CN111883054A - Compensation method and compensation device of display panel - Google Patents
Compensation method and compensation device of display panel Download PDFInfo
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- CN111883054A CN111883054A CN202010737801.1A CN202010737801A CN111883054A CN 111883054 A CN111883054 A CN 111883054A CN 202010737801 A CN202010737801 A CN 202010737801A CN 111883054 A CN111883054 A CN 111883054A
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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]
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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
- 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
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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
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
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- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a compensation method and a compensation device for a display panel. The compensation method of the display panel comprises the following steps: acquiring a current display picture of a display panel; updating compensation data of the display panel according to the current display picture and the target pixel value; and compensating the display panel according to the updated compensation data. The compensation data of the display panel is updated through the current display picture and the target pixel value, the problem of uneven brightness caused by the aging phenomenon in the use process of the display panel can be compensated through the updated compensation data, so that the display panel can be compensated when the aging phenomenon occurs in the use process of the display panel, the problem of uneven brightness generated in the use process of the display panel is effectively solved, the replacement rate in the use process of the display panel is reduced, the cost generated in the use process of the display panel during replacement is reduced, the use cost of the display panel is reduced, the utilization rate of the display panel is improved, and the user experience is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a compensation method and a compensation device for a display panel.
Background
An Organic Light Emitting Diode (OLED) display panel is a mainstream of the display panel because it has advantages of lightness, thinness, wide viewing angle range, flexible display, and the like.
The service lives of the light-emitting materials in the OLED Display panel are different from each other, so that the service life of the OLED Display panel is shortened quickly relative to that of a Liquid Crystal Display panel (LCD), a user can use the OLED Display panel for a period of time, the phenomenon that a Display picture is remained and aged occurs in the OLED Display panel, the problem that the brightness uniformity of the OLED Display panel is poor is caused, the Display effect of the OLED Display panel is reduced, and the experience of the user on the OLED Display panel is reduced. In order to ensure the display effect of the OLED display panel, a user generally adopts a method of replacing the OLED display panel, which not only reduces the utilization rate of the OLED display panel, but also generates high cost, and further reduces the user experience.
Disclosure of Invention
The invention provides a compensation method and a compensation device of a display panel, which are used for improving the utilization rate of the display panel and reducing the replacement rate and cost of the display panel.
In a first aspect, an embodiment of the present invention provides a compensation method for a display panel, including:
acquiring a current display picture of a display panel;
updating compensation data of the display panel according to the current display picture and the target pixel value;
and compensating the display panel according to the updated compensation data.
Optionally, updating compensation data of the display panel according to the current display picture and the target pixel value includes:
determining the current display data of each pixel of the display panel according to the current display picture;
determining current compensation data of each pixel according to the current display data and the corresponding target pixel value;
and updating the compensation data of the display panel according to the current compensation data of each pixel.
Optionally, updating the compensation data of the display panel according to the current compensation data of each of the pixels includes:
and burning the current compensation data of each pixel into a compensation data storage unit of the display panel to replace the compensation data of the display panel.
Optionally, after compensating the display panel according to the updated compensation data, the method further includes:
and after the display panel displays a period of time, updating the compensation data of the display panel again.
Optionally, updating the compensation data of the display panel again includes:
obtaining the current display picture of the display panel again;
determining the latest compensation data of each pixel according to the current display picture and the target pixel value which are obtained again;
burning the latest compensation data into a compensation data storage unit of the display panel to replace the current compensation data of the display panel.
Optionally, after updating the compensation data of the display panel again, the method further includes:
and compensating the display panel according to the updated compensation data.
Optionally, before acquiring the display screen of the display panel, the method further includes:
determining compensation data of the display panel according to an initial display picture of the display panel and the target pixel value;
and burning the compensation data of the display panel to a compensation data storage unit of the display panel.
In a second aspect, an embodiment of the present invention further provides a compensation apparatus for a display panel, including:
the current display picture acquisition module is used for acquiring a current display picture of the display panel;
the compensation data updating module is used for updating the compensation data of the display panel according to the current display picture and the target pixel value;
and the compensation module is used for compensating the display panel according to the updated compensation data.
