CN113140186B - Display panel compensation method and display device - Google Patents
Display panel compensation method and display device Download PDFInfo
- Publication number
- CN113140186B CN113140186B CN202110437574.5A CN202110437574A CN113140186B CN 113140186 B CN113140186 B CN 113140186B CN 202110437574 A CN202110437574 A CN 202110437574A CN 113140186 B CN113140186 B CN 113140186B
- Authority
- CN
- China
- Prior art keywords
- compensation
- compensation value
- display panel
- gray scale
- target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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]
-
- 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
Abstract
The application provides a display panel compensation method and a display device, wherein the method comprises the steps of acquiring a first reference compensation value corresponding to each pixel in a display panel when the display panel starts to display, wherein the first reference compensation value is a brightness compensation value corresponding to the display panel when the display panel displays; remapping the first reference compensation value to amplify the first reference compensation value to obtain a first target compensation value; and performing Mura compensation on each pixel in the display panel based on the first target compensation value. According to the embodiment of the application, the first reference compensation value of each pixel is amplified, so that the gray-scale value of the low-gray-scale pixel which is close to the low-gray-scale pixel and cannot be shot by a camera originally can be increased, and more space is reserved for the next Mura compensation. Therefore, the compensation multiple value of external compensation has upward adjustment space, and the total panel compensation amount of the OLED is effectively enlarged, so that pixels with originally different gray-scale values still have differences after compensation, and the Mura compensation effect is improved.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a compensation method for a display panel and a display device.
Background
An OLED (Organic Light-Emitting Diode) has been increasingly used in high-performance display as a current type Light-Emitting device. Because of its self-luminous property, it possesses the advantages of high contrast, ultralight and thin, and can be bent, etc. compared with LCD display technology.
Mura is a common undesirable phenomenon in OLED display technology, and is mainly caused by the characteristic difference of each TFT due to the immaturity of the TFT process. Demura is a compensation method aiming at the defect of Mura and comprises internal compensation and external compensation, wherein the internal compensation adopts the characteristic difference of a compensation pixel circuit to a compensation TFT; the external compensation detects the difference of each pixel by optical or electrical means and compensates it by changing the driving voltage. At present, the commonly adopted Demura compensation method is to shoot a plurality of gray-scale pictures by a high-resolution and high-precision CCD (Charge coupled Device) camera, further analyze and display the pixel color distribution characteristics in the pictures according to the data collected by the camera, and identify Mura according to an algorithm; and generating Demura data, namely Mura compensation data according to a corresponding Demura compensation algorithm of the Mura data level to perform Mura compensation. However, when the panel is at low brightness and low gray level, the picture like the gray level of 500nit 5-10 (corresponding to brightness of 0.1-0.4 nit) is far from the 16 gray level Mura pattern captured by the camera. When the Demura depends on the 16 gray-scale Mura data captured by the camera for compensation, the low-gray-scale Mura form of 5-10 gray scales cannot be covered naturally, and the low-brightness Mura corresponding to the low gray scale of the panel is difficult to compensate naturally.
Therefore, how to effectively compensate the low gray level image is a technical problem that needs to be solved in the current display technology field.
Disclosure of Invention
The application provides a color film substrate, a display panel and a display device, and aims to solve the technical problem of how to effectively compensate a low-gray-scale picture.
In one aspect, the present application provides a compensation method for a display panel, where a first reference compensation value corresponding to each pixel in the display panel is obtained when the display panel starts to display, and the first reference compensation value is a luminance compensation value corresponding to the display panel when the display panel displays;
remapping the first reference compensation value to amplify the first reference compensation value to obtain a first target compensation value;
storing the first target compensation value;
and performing Mura compensation on each pixel in the display panel based on the first target compensation value.
