CN114582276A - Demura burning device, method, equipment and storage medium - Google Patents
Demura burning device, method, equipment and storage medium Download PDFInfo
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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]
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- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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Abstract
The application discloses a Demura burning device, a Demura burning method, a Demura burning device and a storage medium. The device comprises: the image control module is electrically connected with the display panel and is used for controlling the display panel to display an image picture under a preset Gamma parameter and a preset gray scale; the optical shooting module is used for shooting an image to obtain first image brightness information; the compensation data calculation module is used for generating optical compensation data according to the first picture brightness information and a preset compensation algorithm; the burning module is electrically connected with the storage chip of the display panel and is used for erasing data of the first storage area of the storage chip and burning the optical compensation data to the first storage area; the first time interval corresponding to the data erasing of the burning module is at least partially overlapped with the second time interval corresponding to the image picture shot by the optical shooting module. According to the embodiment of the application, data erasing and image picture shooting can be simultaneously carried out in a part of time period, burning time is reduced, and burning efficiency and production efficiency are improved.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a Demura burning device, method, equipment and storage medium.
Background
Currently, a display panel is composed of pixel circuits and light emitting elements arranged in an array. The pixel circuit is generally composed of a TFT (Thin Film Transistor) and a capacitor. Due to the difference in threshold voltage between the TFTs on the display panel, there is an abnormality in the drive current of the light emitting elements, so that a mura phenomenon, which is a difference in luminance or color, occurs between the light emitting elements.
In order to eliminate the mura phenomenon, the conventional Demura method for eliminating the brightness unevenness mainly includes that after a display panel is lightened, an optical camera is used for shooting a picture to obtain actual brightness data so as to calculate compensation parameters of each pixel, and the compensation parameters are burned into the display panel.
In order to burn the compensation parameters into the display panel, the drive chip Driver IC of the display panel can be controlled to erase data of the storage chip Flash IC, and then the calculated compensation parameters are burnt into the Flash IC. However, when the display panel displays a picture, the Driver IC needs to output a corresponding data signal, and the Driver IC cannot perform data burning on the Flash IC. That is, the display screen and the burning data cannot be performed simultaneously, so that the time for burning the compensation parameter is long, and the burning efficiency and the production efficiency of the display panel are limited.
Disclosure of Invention
The embodiment of the application provides a Demura burning device, a Demura burning method, a Demura burning device and a storage medium, and can solve the technical problem that the time consumption of burning compensation data to a Flash IC by a display panel is long.
In a first aspect, an embodiment of the present application provides a Demura burning apparatus for burning optical compensation data to a display panel, the Demura burning apparatus including:
the image control module is electrically connected with the display panel and is used for controlling the display panel to display an image picture under a preset Gamma parameter and a preset gray scale;
the optical shooting module is used for shooting an image picture to obtain corresponding first picture brightness information;
the compensation data calculation module is used for generating optical compensation data corresponding to the image picture according to first picture brightness information corresponding to the image picture and a preset compensation algorithm;
the burning module is electrically connected with the storage chip of the display panel and is used for erasing data of the first storage area of the storage chip and burning the optical compensation data to the first storage area; the first time interval corresponding to the data erasing of the first storage area by the burning module is at least partially overlapped with the second time interval corresponding to the image picture shot by the optical shooting module.
In a second aspect, an embodiment of the present application provides a Demura recording method applied to the above Demura recording apparatus, where the method includes:
controlling a display panel to display an image picture under preset Gamma parameters and preset gray scales;
when the display panel displays an image picture, shooting the image picture to obtain corresponding first picture brightness information; the time interval for shooting the image picture is a second time interval;
performing data erasing on a first storage area of a storage chip of the display panel; the time interval for erasing the data in the first storage area is a first time interval, and the first time interval and the second time interval at least partially overlap;
generating optical compensation data corresponding to the image picture according to the first picture brightness information and a preset compensation algorithm;
and burning the optical compensation data into a first storage area of the storage chip.
In a third aspect, an embodiment of the present application provides a Demura burn recording apparatus, where the Demura burn recording apparatus includes: a processor and a memory storing computer program instructions;
the processor, when executing the computer program instructions, implements the Demura burn method as described above.
In a fourth aspect, an embodiment of the present application provides a computer storage medium, where computer program instructions are stored on the computer storage medium, and when the computer program instructions are executed by a processor, the Demura burn method as above is implemented.
