CN113299237B - Display panel control method and device, electronic equipment and storage medium - Google Patents
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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Abstract
The application provides a control method and device of a display panel, electronic equipment and a storage medium, and relates to the field of display control. The method comprises the following steps: acquiring the brightness of target display data and the loading state of a display panel; for each pixel used for displaying the target display data on the display panel, searching a target gray scale corresponding to the target brightness and the display panel loading state according to a predetermined mapping relation among the brightness, the display panel loading state and the target gray scale; and regulating and controlling the display panel according to the target gray scale of each pixel. The problem that the gray scale efficiency of the current regulation and control display panel is low can be solved.
Description
Technical Field
The present disclosure relates to the field of display control, and in particular, to a method and an apparatus for controlling a display panel, an electronic device, and a storage medium.
Background
Generally, the voltage drop of the display panel is calculated by the IRC algorithm, and the display panel is controlled and compensated according to the voltage drop, but the method of calculating the voltage drop is limited by the size of the IC hardware, and can only be used in a simple circuit model. The current on the display panel is designed to be allowed to flow from all directions, so that the complex circuit cannot be subjected to circuit simulation by calculating the voltage drop so as to compensate the brightness of the display panel, and the problem of low efficiency of regulating and controlling the gray scale of the display panel exists.
Disclosure of Invention
In view of the above, embodiments of the present disclosure provide a method and an apparatus for controlling a display panel, an electronic device, and a storage medium, so as to solve the problem of low efficiency of adjusting and controlling gray scales of a display panel.
In a first aspect, an embodiment of the present application provides a control method for a display panel, including:
and acquiring the target brightness of the target display data and the loading state of the display panel.
And searching a target gray scale corresponding to the target brightness and the loading state of the display panel according to a predetermined mapping relation among the target brightness, the loading state of the display panel and the target gray scale for each pixel used for displaying the target display data on the display panel.
And regulating the display panel according to the target gray scale of each pixel.
In the implementation process, the target brightness of each gray scale of the display data is stored in the predetermined mapping relation, when the display panel is determined to have brightness unevenness or color cast abnormity and the display panel needs to be controlled and optically compensated, the target brightness and the panel loading state of the display data are acquired, the target gray scale corresponding to the current display data is found in the predetermined mapping relation, the gray scale of each pixel on the display panel is regulated according to the found target gray scale, and the optical compensation is performed on the display panel, so that the problem that the control and compensation efficiency of the display panel is low at present can be solved.
Optionally, before the obtaining the target brightness of the target display data and the loading state of the display panel, the method may include:
and establishing a brightness model of the display panel, wherein the brightness, the panel loading state and the gray scale in the brightness model correspond to each other one by one.
And substituting a plurality of training display data into the brightness model to establish the mapping relation between the pixels of the display panel and the target gray scales corresponding to different brightnesses and different panel loading states.
In the implementation process, a plurality of training display data are substituted into the brightness model, so that the mapping relation between each brightness, the panel loading state and the target gray scale can be completely established, and when the display panel is regulated, the target gray scale corresponding to each pixel on the display panel under the current brightness only needs to be found, so that the target gray scale corresponding to each pixel can be quickly found, and the efficiency of regulating and controlling the display panel can be improved.
Optionally, the mapping relationship may be stored in a database, and the brightness, the panel loading state, and the gray scale are represented by three coordinate axes using a three-dimensional graph.
In the implementation process, the mapping relation is stored in the database, and the mapping relation of the brightness, the panel loading state and the gray scale is represented in a three-dimensional chart mode, so that the efficiency of searching the target gray scale can be improved.
Optionally, the obtaining the loading state of the display panel may include:
and calculating the value of a loading index according to the ratio of the gray scale of an input image to the resolution of the display panel, the gamma value of the display panel and the current ratio between the red/green/blue pixels, and weighing the loading state of the display panel according to the value of the loading index.