Optionally, the compensation data updating module includes:
the current display data determining unit is used for determining the current display data of each pixel of the display panel according to the current display picture;
a current compensation data determining unit, configured to determine current compensation data of each pixel according to the current display data and a corresponding target pixel value;
and the updating unit is used for updating the compensation data of the display panel according to the current compensation data of each pixel.
Optionally, the updating unit includes:
and the burning system is used for burning the current compensation data of each pixel into the compensation data storage unit of the display panel to replace the compensation data of the display panel.
The technical proposal of the embodiment of the invention can compensate the display panel by the external compensation method when the aging phenomenon occurs in the using process of the display panel by acquiring the current display picture of the display panel in the using process of the display panel and updating the compensation data of the display panel according to the current display picture and the target pixel value, and then compensate the display panel according to the updated compensation data, thereby realizing the compensation of the display panel by the external compensation method when the aging phenomenon occurs in the using process of the display panel, effectively improving the problem of uneven brightness in the using process of the display panel, reducing the replacing rate in the using process of the display panel, reducing the cost generated when the display panel is replaced in the using process, reducing the using cost of the display panel and simultaneously improving the utilization rate of the display panel, the user experience is improved.
Drawings
Fig. 1 is a schematic flowchart illustrating a compensation method for a display panel according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a compensation method for a display panel according to another embodiment of the present invention;
FIG. 3 is a flowchart illustrating a compensation method for a display panel according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a compensation apparatus of a display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a flowchart illustrating a compensation method for a display panel according to an embodiment of the present invention. The present embodiment is applicable to a case where the display panel has uneven brightness of a display screen during use and needs to be compensated, and the method may be performed by a compensation apparatus of the display panel, as shown in fig. 1, and the compensation method of the display panel includes:
s110, acquiring a current display picture of a display panel;
specifically, the current display screen of the display panel may be a display screen during the use of the display panel. When the current display screen of the display panel is obtained, a device such as a Charge Coupled Device (CCD) image sensor may be used to take a picture.
S120, updating compensation data of the display panel according to the current display picture and the target pixel value;
specifically, the compensation data of the display panel may be data for compensating the light emitting brightness of the display panel when the brightness uniformity of the display panel is ensured in the manufacturing process of the display panel. For example, during the manufacturing process of the display panel, an external compensation method may be adopted to compensate the light emitting brightness of the display panel, that is, a method of sensing the optical characteristics of the pixels by an external device and then compensating. When the optical characteristics of the sensing pixels are compensated externally, the display panel can be photographed through devices such as a CCD and the like to obtain the luminous brightness of the display panel, and compensation data required by the uneven brightness of the display panel is calculated through the luminous brightness and the target luminous brightness, namely the compensation data of the display panel. The compensation data of the display panel is mainly used for compensating the brightness unevenness of the display panel caused by the process and other reasons in the manufacturing process of the display panel. The compensation data of the display panel can be stored in the compensation data storage unit of the display panel through burning, and the compensation data in the compensation data storage unit is called to compensate the display panel in the display process of the display panel.
After the current display screen of the display panel is acquired, data processing may be performed on the current display screen to determine current display data of the display panel, which may be, for example, current light emitting brightness of the display panel. The target pixel value may be a preset light emission brightness value of the display panel. After determining the current display data of the display panel, the current compensation data of the display panel may be determined according to a difference between the target pixel value and the current display data of the display panel. For example, the target pixel value and the difference value of the current display data of the display panel may be equally matched to form the current compensation data of the display panel. The current compensation data of the display panel is obtained on the basis of the current display picture of the display panel, so that the current compensation data of the display panel can compensate the problem of uneven brightness of the display panel caused by aging of the display panel and the like in the using process of the display panel. After the current compensation data of the display panel is obtained, the compensation data in the compensation data storage unit of the display panel is updated, so that the current compensation data of the display panel is adopted for compensation in the subsequent compensation process.
And S130, compensating the display panel according to the updated compensation data.
Specifically, the updated compensation data is the current compensation data of the display panel, when the updated compensation data is adopted to compensate the display panel, the uneven brightness of the light emitted by the aging phenomenon in the using process of the display panel can be compensated, so that the display panel can be compensated by an external compensation method when the aging phenomenon occurs in the using process of the display panel, the problem of uneven brightness generated in the using process of the display panel is effectively solved, the replacement rate of the display panel in the using process is reduced, the cost generated in the replacing process of the display panel in the using process is reduced, the use cost of the display panel is reduced, the utilization rate of the display panel is improved, and the user experience is improved.
