CN111477177A - High-speed external optical compensation method and system - Google Patents
High-speed external optical compensation method and system Download PDFInfo
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- CN111477177A CN111477177A CN202010392267.5A CN202010392267A CN111477177A CN 111477177 A CN111477177 A CN 111477177A CN 202010392267 A CN202010392267 A CN 202010392267A CN 111477177 A CN111477177 A CN 111477177A
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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]
- G09G3/3225—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] using an active matrix
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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Abstract
The invention provides a high-speed external optical compensation method and a high-speed external optical compensation system, wherein the high-speed external optical compensation system comprises an OTP (one time programmable) station, a camera acquisition station and a burning station which are sequentially arranged, the OTP station carries out an OTP process, the camera acquisition station carries out a camera photographing acquisition process and an algorithm process, the burning station carries out a burning process, and a plurality of screens can be processed simultaneously through the OTP station, the camera acquisition station and the burning station. The invention has the beneficial effects that: the invention adopts multi-thread distributed operation, realizes the layout of a plurality of screens according to different flows, simultaneously processes, has high efficiency and high accuracy of Demura compensation.
Description
Technical Field
The invention relates to the technical field of AMO L ED screens, in particular to a high-speed external optical compensation method and system.
Background
AMO L ED has advantages of high contrast, ultra-lightness and thinness, flexibility and the like compared with L CD due to the self-luminous characteristic, brightness uniformity and image retention are still two main problems faced by the organic light emitting display diode (O L ED) which has to be applied to external optical compensation (i.e. Demura) technology besides the improvement of the process.
In a general Demura compensation system, four process flows are completed in one work station, and OTP, image acquisition, algorithm calculation and burning are sequentially set for the Demura process. At present, OTP is set in a Demura process, and a camera collects and burns data, so that the space for improving the speed basically according to optimization is limited. Because of these three processes and hardware hooks, the execution speed of the hardware greatly affects the speed of the process. As for reducing the overall mura compensation speed by optimizing the algorithm calculation speed, the lifting space is limited, and if a compression or sampling method is adopted to save data, the mura compensation effect is reduced more or less, which is not beneficial to the lifting of the product grade.
Disclosure of Invention
The improvement of the mura compensation speed determines the increase of yield, so that the economic cost can be greatly reduced.
Aiming at the problems of the background art, the invention provides a high-speed external optical compensation method in order to solve the efficiency of Demura equipment and improve the productivity efficiency in unit time.
The invention provides a high-speed external optical compensation method, which comprises the following steps:
step 1: after the screen body A is put in, the equipment sends a signal and is connected with the Mura compensation control module, and after the Mura compensation control module receives the equipment signal, the screen body is lightened at the OTP work station, and the OTP process is started;
step 2: after the Mura compensation control module waits for the processes of the OTP work station, the camera acquisition work station and the burning work station to be completed, the Mura compensation control module sends a signal to equipment, and the equipment operates;
and step 3: when the equipment stops, the equipment sends a corresponding signal to the Mura compensation control module, a scheduling screen A enters a camera acquisition work station to carry out a camera photographing acquisition process and an algorithm process, and each time one picture is acquired by the camera acquisition work station, the picture is put into an algorithm thread, so that the camera photographing acquisition and the algorithm are carried out simultaneously; meanwhile, the inflow screen body B enters an OTP work station to carry out an OTP process;
and 4, step 4: after the Mura compensation control module waits for the processes of the OTP work station, the camera acquisition work station and the burning work station to be completed, the Mura compensation control module sends a signal to equipment, and the equipment operates;
and 5: when the equipment stops, the equipment sends a corresponding signal to the mura compensation control module, and the OTP work station waits for the screen body C to flow in; the camera acquisition work station starts to carry out a camera photographing acquisition process and an algorithm process of the screen body B; after the screen body A finishes the camera shooting acquisition process and the algorithm process, directly carrying out the burning process at the burning station;
step 6: after the Mura compensation control module waits for the processes of the OTP work station, the camera acquisition work station and the burning work station to be completed, the Mura compensation control module sends a signal to equipment, and the equipment operates;
and 7: when the equipment stops, the equipment sends a corresponding signal to the mura compensation control module, and the OTP work station waits for the screen body D to flow in; the camera acquisition work station starts to carry out a camera photographing acquisition process and an algorithm process of the screen body C; after the screen body B finishes the camera shooting acquisition process and the algorithm process, directly carrying out the burning process at the burning station; after the screen body A finishes the burning process, the screen body A is manually taken out or flows into downstream equipment;
and 8: if the screen body continues to enter, the screen body sequentially enters the OTP work station, the camera acquisition work station and the burning work station and corresponding process processing is carried out.