In a possible implementation manner of the present application, the performing Mura compensation on each pixel in the display panel based on the first target compensation value includes:
acquiring a compensation multiple corresponding to a current image frame to be displayed;
generating a total compensation value corresponding to the current frame image to be displayed according to the first target compensation value corresponding to each pixel in the display panel and the compensation multiple;
and performing Mura compensation on each pixel in the display panel based on the total compensation value.
In a possible implementation manner of the present application, the remapping the first reference compensation value to amplify the first reference compensation value to obtain a first target compensation value includes:
and remapping the first reference compensation value according to a preset proportional parameter so as to amplify the first reference compensation value to obtain a first target compensation value, wherein the proportional parameter is greater than 1.
In one possible implementation manner of the present application, the range of the proportional parameter is 1 to 4, and the proportional parameter is an integer.
In one possible implementation manner of the present application, the method further includes:
storing a plurality of compensation values of gray scale compensation of the Mura phenomenon by the display panel, wherein the plurality of compensation values are compensated corresponding to different gray scales of the display panel, and the compensation values corresponding to the different gray scales comprising 0 gray scale and a preset lowest gray scale are second reference compensation values;
acquiring a head end compensation value corresponding to the 0 gray scale, wherein the head end compensation value is not 0;
acquiring the current gray scale of the display panel;
and if the current gray scale of the display panel is between the 0 gray scale and the lowest gray scale, performing linear interpolation calculation according to the second reference compensation value and the first-segment compensation value to obtain a second target compensation value corresponding to the current gray scale.
In another aspect, the present application provides a display panel detection method, including:
acquiring original compensation data of a user terminal;
acquiring original optical brightness data of the user terminal;
performing conventional compensation on the original optical brightness data to obtain target compensation data;
comparing the original compensation data with the target compensation data to obtain a comparison result;
and if the comparison result is in a doubling rate relationship, determining that the display panel compensation of the display panel in the user terminal adopts the display panel compensation method.
In one possible implementation manner of the present application, acquiring original optical brightness data of the user terminal includes:
providing a preset level signal to the user terminal so that the user terminal is in an uncompensated state;
and optically shooting the user terminal in the uncompensated state by adopting a Demura device to obtain the original optical brightness data of the user terminal in the uncompensated state.
In a possible implementation manner of the present application, the acquiring original compensation data of the user terminal includes:
and reading the flash data in the user terminal to obtain original compensation data.
In another aspect, the present application provides a display device including:
the display control device comprises an acquisition part, a control part and a display control part, wherein the acquisition part is used for acquiring a first reference compensation value corresponding to each pixel in a display panel when the display panel starts to display, and the first reference compensation value is a brightness compensation value corresponding to the display panel when the display panel displays;
a data processing unit, configured to remap the first reference compensation value to amplify the first reference compensation value, so as to obtain a first target compensation value; the first target compensation value is greater than the first reference compensation value;
a storage section for storing the first target compensation value;
and a compensation unit configured to perform Mura compensation on each pixel in the display panel based on the first target compensation value.
In one possible implementation manner of the present application, the compensation portion is specifically configured to:
acquiring a compensation multiple corresponding to a current image frame to be displayed;
generating a total compensation value corresponding to the current frame image to be displayed according to the first target compensation value corresponding to each pixel in the display panel and the compensation multiple;
performing Mura compensation on each pixel in the display panel based on the total compensation value
In one possible implementation manner of the present application, the data processing unit is specifically configured to:
and remapping the first reference compensation value according to a preset proportional parameter so as to amplify the first reference compensation value to obtain a first target compensation value, wherein the proportional parameter is greater than 1.
In one possible implementation manner of the present application, the range of the proportional parameter is 1 to 4, and the proportional parameter is an integer.
In one possible implementation manner of the present application, the method is further configured to:
storing a plurality of brightness compensation values of the display panel for gray scale compensation of the Mura phenomenon, wherein the plurality of brightness compensation values compensate different gray scales of the display panel, and the different gray scales comprise 0 gray scale and the brightness compensation value corresponding to the preset lowest gray scale is a second reference compensation value;
acquiring a head end compensation value corresponding to the 0 gray scale, wherein the head end compensation value is not 0;
acquiring the current gray scale of the display panel;
and if the current gray scale of the display panel is between the 0 gray scale and the lowest gray scale, performing linear interpolation calculation according to the second reference compensation value and the head end compensation value to obtain a second target compensation value corresponding to the current gray scale.
