CN114141187A - Mura compensation method, device and system and display equipment - Google Patents
Mura compensation method, device and system and display equipment Download PDFInfo
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Abstract
The application relates to a Mura compensation method, a Mura compensation device, a Mura compensation system and display equipment. The method comprises the following steps: detecting whether a current display panel to be compensated is a first screen or not; according to the detection result, when the current display panel to be compensated is not the first screen, acquiring historical picture compensation data of the previous screen; according to the historical picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel; acquiring first shooting data of a display picture of a first-time compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data; and carrying out Mura compensation on the first compensation display panel according to the first picture compensation data. Mura compensation of the display panel to be compensated is realized, and the compensation operation time of the 2Cycle Demura mode is reduced on the basis of improving the image quality of the 1Cycle Demura compensation mode.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a Mura compensation method, apparatus, system, and display device.
Background
With the development of display technology, display panels are widely used in electronic devices such as televisions, computers, smart phones, and the like. With the pursuit of display quality and display practicability, display panels have been developed to have higher density, higher resolution, lower power consumption, higher brightness, higher color, and the like. In the production process of the display panel, the brightness of the display panel is not uniform due to some problems such as process defects, and various Mura are formed.
In the prior art, a 1Cycle Demura (one-Cycle brightness non-uniformity compensation) mode is usually adopted to compensate and eliminate the Mura of the display panel, however, the compensation image quality adopting the 1Cycle Demura mode is poor, and the Mura is difficult to completely eliminate; on the other hand, the 2Cycle Demura (two-Cycle brightness non-uniformity compensation) method is adopted to compensate and eliminate the Mura of the display panel, and although the problem of poor compensation image quality can be improved, the Mura compensation time is long, and the compensation efficiency is low.
Disclosure of Invention
Therefore, the conventional 1Cycle Demura method is needed to compensate and eliminate the Mura of the display panel, so that the problems of poor compensation image quality and difficulty in completely eliminating the Mura exist; the Mura compensation method, the device, the system and the display equipment can improve the compensation image quality, reduce the Mura compensation time and improve the compensation efficiency.
In a first aspect, the present application provides a Mura compensation method, including:
detecting whether a current display panel to be compensated is a first screen or not;
according to the detection result, when the current display panel to be compensated is not the first screen, acquiring historical picture compensation data of the previous screen;
according to the historical picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel;
acquiring first shooting data of a display picture of a first-time compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data;
and carrying out Mura compensation on the first compensation display panel according to the first picture compensation data.
Optionally, after the step of detecting whether the current display panel to be compensated is the first screen, the method includes:
when the current display panel to be compensated is a first screen, acquiring second shooting data of a display picture of the current display panel to be compensated in a preset gray scale; obtaining second picture compensation data corresponding to the current display panel to be compensated according to the second shooting data;
and according to the second picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel.
Optionally, according to the detection result, before the step of obtaining the historical picture compensation data of the previous screen when the current display panel to be compensated is not the first screen, the method includes:
acquiring the detection sequence information of the current display panel to be compensated; wherein, the detection sequence information comprises first detection information and non-first detection information;
and when the detection sequence information is non-first detection information, determining that the current display panel to be compensated is a non-first screen.
Optionally, after the step of obtaining the first picture compensation data corresponding to the first compensation display panel according to the first shooting data, the method includes:
and storing the first picture compensation data in a database, and updating the historical picture compensation data of the previous screen into the first picture compensation data.
Optionally, according to the detection result, before the step of obtaining the historical picture compensation data of the previous screen when the current display panel to be compensated is not the first screen, the method includes:
and when the historical picture compensation data of the previous screen in the database is inquired, determining that the current display panel to be compensated is a non-first screen.
Optionally, the step of obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data includes:
processing the first shooting data to obtain first Mura data;
and processing the first Mura data based on a Demura compensation algorithm to obtain first picture compensation data.
