CN117373380A - Display brightness compensation method and device, display panel and display driving device - Google Patents

Display brightness compensation method and device, display panel and display driving device Download PDF

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Publication number
CN117373380A
CN117373380A CN202311384600.8A CN202311384600A CN117373380A CN 117373380 A CN117373380 A CN 117373380A CN 202311384600 A CN202311384600 A CN 202311384600A CN 117373380 A CN117373380 A CN 117373380A
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China
Prior art keywords
display
area
processed
brightness data
display brightness
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CN202311384600.8A
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Chinese (zh)
Inventor
吕晓娣
程益明
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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Priority to CN202311384600.8A priority Critical patent/CN117373380A/en
Publication of CN117373380A publication Critical patent/CN117373380A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

The embodiment of the invention discloses a display brightness compensation method and device, a display panel and a display driving device. The display brightness compensation method comprises the following steps: acquiring display brightness data when a display panel displays preset gray scales, wherein a display area of the display panel comprises a region to be processed; correcting the display brightness data of the area to be processed to increase the deviation degree of the display brightness data of the area to be processed relative to the target brightness data under the condition that the display brightness of the area to be processed is different from the target brightness; and taking the display brightness data of the corrected area to be processed as display brightness data to be compensated, wherein the display brightness data to be compensated is used for carrying out display brightness uniformity compensation on the display panel. The technical scheme of the embodiment of the invention is beneficial to reducing the display brightness difference of the display panel so as to improve the uniformity of the display brightness.

Description

Display brightness compensation method and device, display panel and display driving device
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display brightness compensation method and device, a display panel and a display driving device.
Background
With the continuous development of display technology, the performance requirements of display products are higher and higher. At present, the display brightness of different display areas of the existing display panel is different, so that the display brightness of the display panel is uneven, and the overall display effect is poor.
Disclosure of Invention
The embodiment of the invention provides a display brightness compensation method and device, a display panel and a display driving device, so as to reduce display brightness difference of the display panel and improve display brightness uniformity.
In a first aspect, an embodiment of the present invention provides a display brightness compensation method, including:
acquiring display brightness data when a display panel displays preset gray scales, wherein a display area of the display panel comprises a region to be processed;
correcting the display brightness data of the to-be-processed area to increase the deviation degree of the display brightness data of the to-be-processed area relative to the target brightness data under the condition that the display brightness of the to-be-processed area is different from the target brightness;
and taking the corrected display brightness data of the area to be processed as display brightness data to be compensated, wherein the display brightness data to be compensated is used for carrying out display brightness uniformity compensation on the display panel.
Optionally, the display area includes a first display area, a second display area, and a third display area;
the light transmittance of the first display area is larger than that of the second display area and the third display area, the third display area surrounds the first display area and the second display area, and the second display area is positioned between the first display area and the third display area;
the to-be-processed area is any area among the first display area, the second display area and the third display area.
Optionally, when the display brightness of the to-be-processed area is different from the target brightness, correcting the display brightness data of the to-be-processed area to increase the deviation degree of the display brightness data of the to-be-processed area relative to the target brightness data, including:
reducing the display brightness data of the area to be processed under the condition that the display brightness of the area to be processed is lower than the target brightness, and obtaining corrected display brightness data;
preferably, reducing the display brightness data of the area to be processed to obtain corrected display brightness data includes:
taking the product of the display brightness data of the area to be processed and a set gain coefficient as corrected display brightness data, wherein the set gain coefficient is more than 0 and less than 1;
Preferably, the magnitude of the set gain coefficient is positively correlated with the magnitude of the preset gray scale.
Optionally, when the display brightness of the to-be-processed area is different from the target brightness, correcting the display brightness data of the to-be-processed area to increase the deviation degree of the display brightness data of the to-be-processed area relative to the target brightness data, including:
increasing the display brightness data of the area to be processed under the condition that the display brightness of the area to be processed is higher than the target brightness, and obtaining corrected display brightness data;
preferably, increasing the display brightness data of the area to be processed to obtain corrected display brightness data includes:
taking the product of the display brightness data of the area to be processed and a set gain coefficient as corrected display brightness data, wherein the set gain coefficient is more than 1 and less than or equal to m, and m is a positive integer more than 1;
preferably, the magnitude of the set gain coefficient is inversely related to the magnitude of the preset gray scale.
Optionally, the display brightness compensation method further includes:
and positioning the position of the to-be-processed area in the display area based on the position of the sub-pixel in the to-be-processed area under the condition that the display brightness of the to-be-processed area is different from the target brightness so as to correct the display brightness data of the to-be-processed area.
Optionally, positioning the position of the to-be-processed area in the display area based on the position of the sub-pixel in the to-be-processed area to correct the display brightness data of the to-be-processed area includes:
determining coordinates of corresponding positions of the sub-pixels in the display area based on arrangement of the sub-pixels in the display area;
determining a coordinate range of the region to be processed according to the coordinates of the sub-pixels in the region to be processed;
judging whether each coordinate in the display area is positioned in the coordinate range of the area to be processed one by one;
correcting display brightness data corresponding to the coordinates to increase the deviation degree of the display brightness data corresponding to the coordinates relative to target brightness data under the condition that the coordinates which are judged currently are located in the coordinate range of the area to be processed;
preferably, determining the coordinate range of the area to be processed according to the coordinates of the sub-pixels in the area to be processed includes:
determining a coordinate range of the region to be processed according to coordinates of sub-pixels of a starting position and a terminating position of the edge of the region to be processed;
preferably, the shape of the region to be treated includes a rectangle; determining a coordinate range of the region to be processed according to coordinates of sub-pixels of a start position and an end position of the edge of the region to be processed, including:
And determining the coordinate range of the to-be-processed area according to the coordinates of the sub-pixels at the four corners of the to-be-processed area.