In another aspect, the present application provides a display panel detection apparatus, including:
the second acquisition unit is used for acquiring the original compensation data of the user terminal;
a third obtaining unit, configured to obtain original optical brightness data of the user terminal;
the second compensation unit is used for carrying out conventional compensation on the original optical brightness data to obtain target compensation data;
the comparison unit is used for comparing the original compensation data with the target compensation data to obtain a comparison result;
and the determining unit is used for determining that the display panel compensation of the display panel in the user terminal adopts the display panel compensation method if the comparison result is in a multiplying factor relation.
In another aspect, the present application provides a display device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the display panel compensation method when executing the program; and/or
The processor implements the display panel detection method when executing the program.
According to the display panel compensation method, the first reference compensation value of each pixel is amplified, so that the gray-scale value of the low-gray-scale pixel which is close to the low-gray-scale pixel and cannot be shot by a camera originally can be increased, and more space is reserved for the next Mura compensation. Therefore, the compensation multiple value of the external compensation has an upward adjustment space, the total panel compensation amount of the OLED is effectively enlarged, pixels with originally distinguished gray-scale values still have differences after compensation, and the Mura compensation effect is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description 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 flow chart illustrating an embodiment of a display panel compensation method according to an embodiment of the present disclosure;
FIG. 2 is a flowchart illustrating an embodiment of step 104 in the present application;
FIG. 3 is a structural flow chart of an embodiment of a display panel inspection method in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an embodiment of a display device in an embodiment of the present application;
FIG. 5 is a schematic structural diagram of an embodiment of a display panel inspection apparatus in an embodiment of the present application;
fig. 6 is a hardware configuration diagram of an embodiment of a display device in an embodiment of the present application;
FIG. 7 is a diagram illustrating the correspondence between the gray level and the brightness of 120Hz blue in the present embodiment;
FIG. 8 is a diagram illustrating gray scale and brightness mapping according to an embodiment of the present application;
FIG. 9 is a graph comparing original data with target compensation data;
FIG. 10 is another comparison of raw data and target compensation data.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 7, fig. 7 is a graph showing the correspondence between the gray level and the brightness of 120HZ blue in the embodiment of the present application. The shooting Gray level is gradually changed from Gray (Gray level) 10 to Gray32, the brightness of the shot pictures is greatly dispersed, namely the Mura difference is large: the closer to the lower gray scale, the more spread the luminance data, and the more the Mura morphology deteriorates.
Therefore, the inventor of the present application finds that when the low-gray-scale Mura morphology is seriously deteriorated, the reference compensation value is determined after the minimum shooting gray scale is selected under the limitation of the Demura device, so that the compensation of the panel by the Demura can only depend on the debugging of the external ratio or Gain value. Typically the upper value of ratio or Gain is 4 or 6 times (depending on the IC internal settings) and hexadecimal denoted FF. When the external ratio or Gain value of many OLED panels is adjusted to the maximum, mura is still not compensated well, and the defect is that the reference compensation value is too small.
The embodiment of the application provides a compensation method of a display panel and a display device, wherein the compensation method of the display panel comprises the following steps: acquiring a first reference compensation value corresponding to each pixel in a display panel when the display panel starts to display, wherein the first reference compensation value is a brightness compensation value corresponding to the display panel when the display panel displays; remapping the first reference compensation value to amplify the first reference compensation value to obtain a first target compensation value; and performing Mura compensation on each pixel in the display panel based on the first target compensation value. The following are detailed below.
Referring to fig. 1 to 6, fig. 1 is a schematic flow chart illustrating an embodiment of a display panel compensation method according to an embodiment of the present disclosure.