The technical scheme of the embodiment obtains the current display picture of the display panel in the using process of the display panel, updates the compensation data of the display panel according to the current display picture and the target pixel value, so that the updated compensation data can compensate the problem of uneven brightness caused by the aging phenomenon in the using process of the display panel, and then compensates the display panel according to the updated compensation data, thereby realizing the compensation of the display panel by an external compensation method when the aging phenomenon occurs in the using process of the display panel, effectively improving the problem of uneven brightness in the using process of the display panel, reducing the replacing rate in the using process of the display panel, reducing the cost generated when the display panel is replaced in the using process, reducing the using cost of the display panel, and simultaneously improving the utilization rate of the display panel, the user experience is improved.
Optionally, before acquiring the display screen of the display panel, the method further includes:
determining compensation data of the display panel according to an initial display picture and a target pixel value of the display panel;
specifically, the initial display frame may be a detection display frame used by the display panel manufacturing process to detect the display panel. In the manufacturing process of the display panel, the display panel has a phenomenon of uneven brightness when displaying an initial display picture due to a manufacturing process and the like. The method comprises the steps of obtaining an initial display picture of a display panel, processing image data to obtain display data of the display panel, and determining compensation data needing to be compensated in the manufacturing process of the display panel according to the display data and a target pixel value.
And burning the compensation data of the display panel into the compensation data storage unit of the display panel.
Specifically, after the compensation data of the display panel is determined, the PG inspection machine may be connected to the compensation data storage unit, and the compensation data is burned into the compensation data storage unit through the PG inspection machine, so that the compensation data of the display panel is burned into the compensation data storage unit. And in the use process of the display panel, the driving chip of the display panel calls the compensation data in the compensation data storage unit to compensate the display picture of the display panel.
Fig. 2 is a flowchart illustrating another compensation method for a display panel according to an embodiment of the present invention. As shown in fig. 2, the method includes:
s210, acquiring a current display picture of the display panel;
s220, determining the current display data of each pixel of the display panel according to the current display picture;
specifically, after the current display picture is obtained, pixel-level data processing may be performed on the current display picture, and display data corresponding to each pixel is determined, so that a pixel-level compensation method is applied to the display panel in a subsequent process.
S230, determining the current compensation data of each pixel according to the current display data and the corresponding target pixel value;
specifically, the target pixel value includes a plurality of values. For example, when each pixel of the display panel corresponds to one current display data, each pixel may be set to correspond to a set of target pixel values, and the current compensation data of each pixel may be calculated according to the current display data of each pixel and the corresponding target pixel value, so that each pixel may correspond to a specific current compensation data.
It should be noted that the target pixel value corresponding to each pixel may include target pixel values of at least two gray levels, and the target pixel values of all gray levels corresponding to each pixel may be determined according to the target pixel value corresponding to each pixel.
And S240, updating the compensation data of the display panel according to the current compensation data of each pixel.
Specifically, after acquiring the current compensation data of each pixel, updating the compensation data of the display panel according to the current compensation data of each pixel, including:
and burning the current compensation data of each pixel into a compensation data storage unit of the display panel to replace the compensation data of the display panel.
For example, in the burning process, a PG checker may be used to connect with the compensation data storage unit. When the display panel carries out compensation, the current compensation data of each pixel can be burned into the compensation data storage unit through the PG checking machine, and the original compensation data in the compensation data storage unit is covered, so that the updating of the compensation data is realized.
And S250, compensating the display panel according to the updated compensation data.
Specifically, after the compensation data is updated, each pixel corresponds to specific current compensation data, and in the compensation process, specific compensation is performed on each pixel of the display panel, so that the compensation precision of each pixel can be improved, the compensation precision of the display panel can be improved, and the brightness uniformity of the display panel is further improved.
Fig. 3 is a flowchart illustrating another compensation method for a display panel according to an embodiment of the present invention. As shown in fig. 3, the method includes:
s310, acquiring a current display picture of the display panel;
s320, updating compensation data of the display panel according to the current display picture and the target pixel value;
and S330, compensating the display panel according to the updated compensation data.