In a second aspect, the present application provides a Mura compensation apparatus comprising:
the device comprises a screen sequence detection unit, a compensation unit and a control unit, wherein the screen sequence detection unit is used for detecting whether a current display panel to be compensated is a first screen;
the historical data acquisition unit is used for acquiring historical picture compensation data of a previous screen when the current display panel to be compensated is not a first screen according to the detection result;
the historical data processing unit is used for carrying out Mura compensation on the current display panel to be compensated according to the historical picture compensation data to obtain a first compensation display panel;
the first compensation data acquisition unit is used for acquiring first shooting data of a display picture of a first compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data;
and the Mura compensation unit is used for performing Mura compensation on the first compensation display panel according to the first picture compensation data.
In a third aspect, the present application provides a Mura compensation system, including a controller for connecting a display panel to be compensated; the controller is configured to perform the steps of any of the Mura compensation methods described above.
Optionally, the Mura compensation system further includes a camera device; the camera device is connected with the controller; the image pickup device is configured to shoot a display picture of the first compensation display panel at a preset gray scale, and first shooting data are obtained.
In a fourth aspect, the present application provides a display device comprising a display panel and a Mura compensation system as described above; the Mura compensation system is connected to the display panel.
One of the above technical solutions has the following advantages and beneficial effects:
in the Mura compensation method, whether the current display panel to be compensated is the first screen is detected; according to the detection result, when the current display panel to be compensated is not the first screen, acquiring historical picture compensation data of the previous screen; according to the historical picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel; acquiring first shooting data of a display picture of a first-time compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data; and carrying out Mura compensation on the first compensation display panel according to the first picture compensation data. Mura compensation of the display panel to be compensated is realized, and the compensation operation time of the 2Cycle Demura mode is reduced on the basis of improving the image quality of the 1Cycle Demura compensation mode. This application is through judging whether present waiting to compensate display panel is first piece of screen, if not, uses the historical picture compensation data of last piece of screen, directly carries out the Mura compensation, then carries out the Demura compensation operation again, and then has promoted the compensation image quality, has reduced the Mura compensation time simultaneously, has improved compensation efficiency.
Drawings
Fig. 1 is an application environment diagram of a Mura compensation method in an embodiment of the present application.
Fig. 2 is a schematic diagram of a first process of the Mura compensation method in the embodiment of the present application.
FIG. 3 is a second flow chart of the Mura compensation method in the embodiment of the present application.
Fig. 4 is a flowchart illustrating a step of detecting a screen order in an embodiment of the present application.
Fig. 5 is a block diagram of a Mura compensation apparatus according to an embodiment of the present application.
Fig. 6 is an internal structural diagram of a Mura compensation system in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The Mura compensation method provided by the application can be applied to the application environment shown in FIG. 1. The display device includes a display panel 102 and a controller 104, where the controller 104 may be configured to detect whether a current display panel to be compensated is a first screen; according to the detection result, when the current display panel to be compensated is not the first screen, acquiring historical picture compensation data of the previous screen; according to the historical picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel; acquiring first shooting data of a display picture of a first-time compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data; and carrying out Mura compensation on the first compensation display panel according to the first picture compensation data. The display panel may be, but is not limited to, an AMOLED display panel, an AM Micro LED display panel, an AM Mini LED display panel, or an LCD display panel.
In one embodiment, as shown in fig. 2, a Mura compensation method is provided, which is illustrated by applying the method to the controller 104 in fig. 1, and includes:
step S210, detecting whether the current display panel to be compensated is the first screen.
The current display panel to be compensated may be, but is not limited to, an AMOLED display panel, an AM Micro LED display panel, an AM Mini LED display panel, or an LCD display panel. The first screen refers to a display panel which carries out Demura compensation processing after the system is powered on and started. For example, after the system is powered on and started, Demura compensation processing can be performed on a plurality of display panels to be compensated in the same batch, a display panel to be compensated, which enters the system for Demura compensation processing first, is identified as a first screen, a display panel to be compensated, which enters the system for Demura compensation processing second, is identified as a second screen, and so on, and a display panel to be compensated, which enters the system for the nth, is identified as an nth screen (where N is a positive integer).