Optionally, the display brightness compensation method further includes:
and compensating the display brightness data to be compensated to the target brightness data so as to perform display brightness uniformity compensation on the display panel, so that the compensation degree of the display brightness data of the corrected to-be-processed area to the target brightness data is greater than the compensation degree of the display brightness data of the to-be-processed area before correction to the target brightness data.
In a second aspect, an embodiment of the present invention provides a display brightness compensation apparatus, including:
the display brightness data acquisition module is used for acquiring display brightness data when the display panel displays preset gray scales, and a display area of the display panel comprises a region to be processed;
the display brightness data correction module is used for correcting the display brightness data of the to-be-processed area to increase the deviation degree of the display brightness data of the to-be-processed area relative to the target brightness data under the condition that the display brightness of the to-be-processed area is different from the target brightness;
The to-be-compensated data determining module is used for taking the corrected display brightness data of the to-be-processed area as display brightness data to be compensated, and the display brightness data to be compensated is used for carrying out display brightness uniformity compensation on the display panel.
In a third aspect, an embodiment of the present invention provides a display panel, which performs brightness compensation by using the display brightness compensation method described in the first aspect.
In a fourth aspect, an embodiment of the present invention provides a display driving apparatus, configured to perform brightness compensation on a display panel by using the display brightness compensation method described in the first aspect.
According to the display brightness compensation method and device, the display panel and the display driving device, when the display brightness of the area to be processed is different from the target brightness, the display brightness data of the area to be processed is corrected, so that the deviation degree of the display brightness data of the area to be processed relative to the target brightness data is increased, the corrected display brightness data of the area to be processed is used as the display brightness data to be compensated, the corrected display brightness data is compensated to the compensation degree of the target brightness data when the display panel is subjected to display brightness uniformity compensation, the compensation degree of the display brightness data before correction is larger than the compensation degree of the target brightness data, the compensation degree of the display brightness data of the area to be processed is increased, the problem that the brightness compensation mode of the existing display panel is insufficient to eliminate the display brightness difference is solved, the display brightness deviation of the area to be processed is reduced, the display brightness difference of the area to be processed and other display areas is reduced, and accordingly the display brightness uniformity is improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a display brightness compensation method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a display screen according to an embodiment of the present invention;
FIG. 4 is a flowchart of another display brightness compensation method according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a corresponding relationship curve between a set gain factor and a preset gray level according to an embodiment of the present invention;
FIG. 6 is a flowchart of another display brightness compensation method according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a corresponding relationship between a gain factor and a predetermined gray level according to another embodiment of the present invention;
FIG. 8 is a flowchart of another display brightness compensation method according to an embodiment of the present invention;
FIG. 9 is a partial enlarged view of the display area of FIG. 2;
FIG. 10 is a flowchart of another display brightness compensation method according to an embodiment of the present invention;
FIG. 11 is a flowchart of another display brightness compensation method according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a display brightness compensation device according to an embodiment of the invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As described in the background art, the existing display panel has a problem of uneven display brightness, so that the overall display effect is poor. The following will specifically describe a phenomenon of display luminance unevenness in the related art as an example:
after the concept of the full-screen mobile phone is proposed, the concept of the true full-screen is also brought along, but in recent years, the application of the true full-screen mobile phone is less and less, because the true full-screen mobile phone adopts the under-screen camera technology, which is not perfect. The under-screen camera technology is to place the camera below the screen, and unlike the previous hole digging screen technology, the camera area still has a complete screen display function, which has a great improvement on the integrity of screen display. However, this technology has a disadvantage in that, for example, the display brightness of the under-screen camera region and its peripheral region is different from that of the normal display region, resulting in poor display effect of the under-screen camera region and its peripheral region, and a problem of uneven display brightness, i.e., mura phenomenon.
Related art mura phenomenon in the under-screen camera area and its peripheral area is generally compensated by a display brightness uniformity compensation algorithm (e.g., a demura algorithm). However, since the display brightness difference between these areas and the normal display area is too large, the brightness difference cannot be completely eliminated even after the compensation is performed by the algorithm, and the above-mentioned problems are to be solved.
In view of this, the embodiment of the invention provides a display brightness compensation method, so as to reduce the display brightness difference of the display panel and improve the uniformity of the display brightness. Fig. 1 is a flowchart of a display brightness compensation method according to an embodiment of the present invention. The present embodiment may be applicable to a case of compensating display brightness of a display panel, and the method may be performed by a display brightness compensation device, or by a display driving device, where the display brightness compensation device may be implemented in hardware and/or software, and the display brightness compensation device may be configured in an electronic device. Referring to fig. 1, the method specifically includes the steps of:
s110, obtaining display brightness data when the display panel displays preset gray scales, wherein a display area of the display panel comprises a to-be-processed area.
The display panel includes an Organic Light-Emitting Diode (OLED) display panel. The preset gray scale may be any of 0 gray scale to 255 gray scale, for example, the preset gray scale includes 16 gray scale, 32 gray scale, 64 gray scale, 128 gray scale, 192 gray scale and 224 gray scale. The display luminance data is data representing the magnitude of display luminance, and the larger the value of the display luminance data is, the higher the luminance is, and the smaller the value of the display luminance data is, the lower the luminance is. In one embodiment, the display luminance data includes optical data stored in a file suffixed with csv.
Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the invention. For example, referring to fig. 2, a monochrome display screen when the display area 100 of the display panel displays a preset gray scale is acquired, from which display luminance data of each area of the display area 100 is obtained. For example, monochrome display screens of red, green and blue at 16 gray scale, 32 gray scale, 64 gray scale, 128 gray scale, 192 gray scale and 224 gray scale are respectively acquired by the image acquisition apparatus, and an optical data file corresponding to each display screen is stored.
And S120, correcting the display brightness data of the area to be processed to increase the deviation degree of the display brightness data of the area to be processed relative to the target brightness data under the condition that the display brightness of the area to be processed is different from the target brightness.
The display brightness of the area to be processed is an actual brightness value, the target brightness is a target brightness value corresponding to a preset gray level, and the target brightness data is display brightness data corresponding to the target brightness.
Fig. 3 is a schematic diagram of a display screen according to an embodiment of the present invention, which may specifically be a partial display screen of the display panel shown in fig. 2, where each region of the display screen and the corresponding region of the display panel are labeled. As will be described below with reference to fig. 2 and 3, for example, if the display luminance of a certain area in the display screen of the display area 100 is different from the target luminance, the display luminance data of the area is different from the target luminance data, which indicates that the display luminance of the area is darker or lighter than the target luminance, and the area may be determined as the area to be processed 200.
It will be appreciated that the region to be processed may include one or more sub-pixel regions, and in the case where the display luminance of the region to be processed is different from the target luminance, the display luminance data of each sub-pixel region in the region to be processed is corrected to increase the degree of deviation of the display luminance data of each sub-pixel region in the region to be processed with respect to the target luminance data.
And S130, taking the display brightness data of the corrected area to be processed as display brightness data to be compensated, wherein the display brightness data to be compensated is used for carrying out display brightness uniformity compensation on the display panel.
Specifically, a preset algorithm may be adopted to compensate the display brightness data to be compensated, and the display panel is controlled to display based on the compensated display brightness data, so as to improve the uniformity of display brightness. The preset algorithm includes a display brightness uniformity compensation algorithm, also called as demura algorithm, and the principles of the demura algorithm are as follows: and the display brightness data lower than the target brightness data is lifted to the target brightness data, and the display brightness data higher than the target brightness data is lowered to the target brightness data, so that the display brightness data of each area in the display area is close to the corresponding target brightness data, and the display brightness uniformity is improved.
Referring to fig. 2 and 3, in an embodiment, if the display brightness of the area to be processed 200 is lower than the target brightness, which indicates that the display brightness of the area to be processed 200 is darker, the display brightness data of the area to be processed 200 is smaller than the target brightness data, so that the display brightness data of the area to be processed 200 can be reduced, and the corrected display brightness data can be obtained, thereby increasing the deviation degree of the display brightness data of the area to be processed relative to the target brightness data. Illustratively, the display brightness data before the correction of the area to be processed 200 is denoted by L1, the display brightness data after the correction of the area to be processed 200 is denoted by L2, and the target brightness data of the area to be processed 200 is denoted by L0 > L1 > L2, and L0-L2 > L0-L1. The display luminance data L2 corrected in the area to be processed 200 is used as display luminance data to be compensated, and the demura algorithm is adopted to compensate the corrected display luminance data L2, that is, L2 is compensated to L0, and since L2-L0 > L1-L0, the demura algorithm is adopted to compensate the corrected display luminance data L2 to the compensation degree of the target luminance data L0, which is greater than the compensation degree of the display luminance data L1 before correction to the target luminance data L0, which is equivalent to the increase of the compensation degree of the display luminance data in the area to be processed 200.
In another embodiment, if the display luminance of the area to be processed 200 is higher than the target luminance, which indicates that the display luminance of the area to be processed 200 is brighter, the display luminance data of the area to be processed 200 is larger than the target luminance data, and the display luminance data of the area to be processed 200 can be increased to obtain the corrected display luminance data, so as to increase the deviation degree of the display luminance data of the area to be processed relative to the target luminance data. Illustratively, the display brightness data before the correction of the area to be processed 200 is still represented by L1, L2 represents the display brightness data after the correction of the area to be processed 200, and L0 represents the target brightness data of the area to be processed 200, then L2 > L1 > L0, and L2-L0 > L1-L0. The display luminance data L2 corrected in the area to be processed 200 is used as display luminance data to be compensated, and the demura algorithm is adopted to compensate the corrected display luminance data L2, that is, L2 is compensated to L0, and since L2-L0 > L1-L0, the demura algorithm is adopted to compensate the corrected display luminance data L2 to the compensation degree of the target luminance data L0, which is greater than the compensation degree of the display luminance data L1 before correction to the target luminance data L0, which is equivalent to the increase of the compensation degree of the display luminance data in the area to be processed 200.
According to the technical scheme, when the display brightness of the to-be-processed area is different from the target brightness, the display brightness data of the to-be-processed area is corrected to increase the deviation degree of the display brightness data of the to-be-processed area relative to the target brightness data, the corrected display brightness data of the to-be-processed area is used as the display brightness data to be compensated, so that when the display brightness uniformity compensation is carried out on the display panel, the corrected display brightness data is compensated to the compensation degree of the target brightness data to be greater than the compensation degree of the display brightness data before the correction to the compensation degree of the target brightness data, which is equivalent to increasing the compensation degree of the display brightness data of the to-be-processed area, so that the problem that the brightness compensation mode of the existing display panel is insufficient to eliminate the display brightness difference is solved, the display brightness deviation of the to-be-processed area is facilitated to be reduced, the display brightness difference of the to-be-processed area and other display areas is reduced, and the display brightness uniformity is improved.