And S340, updating the compensation data of the display panel again after the display panel displays a period of time.
Specifically, when the display panel displays after updating the compensation data, the driving chip of the display panel may call the updated compensation data in the compensation data storage unit to compensate the display frame of the display panel, so as to ensure the brightness uniformity of the display frame of the display panel. Along with the increase of the service time of the display panel, the aging phenomenon generated in the use process of the display panel is further increased, so that the updated compensation data cannot compensate the uneven brightness generated by the further aging of the display panel, at the moment, the compensation data of the display panel can be updated again, and the updated compensation data can compensate the uneven brightness caused by the aging phenomenon generated when the service time of the display panel is increased, so that the problem of the uneven brightness generated in the use process of the display panel can be improved again, the replacement rate of the display panel in the use process is further reduced, the cost generated when the display panel is replaced in the use process is reduced, the use cost of the display panel is reduced, the utilization rate of the display panel is improved, and the user experience is improved.
It should be noted that the period of time displayed by the display panel may be set according to the requirement of the brightness uniformity of the display panel, and if the requirement of the brightness uniformity of the display panel is relatively high, the period of time displayed by the display panel is relatively short.
Optionally, updating the compensation data of the display panel again includes:
obtaining the current display picture of the display panel again;
specifically, as the service time of the display panel increases, when the display panel has a problem of poor brightness uniformity again, the display panel may be photographed by using a device such as a CCD, and the current display picture of the display panel may be acquired again.
Determining the latest compensation data of each pixel according to the current display picture and the target pixel value which are obtained again;
specifically, after the current display screen of the display panel is acquired again, the acquired current display screen may be subjected to data processing to determine the latest display data of the display panel. The updated display data may include compensation data for each pixel. After the latest display data of the display panel is determined, the latest compensation data of the display panel may be determined according to a difference between the target pixel value and the latest display data of the display panel. The latest compensation data is obtained on the basis of the increase of the use time of the display panel, so that the latest compensation data of the display panel can compensate the increase of the use time of the display panel, and the display panel is further aged to cause the uneven brightness of the display panel.
And burning the latest compensation data into a compensation data storage unit of the display panel to replace the current compensation data of the display panel.
Specifically, after the latest compensation data of each pixel is determined, the PG inspection machine may be connected to the compensation data storage unit, and the latest compensation data of each pixel is burned into the compensation data storage unit through the PG inspection machine and covers the current compensation data in the compensation data storage unit, so as to update the compensation data again.
On the basis of the above technical solution, after updating the compensation data of the display panel again, the method further includes:
and compensating the display panel according to the updated compensation data.
Specifically, the compensation data updated again is the latest compensation data of the display panel, when the compensation data updated again is adopted to compensate the display panel again, the uneven brightness caused by the aging phenomenon generated by the display panel when the service time of the display panel is increased can be compensated, so that the uneven brightness problem generated in the use process of the display panel can be improved again, the replacement rate of the display panel in the use process is further reduced, the cost generated in the replacement process of the display panel in the use process is reduced, the use cost of the display panel is reduced, the utilization rate of the display panel is improved simultaneously, and the user experience is improved.
Fig. 4 is a schematic structural diagram of a compensation apparatus for a display panel according to an embodiment of the present invention. As shown in fig. 4, the compensation apparatus of the display panel includes:
a current display image obtaining module 10, configured to obtain a current display image of a display panel;
a compensation data updating module 20, configured to update the compensation data of the display panel according to the current display frame and the target pixel value;
and the compensation module 30 is used for compensating the display panel according to the updated compensation data.
The technical scheme of the embodiment obtains the current display picture of the display panel in the using process of the display panel through the current display picture obtaining module, updates the compensation data of the display panel through the compensation data updating module according to the current display picture and the target pixel value, so that the updated compensation data can compensate the problem of uneven luminous brightness caused by the aging phenomenon in the using process of the display panel, and then compensates the display panel through the compensation module according to the updated compensation data, thereby realizing the compensation of the display panel through an external compensation method when the aging phenomenon occurs in the using process of the display panel, effectively improving the problem of uneven brightness generated in the using process of the display panel, reducing the replacing rate of the display panel in the using process, and reducing the cost generated when the display panel is replaced in the using process, the use cost of the display panel is reduced, the utilization rate of the display panel is improved, and the user experience is improved.