With reference to fig. 1 to fig. 6, in the embodiment of the present application, the display panel compensation method includes steps 101, 102, and 103.
101. When the display panel starts to display, a first reference compensation value corresponding to each pixel in the display panel is obtained, and the first reference compensation value is a brightness compensation value corresponding to the display panel during display.
102. Remapping the first reference compensation value to amplify the first reference compensation value to obtain a first target compensation value; the first target compensation value is greater than the first reference compensation value.
103. The first target compensation value is stored.
104. And performing Mura compensation on each pixel in the display panel based on the first target compensation value.
According to the display panel compensation method, the first reference compensation value of each pixel is amplified, so that the gray-scale value of the low-gray-scale pixel which is close to the low-gray-scale pixel which cannot be shot by a camera originally can be increased, and more space is reserved for Mura compensation in the next step. Therefore, the compensation multiple value of the external compensation has an upward adjustment space, the total panel compensation amount of the OLED is effectively enlarged, pixels with originally distinguished gray-scale values still have differences after compensation, and the Mura compensation effect is improved.
It should be noted that, based on the Mura shape under the high and low gray scales of the display panel, the gray scale which can better meet the Mura characteristics of the display panel is selected as the reference gray scale. The method comprises the steps of establishing a fitting Gamma curve of each pixel by shooting optical data of gray scales related to a reference gray scale, finding out a gray scale voltage value corresponding to the Gamma curve when each pixel achieves the gray scale target brightness, and determining the difference value between the gray scale voltage value and the original gray scale voltage value as a first reference compensation value.
In photographing, it is generally performed by a CCD camera, which is a semiconductor device capable of converting optical influences into digital signals. The tiny photosensitive substances implanted on the CCD are called pixels. The larger the number of pixels contained in a CCD, the higher the resolution of the picture it provides. The CCD acts like a film, but it converts the image pixels into digital signals. The CCD has many capacitors arranged in order to sense light and convert the image into digital signal. Each small capacitor can transfer its charged charge to its neighboring capacitor under the control of an external circuit.
Specifically, the CCD camera collects the brightness data of each sub-pixel in the screen body, the CCD camera automatically focuses and aligns, the definition of a CCD image is used as an evaluation standard to automatically focus, the micro-motion mechanism drives the lens to move in the optical axis direction, the CCD shoots the image in real time and transmits the image to the MCU at the rear end to evaluate the definition, the image in a target area is subjected to differentiation/Laplacian operator processing, and the position of the lens corresponding to the maximum sharpness value is the optimal focusing position. Then the PC upper computer controls PG to send image data into the bottle body in sequence according to a preset gray scale sequence to be lightened, R, G and B are respectively sent to people according to the gray scale sequence, and CCD needs to acquire data under each gray scale picture. For example, we can specify that three frames of six gray levels 32, 64, 96, 128, 160, 192 are acquired, so that 18 data files are generated, and the total number of data stored in each data file and the actual physical resolution are kept. These raw luminance data are then returned to the PC.
In the embodiment of the present application, as shown in fig. 8, fig. 8 is a graph of correspondence between Gray scale and brightness in the embodiment of the present application, where an abscissa Gray is a Gray scale value, an ordinate is a brightness value, there are two curves in the graph, one curve actual is a curve between Gray scale and actual brightness, and the other curve Target is a curve between Gray scale and Target brightness, and it can be known from the curves actual and Target that the Target brightness is higher than the actual brightness at the Gray scale value on the same abscissa.
In this embodiment of the present application, as shown in fig. 2, fig. 2 is a flowchart illustrating a specific embodiment of step 104 in this embodiment of the present application, where performing Mura compensation on each pixel in the display panel based on the first target compensation value includes steps 201, 202, and 203:
201. and acquiring the compensation multiple corresponding to the current image frame to be displayed.
202. And generating a total compensation value corresponding to the current frame image to be displayed according to the first target compensation value and the compensation multiple corresponding to each pixel in the display panel.