It should be noted that, in the case that the preset gray scale includes only a part of the gray scales from 0 gray scale to 255 gray scales, the display brightness data corrected by the to-be-processed area under the rest of the display gray scales except the preset gray scale may be calculated based on the display brightness data corrected by the to-be-processed area under the preset gray scale, so as to perform display brightness uniformity compensation according to the display brightness data corrected by the to-be-processed area, and display the display panel to perform display of each gray scale based on the compensated display brightness data, thereby improving display brightness uniformity of each gray scale.
Referring to fig. 2 and 3, the display area 100 of the display panel may alternatively include a first display area 101, a second display area 102, and a third display area 103. The light transmittance of the first display region 101 is greater than the light transmittance of the second display region 102 and the third display region 103, the third display region 103 surrounds the first display region 101 and the second display region 102, and the second display region 102 is located between the first display region 101 and the third display region 103.
For example, the first display area 101 has a higher light transmittance, and may be used to set an under-screen camera, and the first display area 101 has a display function, the third display area 103 is a normal display area, the second display area 102 is a transition area between the first display area 101 and the third display area 103, for example, a pixel circuit driving a sub-pixel of the first display area 101 may be set in the second display area 102. Fig. 2 and 3 schematically illustrate a case where the second display area 102 is separately disposed on two sides of the first display area 101, and in other embodiments, the second display area 102 may be disposed on only one side of the first display area 101 or disposed around the first display area 101, and the specific position and shape of the second display area 102 are not limited in the embodiments of the present invention.
The region to be processed 200 may be any region among the first display region 101, the second display region 102, and the third display region 103, for example, the region to be processed 200 may be a region having a luminance bias as a whole in the display region 100, or any region having a regular shape in the first display region 101, the second display region 102, and the third display region 103, and is a region in which the display luminance deviates from the target luminance.
Fig. 4 is a flowchart of another display brightness compensation method according to an embodiment of the invention.
Referring to fig. 4, the method specifically includes the steps of:
s210, obtaining display brightness data when the display panel displays preset gray scales, wherein a display area of the display panel comprises a to-be-processed area.
And S220, reducing the display brightness data of the area to be processed under the condition that the display brightness of the area to be processed is lower than the target brightness, and obtaining corrected display brightness data.
Referring to fig. 2 and 3, the present embodiment is described taking the second display area 102 as the area to be processed 200 as an example. For example, in a case where the display luminance of the second display area 102 is darker relative to the display luminance of the other area of the display area 100, and the display luminance of the second display area 102 is lower than the target luminance, the display luminance data of the second display area 102 is smaller relative to the target luminance data, so that the display luminance data of the second display area 102 may be reduced, and corrected display luminance data may be obtained.
In one embodiment, reducing display luminance data of a region to be processed to obtain corrected display luminance data includes: taking the product of the display brightness data of the area to be processed and the set gain coefficient as the corrected display brightness data, wherein the set gain coefficient is more than 0 and less than 1.
For example, the display luminance data of the second display area 102 is multiplied by the set gain coefficient to obtain corrected display luminance data, so that the corrected display luminance data is smaller, and the degree of deviation of the corrected display luminance data from the target luminance data is increased.
Optionally, the magnitude of the set gain factor is positively correlated with the magnitude of the preset gray scale.
Fig. 5 is a schematic diagram of a corresponding relationship curve between a set gain factor and a preset gray level according to an embodiment of the present invention. Referring to fig. 5, the higher the gray-scale value corresponding to the preset gray-scale, the larger the set gain coefficient, and the lower the gray-scale value corresponding to the preset gray-scale, the smaller the set gain coefficient. The lower the gray-scale value corresponding to the preset gray-scale is, the lower the display brightness is, and the smaller the numerical range of the display brightness data is, therefore, for the case that the gray-scale value corresponding to the preset gray-scale is relatively lower, the corrected display brightness data is relatively smaller by setting the set gain coefficient to be relatively smaller, the deviation degree of the corrected display brightness data relative to the target brightness data is larger, and the corrected display brightness data is adopted to perform display brightness uniformity compensation, so that the compensation degree of the display brightness data of the region to be processed 200 is further increased.
S230, taking the display brightness data of the corrected area to be processed as display brightness data to be compensated.
And S240, compensating the display brightness data to be compensated to target brightness data so as to perform display brightness uniformity compensation on the display panel, so that the compensation degree of the display brightness data of the corrected to-be-processed area to the target brightness data is larger than the compensation degree of the display brightness data of the to-be-processed area before correction to the target brightness data.
Under the condition that the display brightness of the second display area 102 is dark, the display brightness data of the second display area 102 is multiplied by a set gain coefficient to obtain corrected display brightness data, the corrected display brightness data is used as display brightness data to be compensated, a demura algorithm is adopted to compensate the display brightness data to be compensated to target brightness data, so that the display brightness data of the area to be processed after the correction of the second display area 102 is compensated to the compensation degree of the target brightness data to be greater than the display brightness data of the area to be processed before the correction of the second display area 102, the effect of increasing the compensation degree of the display brightness data is achieved by reducing the display brightness data, the brightness difference between the second display area 102 and other areas is reduced, namely the brightness difference between the peripheral area of the under-screen camera and the other areas is reduced, and the uniformity of the display brightness is improved.
Fig. 6 is a flowchart of another display brightness compensation method according to an embodiment of the invention.
Referring to fig. 6, the method specifically includes the steps of:
s310, obtaining display brightness data when the display panel displays preset gray scales, wherein a display area of the display panel comprises a to-be-processed area.