As a further improvement of the present invention, in the camera photographing and collecting process, the camera performs photographing analysis according to a camera collecting picture set before the system is started, and the collecting picture is each gray scale picture of white, red, blue and green.
As a further improvement of the invention, a Gamma station is further included between the OTP station and the camera acquisition station, and a Gamma process is carried out in the Gamma station.
The invention also provides a high-speed external optical compensation system which comprises the OTP station, the camera acquisition station and the burning station which are sequentially arranged, wherein the OTP station carries out the OTP process, the camera acquisition station carries out the camera photographing acquisition process and the algorithm process, and the burning station carries out the burning process, so that a plurality of screens can be processed simultaneously through the OTP station, the camera acquisition station and the burning station.
As a further improvement of the invention, the high-speed external optical compensation system also comprises a Gamma station, wherein the Gamma station carries out Gamma technology, and a plurality of screens can be processed simultaneously through the OTP station, the Gamma station, the camera acquisition station and the burning station.
The invention has the beneficial effects that: the invention adopts multi-thread distributed operation, realizes the layout of a plurality of screens according to different flows, simultaneously processes, has high efficiency and high accuracy of Demura compensation.
Drawings
FIG. 1 is a schematic view of the entry of the screen into each station;
FIG. 2 is a process scheduling sequence diagram for a single panel;
FIG. 3 is a schematic diagram of the working principle of the workstation according to an embodiment of the invention;
FIG. 4 is a process flow diagram of an embodiment of the present invention.
Detailed Description
As shown in fig. 1, the present invention discloses a high-speed external optical compensation method, comprising the steps of:
step 1: manually or upstream flows into a screen body A (note that the number of the screen body A corresponding to the actual screen body can be 1,2,4 or more), after the screen body A is put in, the equipment sends a signal, network interaction is carried out according to a protocol defined by the equipment, a Mura compensation control module is connected, and after the Mura compensation control module receives the equipment signal, the screen body is lightened at the OTP station, and the technological process of OTP is started.
Step 2: after the Mura compensation control module waits for the processes of the OTP work station, the camera acquisition work station and the burning work station to be completed, the Mura compensation control module sends a signal to equipment, and the equipment operates.
And step 3: when the equipment stops, the equipment sends a corresponding signal to the Mura compensation control module, a scheduling screen body A enters a camera acquisition work station to carry out a camera photographing acquisition process, when the camera acquisition work station starts, a thread corresponding to the screen body is started, and each time a picture is acquired by the camera acquisition work station, the picture is put into an algorithm thread, so that camera photographing acquisition and an algorithm are carried out simultaneously; meanwhile, the screen body B (the number of the screen bodies actually corresponding to the screen body B is consistent with that of the screen body A, and can be 1,2,4 or more) flows into the OTP workstation manually or from upstream equipment to carry out the OTP process.
And 4, step 4: after the Mura compensation control module waits for the processes of the OTP work station, the camera acquisition work station and the burning work station to be completed, the Mura compensation control module sends a signal to equipment, and the equipment operates.
And 5: when the equipment stops, the equipment sends a corresponding signal to the mura compensation control module, and the OTP station waits for the screen body C (the number of the screen bodies C actually corresponding to the screen body C is consistent with that of the screen bodies A and B, and can be 1,2,4 or more) to flow in; the camera acquisition work station starts to carry out camera photographing acquisition process and algorithm process (algorithm thread) of the screen body B for algorithm processing; after the screen body A finishes the camera shooting acquisition process and the algorithm process, directly carrying out the burning process at the burning station; the algorithmic processes herein do not correspond to a specific physical location of the equipment in the system. The positions of other processes are in corresponding relation with the positions of the equipment.
Step 6: after the Mura compensation control module waits for the processes of the OTP work station, the camera acquisition work station and the burning work station to be completed, the Mura compensation control module sends a signal to equipment, and the equipment operates.
And 7: when the equipment stops, the equipment sends a corresponding signal to the mura compensation control module, and the OTP station waits for the screen body D (the number of the screen bodies actually corresponding to the screen body D is consistent with that of the screen body A, the screen body B and the screen body C, and can be 1,2,4 or more) to flow in; the camera acquisition work station starts to carry out a camera photographing acquisition process and an algorithm process of the screen body C; after the screen body B finishes the camera shooting acquisition process and the algorithm process, directly carrying out the burning process at the burning station; after the screen body A finishes the burning process, the screen body A is manually taken out or flows into downstream equipment.