In the implementation process, the total current of the display panel is calculated to serve as the loading index so as to represent the current loading state of the display panel, the loading state of the display panel can be changed along with the change of display data, the display panel can be switched on and off for each pixel through carrier injection and recombination under the driving of an electric field, and the quantity of carriers can influence the magnitude of the current, so that the loading state of the display panel can be accurately quantized by calculating the value of the loading index, and the accuracy of regulation and control of the display panel is improved.
Optionally, the calculating a value of the loading index according to a ratio of a gray scale of the input image to a resolution of the display panel and a current ratio between the red/green/blue pixels includes:
and calculating the loading index according to a loading index calculation formula.
The load index calculation formula comprises:
wherein, OPR represents the loading index, R _ data, G _ data and B _ data represent the gray scale of the input image, W and H represent the resolution of the display panel, R _ ratio, G _ ratio and B _ ratio represent the current ratio among average red, green and blue pixels, and x is the gamma value of the display panel.
In the implementation process, the gray scale of an input image, the resolution of the display panel and the influence of the current ratio between average red/green/blue pixels on the loading state of the display panel can be considered through the loading index calculation formula, so that the loading state of the display panel can be accurately quantized by calculating the value of the loading index, and the accuracy of regulation and control on the display panel is improved.
Optionally, the adjusting and controlling the display panel according to the target gray scale of each pixel includes:
and calculating the voltage drop of each position of the display panel in a preset calculation mode.
And regulating the display panel according to the voltage drop and the target gray scale.
In the implementation process, the voltage drop of the corresponding position of the circuit with a simpler circuit on the display panel can be calculated, the display panel is compensated according to the voltage drop, and the target gray scale is searched in the three-dimensional graph and the display panel is regulated and controlled for the pixel of the corresponding position of the circuit with a more complex circuit on the display panel. Therefore, the efficiency of regulation and control can be improved by regulating and controlling the display panel in two parallel modes.
In a second aspect, an embodiment of the present application provides a control apparatus for a display panel, the apparatus including:
and the data acquisition module is used for acquiring the brightness of the target display data and the loading state of the display panel.
And the query module is used for searching a target gray scale corresponding to the target brightness and the loading state of the display panel according to the predetermined mapping relation among the brightness, the loading state of the display panel and the target gray scale for each pixel used for displaying the target display data on the display panel.
And the control module is used for regulating and controlling the display panel according to the target gray scale of each pixel.
Therefore, through the device, the target brightness of each gray scale of the display data is stored in the predetermined mapping relation, when the display panel is determined to have brightness unevenness or color cast abnormity and the display panel needs to be controlled and optically compensated, the target brightness of the display data and the panel loading state are obtained through the data obtaining module, the target gray scale corresponding to the current display data is found in the predetermined mapping relation through the query module, the control module regulates and controls the gray scale of each pixel on the display panel according to the found target gray scale and optically compensates the display panel, and therefore the problems that the efficiency and the accuracy of controlling and compensating the display panel are low at present can be solved.
Optionally, the apparatus may further include:
and the model establishing module is used for establishing a brightness model of the display panel, and the brightness, the panel loading state and the gray scale in the brightness model are in one-to-one correspondence.
And the database establishing module is used for substituting a plurality of training display data into the brightness model and establishing the mapping relation between the pixels of the display panel and target gray scales corresponding to different brightness and different panel loading states.
Therefore, the model building module of the device substitutes a plurality of training display data into the brightness model, the mapping relation between each brightness and the loading state of the panel and the target gray scale can be completely built, and when the display panel is regulated, the target gray scale corresponding to each pixel on the display panel under the current brightness only needs to be found through the mapping module, so that the target gray scale corresponding to each pixel can be quickly found, and the efficiency of regulating the display panel can be improved.
Optionally, the mapping relationship is stored in a database, and a three-dimensional graph is used to represent brightness, a panel loading state, and a gray scale with three coordinate axes.