In one example, after the controller is connected to the current display panel to be compensated, the controller may detect a historical compensation record in the database, check whether a corresponding batch of display panels to be compensated corresponding to the current display panel to be compensated has completed Demura compensation processing, and further determine whether the current display panel to be compensated is the first screen.
Step S220, according to the detection result, when the current display panel to be compensated is not the first screen, obtaining the historical picture compensation data of the previous screen.
The non-first screen refers to a display panel which is subjected to Demura compensation processing by a second screen, a third screen or an Nth screen after the system is powered on and started. For example, after the system is powered on and started, Demura compensation processing can be performed on a plurality of display panels to be compensated in the same batch, a display panel to be compensated, which enters the system for Demura compensation processing first, is identified as a first screen, a display panel to be compensated, which enters the system for Demura compensation processing second, is identified as a second screen, and so on, and a display panel to be compensated, which enters the system for Demura compensation processing nth, is identified as an nth screen (where N is a positive integer greater than 2). I.e., the second screen, the third screen, or the nth screen, to which the non-first screen refers. For example, if the current display panel to be compensated is the second screen, the last screen corresponding to the current display panel to be compensated is the first screen; and if the current display panel to be compensated is the Nth screen, the last screen corresponding to the current display panel to be compensated is the (N-1) th screen.
In one example, the controller detects whether the current display panel to be compensated is a first screen, and acquires historical picture compensation data of a previous screen of the current display panel to be compensated according to a detection result when the current display panel to be compensated is not the first screen.
And step S230, performing Mura compensation on the current display panel to be compensated according to the historical picture compensation data to obtain a first compensation display panel.
The historical picture compensation data refers to Demura data corresponding to a previous screen. Illustratively, when detecting that the current display panel to be compensated is not a first screen, the controller acquires Demura data of the corresponding previous screen, and directly burns the Demura data into a Flash ROM, so as to realize first-time Mura compensation of the current display panel to be compensated and reduce compensation time of the first-time Mura compensation. The first compensation display panel refers to the display panel to be compensated after the first Mura compensation.
Step S240, collecting first shooting data of a display picture of a first compensation display panel in a preset gray level; and obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data.
The display picture with the preset gray scale can be selected in advance to be input into the first compensation display panel for display, then the picture displayed by the first compensation display panel is shot through the camera device, and then the controller can acquire first shooting data of the first compensation display panel on the display picture with the preset gray scale. The controller can process the first shooting data according to the collected first shooting data to obtain first picture compensation data corresponding to the first compensation display panel. Wherein, the first picture compensation data is corresponding Demura data. The first shot data is image data.
Illustratively, the image pickup device may employ a high-resolution and high-precision CCD camera. Then, the picture displayed by the first compensation display panel is shot through the CCD camera, and then the controller can acquire first shooting data of the display picture of the first compensation display panel in the preset gray level. The controller can process the first shooting data according to the collected first shooting data to obtain first picture compensation data corresponding to the first compensation display panel.
Step S250, performing Mura compensation on the first compensation display panel according to the first picture compensation data.
The controller can directly burn the first picture compensation data into the Flash ROM according to the first picture compensation data obtained by processing, so that second Mura compensation of the current display panel to be compensated is realized, the compensation time of the first Mura compensation is further reduced, and the picture quality of the compensation display picture is improved.
In the embodiment, whether the current display panel to be compensated is the first screen is detected; according to the detection result, when the current display panel to be compensated is not the first screen, acquiring historical picture compensation data of the previous screen; according to the historical picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel; acquiring first shooting data of a display picture of a first-time compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data; and carrying out Mura compensation on the first compensation display panel according to the first picture compensation data. Mura compensation of the display panel to be compensated is realized, and the compensation operation time of the 2Cycle Demura mode is reduced on the basis of improving the image quality of the 1Cycle Demura compensation mode. Whether the current display panel to be compensated is the first screen or not is judged, if not, historical picture compensation data of the last screen is used, Mura compensation is directly carried out, then Demura compensation operation is carried out, then compensation image quality is improved, Mura compensation time is shortened, and compensation efficiency is improved.
In one embodiment, as shown in fig. 3, a Mura compensation method is provided, which is illustrated by applying the method to the controller 104 in fig. 1, and includes:
step S310, detecting whether the current display panel to be compensated is the first screen.