And 8: if the screen body continues to enter, the screen body sequentially enters the OTP work station, the camera acquisition work station and the burning work station and corresponding process processing is carried out.
In the camera photographing and collecting process, according to a camera collecting picture set before the system is started, the camera performs photographing analysis, and the collecting picture is a gray scale picture (a gray scale definition is used for seeing the annotation 1) of white, red, blue and green.
Note 1: the gray scale is obtained by dividing the brightness variation between the brightest and darkest into several parts. Taking an 8-bit frame as an example, the 8 th power of 2 can be expressed, which is equal to 256 brightness levels, and we refer to the 256 gray levels.
The above is the step of scheduling a plurality of screens simultaneously, and as for the process scheduling sequence of one of the screens as shown in fig. 2, the scheduling sequence can be changed according to the change of the process flow.
Generally, the number of the screens which can be processed simultaneously at different stations in different processes in each process can be 1,2,4 or 5, and can be determined according to the performance of the signal generator driving the screens and the arrangement number of the cameras. But one camera is guaranteed to correspond to one screen body.
The process of the embodiment is divided into four stations, and is shown in fig. 4 for four steps (OTP, Gamma, camera acquisition and burning) in the process, and the Demura process flow is divided into four processes of OTP, Gamma adjustment, camera image acquisition and burning. The four processes correspond to four stations as shown in fig. 3.
In the invention, the first station is an OTP station, the second station is a Gamma station, the third station is a camera acquisition station, and the fourth station is a burning station.
The four stations can simultaneously carry out different screen operations, thereby greatly shortening the Demura process movement time and improving the productivity. The four stations of the embodiment are relatively independent devices and are respectively controlled in an independent mode.
Manually throwing the screen body in the OTP work station; manually clicking a screen and switching pictures; and (4) lightening the screen body and carrying out the OTP process.
And performing Gamma process at a Gamma station.
And finishing the camera photographing acquisition process and the algorithm process at the camera acquisition station.
And after the algorithm is finished, carrying out burning compensation according to the data calculated by the algorithm in a burning station to finish the burning process.
As an embodiment of the present invention, the specific steps are as follows:
step A: and (4) at the OTP work station, releasing the screen body, lightening the screen body and carrying out the OTP process. The screen is then moved into a Gamma station.
And B: and in the Gamma station, if the OTP process is successful, performing the Gamma process. If the failure occurs, the process flow is skipped. And moving the screen body into a camera acquisition station.
And C: in a camera acquisition station, if the Gamma process is successful, camera shooting image acquisition (camera shooting image acquisition process) is carried out, images of R, G, B with different gray scales, such as 32, 64, 96, 160, 192 and 224, are acquired, brightness data of each screen body are extracted, and algorithm compensation calculation (algorithm process) is carried out; if the failure occurs, the process flow is skipped. And moving the screen body into a burning station.
Step D: and in the burning station, after the algorithm calculation is finished, carrying out a burning process flow. And after the burning is finished, moving the screen body into the OTP work station.
Step E: and D, manually observing the compensation effect of the burned screen body or directly taking out the screen body at the OTP work station, then manually putting the screen body again, and then repeatedly executing the steps A-E.
In the scheme, four work stations exist, and 4 screen bodies simultaneously perform the Demura compensation process. Therefore, on the premise of not changing the algorithm, the Demura compensation speed is greatly optimized.
The OTP is a memory type of the singlechip, which means that the OTP is one-time programmable, and after a program is burnt into the singlechip, the OTP cannot be changed and cleared again.
The OTP process comprises the steps of erasing original data in an OTP register of an AMO L ED screen, burning an external optical compensation program into the OTP register, and burning the external optical compensation program into the OTP register only once.
The camera photographing and collecting process comprises the steps of lighting an AMO L ED screen, importing different pictures, collecting images by utilizing a CCD camera on compensation equipment, and automatically identifying the arrangement relation of sub-pixels, wherein pictures needing to be detected after the AMO L ED screen is clicked are generally different according to the requirements of different panel factories, and comprise WRGB images with 32, 64, 96, 160, 192 and 224 gray scales, and 24 pictures in total.
And (4) calculating a Mura area of the AMO L ED screen, detecting a Mura boundary and generating compensation data.
And in the burning process, the generated compensation data is burnt into a Flash chip of the AMO L ED screen.