Compared with the prior art, the Demura burning device, the Demura burning method, the Demura burning equipment and the storage medium provided by the embodiment of the application are characterized in that the burning module is electrically connected with the storage chip of the display panel, and when the image control module controls the display panel to display the image picture or the optical shooting module to shoot the image picture, the burning module can erase data in the first storage area of the storage chip. After the corresponding optical compensation data is calculated according to the first picture brightness information obtained by shooting, the burning module can burn the optical compensation data to the first storage area which has finished the data erasing. Because the erasing process of the burning module to the storage chip and the shooting process of the optical shooting module to the image picture can be respectively and independently carried out, the erasing process and the shooting process can be simultaneously carried out in the overlapping time interval by setting the first time interval and the second time interval to be partially overlapped, so that when the image picture is displayed on the display panel, the total consumption of the erasing process and the shooting process is reduced, the Demura burning time is reduced, and the burning efficiency and the production efficiency are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a Demura recording apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a memory chip according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a memory chip according to another embodiment of the present application;
FIG. 5 is a schematic flow chart illustrating a Demura burn recording method according to an embodiment of the present disclosure;
FIG. 6 is a schematic flow chart illustrating a Demura burn recording method according to another embodiment of the present application;
FIG. 7 is a schematic flow chart illustrating a Demura burning method according to another embodiment of the present application;
FIG. 8 is a schematic flow chart illustrating a Demura burn recording method according to yet another embodiment of the present application;
fig. 9 is a schematic diagram of a hardware structure of a Demura burning apparatus according to an embodiment of the present application.
In the drawings:
1. a Demura burn device; 2. a display panel; 10. an image control module; 11. an optical photographing module; 12. a compensation data calculation module; 13. a burning module; 20. a memory chip; 21. a flexible circuit board; 22. contacting the male tip; 23. burning a contact; 24. and burning the lead.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The embodiments will be described in detail below with reference to the accompanying drawings.
A display panel is generally composed of pixel circuits and light emitting elements arranged in an array. The pixel circuit is generally composed of a TFT and a capacitor. Due to the difference in threshold voltage between the TFTs on the display panel, there is an abnormality in the drive current of the light emitting elements, so that a mura phenomenon, which is a difference in luminance or color, occurs between the light emitting elements.
In order to eliminate the mura phenomenon, the conventional Demura method mainly includes shooting a picture by using an optical camera to obtain actual brightness data after a display panel is lighted, so as to calculate compensation parameters of each pixel, and burning the compensation parameters into the display panel.
When picture shooting and burning compensation parameters are carried out on the display panel, the Driver IC can be controlled to carry out data erasing on the Flash IC. However, when the display panel displays a picture, the Driver IC needs to output a corresponding data signal, and when the display panel displays a picture, the Flash IC cannot be erased because the Driver IC is occupied. That is, the display frames and the erasing data need to be performed alternately, which results in the increase of the time consumption of the burning compensation parameters, and limits the burning efficiency and the production efficiency of the display panel.
In order to solve the above technical problem, embodiments of the present application provide a Demura recording apparatus, method, device and storage medium. The following first describes a display panel provided in an embodiment of the present application.
Fig. 1 shows a schematic structural diagram of a Demura burning apparatus 1 according to an embodiment of the present application. The Demura burning device 1 can be electrically connected with the display panel 2 and burns optical compensation data to the display panel 2, and the Demura burning device 1 comprises an image control module 10, an optical shooting module 11, a compensation data calculating module 12 and a burning module 13.
The image control module 10 is electrically connected to the display panel 2, and the image control module 10 may light the display panel 2 and control the display panel 2 to switch image frames with different Gamma parameters and different gray scales for display.
When the image control module 10 controls the display panel 2 to display an image frame with a preset Gamma parameter and a preset gray scale, the optical capturing module 11 may capture the image frame to obtain first frame brightness information corresponding to the image frame.
The compensation data calculating module 12 may calculate, according to the first image brightness information obtained by the shooting by the optical shooting module 11 and a preset compensation algorithm, optical compensation data corresponding to each pixel in the image under a preset Gamma parameter and a preset gray scale.
The burning module 13 may be electrically connected to the memory chip 20 in the display panel 2, and the burning module 13 may erase data from a first memory area of the memory chip 20 and burn optical compensation data corresponding to an image frame with a preset Gamma parameter and a preset gray scale into the first memory area.