Therefore, the mapping relation is stored in the database, the mapping relation of the brightness, the panel loading state and the gray scale is expressed in a three-dimensional graph mode, and the efficiency of searching the target gray scale can be improved.
Optionally, the data obtaining module may be further configured to:
and calculating the value of a loading index according to the ratio of the gray scale of an input image to the resolution of the display panel, the gamma value of the display panel and the current ratio between the red/green/blue pixels, and weighing the loading state of the display panel according to the value of the loading index.
Therefore, the total current of the display panel is calculated to serve as the loading index so as to represent the current loading state of the display panel, the loading state of the display panel can be changed along with the change of display data, the display panel can be switched on and off each pixel through carrier injection and recombination under the driving of an electric field, and the quantity of carriers can influence the magnitude of the current, so that the loading state of the display panel can be accurately quantized by calculating the value of the loading index through the data acquisition module, and the accuracy of regulation and control of the display panel is improved.
Optionally, the apparatus may further include:
and the calculating module is used for calculating the voltage drop of each position of the display panel in a preset calculating mode.
And the second control module is used for regulating and controlling the display panel according to the voltage drop and the target gray scale.
Therefore, the voltage drop of the corresponding position of the circuit with a simpler circuit on the display panel can be calculated through the calculation module, the second control module compensates the display panel according to the voltage drop, and the target gray scale is searched in the three-dimensional graph and the display panel is regulated and controlled for the pixel of the corresponding position of the circuit with a more complex circuit on the display panel. Therefore, the efficiency of regulation and control can be improved by regulating and controlling the display panel in two parallel modes.
In a third aspect, an embodiment of the present application provides an electronic device, which includes a memory and a processor, where the memory stores program instructions, and the processor executes the steps in the foregoing method when reading and executing the program instructions.
In a fourth aspect, the present application provides a storage medium, in which computer program instructions are stored, and when the computer program instructions are read and executed by a processor, the steps in the above method are performed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic diagram illustrating a control method of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating a step of establishing a luminance model according to an embodiment of the present application;
FIG. 3 is a control step of another display panel according to an embodiment of the present application;
fig. 4 is a schematic diagram of a control device of a display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of another control apparatus for a display panel according to an embodiment of the present disclosure.
Icon: 40-a display panel control device; 41-a data acquisition module; 42-a query module; 43-a control module; 50-display panel control means; 51-a model building module; 52-mapping module.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Referring to fig. 1, fig. 1 is a control method of a display panel according to an embodiment of the present disclosure, the method includes:
in step S11, the target luminance of the target display data and the display panel loading state are acquired.
When the display panel displays different display patterns, the current flowing into the display panel changes along with the display patterns, so that the current flowing into the display panel can be represented by the loading state of the display panel. The display panel may be an OLED (Organic Light Emitting diode) panel, where the OLED refers to a phenomenon that an Organic semiconductor material and a Light Emitting material emit Light by carrier injection and recombination under driving of an electric field. Since the OLED is self-luminous for the pixels, switching for each pixel can be realized, enabling a partitioned backlight at the pixel level.
In step S12, for each pixel on the display panel for displaying the target display data, according to a predetermined mapping relationship between target brightness, a display panel loading state, and a target gray scale, a target gray scale corresponding to the target brightness and the display panel loading state is searched.
In step S13, the display panel is adjusted according to the target gray scale of each pixel.
At present, most of pictures are optimized for display equipment with a low-grade narrow color gamut, the pictures aiming at a 72-percent NTSC color gamut are placed on a display screen with more than 100 percent of NTSC color gamut, and the pictures are distorted under the condition that color management is not adjusted, so that the display panel can generate the color cast condition, therefore, optical compensation needs to be carried out on the display panel, and the bad experience of the color cast and the brightness unevenness to users is eliminated by regulating and controlling the gray scale of the display panel. NTSC is a set of american standard Television broadcast transmission and reception protocols that the National Television Standards Committee is responsible for developing.