Step S320, when the current display panel to be compensated is a first screen, collecting second shooting data of a display picture of the current display panel to be compensated in a preset gray scale; obtaining second picture compensation data corresponding to the current display panel to be compensated according to the second shooting data;
wherein, the second picture compensation data is corresponding Demura data. The second shot data is corresponding image data.
When the controller detects that the current display panel to be compensated is the first screen, a display picture with preset gray scale can be selected in advance to be input into the current display panel to be compensated for display, then the picture displayed by the current display panel to be compensated is shot through the camera device, and then the controller can acquire second shooting data of the current display panel to be compensated in the display picture with the preset gray scale. The controller can process the second shooting data according to the second shooting data obtained by collection to obtain second picture compensation data corresponding to the current display panel to be compensated.
Illustratively, the image pickup device may employ a high-resolution and high-precision CCD camera. Then, the CCD camera shoots the picture displayed by the current display panel to be compensated, and then the controller can acquire and obtain second shooting data of the display picture of the current display panel to be compensated in the preset gray level. The controller can process the second shooting data according to the second shooting data obtained by collection to obtain second picture compensation data corresponding to the current display panel to be compensated.
And step S330, according to the second picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel.
The controller can directly burn the second picture compensation data into the Flash ROM according to the second picture compensation data obtained by processing, so that the first Mura compensation of the current display panel to be compensated is realized when the current display panel to be compensated is the first screen.
Step S340, according to the detection result, when the current display panel to be compensated is not the first screen, obtaining the historical picture compensation data of the previous screen.
And step S350, performing Mura compensation on the current display panel to be compensated according to the historical picture compensation data to obtain a first compensation display panel.
S360, collecting first shooting data of a display picture of a first compensation display panel at a preset gray level; and obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data.
Step S370, performing Mura compensation on the first compensation display panel according to the first picture compensation data.
The specific content processes of the steps S310, S340, S350, S360 and S370 may refer to the above contents, and are not described herein again.
In the embodiment, whether the current display panel to be compensated is the first screen is detected; according to the detection result, when the current display panel to be compensated is a first screen, acquiring second shooting data of a display picture of the current display panel to be compensated at a preset gray level; obtaining second picture compensation data corresponding to the current display panel to be compensated according to the second shooting data; according to the second picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel; when the current display panel to be compensated is not a first screen, acquiring historical picture compensation data of the previous screen; according to the historical picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel; acquiring first shooting data of a display picture of a first-time compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data; and carrying out Mura compensation on the first compensation display panel according to the first picture compensation data. Mura compensation of the display panel to be compensated is realized, and the compensation operation time of the 2Cycle Demura mode is reduced on the basis of improving the image quality of the 1Cycle Demura compensation mode. Judging whether the current display panel to be compensated is a first screen, if so, performing 2 rounds of Demura compensation operation; if not, the historical picture compensation data of the previous screen is used, Mura compensation is directly carried out, and then the Demura compensation operation is carried out, so that the compensation image quality is improved, the Mura compensation time is reduced, and the compensation efficiency is improved.
In one example, as shown in fig. 4, according to the detection result, before the step of obtaining the historical picture compensation data of the previous screen when the current display panel to be compensated is not the first screen, the method includes:
step S410, acquiring the current detection sequence information of the display panel to be compensated; wherein the detection sequence information includes first detection information and non-first detection information.
The display panels to be compensated in the same batch can be sorted in advance, and corresponding detection sequence information is input. For example, the detection sequence information of the display panel to be compensated corresponding to the first screen is 0001, the detection sequence information of the display panel to be compensated corresponding to the second screen is 0002, and so on, the detection sequence information of the display panel to be compensated corresponding to the nth screen is 0000N. Wherein N is a positive integer greater than 2. The first detection information refers to detection order information (e.g., 0001) of the display panel to be compensated corresponding to the first screen, and the non-first detection information refers to detection order information (e.g., 0002, 0003, 000N) of the display panel to be compensated corresponding to the second screen, the third screen, or the nth screen.