203. And performing Mura compensation on each pixel in the display panel based on the total compensation value.
In an embodiment of the present application, the remapping the first reference compensation value to amplify the first reference compensation value to obtain a first target compensation value includes: and remapping the first reference compensation value according to a preset proportional parameter so as to amplify the first reference compensation value to obtain a first target compensation value, wherein the proportional parameter is greater than 1. For example, the ratio parameter is 1.5, 2 or 3.
Further, in the embodiment of the present application, the range of the ratio parameter is 1 to 4, the ratio parameter is an integer, and the ratio parameter may be 2, 3 or 4. When the proportional parameter is in the range of 1 to 4, the compensation effect is better.
For convenience of understanding, in the embodiment of the present application, an algorithm formula of the compensation method is:
Gray_out＝Gray_in+offsetbase*offset_scale_ratio*Gain；
wherein, the Gray _ out represents an output Gray level value, the Gray _ in represents an input Gray level value, the offset _ scale _ ratio _ Gain represents a total compensation amount, the offset _ base represents a reference compensation value, the offset _ scale _ ratio represents a ratio parameter, the offset _ scale _ ratio represents a target compensation value obtained by amplifying the reference compensation value, and the Gain represents a compensation multiple.
In an embodiment of the present application, the method further includes: storing a plurality of brightness compensation values of the display panel for gray scale compensation of the Mura phenomenon, wherein the plurality of brightness compensation values are compensated corresponding to different gray scales of the display panel, and the brightness compensation values corresponding to the different gray scales comprising a 0 gray scale and a preset lowest gray scale are second reference compensation values; acquiring a head end compensation value corresponding to the 0 gray scale, wherein the head end compensation value is not 0; acquiring the current gray scale of the display panel; and if the current gray scale of the display panel is between the 0 gray scale and the lowest gray scale, performing linear interpolation calculation according to the second reference compensation value and the head end compensation value to obtain a second target compensation value corresponding to the current gray scale.
In the embodiment, the display panel stores a plurality of compensation values for performing gray scale compensation on the Mura phenomenon, the compensation values are respectively compensated corresponding to different gray scales, generally speaking, the compensation values are at least three compensation values, and at least three compensation values of the compensation values respectively correspond to a low gray scale, a medium gray scale and a high gray scale. In this embodiment, the compensation value corresponding to the lowest gray level among the different gray levels is the first compensation value, for example, the lowest gray level corresponding to the first compensation value is 8 gray levels.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In order to better implement the display panel compensation method in the embodiment of the present application, on the basis of the display panel compensation method, the embodiment of the present application further provides a display panel detection method, as shown in fig. 3, fig. 3 is a structural flow chart of an embodiment of the display panel detection method in the embodiment of the present application, and the display panel detection method includes steps 301 to 305.
301. And acquiring original compensation data of the user terminal.
In an embodiment of the present application, the obtaining of the original compensation data of the user terminal specifically includes: and reading the flash data in the user terminal to obtain original compensation data. Specifically, the flash programmer may read back flash data to obtain original compensation data of the user terminal, where the user terminal may be a mobile phone, a tablet computer, a notebook computer, or a PC computer, and the user terminal is not limited herein.
302. Raw optical brightness data of a user terminal is acquired.
In an embodiment of the present application, acquiring original optical brightness data of the user terminal includes:
providing a preset level signal to the user terminal so that the user terminal is in an uncompensated state; and optically shooting the user terminal in the uncompensated state by adopting Demura equipment to obtain the original optical brightness data of the user terminal in the uncompensated state. The power signal generator such as PG may be used to provide a preset level signal for the user terminal, where the preset level signal is a high level signal. The Demura equipment is also called a gray level compensator.
303. And performing conventional compensation on the original optical brightness data to obtain target compensation data.