The algorithm process comprises the following steps:
an averaging step: calculating the average value of the data in the table based on the original Demura table;
a comparison step: comparing each data in the original Demura table with the calculated average;
a judging step: when the absolute value of the difference value between the compared data and the average value is larger than a preset threshold value, determining that the sub-pixel corresponding to the compared data is contained in the Mura area; and when the absolute value of the difference value between the compared data and the average value is less than or equal to a preset threshold value, determining that the sub-pixel corresponding to the compared data is not contained in the Mura area. The preset threshold value can be determined according to the display effect of the display panel.
In the burning process, after compensation data are burned into a Flash chip of an AMO L ED screen, a bright area of the AMO L ED screen is darkened, a dark area of the AMO L ED screen is lightened, or an area with color cast is eliminated, and the final effect is that the brightness and the color displayed in different areas of the panel are approximately the same (pure color picture).
After the burning process is executed, manually switching each picture of W (white) R (red) G (green) B (blue) to observe the mura compensation effect of each picture, wherein the whole system flow adopts distributed parallel work, and an AMO L ED screen with good compensation can be produced in 15 s.
The OTP process, the camera photographing acquisition process and the burning process adopt a multi-thread mode to realize synchronous processing.
The invention also discloses a high-speed external optical compensation system which comprises the OTP station, the camera acquisition station and the burning station which are sequentially arranged, wherein the OTP station carries out the OTP process, the camera acquisition station carries out the camera photographing acquisition process and the algorithm process, and the burning station carries out the burning process, so that a plurality of screens can be processed simultaneously through the OTP station, the camera acquisition station and the burning station.
The high-speed external optical compensation system also comprises a Gamma station, wherein the Gamma station carries out Gamma technology, and a plurality of screen bodies can be processed simultaneously through the OTP station, the Gamma station, the camera acquisition station and the burning station.
Multithreading refers to a technique for implementing concurrent execution of multiple threads from software or hardware. The computer with multithreading capability can execute more than one thread at the same time due to the hardware support, thereby improving the overall processing performance. Systems with this capability include symmetric multiprocessors, multi-core processors, and Chip-level multiprocessing (Chip-level multithreading) or Simultaneous multithreading (Simultaneous multithreading) processors. In a program, these independently running program fragments are called "threads" (threads), and the concept of programming using them is called "Multithreading". A computer with multithreading capability, because of its hardware support, can execute more than one thread (taiwan as a "thread") at the same time, thereby improving overall processing performance.
Multithreading is to complete multiple tasks simultaneously, not to improve the efficiency of operation, but to improve the efficiency of resource usage to improve the efficiency of the system. Threads are implemented when multiple tasks need to be completed at the same time.
The invention has the following beneficial effects:
1. the whole production flow adopts multi-thread distributed operation, the compensation process flow is divided, the simultaneous parallel processing of a plurality of screen bodies at different positions is realized, the specific deployment mode is flexible, and the adaptation can be carried out according to the single-chip production time and the total capacity requirement.
2. When the image is obtained, the mura of each gray scale can be basically obtained by sequentially sampling the pictures of the plurality of gray scales of W, R, G and B, so that the accuracy of mura compensation is ensured.
3. After the algorithm compensation, the invention can also switch any picture to check the compensation effect, and if the compensation is not good, the compensation effect can be improved by optimizing the algorithm.
And 4, dividing the mura compensation into station types according to the process, and increasing the mura compensation speed through the station type dividing process flow.