In step S420, when the detection sequence information is the non-first detection information, it is determined that the current display panel to be compensated is a non-first screen.
The controller can process the acquired detection sequence information, and according to the processing result, when the detection sequence information is non-first detection information, the current display panel to be compensated is determined to be a non-first screen. For example, if the detection sequence information is 0002, 0003, or 000N, it is determined that the detection sequence information is non-first detection information, and it is determined that the current display panel to be compensated is a non-first screen. And if the detection sequence information is 0001, judging that the detection sequence information is first detection information, and determining that the current display panel to be compensated is a first screen.
In one example, the step of obtaining first picture compensation data corresponding to the first compensation display panel based on the first shot data comprises:
and storing the first picture compensation data in a database, and updating the historical picture compensation data of the previous screen into the first picture compensation data.
Wherein a database may be used to store historical picture compensation data. And the controller updates the historical picture compensation data of the previous picture in the database into first picture compensation data according to the processed first picture compensation data.
Illustratively, after the Mura compensation of all the display panels to be compensated in the same batch is completed, the historical picture compensation data in the database is emptied.
In one example, according to the detection result, before the step of obtaining the historical picture compensation data of the previous screen when the current display panel to be compensated is not the first screen, the method includes:
and when the historical picture compensation data of the previous screen in the database is inquired, determining that the current display panel to be compensated is a non-first screen.
For example, the controller may determine whether the current display panel to be compensated is the first screen by querying whether historical picture compensation data of the corresponding previous screen exists in the database. And when the controller inquires that the historical picture compensation data of the corresponding previous screen exists in the database, the controller confirms that the current display panel to be compensated is a non-first screen. If the controller does not inquire corresponding historical picture compensation data, determining that the current display panel to be compensated is a first screen, and further quickly judging whether the current display panel to be compensated is a non-first screen, wherein when the current display panel to be compensated is the non-first screen, the current display panel to be compensated uses the historical compensation picture data of the previous screen (namely, the Demura data processed by adopting a 2Cycle Demura mode), and the historical compensation picture data is directly burnt into a Flash ROM for first-time Mura compensation; and then performing the Demura operation again to perform the second-time Mura compensation, thereby reducing the compensation time of the 2Cycle Demura mode while realizing the improvement of the image quality and improving the picture compensation efficiency.
In one example, the obtaining of the first picture compensation data corresponding to the first compensation display panel based on the first photographing data includes:
processing the first shooting data to obtain first Mura data; and processing the first Mura data based on a Demura compensation algorithm to obtain first picture compensation data.
The controller can process the acquired first shooting data to further obtain first Mura data. For example, the controller may perform pixel color distribution feature analysis on the first captured data to obtain image feature information, and perform corresponding Mura detection algorithm processing on the image feature information to obtain the first Mura data. The controller carries out corresponding Demura compensation algorithm processing on the first Mura data according to the acquired first Mura data to further obtain first picture compensation data, and burns the first picture compensation data into a Flash ROM to carry out second-time Mura compensation, so that the image quality is improved, the compensation time of a 2Cycle Demura mode is reduced, and the picture compensation efficiency is improved.
It should be understood that although the various steps in the flow charts of fig. 2-4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-4 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 5, there is provided a Mura compensation apparatus including:
a screen order detecting unit 510, configured to detect whether the current display panel to be compensated is a first screen.
A historical data obtaining unit 520, configured to obtain, according to the detection result, historical picture compensation data of a previous screen when the current display panel to be compensated is not the first screen.
And the historical data processing unit 530 is configured to perform Mura compensation on the current display panel to be compensated according to the historical picture compensation data, so as to obtain a first compensation display panel.
A first compensation data acquiring unit 540, configured to acquire first shooting data of a display picture of the first compensation display panel at a preset gray level; and obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data.
A Mura compensation unit 550, configured to perform Mura compensation on the first compensated display panel according to the first picture compensation data.
In one example, the Mura compensation apparatus is further configured to: when the current display panel to be compensated is a first screen, acquiring second shooting data of a display picture of the current display panel to be compensated in a preset gray scale; obtaining second picture compensation data corresponding to the current display panel to be compensated according to the second shooting data; and according to the second picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel.