And S320, increasing the display brightness data of the area to be processed to obtain corrected display brightness data under the condition that the display brightness of the area to be processed is higher than the target brightness.
Referring to fig. 2 and 3, the present embodiment is described taking the first display area 101 as the area to be processed 200 as an example. For example, in a case where the display luminance of the first display area 101 is brighter than the display luminance of the other area of the display area 100, and the display luminance of the first display area 101 is higher than the target luminance, the display luminance data of the first display area 101 is larger than the target luminance data, and the display luminance data of the first display area 101 may be increased, so as to obtain corrected display luminance data.
In one embodiment, increasing display luminance data of a region to be processed to obtain corrected display luminance data includes: taking the product of the display brightness data of the area to be processed and the set gain coefficient as corrected display brightness data, wherein the set gain coefficient is more than 1 and less than or equal to m, and m is a positive integer more than 1.
For example, the display luminance data of the first display area 101 is multiplied by the set gain coefficient to obtain corrected display luminance data, so that the corrected display luminance data is larger, and the degree of deviation of the corrected display luminance data from the target luminance data is increased.
Optionally, the magnitude of the set gain factor is inversely related to the magnitude of the preset gray scale.
Fig. 7 is a schematic diagram of a corresponding relationship between a set gain factor and a preset gray level according to another embodiment of the present invention. Referring to fig. 7, the higher the gray-scale value corresponding to the preset gray-scale, the smaller the set gain coefficient, and the lower the gray-scale value corresponding to the preset gray-scale, the larger the set gain coefficient. The lower the gray-scale value corresponding to the preset gray-scale is, the lower the display brightness is, and the smaller the numerical range of the display brightness data is, therefore, for the case that the gray-scale value corresponding to the preset gray-scale is relatively lower, the corrected display brightness data is relatively larger by setting the set gain coefficient relatively larger, the deviation degree of the corrected display brightness data relative to the target brightness data is larger, and the corrected display brightness data is adopted to perform display brightness uniformity compensation, so that the compensation degree of the display brightness data of the first display area 101 is further increased.
S330, taking the display brightness data of the corrected area to be processed as the display brightness data to be compensated.
And S340, compensating the display brightness data to be compensated to target brightness data so as to perform display brightness uniformity compensation on the display panel, so that the compensation degree of the display brightness data of the corrected to-be-processed area to the target brightness data is larger than the compensation degree of the display brightness data of the to-be-processed area before correction to the target brightness data.
In the case that the display brightness of the first display area 101 is brighter, the display brightness data of the first display area 101 is multiplied by a set gain coefficient to obtain corrected display brightness data, the corrected display brightness data is used as display brightness data to be compensated, and a demura algorithm is adopted to compensate the display brightness data to be compensated to target brightness data, so that the display brightness data of the area to be processed after the correction of the first display area 101 is compensated to the compensation degree of the target brightness data to be greater than the display brightness data of the area to be processed before the correction of the first display area 101, the effect of increasing the compensation degree of the display brightness data is achieved by increasing the display brightness data, so that the brightness difference between the first display area 101 and other areas is reduced, namely the brightness difference between the area of an under-screen camera and other areas is reduced, and the uniformity of the display brightness is improved.
In other embodiments, if the display brightness of the first display area 101 is brighter than the display brightness of other areas of the display area 100, and the display brightness of the first display area 101 is higher than the target brightness, the display brightness of the second display area 102 is darker than the display brightness of other areas of the display area 100, and the display brightness of the second display area 102 is lower than the target brightness, the technical scheme of the present invention may be adopted to correct the display brightness data of the first display area 101 and the second display area 102, and perform display brightness uniformity compensation based on the display brightness data corrected by the first display area 101 and the second display area 102, so as to reduce the brightness difference between the first display area 101 and the second display area 102 and other areas, that is, reduce the brightness difference between the under-screen camera area and the peripheral area thereof and other areas, thereby being beneficial to improving the display brightness uniformity.
Fig. 8 is a flowchart of another display brightness compensation method according to an embodiment of the invention.
Referring to fig. 8, the method specifically includes the steps of:
s410, obtaining display brightness data when the display panel displays preset gray scales, wherein a display area of the display panel comprises a to-be-processed area.
S420, positioning the position of the to-be-processed area in the display area based on the position of the sub-pixel in the to-be-processed area under the condition that the display brightness of the to-be-processed area is different from the target brightness, so as to correct the display brightness data of the to-be-processed area, and further increase the deviation degree of the display brightness data of the to-be-processed area relative to the target brightness data.
According to the positions of the sub-pixels in the to-be-processed area in the display area, the positions of the to-be-processed area are positioned, so that the positioning accuracy of the to-be-processed area can be improved, and display brightness data corresponding to the sub-pixels in the to-be-processed area can be corrected accordingly, so that the deviation degree of the display brightness data corresponding to the sub-pixels in the to-be-processed area relative to target brightness data can be increased.
In one embodiment, positioning a position of a region to be processed in a display area based on a position of a sub-pixel in the region to be processed to correct display luminance data of the region to be processed includes:
determining coordinates of corresponding positions of the sub-pixels in the display area based on arrangement of the sub-pixels in the display area; determining a coordinate range of the region to be processed according to the coordinates of the sub-pixels in the region to be processed; judging whether each coordinate in the display area is positioned in the coordinate range of the area to be processed one by one; and correcting the display brightness data corresponding to the coordinates to increase the deviation degree of the display brightness data corresponding to the coordinates relative to the target brightness data under the condition that the coordinates which are judged currently are located in the coordinate range of the area to be processed.