On the basis of the technical scheme, the compensation data updating module comprises:
the current display data determining unit is used for determining the current display data of each pixel of the display panel according to the current display picture;
the current compensation data determining unit is used for determining the current compensation data of each pixel according to the current display data and the corresponding target pixel value;
and the updating unit is used for updating the compensation data of the display panel according to the current compensation data of each pixel.
Specifically, after the compensation data is updated, each pixel corresponds to specific current compensation data, and in the compensation process, specific compensation is performed on each pixel of the display panel, so that the compensation precision of each pixel can be improved, the compensation precision of the display panel can be improved, and the brightness uniformity of the display panel is further improved.
Optionally, the update unit includes:
and the burning system is used for burning the current compensation data of each pixel into the compensation data storage unit of the display panel to replace the compensation data of the display panel.
Specifically, the burning system may include a PG checker, which is connected to the compensation data storage unit through the PG checker, and the current compensation data is burned to the compensation data storage unit through the PG checker, and covers the original compensation data in the compensation data storage unit, thereby updating the compensation data.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A compensation method for a display panel, comprising:
acquiring a current display picture of a display panel;
updating compensation data of the display panel according to the current display picture and the target pixel value;
and compensating the display panel according to the updated compensation data.
2. The compensation method for the display panel according to claim 1, wherein updating the compensation data of the display panel according to the current display picture and the target pixel value comprises:
determining the current display data of each pixel of the display panel according to the current display picture;
determining current compensation data of each pixel according to the current display data and the corresponding target pixel value;
and updating the compensation data of the display panel according to the current compensation data of each pixel.
3. The compensation method for a display panel according to claim 2, wherein updating the compensation data of the display panel according to the current compensation data of each of the pixels comprises:
and burning the current compensation data of each pixel into a compensation data storage unit of the display panel to replace the compensation data of the display panel.
4. The compensation method for a display panel according to claim 2, after compensating the display panel according to the updated compensation data, further comprising:
and after the display panel displays a period of time, updating the compensation data of the display panel again.
5. The compensation method for the display panel according to claim 4, wherein the updating the compensation data of the display panel again comprises:
obtaining the current display picture of the display panel again;
determining the latest compensation data of each pixel according to the current display picture and the target pixel value which are obtained again;
burning the latest compensation data into a compensation data storage unit of the display panel to replace the current compensation data of the display panel.
6. The compensation method for a display panel according to claim 4, further comprising, after updating the compensation data for the display panel again:
and compensating the display panel according to the updated compensation data.
7. The compensation method for the display panel according to claim 1, further comprising, before acquiring the display screen of the display panel:
determining compensation data of the display panel according to an initial display picture of the display panel and the target pixel value;
and burning the compensation data of the display panel to a compensation data storage unit of the display panel.
8. A compensation apparatus for a display panel, comprising:
the current display picture acquisition module is used for acquiring a current display picture of the display panel;
the compensation data updating module is used for updating the compensation data of the display panel according to the current display picture and the target pixel value;
and the compensation module is used for compensating the display panel according to the updated compensation data.
9. The compensation apparatus of claim 8, wherein the compensation data update module comprises:
the current display data determining unit is used for determining the current display data of each pixel of the display panel according to the current display picture;
a current compensation data determining unit, configured to determine current compensation data of each pixel according to the current display data and a corresponding target pixel value;
and the updating unit is used for updating the compensation data of the display panel according to the current compensation data of each pixel.
10. The compensation apparatus for a display panel according to claim 9, wherein the update unit comprises:
and the burning system is used for burning the current compensation data of each pixel into the compensation data storage unit of the display panel to replace the compensation data of the display panel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113257167A (en) * | 2021-05-13 | 2021-08-13 | Tcl华星光电技术有限公司 | Display picture compensation method |
| TWI780744B (en) * | 2021-06-04 | 2022-10-11 | 大陸商北京集創北方科技股份有限公司 | Pixel compensation method for OLED display panel, OLED display device, and information processing device |
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