In one example, the Mura compensation apparatus is further configured to: acquiring the detection sequence information of the current display panel to be compensated; wherein, the detection sequence information comprises first detection information and non-first detection information; and when the detection sequence information is non-first detection information, determining that the current display panel to be compensated is a non-first screen.
In one example, the Mura compensation apparatus is further configured to: and storing the first picture compensation data in a database, and updating the historical picture compensation data of the previous screen into the first picture compensation data.
In one example, the Mura compensation apparatus is further configured to: and when the historical picture compensation data of the previous screen in the database is inquired, determining that the current display panel to be compensated is a non-first screen.
In one example, the first compensation data obtaining unit is further configured to: processing the first shooting data to obtain first Mura data; and processing the first Mura data based on a Demura compensation algorithm to obtain first picture compensation data.
For specific limitations of the Mura compensation apparatus, reference may be made to the above limitations of the Mura compensation method, which are not described herein again. The various modules in the Mura compensation apparatus described above may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a controller in the Mura compensation system in a hardware form or independent of the controller in the Mura compensation system, and can also be stored in a memory in the Mura compensation system in a software form, so that the controller can call and execute operations corresponding to the modules.
In one embodiment, a Mura compensation system is provided, the Mura compensation system comprising a controller for connecting a display panel to be compensated; the controller is configured to perform the steps of any of the Mura compensation methods described above.
In one example, the controller, when executing the computer program, may implement the steps of:
detecting whether a current display panel to be compensated is a first screen or not; according to the detection result, when the current display panel to be compensated is not the first screen, acquiring historical picture compensation data of the previous screen; according to the historical picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel; acquiring first shooting data of a display picture of a first-time compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data; and carrying out Mura compensation on the first compensation display panel according to the first picture compensation data.
In the above embodiment, the controller detects whether the current display panel to be compensated is the first screen; according to the detection result, when the current display panel to be compensated is not the first screen, acquiring historical picture compensation data of the previous screen; according to the historical picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel; acquiring first shooting data of a display picture of a first-time compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data; and carrying out Mura compensation on the first compensation display panel according to the first picture compensation data. Mura compensation of the display panel to be compensated is realized, and the compensation operation time of the 2Cycle Demura mode is reduced on the basis of improving the image quality of the 1Cycle Demura compensation mode. Whether the current display panel to be compensated is the first screen or not is judged, if not, historical picture compensation data of the last screen is used, Mura compensation is directly carried out, then Demura compensation operation is carried out, then compensation image quality is improved, Mura compensation time is shortened, and compensation efficiency is improved.
In one example, the Mura compensation system further includes an image capture device; the camera device is connected with the controller; the image pickup device is configured to shoot a display picture of the first compensation display panel at a preset gray scale, and first shooting data are obtained.
The image pickup device may be a CCD camera, among others. The camera device can also be used for shooting a display picture of the current display panel to be compensated in a preset gray scale to obtain second shooting data. The display panel to be compensated may be, but is not limited to, an AMOLED display panel, an AM Micro LED display panel, an AM Mini LED display panel, or an LCD display panel.
In one embodiment, there is provided a display device comprising a display panel and a Mura compensation system as described above; the Mura compensation system is connected to the display panel.
The display device may be, but is not limited to, various AMOLED display devices, AM Micro LED display devices, AM Mini LED display devices, or LCD display devices. The internal structure of the display device may be as shown in fig. 6. The display device includes a Mura compensation system and a display panel. The Mura compensation system comprises a controller and a memory which are connected through a system bus; the display panel may further include a network interface and an input device. Wherein the controller of the Mura compensation system is configured to provide computational and control capabilities. The memory of the Mura compensation system comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the display panel is used for connecting and communicating with an external terminal through a network. The computer program is executed by a processor to implement a Mura compensation method. The display panel may be, but is not limited to, an AMOLED display panel, an AM Micro LED display panel, an AM Mini LED display panel, or an LCD display panel.