Fig. 9 is a partial enlarged view of the display area in fig. 2. Referring to fig. 2 and 9, the second display area 102 is illustratively a region 200 to be processed. A coordinate system is established according to the arrangement mode of the sub-pixels 300 in the display area 100, the x-axis direction of the coordinate system may be the row direction in which the sub-pixels 300 are arranged, and the y-axis direction may be the column direction in which the sub-pixels 300 are arranged, and the coordinates of the sub-pixels 300 in the region 200 to be processed are determined according to the positions of the sub-pixels 300 in the region 200 to be processed in the coordinate system, thereby determining the coordinate range of the region 200 to be processed.
Optionally, determining the coordinate range of the area to be processed according to the coordinates of the sub-pixels in the area to be processed includes: and determining the coordinate range of the region to be processed according to the coordinates of the sub-pixels of the starting position and the ending position of the edge of the region to be processed.
Referring to fig. 9, specifically, according to the coordinates of the sub-pixels 300 of the start position and the end position of each edge of the region to be processed 200, the coordinates of the sub-pixels 300 within the region formed by the surrounding edges of the region to be processed 200 can be determined, thereby determining the coordinate range of the region to be processed 200. The shape of the area to be treated 200 includes various regular shapes such as a rectangle, a circle, and the like. Illustratively, taking the case where the shape of the region to be processed 200 is rectangular as an example, the coordinate range of the region to be processed 200 may be determined according to the coordinates of the sub-pixels 300 at the four corners of the region to be processed 200. For example, for the second display area 102 on one side of the first display area 101, the coordinates of the sub-pixels 300 at the four corners of the second display area 102 are (10, 5), (18,5), (10, 8), (18, 8), respectively, and for the second display area 102 on the other side of the first display area 101, the coordinates of the sub-pixels 300 at the four corners of the second display area 102 are (31, 5), (39,5), (31,8), (18, 39), respectively.
Illustratively, the coordinate range of the area to be processed 200 is represented by an area surrounded by coordinate points (x 1, y 1), (x 2, y 1), (x 1, y 2), (x 2, y 2), after determining the coordinate range of the area to be processed 200, it is determined whether each coordinate point corresponding to each sub-pixel 300 in the display area is located in the coordinate range of the area to be processed 200 one by one, and if each coordinate point (i, j) corresponding to the sub-pixel 300 satisfies: if x1 is less than or equal to i is less than or equal to x2 and y1 is less than or equal to j is less than or equal to y2, it indicates that the sub-pixel 300 is located in the coordinate range of the area to be processed 200, and the display brightness data corresponding to the sub-pixel 300 can be corrected to increase the deviation degree of the display brightness data corresponding to the sub-pixel 300 relative to the target brightness data.
S430, taking the display brightness data of the corrected area to be processed as display brightness data to be compensated.
S440, compensating the display brightness data to be compensated to target brightness data so as to perform display brightness uniformity compensation on the display panel, so that the compensation degree of the display brightness data of the corrected to-be-processed area to the target brightness data is larger than the compensation degree of the display brightness data of the to-be-processed area before correction to the target brightness data.
According to the technical scheme, the coordinates of all the sub-pixels are determined based on the arrangement of the sub-pixels in the display area, the coordinate range of the area to be processed is determined according to the coordinates of the sub-pixels in the area to be processed, accurate positioning of the position of the area to be processed is facilitated, and accordingly display brightness data of the area to be processed are corrected, and whether the display driving device has a local area positioning function or not can be achieved, positioning of the area to be processed and correction of the display brightness data can be achieved by adopting the technical scheme of the embodiment of the invention, and accordingly compensation effect of uniformity of display brightness is improved.
Fig. 10 is a flowchart of another display brightness compensation method according to an embodiment of the present invention, which may be executed by a display brightness compensation device, referring to fig. 10, and specifically includes the following steps:
s510, acquiring a single-color display picture when the display panel displays a preset gray scale, and obtaining display brightness data corresponding to the display picture.
Specifically, the display brightness compensation device may be an electronic device with an image acquisition function, for example, an optical acquisition device such as a camera, and obtain display brightness data corresponding to a display screen by shooting a monochrome display screen when the display panel displays a preset gray scale through the display brightness compensation device.
S520, judging whether the preprocessing operation of the display brightness data is required to be executed.
If there is a region to be processed in the display region with display brightness different from the target brightness, indicating that the preprocessing operation of the display brightness data of the region to be processed is needed, and executing step S530; if the display brightness of each area of the display area is the same as the target brightness, step S540 is performed.
S530, correcting the display brightness data of the area to be processed to increase the deviation degree of the display brightness data of the area to be processed relative to the target brightness data.
S540, storing the current display brightness data as display brightness data to be compensated.
Optionally, after the display brightness compensation device stores the display brightness data of the corrected area to be processed as the display brightness data to be compensated, the display driving device may be used to obtain the display brightness data to be compensated, and the display driving device compensates the display brightness data to be compensated to the target brightness data to perform display brightness uniformity compensation on the display panel, so that the compensation degree of the display brightness data of the corrected area to be processed to the target brightness data is greater than the compensation degree of the display brightness data of the area to be processed before correction to the target brightness data, and the compensated display brightness data is processed and burned to drive the display panel to work.
Fig. 11 is a flowchart of another display brightness compensation method according to an embodiment of the present invention, which may be performed by a display driving device including a display driving chip (Display Driver Integrated Circuit, DDIC) or a touch and display driving integrated (Touch and Display Driver Integration, TDDI) chip, etc. Referring to fig. 11, the method specifically includes the steps of:
s610, obtaining display brightness data when the display panel displays preset gray scale.