The memory chip 20 includes a plurality of first memory areas, and each of the first memory areas stores optical compensation data corresponding to one image frame. When the image control module 10 controls the display panel 2 to adjust the preset Gamma parameter or adjust the preset gray scale to display the next image frame, the optical shooting module 11 can shoot the next image frame to obtain the corresponding first frame brightness information, the compensation data calculation module 12 can calculate the optical compensation data corresponding to the next image frame, the burning module 13 can erase the data of the first storage area storing the optical compensation data corresponding to the next image frame, and store the optical compensation data corresponding to the next image frame into the first storage area after the data is erased. The Demura burning process can be completed by controlling the display panel 2 to sequentially display image frames under different Gamma parameters and different gray scales and storing the optical compensation data corresponding to each image frame into the corresponding first storage area in which the data erasure is completed. After the display panel 2 completes Demura burn recording, the driving chip in the display panel 2 can call corresponding Gamma parameters and corresponding optical compensation data under gray scale from the storage chip 20, and correspondingly adjust data voltage according to the optical compensation data to eliminate the mura phenomenon.
In the process of burning the optical compensation data corresponding to the image frame under the preset Gamma parameter and the preset gray scale into the memory chip 20, the burning module 13 may erase data from the first memory area in the memory chip 20 in the first time interval, and the optical shooting module 11 may shoot the image frame displayed by the display panel 2 in the second time interval. Since the shooting process of the optical shooting module 11 does not involve the same module in the data erasing process of the burning module 13, the shooting process and the data erasing process can be performed independently. By setting that the first time interval and the second time interval are at least partially overlapped, the shooting process and the data erasing process can be simultaneously carried out in partial time intervals, so that the time consumption of the shooting process and the data erasing process is reduced. When the display panel 2 displays image frames with different Gamma parameters and different gray scales and burns the optical compensation data corresponding to each image frame, the total time consumption of the burning process can be reduced.
The overlapping manner of the first time interval and the second time interval may include that the first time interval covers the second time interval, the second time interval covers the first time interval, or a partial time period of the first time interval is overlapped with a partial time period of the second time interval.
When the first time interval covers the second time interval, the time required by the burning module 13 to erase the data is longer than the time required by the optical shooting module 11 to shoot the image, and the total time consumption of the data erasing process and the shooting process is the first time interval required by the data erasing process.
When the second time interval covers the first time interval, the time for the optical shooting module 11 to shoot the image is longer than the time required by the burning module 13 to erase the data, and the total time consumption of the data erasing process and the shooting process is the second time interval required by the shooting process.
When the partial time period of the first time interval is overlapped with the partial time period of the second time interval, the total time consumption of the data erasing process and the shooting process is the time period obtained by subtracting the overlapping time period from the sum of the first time interval and the second time interval.
When the data erasing process and the shooting process cannot be performed independently, the total time consumption is the sum of the first time interval and the second time interval. In the different overlapping manners of the first time interval and the second time interval, the total consumed time is less than the sum of the first time interval and the second time interval. Namely, the data erasing process and the shooting process are simultaneously carried out in a part of time periods, so that the time consumption of the burning process can be effectively reduced.
It can be understood that, when the optical capturing module 11 captures an image frame, the image frame needs to display an image frame with preset Gamma parameters and preset gray scales. If the time interval during which the display panel 2 displays the image frame is the third time interval, the third time interval at least includes the second time interval, and when the first time interval and the second time interval at least partially overlap, the first time interval and the third time interval also at least partially overlap. That is, the display process of the display panel 2 and the data erase process of the memory chip 20 may be performed simultaneously.
In this embodiment, by setting the burning module 13 to be electrically connected to the memory chip 20 of the display panel 2, when the image control module 10 controls the display panel 2 to display an image picture or the optical shooting module 11 to shoot an image picture, the burning module 13 can perform data erasing on the first storage area in the memory chip 20, and after calculating corresponding optical compensation data according to brightness information of the first picture obtained by shooting, the burning module 13 can burn the optical compensation data to the first storage area where the data erasing has been completed. Because the process of burning record module 13 and the shooting process of optical shooting module 11 to the image picture of erasing process and storage chip 20 can independently go on respectively, need not go on in proper order, there is partial overlap through setting up first time interval and second time interval, can erase process and shooting process simultaneously in overlapping time interval, thereby when display panel 2 shows the image picture, when reducing the total consumption of erasing process and shooting process, reduce display panel 2's Demura burn record time, promote production efficiency.