In the embodiment of the present application, a data compensation algorithm for performing conventional compensation on the original optical brightness data may be integrated in the Demura device, so that the original optical brightness data may be conventionally compensated through the Demura device. Note that the normal compensation refers to compensation in which the compensation ratio adjustment is not performed on the reference compensation value.
304. And comparing the original compensation data with the target compensation data to obtain a comparison result.
Wherein, the comparison can be performed by using match software or language program programming and other methods. As shown in fig. 9 and 10, fig. 9 is a comparison graph of original data and target compensation data, and fig. 10 is another comparison graph of original data and target compensation data. As can be seen from fig. 9, the trend of the original compensation data and the target compensation data is generally consistent, and thus the corresponding compensation method of fig. 9 is different from that of the present application. As can be seen from fig. 10, the original compensation data and the target compensation data have a multiple relation, which means that the compensation method corresponding to fig. 10 is the same as the compensation method of the present application. It should be noted that the abscissa in fig. 9 and 10 may be time, and the ordinate may be parameters such as voltage or current, and is not limited specifically.
305. And if the comparison result is in a multiplying factor relationship, determining a display panel compensation method adopted by the display panel compensation of the display panel in the user terminal.
In step 305, the comparison result doubling relation refers to the comparison result doubling relation obtained when the target compensation data/the original compensation data are compared, wherein when the target compensation data is a molecule, the value of the magnification is equal to the value of the ratio parameter in the above description, and therefore, the value of the magnification should be greater than 1, specifically, 1.5, 2 or 3, and higher.
In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes are not set forth in detail in order to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
In order to better implement the compensation method of the display panel in the embodiment of the present application, on the basis of the compensation method of the display panel, the embodiment of the present application further provides a display device, as shown in fig. 4, where fig. 4 is a schematic structural diagram of an embodiment of the display device in the embodiment of the present application, and the display device 400 includes: an acquisition unit 401, a data processing unit 402, a storage unit 403, and a compensation unit 404.
An obtaining unit 401 configured to obtain, when a display panel starts displaying, a first reference compensation value corresponding to each pixel in the display panel, where the first reference compensation value is a luminance compensation value corresponding to the display panel when displaying;
a data processing unit 402 for remapping the first reference compensation value to amplify the first reference compensation value to obtain a first target compensation value; the first target compensation value is greater than the first reference compensation value.
A storage part 403 for storing the first target compensation value.
A compensation unit 404 configured to perform Mura compensation on each pixel of the display panel based on the first target compensation value.
In the embodiment of the present application, the compensation portion 404 is specifically configured to:
acquiring a compensation multiple corresponding to a current image frame to be displayed;
generating a total compensation value corresponding to the current frame image to be displayed according to the first target compensation value corresponding to each pixel in the display panel and the compensation multiple;
and performing Mura compensation on each pixel in the display panel based on the total compensation value.
In this embodiment of the application, the data processing unit 402 is specifically configured to:
and remapping the first reference compensation value according to a preset proportional parameter so as to amplify the first reference compensation value to obtain a first target compensation value, wherein the proportional parameter is greater than 1.
In the embodiment of the present application, the range of the proportional parameter is 1 to 4, and the proportional parameter is an integer.
In an embodiment of the present application, the apparatus is further configured to:
storing a plurality of brightness compensation values of the display panel for gray scale compensation of the Mura phenomenon, wherein the plurality of brightness compensation values compensate different gray scales of the display panel, and the different gray scales comprise 0 gray scale and the brightness compensation value corresponding to the preset lowest gray scale is a second reference compensation value;
acquiring a head end compensation value corresponding to the 0 gray scale, wherein the head end compensation value is not 0;
acquiring the current gray scale of the display panel;
and if the current gray scale of the display panel is between the 0 gray scale and the lowest gray scale, performing linear interpolation calculation according to the second reference compensation value and the head end compensation value to obtain a second target compensation value corresponding to the current gray scale.
