wherein if the first distance (d1) is greater than or equal to the second radius (R2), the transmittance (ra) of the sub-pixel corresponding to the first distance (d1) is 1, and the gray level of the corresponding sub-pixel does not need to be compensated.
10. The pixel compensation method of claim 4, wherein in step S30, the sub-pixels in a rectangular area containing the circular hole are selected, and a first distance from the sub-pixels in the rectangular area to the first center of the circle is determined (d 1).
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| CN113903304A (en) * | 2021-09-30 | 2022-01-07 | 昆山国显光电有限公司 | Compensation method and compensation device of display panel and display device |
| CN114661394A (en) * | 2022-03-01 | 2022-06-24 | 网易（杭州）网络有限公司 | Interface display control method and device, storage medium and processor |
| CN115641808A (en) * | 2022-08-22 | 2023-01-24 | 北京集创北方科技股份有限公司 | Display device adjusting method and device |
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| CN109859668A (en) * | 2019-03-12 | 2019-06-07 | 深圳市华星光电技术有限公司 | A kind of image compensation method and its device of circle display panel |
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| CN113903304A (en) * | 2021-09-30 | 2022-01-07 | 昆山国显光电有限公司 | Compensation method and compensation device of display panel and display device |
| CN113903304B (en) * | 2021-09-30 | 2022-12-02 | 昆山国显光电有限公司 | Compensation method and compensation device of display panel and display device |
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