The Demura recording apparatus 1 may be connected to a PC (Personal Computer) or an upper Computer. The image control module 10 may be a PG (pattern generator), and the PC or the upper computer may control the PG to send a dot screen instruction to the display panel 2, so that the display panel 2 displays an image picture with a preset Gamma parameter and a preset gray scale according to the dot screen instruction. The optical capturing module 11 may be a CCD camera (charge coupled device camera), and when an image frame is displayed, the CCD camera may capture the image frame to obtain first frame luminance information corresponding to each pixel in the image frame. It should be noted that the picture generator PG may also be used as the burning module 13 to perform data erasing and data burning on the memory chip 20. When the picture generator PG simultaneously serves as the image control module 10 and the burning module 13, the display panel 2 can be driven to display the image and the data erasing or data burning can be performed on the memory chip 20.
The Memory chip 20 may be any one of a Flash Memory (Flash IC), a Random Access Memory (RAM), a Synchronous Dynamic Random Access Memory (SDRAM), or a Double Data Rate (DDR).
Referring to fig. 2 and 3, in some embodiments, the Demura recording apparatus 1 may further include a contact socket, the display panel 2 includes a flexible circuit board 21, and the flexible circuit board 21 may be provided with a contact male plug 22. The female contact base is electrically connected to the burning module 13, and when the Demura burning device 1 is electrically connected to the display panel 2 to be burned, the female contact base can be electrically connected to the first end of the male contact 22, and the second end of the male contact 22 is electrically connected to the memory chip 20.
When the Demura recording device 1 is electrically connected to the display panel 2, the recording module 13 can be directly electrically connected to the memory chip 20 by the insertion of the contact socket and the contact pin 22. When the image control module 10 controls the display panel 2 to display a corresponding image, the optical shooting module 11 can shoot the image, and the burning module 13 can erase data of a corresponding storage area in the storage chip 20, so that the shooting process and the data erasing process are independent from each other.
Referring to fig. 4, in some embodiments, the Demura burning apparatus 1 may include a burning probe, a burning contact 23 is disposed on the flexible circuit board 21, and the burning contact 23 is electrically connected to the memory chip 20 through a burning lead 24. The burning probe can contact and electrically connect with the burning contact 23 to electrically connect the burning module 13 with the memory chip 20.
In some embodiments, when the burning module 13 is electrically connected to the memory chip 20, the burning module 13 can communicate with the memory chip 20 through the SPI protocol, so as to erase or burn data from the memory chip 20.
The embodiment of the application also provides a Demura burning method which is applied to the Demura burning device in the embodiment. Fig. 5 shows a flowchart of a Demura burning method according to an embodiment of the present application. The method comprises the following steps:
s510, controlling a display panel to display an image picture under preset Gamma parameters and preset gray scales;
s520, when the display panel displays the image picture, shooting the image picture to obtain corresponding first picture brightness information; the time interval for shooting the image picture is a second time interval;
s530, erasing data in a first storage area of a storage chip of the display panel; the time interval for erasing the data in the first storage area is a first time interval, and the first time interval and the second time interval at least partially overlap;
s540, generating optical compensation data corresponding to the image picture according to the first picture brightness information and a preset compensation algorithm;
s550, burning the optical compensation data to a first storage area of the memory chip.
In this embodiment, when the Demura recording apparatus is connected to the display panel, the display panel may be controlled to display an image frame with preset Gamma parameters and preset gray scales, and the image frame is photographed to obtain first frame brightness information. The device can also erase data of the storage chip of the display panel and burn the calculated optical compensation data corresponding to the image picture into the first storage area in the storage chip. The time interval for erasing the data is a first time interval, and the time interval for shooting the image picture is a second time interval. By setting the first time interval and the second time interval to be at least partially overlapped, burning time can be shortened, and burning efficiency and production efficiency are improved.
In S510, one end of the Demura burn-in device is electrically connected to the display panel, and the other end can be electrically connected to a PC or an upper computer. The PC or the upper computer can control the Demura burning device to perform screen dotting on the display panel so as to enable the display panel to display image pictures with preset Gamma parameters and preset gray scales.
In S520, when the display panel displays an image frame with a preset Gamma parameter and a preset gray scale, the device may capture the image frame to obtain first frame brightness information corresponding to the image frame. The time for capturing the image frame may be the second time interval.