The method comprises the steps of storing target brightness of each gray scale of display data in a predetermined mapping relation, finding a target gray scale corresponding to current display data in the predetermined mapping relation by acquiring the target brightness of the display data and a panel loading state when the display panel is determined to be in the abnormal condition of brightness unevenness or color cast and the display panel needs to be controlled and optically compensated, regulating and controlling the gray scale of each pixel on the display panel according to the found target gray scale, and optically compensating the display panel.
Therefore, the display panel can be controlled according to the target gray scale of each pixel, and the problems of low efficiency and low precision of control and compensation of the display panel at present can be solved.
Optionally, the present embodiment further provides a step of establishing a brightness model, please refer to fig. 2, and fig. 2 is a schematic diagram of the step of establishing the brightness model according to the embodiment of the present application. Prior to step S11, this step may include:
in step S21, a brightness model of the display panel is established, where brightness, a panel loading state, and a gray scale in the brightness model correspond to each other one to one.
In step S22, a plurality of training display data are substituted into the brightness model to establish the mapping relationship between the pixels of the display panel and the target gray scales corresponding to different brightnesses and different panel loading states.
When the display panel is regulated and controlled, the corresponding target gray scale of each pixel on the display panel under the current brightness is found in the stored mapping relations.
Therefore, after the mapping relation is stored, when the panel needs to be regulated in the subsequent steps, the target gray scale corresponding to each pixel can be quickly found, and the efficiency of regulating and controlling the display panel can be improved.
Optionally, the mapping relationship is stored in a database, and a three-dimensional graph is used to represent brightness, a panel loading state, and a gray scale with three coordinate axes.
Illustratively, in the embodiment of the present application, the gray scale is represented by the X-axis of a three-dimensional graph, the panel loading state is represented by the Y-axis, and the brightness is represented by the Z-axis, and the mapping relationship between the brightness of 0-140 nit (nit), the gray scale of 0-255, and the panel loading state of 0-90% is displayed in the three-dimensional graph. It should be noted that the three-dimensional diagram described above is merely illustrative, and in actual practice, three coordinate axes of the three-dimensional diagram may be specifically set.
Therefore, the mapping relation is stored in the database, the mapping relation of the brightness, the panel loading state and the gray scale is expressed in a three-dimensional graph mode, and the efficiency of searching the target gray scale can be improved.
Optionally, the acquiring the loading state of the display panel includes:
and calculating the value of a loading index according to the ratio of the gray scale of an input image to the resolution of the display panel, the gamma value of the display panel and the current ratio between the red/green/blue pixels, and weighing the loading state of the display panel according to the value of the loading index.
The loading state of the display panel can change along with the change of display data, and as the display panel can be switched on and off for each pixel through carrier injection and recombination under the driving of an electric field, and the quantity of carriers can influence the magnitude of current, the current loading state of the display panel can be represented by calculating the total current of the display panel as a loading index.
Therefore, the loading state of the display panel can be accurately quantified by calculating the value of the loading index, and the accuracy of regulating and controlling the display panel is improved.
Optionally, the calculating a value of the loading index according to a ratio of a gray scale of the input image to a resolution of the display panel and a current ratio between the red/green/blue pixels includes:
and calculating the loading index according to a loading index calculation formula.
The load index calculation formula is as follows:
wherein, OPR represents the loading index, R _ data, G _ data and B _ data represent the gray scale of the input image, W and H represent the resolution of the display panel, R _ ratio, G _ ratio and B _ ratio represent the current ratio between average red/green/blue pixels, and x is the gamma value of the display panel.
Wherein, R _ data, G _ data and B _ data are gray-scale values converted from three primary colors respectively. The resolution referred to in this application is to be understood as the screen resolution level. W and H respectively indicate the width and height of the display panel or the number of pixels in the horizontal direction and the vertical direction, for example, 4K resolution means that the number of pixels per line in the horizontal direction reaches or approaches 4096, and depending on the range of use, 4K resolution has various derivative resolutions, for example, 4096 x 3112 of Full Aperture 4K, 3656 x 2664 of Academy 4K, 3840 x 2160 of UHDTV standard, and the like, and all belong to the category of 4K resolution.