S620, judging whether the preprocessing operation of displaying the brightness data is needed to be executed.
If there is a region to be processed in the display region with display brightness different from the target brightness, indicating that the preprocessing operation of the display brightness data of the region to be processed is required, and executing step S630; if the display brightness of each area of the display area is the same as the target brightness, step S640 is performed.
S630, correcting the display brightness data of the area to be processed to increase the deviation degree of the display brightness data of the area to be processed relative to the target brightness data.
And S640, compensating the display brightness data of the area to be processed to target brightness data so as to perform display brightness uniformity compensation on the display panel.
After the execution of step S630 is completed, the display luminance data of the corrected area to be processed is used as the display luminance data to be compensated, the display luminance data to be compensated is transferred to perform demura processing, step S640 is executed, the display luminance data to be compensated is compensated to the target luminance data, so that the display luminance uniformity compensation is performed on the display panel, so that the compensation degree of the display luminance data of the corrected area to be processed is greater than the compensation degree of the display luminance data of the area to be processed before the correction to the target luminance data.
The technical scheme of the invention can be executed by the display brightness compensation device and the display driving device, and can be widely applied to different manufacturers, so that the display brightness compensation method is easy to execute and can be flexibly applied.
Referring to fig. 2, in order to verify the beneficial effects of the present invention, the inventor has conducted a comparative experiment using the same display panel, which is a display panel having a problem of dark display brightness in the second display area 102. In one set of experiments, after display brightness data of a preset gray level is displayed in the second display area 102, the technical scheme of the invention is adopted to correct the display brightness data of the second display area 102, the corrected display brightness data is led into a demura algorithm to be processed, and then the processed data is burnt into a display driving chip, and the display panel is driven to display by the display driving chip to obtain a first display picture. In another set of experiments, after the display brightness data of the second display area 102 for displaying the preset gray scale is obtained, the display brightness data is directly imported into a demura algorithm for processing without any processing, and then the processed data is burnt into a display driving chip, and the display panel is driven to display by the display driving chip, so that a second display picture is obtained. By contrast, the display effect of the second display area 102 in the first display screen is improved, that is, the display effect of the peripheral area of the under-screen camera area is improved, which is beneficial to improving the uniformity of display brightness.
Based on the same inventive concept, the embodiment of the invention also provides a display brightness compensation device. Fig. 12 is a schematic structural diagram of a display brightness compensation device according to an embodiment of the invention. Referring to fig. 12, the display brightness compensation apparatus specifically includes: a display luminance data acquisition module 710, a display luminance data correction module 720, and a data to be compensated determination module 730, wherein:
the display brightness data acquisition module 710 is configured to acquire display brightness data when the display panel displays a preset gray scale, where a display area of the display panel includes a region to be processed;
the display brightness data correction module 720 is configured to correct the display brightness data of the to-be-processed area to increase the deviation degree of the display brightness data of the to-be-processed area relative to the target brightness data when the display brightness of the to-be-processed area is different from the target brightness;
the to-be-compensated data determining module 730 is configured to take the modified display brightness data of the to-be-processed area as to-be-compensated display brightness data, where the to-be-compensated display brightness data is used for performing display brightness uniformity compensation on the display panel.
The display brightness compensation device provided by the embodiment of the invention can execute the display brightness compensation method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Optionally, the display brightness data acquisition module includes:
the display picture acquisition unit is used for acquiring a single-color display picture when the display panel displays preset gray scales;
and a display luminance data acquisition unit for acquiring display luminance data from the monochrome display screen.
Optionally, the display brightness data correction module includes:
a preset judgment switch for judging whether or not a preprocessing operation of displaying luminance data is required to be performed;
a display brightness data correction unit, configured to correct display brightness data of a to-be-processed area when there is a to-be-processed area in which display brightness is different from target brightness in the display area, so as to increase a deviation degree of the display brightness data of the to-be-processed area relative to the target brightness data;
and the display brightness data storage unit is used for storing the current display brightness data as display brightness data to be compensated.
Optionally, the display brightness compensation device further includes:
the to-be-processed area positioning module is used for positioning the position of the to-be-processed area in the display area based on the position of the sub-pixel in the to-be-processed area under the condition that the display brightness of the to-be-processed area is different from the target brightness so as to correct the display brightness data of the to-be-processed area.
Based on the same inventive concept, the embodiment of the invention also provides a display panel, which can adopt the display brightness compensation method provided by any embodiment of the invention to carry out brightness compensation, so that when the display panel is subjected to display brightness uniformity compensation, the corrected display brightness data is compensated to the compensation degree of target brightness data, which is greater than the compensation degree of the display brightness data before correction to the target brightness data, and is equivalent to the compensation degree of the display brightness data of a to-be-processed area, so that the problem that the brightness compensation mode of the existing display panel is insufficient to eliminate the display brightness difference is solved, the display brightness deviation of the to-be-processed area is reduced, the display brightness difference between the to-be-processed area and other display areas is reduced, and the display brightness uniformity is improved.