In S530, the device may perform data erasing and data burning on the memory chip of the display panel. During the first time interval, the device can perform data erasing on a first storage area in a storage chip of the display panel.
In the first time interval, the device can erase data of the storage chip; in the second time interval, the device can shoot the image picture displayed by the display panel. There may be at least a partial overlap of the first time interval and the second time interval. That is, in the overlapped time interval, the data erasing process and the shooting process can be performed simultaneously, so as to reduce the time consumption.
In S540, after the image frame is captured and the corresponding first frame luminance information is obtained, compensation calculation may be performed according to a preset compensation algorithm to generate optical compensation data corresponding to each pixel in the image frame.
As an alternative embodiment, referring to fig. 6, the step S540 may include:
s610, determining target brightness data corresponding to each pixel in the display panel according to a preset Gamma parameter and a preset gray scale;
s620, determining actual brightness data corresponding to each pixel in the display panel according to the first picture brightness information;
and S630, calculating and generating optical compensation data corresponding to each pixel according to the target brightness data, the actual brightness data and the preset compensation algorithm corresponding to each pixel.
In this embodiment, the target luminance data that each pixel in the display panel should conform to in the normal state can be determined according to the preset Gamma parameter and the preset gray scale. After the first frame brightness information is obtained by shooting the image frame, the actual brightness data corresponding to each pixel in the display panel can be determined according to the first frame brightness information. According to the actual brightness data and the target brightness data of each pixel, the optical compensation data required by each pixel can be determined through a preset compensation algorithm, so that optical compensation is performed on each pixel according to the corresponding optical compensation data, and the mura phenomenon is eliminated.
In S610, the device may determine target luminance data corresponding to each pixel in the display panel according to the preset Gamma parameter and the preset gray scale.
In S620, after the device obtains the first frame brightness information by capturing the image frame, the device may determine the actual brightness data of each pixel in the display panel without compensation according to the first frame brightness information.
In S630, according to the target luminance data and the actual luminance data respectively corresponding to each pixel, the optical compensation data respectively corresponding to each pixel under the preset Gamma parameter and the preset gray scale may be calculated through a preset compensation algorithm.
It can be understood that after the display panel is controlled to display the image picture under the preset Gamma parameter and the preset gray scale, the optical compensation data corresponding to each pixel under the preset Gamma parameter and the preset gray scale can be calculated and burned into the memory chip of the display panel. By switching different Gamma parameters and different gray scale binding points, optical compensation data corresponding to each pixel under different Gamma parameters and different gray scale binding points can be respectively calculated and sequentially burned into a storage chip, so that the Demura of the display panel is completed. When the display panel displays, corresponding optical compensation data can be read from the storage chip according to Gamma parameters and gray scales corresponding to each pixel, and the driving chip can output compensated data voltage according to the optical compensation data so as to eliminate the mura phenomenon of the display panel and improve the uniformity of the display panel.
In S550, after the optical compensation data is generated and the data in the first storage area is erased, the device may burn the optical compensation data into the first storage area of the memory chip.
As an alternative embodiment, referring to fig. 7, after S550, the method may include:
s710, controlling a driving chip of the display panel to output a compensated data signal according to the optical compensation data in the storage chip so that the display panel displays an image picture which is subjected to optical compensation under a preset Gamma parameter and a preset gray scale;
s720, shooting the image subjected to optical compensation to obtain second image brightness information;
and S730, determining a Demura compensation result according to the second picture brightness information.
In this embodiment, after the optical compensation data of each pixel under the preset Gamma parameter and the preset gray scale are stored in the memory chip, the display panel can be controlled to display the image picture after optical compensation according to the optical compensation data. And shooting the image picture to obtain second picture brightness information corresponding to the compensated image picture. And comparing the compensation brightness data of each pixel in the second picture brightness information with the target brightness data to determine whether the Demura compensation result is successful.
In S710, after the device records the optical compensation data corresponding to the image displayed on the display panel under the preset Gamma parameter and the preset gray scale into the memory chip of the display panel, the device may control the driving chip of the display panel to read the optical compensation data from the memory chip, adjust the signal voltage of the data signal according to the optical compensation data, and output the compensated data signal. At this time, the display panel displays an image picture which is subjected to optical compensation under the preset Gamma parameter and the preset gray scale.
In S720, the apparatus may capture the optically compensated image frame to obtain second frame brightness information corresponding to the image frame.