Therefore, the gray scale of the input image, the resolution of the display panel, the gamma value of the display panel and the influence of the current ratio between the average red/green/blue pixels on the loading state of the display panel can be considered through the loading index calculation formula, so that the loading state of the display panel can be accurately quantized by calculating the value of the loading index, and the accuracy of regulation and control of the display panel is improved.
Optionally, please refer to fig. 3, where fig. 3 is a control step of another display panel provided in the embodiment of the present application, the step may include:
in step S31, the voltage drop of each position of the display panel is calculated by a preset calculation method. In step S32, the display panel is adjusted according to the voltage drop and the target gray scale.
The preset calculation method may be an IRC algorithm, where when the panel brightness is not uniform and/or the color is shifted due to voltage drop of the display panel, the IRC algorithm calculates the voltage drop of the light emitting area of the display panel through an algorithm, obtains the voltage drop of a target node by calculating the voltage of each node in the circuit, and optically compensates the display panel according to the calculated voltage drop.
The voltage drop of the corresponding position can be calculated for a circuit which is simpler than the circuit on the display panel, the display panel is compensated according to the voltage drop, and the target gray scale is searched in the three-dimensional graph and the display panel is regulated and controlled for the pixel of the corresponding position of the circuit which is more complicated on the display panel.
Therefore, the display panel is regulated and controlled in a parallel mode, and the regulation and control efficiency can be improved.
Based on the same inventive concept, an embodiment of the present application further provides a control device for a display panel, please refer to fig. 4, and fig. 4 is a schematic diagram of a control device 40 for a display panel provided in the present application. The apparatus may include:
and a data obtaining module 41, configured to obtain brightness of the target display data and a loading state of the display panel.
And the query module 42 is configured to search, for each pixel on the display panel, which is used for displaying the target display data, a target gray scale corresponding to the target brightness and the target gray scale according to a mapping relationship between predetermined brightness, a display panel loading state, and the target gray scale.
A control module 43, configured to regulate and control the display panel according to the target gray scale of each pixel.
Optionally, referring to fig. 5, fig. 5 is a schematic diagram of another display panel control device 50 according to an embodiment of the present application. The display panel control apparatus 50 may further include, in addition to the data obtaining module 41, the query module 42, and the control module 43 described in fig. 4:
and the model establishing module 51 is configured to establish a brightness model of the display panel, where brightness, a panel loading state, and gray scales in the brightness model correspond to one another.
The mapping module 52 is configured to substitute the training display data into the brightness model to establish the mapping relationship between the pixels of the display panel and the target gray scales corresponding to different brightnesses and different panel loading states.
Optionally, the mapping relationship is stored in a database, and a three-dimensional graph is used to represent the brightness, the panel loading state and the gray scale by three coordinate axes respectively.
Optionally, the data obtaining module 41 is further configured to:
and calculating the value of a loading index according to the ratio of the gray scale of an input image to the resolution of the display panel, the gamma value of the display panel and the current ratio between the red/green/blue pixels, and weighing the loading state of the display panel according to the value of the loading index.
Optionally, the display panel control device 50 may further include:
and the computing module is used for computing the voltage drop of each position of the display panel in a preset computing mode.
And the second control module is used for regulating and controlling the display panel according to the voltage drop and the target gray scale.
Based on the same inventive concept, an embodiment of the present application further provides an electronic device, where the electronic device includes a memory and a processor, where the memory stores program instructions, and the processor executes the program instructions to perform the steps of the method.
It should be understood that the electronic device may be a Personal Computer (PC), a tablet PC, a smart phone, a Personal Digital Assistant (PDA), or other electronic devices having a logic calculation function.