In order to better implement the compensation method of the display panel in the embodiment of the present application, on the basis of the compensation method of the display panel, the embodiment of the present application further provides a display panel detection apparatus, as shown in fig. 5, fig. 5 is a schematic structural diagram of an embodiment of the display panel detection apparatus in the embodiment of the present application, and the display panel detection apparatus 500 includes: a second obtaining unit 501, a third obtaining unit 502, a second compensating unit 503, a comparing unit 504, and a determining unit 505.
A second obtaining unit 501, configured to obtain original compensation data of the user terminal.
A third obtaining unit 502, configured to obtain original optical brightness data of the user terminal.
A second compensation unit 503, configured to perform conventional compensation on the original optical brightness data to obtain target compensation data.
A comparing unit 504, configured to compare the original compensation data with the target compensation data to obtain a comparison result.
A determining unit 505, configured to determine that the display panel compensation of the display panel in the user terminal adopts the display panel compensation method if the comparison result is in a multiple relation.
In this embodiment of the application, the third obtaining unit 502 is specifically configured to:
providing a preset level signal for the user terminal so that the user terminal is in an uncompensated state;
and optically shooting the user terminal in the uncompensated state by adopting Demura equipment to obtain the original optical brightness data of the user terminal in the uncompensated state.
In this embodiment of the application, the second obtaining unit 501 is specifically configured to:
and reading the flash data in the user terminal to obtain original compensation data.
In addition to the method and apparatus for compensating a display panel described above, an embodiment of the present application further provides a display device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method for compensating a display panel when executing the program; and/or the processor implements the display panel detection method when executing the program. Fig. 6 is a schematic diagram of a hardware structure of an embodiment of an apparatus for performing the display panel compensation method and/or the display panel detection method according to the present invention.
As shown in fig. 6, the apparatus includes one or more processors 601 and a memory 602, where one processor 601 is taken as an example in fig. 6.
The apparatus for performing the panel compensation method and/or the display panel detection method may further include: an input device 603 and an output device 604.
The processor 601, the memory 602, the input device 603, and the output device 604 may be connected by a bus or other means, and are exemplified by being connected by a bus in fig. 6.
The memory 602, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions/modules corresponding to the panel compensation method and/or the display panel detection method in the embodiments of the present application. The processor 601 executes various functional applications of the server and data processing, i.e., implementing the Mura phenomenon compensation method of the above-described method embodiments, by running the non-volatile software programs, instructions, and modules stored in the memory 602.
The memory 602 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the Mura phenomenon compensation apparatus, and the like. Further, the memory 602 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, memory 602 optionally includes memory located remotely from processor 601, and these remote memories may be connected to member user behavior monitoring devices via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 603 may receive input numeric or character information and generate key signal inputs related to user settings and function control of the Mura phenomenon compensation apparatus. The output device 604 may include a display device such as a display screen.
The one or more modules are stored in the memory 602 and, when executed by the one or more processors 601, perform the Mura phenomenon compensation method of any of the method embodiments described above. The technical effect of the embodiment of the device for executing the Mura phenomenon compensation method is the same as or similar to that of any method embodiment.
The compensation method and the display device for the display panel provided by the embodiment of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A compensation method for a display panel, comprising:
acquiring a first reference compensation value corresponding to each pixel in a display panel when the display panel starts to display, wherein the first reference compensation value is a brightness compensation value corresponding to the display panel when the display panel displays;
remapping the first reference compensation value to amplify the first reference compensation value to obtain a first target compensation value; the first target compensation value is greater than the first reference compensation value;
storing the first target compensation value;
performing Mura compensation on each pixel in the display panel based on the first target compensation value;
the method further comprises the following steps:
acquiring original compensation data of a user terminal;
acquiring original optical brightness data of the user terminal;
performing conventional compensation on the original optical brightness data to obtain target compensation data;
comparing the original compensation data with the target compensation data to obtain a comparison result;
if the comparison result is in a multiplying factor relationship, determining a display panel compensation method adopted by the display panel compensation of the display panel in the user terminal;
wherein the acquiring of the original optical brightness data of the user terminal includes:
providing a preset level signal to the user terminal so that the user terminal is in an uncompensated state; and optically shooting the user terminal in the uncompensated state by adopting a Demura device to obtain original optical brightness data of the user terminal in the uncompensated state, wherein the preset level signal is a high level signal, and the preset level signal is a PG power supply signal generator.