In S730, the apparatus may determine the result of the Demura compensation according to the second picture brightness information. And determining the actual brightness data of each pixel according to the brightness information of the second picture, and determining that the result of the Demura compensation is successful when the actual brightness data of each pixel is consistent with or close to the target brightness data. When the actual brightness data of each pixel has a large brightness difference with the target brightness data, the result of Demura compensation can be determined as failure.
As an alternative embodiment, referring to fig. 8, the step S730 may include:
s810, determining target brightness data corresponding to each pixel in the display panel according to a preset Gamma parameter and a preset gray scale;
s820, determining compensation brightness data corresponding to each pixel in the display panel according to the second picture brightness information;
and S830, determining that the Demura compensation is finished when the difference value between the compensation brightness data corresponding to each pixel and the target brightness data is smaller than a preset compensation range.
In this embodiment, by obtaining a preset Gamma parameter and target luminance data corresponding to each pixel under a preset gray scale, and determining compensation luminance data corresponding to each pixel from the second image luminance information, the compensation luminance data of each pixel may be compared with the target luminance data, and a luminance difference value of the compensation luminance data may be calculated. When the brightness difference value corresponding to each pixel is smaller than the preset compensation range, it can be determined that the brightness difference between the pixels is small, and the Demura compensation is successful.
In S810, the apparatus may determine target luminance data corresponding to each pixel in the display panel according to the preset Gamma parameter and the preset gray scale.
In S820, after the device captures the optically compensated image frame to obtain the second frame brightness information, the device may determine the compensation brightness data corresponding to each pixel according to the second frame brightness information, where the compensation brightness data is the actual brightness data displayed by each pixel after compensation.
In S830, the apparatus may calculate a difference between the compensated luminance data of each pixel and the target luminance data after determining the compensated luminance data corresponding to each pixel. When the difference between the compensation brightness data and the target brightness data is smaller than the preset compensation range, the result of the Demura compensation can be determined to be successful.
After the Demura compensation, when the display panel displays an image picture under a preset Gamma parameter and a preset gray scale, the actual brightness data of each pixel after the compensation should be close to the target brightness data or consistent with the target brightness data. After the brightness difference value of the compensation brightness data and the target brightness data of each pixel is calculated, if the brightness difference values of all the pixels are within the preset difference value range, the fact that the brightness difference between the pixels after compensation meets factory requirements is shown, and the result of Demura compensation is successful.
It is understood that the factory requirements of different display panels are not the same. For another part of the display panel, the brightness difference value of a part of the pixels is allowed to exceed a preset difference value range. After the brightness difference values corresponding to the pixels are calculated, if the number of the pixels with the brightness difference values exceeding the preset difference value range does not exceed the allowable number of the display panel, it may also be determined that the Demura compensation result is successful.
Accordingly, when the number of pixels with brightness difference values exceeding the preset difference range exceeds the allowable number of the display panel, the result of the Demura compensation can be determined as failure. After determining that the Demura compensation fails, the display panel can be subjected to Demura burning again.
Fig. 9 shows a hardware structure diagram of a Demura burning device provided in an embodiment of the present application.
A burner-on-Demura device may include a processor 901 and a memory 902 having stored computer program instructions.
Specifically, the processor 901 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured to implement one or more Integrated circuits of the embodiments of the present Application.
The memory may include Read Only Memory (ROM), Random Access Memory (RAM), magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical, or other physical/tangible memory storage devices. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software comprising computer-executable instructions and when the software is executed (e.g., by one or more processors), it is operable to perform operations described with reference to the methods according to an aspect of the present disclosure.
The processor 901 reads and executes the computer program instructions stored in the memory 902 to implement any of the Demura burn methods in the above embodiments.
In one example, the Demura burn device may also include a communication interface 903 and a bus 910. As shown in fig. 9, the processor 901, the memory 902, and the communication interface 903 are connected via a bus 910 to complete communication with each other.
The communication interface 903 is mainly used for implementing communication between modules, apparatuses, units and/or devices in this embodiment of the application.
The Demura burning device can be based on the above embodiments, so as to implement the Demura burning method described in fig. 5 to 8.
In addition, in combination with the Demura burning method in the above embodiments, the embodiments of the present application can provide a computer storage medium to implement. The computer storage medium having computer program instructions stored thereon; the computer program instructions, when executed by a processor, implement any of the Demura burn methods of the above embodiments.