Based on the same inventive concept, the embodiment of the present application further provides a storage medium, in which computer program instructions are stored, and when the computer program instructions are executed by a processor, the steps in the method are executed.
The storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a RanDom Access Memory (RAM), a magnetic disk, or an optical disk.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist alone, or two or more modules may be integrated to form an independent part.
It should be noted that, if the functions are implemented in the form of software functional modules and sold or used as independent products, the functions may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application.
In this document, 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.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A control method of a display panel, comprising:
acquiring target brightness of target display data and a loading state of a display panel, wherein the loading state of the display panel is a state measured according to a value of a loading index, and the loading index represents a total current corresponding to current carriers for switching pixels of the display panel under the driving of an electric field;
for each pixel used for displaying the target display data on the display panel, searching a target gray scale corresponding to the target brightness and the loading state of the display panel according to a predetermined mapping relation among the target brightness, the loading state of the display panel and the target gray scale;
and regulating and controlling the display panel according to the target gray scale of each pixel.
2. The method of claim 1, wherein prior to said obtaining the target brightness of the target display data and the display panel loading status, the method comprises:
establishing a brightness model of the display panel, wherein the brightness, the panel loading state and the gray scale in the brightness model correspond to one another;
and substituting a plurality of training display data into the brightness model to establish the mapping relation between the pixels of the display panel and the target gray scales corresponding to different brightnesses and different panel loading states.
3. The method of claim 2, wherein the mapping is stored in a database, and a three-dimensional graph is used to represent brightness, panel loading status and gray scale in three coordinate axes.
4. The method of claim 1, wherein obtaining the display panel loading status comprises:
calculating the value of the loading index according to the ratio of the gray scale of the input image to the resolution of the display panel, the gamma value of the display panel and the current ratio between the red/green/blue pixels, and comprises the following steps: calculating the loading index according to a loading index calculation formula; the load index calculation formula comprises:
wherein, OPR represents the loading index, R _ data, G _ data and B _ data represent the gray scale of the input image, W and H represent the resolution of the display panel, R _ ratio, G _ ratio and B _ ratio represent the current ratio between average red/green/blue pixels, and x is the gamma value of the display panel;
and weighing the loading state of the display panel according to the value of the loading index.
5. The method of claim 1, wherein said modulating the display panel according to the target gray level of each pixel further comprises:
calculating the voltage drop of each position of the display panel in a preset calculation mode;
and regulating the display panel according to the voltage drop and the target gray scale.
6. A control apparatus of a display panel, characterized in that the apparatus comprises:
the display device comprises a data acquisition module, a data acquisition module and a display module, wherein the data acquisition module is used for acquiring target brightness of target display data and a loading state of a display panel, the loading state of the display panel is measured according to a value of a loading index, and the loading index represents total current corresponding to current carriers for switching pixels under the driving of an electric field of the display panel;
the query module is used for searching a target gray scale corresponding to the target brightness and the loading state of the display panel according to the predetermined mapping relation among the target brightness, the loading state of the display panel and the target gray scale for each pixel used for displaying the target display data on the display panel;
and the control module is used for regulating and controlling the display panel according to the target gray scale of each pixel.
7. The apparatus of claim 6, further comprising:
the model establishing module is used for establishing a brightness model of the display panel, and the brightness, the panel loading state and the gray scale in the brightness model are in one-to-one correspondence;
and the database establishing module is used for substituting a plurality of training display data into the brightness model and establishing the mapping relation between the pixels of the display panel and target gray scales corresponding to different brightness and different panel loading states.
8. An electronic device, comprising a memory having stored therein program instructions and a processor that, when executed, performs the steps of the method of any one of claims 1-5.
9. A storage medium having stored thereon computer program instructions for executing the steps of the method according to any one of claims 1 to 5 when executed by a processor.
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| CN113971918B (en) * | 2021-10-26 | 2024-01-30 | 北京集创北方科技股份有限公司 | Method for obtaining compensation gray scale value, image display method, device and medium |
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