It will be appreciated by those skilled in the art that the configuration shown in fig. 6 is a block diagram of only a portion of the configuration relevant to the present application, and does not constitute a limitation on the display device to which the present application is applied, and a particular display device may include more or less components than those shown in the drawings, or combine certain components, or have a different arrangement of components.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
detecting whether a current display panel to be compensated is a first screen or not; according to the detection result, when the current display panel to be compensated is not the first screen, acquiring historical picture compensation data of the previous screen; according to the historical picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel; acquiring first shooting data of a display picture of a first-time compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data; and carrying out Mura compensation on the first compensation display panel according to the first picture compensation data.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A Mura compensation method, comprising:
detecting whether a current display panel to be compensated is a first screen or not;
according to the detection result, when the current display panel to be compensated is not the first screen, acquiring historical picture compensation data of the previous screen;
according to the historical picture compensation data, carrying out Mura compensation on the current display panel to be compensated to obtain a first compensation display panel;
acquiring first shooting data of a display picture of the first compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data;
and carrying out Mura compensation on the first compensation display panel according to the first picture compensation data.
2. The Mura compensation method of claim 1, wherein the step of detecting whether the current display panel to be compensated is the first screen comprises:
when the current display panel to be compensated is a first screen, acquiring second shooting data of a display picture of the current display panel to be compensated in a preset gray scale; obtaining second picture compensation data corresponding to the current display panel to be compensated according to the second shooting data;
and performing Mura compensation on the current display panel to be compensated according to the second picture compensation data to obtain the first compensation display panel.
3. The Mura compensation method of claim 1, wherein before the step of obtaining the historical picture compensation data of the previous screen when the current display panel to be compensated is not the first screen according to the detection result, the method comprises:
acquiring the detection sequence information of the current display panel to be compensated; wherein the detection sequence information includes first detection information and non-first detection information;
and when the detection sequence information is non-first detection information, determining that the current display panel to be compensated is a non-first screen.
4. The Mura compensation method of claim 1, wherein the step of obtaining first picture compensation data corresponding to the first compensated display panel according to the first shot data comprises:
and storing the first picture compensation data in a database, and updating the historical picture compensation data of the previous screen into the first picture compensation data.
5. The Mura compensation method of claim 4, wherein before the step of obtaining the historical picture compensation data of the previous screen when the current display panel to be compensated is not the first screen according to the detection result, the method comprises:
and when the historical picture compensation data of the previous screen in the database is inquired, determining that the current display panel to be compensated is a non-first screen.
6. The Mura compensation method of claim 1, wherein the step of obtaining the first picture compensation data corresponding to the first compensated display panel according to the first shot data comprises:
processing the first shooting data to obtain first Mura data;
and processing the first Mura data based on a Demura compensation algorithm to obtain the first picture compensation data.
7. A Mura compensation apparatus, comprising:
the device comprises a screen sequence detection unit, a compensation unit and a control unit, wherein the screen sequence detection unit is used for detecting whether a current display panel to be compensated is a first screen;
the historical data acquisition unit is used for acquiring historical picture compensation data of a previous screen when the current display panel to be compensated is not a first screen according to the detection result;
the historical data processing unit is used for carrying out Mura compensation on the current display panel to be compensated according to the historical picture compensation data to obtain a first compensation display panel;
the first compensation data acquisition unit is used for acquiring first shooting data of a display picture of the first compensation display panel at a preset gray level; obtaining first picture compensation data corresponding to the first compensation display panel according to the first shooting data;
and the Mura compensation unit is used for performing Mura compensation on the first compensation display panel according to the first picture compensation data.
8. A Mura compensation system is characterized by comprising a controller used for connecting a display panel to be compensated; the controller is configured to perform the steps of the Mura compensation method of any of claims 1 to 6.
9. A Mura compensation system according to claim 8 further comprising a camera device; the camera device is connected with the controller; the camera device is configured to shoot a display picture of the first compensation display panel at a preset gray level, and the first shot data is obtained.
10. A display device comprising a display panel and a Mura compensation system as claimed in claim 8 or 9;
the Mura compensation system is connected with the display panel.
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