It is to be understood that the present application is not limited to the particular arrangements and instrumentality described above and shown in the attached drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions or change the order between the steps after comprehending the spirit of the present application.
The functional blocks shown in the above structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present application are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present application. It should be noted that there are no specific structures in the above description, and it will be apparent to those skilled in the art that various modifications, decorations, or changes can be made without departing from the principle of the present application, and the technical features can be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the present invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (10)
1. A Demura burn device, wherein the Demura burn device is used for burning optical compensation data to a display panel, the Demura burn device comprising:
the image control module is electrically connected with the display panel and is used for controlling the display panel to display an image picture under a preset Gamma parameter and a preset gray scale;
the optical shooting module is used for shooting the image to obtain corresponding first image brightness information;
the compensation data calculation module is used for generating optical compensation data corresponding to the image picture according to first picture brightness information corresponding to the image picture and a preset compensation algorithm;
the burning module is electrically connected with a storage chip of the display panel and is used for erasing data of a first storage area of the storage chip and burning the optical compensation data to the first storage area; and at least partial overlap exists between a first time interval corresponding to the data erasing of the first storage area by the burning module and a second time interval corresponding to the image picture shot by the optical shooting module.
2. The Demura burning device of claim 1, further comprising a female contact socket electrically connected to the burning module, the female contact socket being configured to electrically connect to a first end of a male contact of the display panel, and a second end of the male contact being electrically connected to the memory chip.
3. The Demura burning device of claim 1, comprising burning probes, wherein the burning probes are electrically connected with burning contacts on the display panel, and the burning contacts are electrically connected with the memory chip through burning leads.
4. The Demura burning device of claim 2 or 3, wherein the burning module is in communication connection with the memory chip through an SPI protocol.
5. A Demura burn recording method applied to the Demura burn recording apparatus according to any one of claims 1-4, the method comprising:
controlling the display panel to display an image picture under a preset Gamma parameter and a preset gray scale;
when the display panel displays the image picture, shooting the image picture to obtain corresponding first picture brightness information; the time interval for shooting the image picture is a second time interval;
performing data erasing on a first storage area of a storage chip of the display panel; the time interval for erasing the data of the first storage area is a first time interval, and the first time interval and the second time interval at least partially overlap;
generating optical compensation data corresponding to the image picture according to the first picture brightness information and a preset compensation algorithm;
and burning the optical compensation data to a first storage area of the storage chip.
6. The Demura burn-in method of claim 5, wherein the generating optical compensation data corresponding to the image frame according to the first frame brightness information and a preset compensation algorithm comprises:
determining target brightness data corresponding to each pixel in the display panel according to a preset Gamma parameter and a preset gray scale;
determining actual brightness data corresponding to each pixel in the display panel according to the first picture brightness information;
and calculating and generating optical compensation data corresponding to each pixel according to the target brightness data and the actual brightness data corresponding to each pixel and a preset compensation algorithm.
7. The Demura burn-in method of claim 5, wherein after the burn-in of the optical compensation data to the first storage area of the memory chip, the method further comprises:
controlling a driving chip of the display panel to output a compensated data signal according to the optical compensation data in the storage chip so as to enable the display panel to display an image picture subjected to optical compensation under a preset Gamma parameter and a preset gray scale;
shooting the image subjected to optical compensation to obtain second image brightness information;
and determining a Demura compensation result according to the second picture brightness information.
8. The Demura burn-in method of claim 7, wherein the determining the Demura compensation result according to the second image brightness information comprises:
determining target brightness data corresponding to each pixel in the display panel according to a preset Gamma parameter and a preset gray scale;
determining compensation brightness data corresponding to each pixel in the display panel according to the second picture brightness information;
and when the difference value between the compensation brightness data corresponding to each pixel and the target brightness data is smaller than a preset compensation range, determining that the Demura compensation is successful.
9. A Demura burn device, comprising: a processor and a memory storing computer program instructions;
the processor, when executing the computer program instructions, implements the Demura burn method of any of claims 5-8.
10. A computer storage medium having computer program instructions stored thereon, which when executed by a processor implement the Demura burn recording method of any one of claims 5-8.
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| CN202210364913.6A CN114582276A (en) | 2022-04-08 | 2022-04-08 | Demura burning device, method, equipment and storage medium |
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| CN202210364913.6A CN114582276A (en) | 2022-04-08 | 2022-04-08 | Demura burning device, method, equipment and storage medium |
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