Based on the same inventive concept, the embodiment of the invention also provides a display driving device, which is used for performing brightness compensation on the display panel by adopting the display brightness compensation method provided by any embodiment of the invention, so that when the display panel is subjected to display brightness uniformity compensation, the corrected display brightness data is compensated to the compensation degree of target brightness data, which is greater than the compensation degree of the display brightness data before correction to the compensation degree of the target brightness data, and the compensation degree of the display brightness data of the area to be processed is increased, so that the problem that the brightness compensation mode of the existing display panel is insufficient to eliminate the display brightness difference is solved, the display brightness deviation of the area to be processed is reduced, the display brightness difference between the area to be processed and other display areas is reduced, and the display brightness uniformity is improved.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. A display brightness compensation method, comprising:
acquiring display brightness data when a display panel displays preset gray scales, wherein a display area of the display panel comprises a region to be processed;
correcting the display brightness data of the to-be-processed area to increase the deviation degree of the display brightness data of the to-be-processed area relative to the target brightness data under the condition that the display brightness of the to-be-processed area is different from the target brightness;
And taking the corrected display brightness data of the area to be processed as display brightness data to be compensated, wherein the display brightness data to be compensated is used for carrying out display brightness uniformity compensation on the display panel.
2. The display brightness compensation method of claim 1, wherein the display area comprises a first display area, a second display area, and a third display area;
the light transmittance of the first display area is larger than that of the second display area and the third display area, the third display area surrounds the first display area and the second display area, and the second display area is positioned between the first display area and the third display area;
the to-be-processed area is any area among the first display area, the second display area and the third display area.
3. The display luminance compensation method according to claim 1, wherein, in the case where the display luminance of the region to be processed is different from the target luminance, correcting the display luminance data of the region to be processed to increase the degree of deviation of the display luminance data of the region to be processed from the target luminance data, comprises:
Reducing the display brightness data of the area to be processed under the condition that the display brightness of the area to be processed is lower than the target brightness, and obtaining corrected display brightness data;
preferably, reducing the display brightness data of the area to be processed to obtain corrected display brightness data includes:
taking the product of the display brightness data of the area to be processed and a set gain coefficient as corrected display brightness data, wherein the set gain coefficient is more than 0 and less than 1;
preferably, the magnitude of the set gain coefficient is positively correlated with the magnitude of the preset gray scale.
4. The display luminance compensation method according to claim 1, wherein, in the case where the display luminance of the region to be processed is different from the target luminance, correcting the display luminance data of the region to be processed to increase the degree of deviation of the display luminance data of the region to be processed from the target luminance data, comprises:
increasing the display brightness data of the area to be processed under the condition that the display brightness of the area to be processed is higher than the target brightness, and obtaining corrected display brightness data;
preferably, increasing the display brightness data of the area to be processed to obtain corrected display brightness data includes:
Taking the product of the display brightness data of the area to be processed and a set gain coefficient as corrected display brightness data, wherein the set gain coefficient is more than 1 and less than or equal to m, and m is a positive integer more than 1;
preferably, the magnitude of the set gain coefficient is inversely related to the magnitude of the preset gray scale.
5. The display luminance compensation method according to claim 1, wherein the display luminance compensation method further comprises:
and positioning the position of the to-be-processed area in the display area based on the position of the sub-pixel in the to-be-processed area under the condition that the display brightness of the to-be-processed area is different from the target brightness so as to correct the display brightness data of the to-be-processed area.
6. The display luminance compensation method according to claim 5, wherein positioning the position of the region to be processed in the display region based on the position of the sub-pixel in the region to be processed to correct the display luminance data of the region to be processed, comprises:
determining coordinates of corresponding positions of the sub-pixels in the display area based on arrangement of the sub-pixels in the display area;
Determining a coordinate range of the region to be processed according to the coordinates of the sub-pixels in the region to be processed;
judging whether each coordinate in the display area is positioned in the coordinate range of the area to be processed one by one;
correcting display brightness data corresponding to the coordinates to increase the deviation degree of the display brightness data corresponding to the coordinates relative to target brightness data under the condition that the coordinates which are judged currently are located in the coordinate range of the area to be processed;
preferably, determining the coordinate range of the area to be processed according to the coordinates of the sub-pixels in the area to be processed includes:
determining a coordinate range of the region to be processed according to coordinates of sub-pixels of a starting position and a terminating position of the edge of the region to be processed;
preferably, the shape of the region to be treated includes a rectangle; determining a coordinate range of the region to be processed according to coordinates of sub-pixels of a start position and an end position of the edge of the region to be processed, including:
and determining the coordinate range of the to-be-processed area according to the coordinates of the sub-pixels at the four corners of the to-be-processed area.
7. The display luminance compensation method according to any one of claims 1 to 6, wherein the display luminance compensation method further comprises:
And compensating the display brightness data to be compensated to the target brightness data so as to perform display brightness uniformity compensation on the display panel, so that the compensation degree of the display brightness data of the corrected to-be-processed area to the target brightness data is greater than the compensation degree of the display brightness data of the to-be-processed area before correction to the target brightness data.
8. A display brightness compensation apparatus, comprising:
the display brightness data acquisition module is used for acquiring display brightness data when the display panel displays preset gray scales, and a display area of the display panel comprises a region to be processed;
the display brightness data correction module is used for correcting the display brightness data of the to-be-processed area to increase the deviation degree of the display brightness data of the to-be-processed area relative to the target brightness data under the condition that the display brightness of the to-be-processed area is different from the target brightness;
the to-be-compensated data determining module is used for taking the corrected display brightness data of the to-be-processed area as display brightness data to be compensated, and the display brightness data to be compensated is used for carrying out display brightness uniformity compensation on the display panel.
9. A display panel characterized in that the brightness compensation is performed by using the display brightness compensation method according to any one of claims 1 to 7.
10. A display driving apparatus for performing luminance compensation of a display panel by using the display luminance compensation method according to any one of claims 1 to 7.
CN202311384600.8A 2023-10-24 2023-10-24 Display brightness compensation method and device, display panel and display driving device Pending CN117373380A (en)

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