5. On the premise of not moving the mura compensation algorithm, the mura compensation speed is improved by adding external hardware.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A high-speed external optical compensation method, comprising the steps of:
step 1: after the screen body A is put in, the equipment sends a signal and is connected with the Mura compensation control module, and after the Mura compensation control module receives the equipment signal, the screen body is lightened at the OTP work station, and the OTP process is started;
step 2: after the Mura compensation control module waits for the processes of the OTP work station, the camera acquisition work station and the burning work station to be completed, the Mura compensation control module sends a signal to equipment, and the equipment operates;
and step 3: when the equipment stops, the equipment sends a corresponding signal to the Mura compensation control module, a scheduling screen A enters a camera acquisition work station to carry out a camera photographing acquisition process and an algorithm process, and each time one picture is acquired by the camera acquisition work station, the picture is put into an algorithm thread, so that the camera photographing acquisition and the algorithm are carried out simultaneously; meanwhile, the inflow screen body B enters an OTP work station to carry out an OTP process;
and 4, step 4: after the Mura compensation control module waits for the processes of the OTP work station, the camera acquisition work station and the burning work station to be completed, the Mura compensation control module sends a signal to equipment, and the equipment operates;
and 5: when the equipment stops, the equipment sends a corresponding signal to the mura compensation control module, and the OTP work station waits for the screen body C to flow in; the camera acquisition work station starts to carry out a camera photographing acquisition process and an algorithm process of the screen body B; after the screen body A finishes the camera shooting acquisition process and the algorithm process, directly carrying out the burning process at the burning station;
step 6: after the Mura compensation control module waits for the processes of the OTP work station, the camera acquisition work station and the burning work station to be completed, the Mura compensation control module sends a signal to equipment, and the equipment operates;
and 7: when the equipment stops, the equipment sends a corresponding signal to the mura compensation control module, and the OTP work station waits for the screen body D to flow in; the camera acquisition work station starts to carry out a camera photographing acquisition process and an algorithm process of the screen body C; after the screen body B finishes the camera shooting acquisition process and the algorithm process, directly carrying out the burning process at the burning station; after the screen body A finishes the burning process, the screen body A is manually taken out or flows into downstream equipment;
and 8: if the screen body continues to enter, the screen body sequentially enters the OTP work station, the camera acquisition work station and the burning work station and corresponding process processing is carried out.
2. The high-speed external optical compensation method according to claim 1, wherein in the camera photographing collection process, according to a camera collection picture set before system startup, the camera performs photographing analysis, and the collection picture is each gray scale picture of white, red, blue, and green.
3. The method of high speed external optical compensation of claim 1 further comprising a Gamma station between the OTP station and the camera acquisition station where a Gamma process is performed.
4. The high-speed external optical compensation method according to claim 1,
the OTP process comprises the steps that a screen body is an AMO L ED screen, original data in an OTP register of the AMO L ED screen are erased, and an external optical compensation program is burnt into the OTP register;
the camera photographing and collecting process comprises the steps of lighting an AMO L ED screen, importing different pictures, collecting images by using a CCD (charge coupled device) camera on compensation equipment, and automatically identifying the arrangement relation of sub-pixels;
calculating a Mura area of an AMO L ED screen, detecting a Mura boundary and generating compensation data;
and in the burning process, the generated compensation data is burned into a Flash chip of the AMO L ED screen.
5. The high-speed external optical compensation method according to claim 4, wherein in the camera photographing and collecting process, collected images are WRGB images of 32, 64, 96, 160, 192 and 224 gray levels.
6. The high-speed external optical compensation method of claim 4, wherein the algorithmic process comprises:
an averaging step: calculating the average value of the data in the table based on the original Demura table;
a comparison step: comparing each data in the original Demura table with the calculated average;
a judging step: when the absolute value of the difference value between the compared data and the average value is larger than a preset threshold value, determining that the sub-pixel corresponding to the compared data is contained in the Mura area; and when the absolute value of the difference value between the compared data and the average value is less than or equal to a preset threshold value, determining that the sub-pixel corresponding to the compared data is not contained in the Mura area.
7. The high-speed external optical compensation method according to claim 4, wherein in the burning process, after the compensation data is burned into the Flash chip of the AMO L ED screen, the bright area of the AMO L ED screen is darkened, the dark area of the AMO L ED screen is lightened, or the color-biased area of the AMO L ED screen is eliminated.
8. The high-speed external optical compensation method according to claim 3, wherein the OTP process, the Gamma process, the camera photographing and capturing process and the burning process are performed in a multi-thread manner to achieve synchronous processing.
9. The utility model provides a high-speed outside optical compensation system, its characterized in that, includes OTP worker station, camera collection worker station and the record worker station of arranging in proper order, OTP worker station carries out the OTP technology, camera collection worker station carries out camera collection technology and algorithm process of shooing, record worker station and burn the technology, can handle the polylith screen body simultaneously through OTP worker station, camera collection worker station and record worker station.
10. The high speed external optical compensation system of claim 9, further comprising a Gamma station, wherein the Gamma station performs Gamma processing, and wherein multiple panels can be processed simultaneously by the OTP station, the Gamma station, the camera capture station, and the burn station.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114170935A (en) * | 2021-11-25 | 2022-03-11 | Tcl华星光电技术有限公司 | Display device compensation method and display device |
| CN114170935B (en) * | 2021-11-25 | 2023-08-01 | Tcl华星光电技术有限公司 | Display device compensation method and display device |
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