2. The method according to claim 1, wherein performing Mura compensation on each pixel in the display panel based on the first target compensation value comprises:
acquiring a compensation multiple corresponding to a current image frame to be displayed;
generating a total compensation value corresponding to the current frame image to be displayed according to the first target compensation value corresponding to each pixel in the display panel and the compensation multiple;
and performing Mura compensation on each pixel in the display panel based on the total compensation value.
3. The method for compensating a display panel according to claim 1, wherein the remapping the first reference compensation value to amplify the first reference compensation value to obtain a first target compensation value comprises:
and remapping the first reference compensation value according to a preset proportional parameter so as to amplify the first reference compensation value to obtain a first target compensation value, wherein the proportional parameter is greater than 1.
4. The compensation method as claimed in claim 3, wherein the range of the scaling parameter is 1 to 4, and the scaling parameter is an integer.
5. The display panel compensation method of claim 1, further comprising:
storing a plurality of brightness compensation values of a display panel for gray scale compensation of a Mura phenomenon, wherein the plurality of brightness compensation values compensate different gray scales of the display panel, and the different gray scales comprise 0 gray scale and the brightness compensation value corresponding to a preset lowest gray scale is a second reference compensation value;
acquiring a head end compensation value corresponding to the 0 gray scale, wherein the head end compensation value is not 0;
acquiring the current gray scale of the display panel;
and if the current gray scale of the display panel is between the 0 gray scale and the lowest gray scale, performing linear interpolation calculation according to the second reference compensation value and the head end compensation value to obtain a second target compensation value corresponding to the current gray scale.
6. A display device, comprising:
the display control device comprises an acquisition part, a control part and a display control part, wherein the acquisition part is used for acquiring a first reference compensation value corresponding to each pixel in a display panel when the display panel starts to display, and the first reference compensation value is a brightness compensation value corresponding to the display panel when the display panel displays;
a data processing unit, configured to remap the first reference compensation value, so as to amplify the first reference compensation value, thereby obtaining a first target compensation value; the first target compensation value is greater than the first reference compensation value;
a storage section for storing the first target compensation value;
a compensation unit configured to perform Mura compensation on each pixel in the display panel based on the first target compensation value;
the apparatus is further configured to:
acquiring original compensation data of a user terminal;
acquiring original optical brightness data of the user terminal;
performing conventional compensation on the original optical brightness data to obtain target compensation data;
comparing the original compensation data with the target compensation data to obtain a comparison result;
if the comparison result is in a multiplying factor relationship, determining a display panel compensation method adopted by the display panel compensation of the display panel in the user terminal;
wherein the acquiring of the original optical brightness data of the user terminal includes:
providing a preset level signal for the user terminal so that the user terminal is in an uncompensated state; and optically shooting the user terminal in the uncompensated state by adopting a Demura device to obtain original optical brightness data of the user terminal in the uncompensated state, wherein the preset level signal is a high level signal, and the preset level signal is a PG power supply signal generator.
7. The display device according to claim 6, wherein the compensation portion is specifically configured to:
acquiring a compensation multiple corresponding to a current image frame to be displayed;
generating a total compensation value corresponding to the current frame image to be displayed according to the first target compensation value corresponding to each pixel in the display panel and the compensation multiple;
and performing Mura compensation on each pixel in the display panel based on the total compensation value.
8. The display device according to claim 6, wherein the data processing section is specifically configured to:
and remapping the first reference compensation value according to a preset proportional parameter so as to amplify the first reference compensation value to obtain a first target compensation value, wherein the proportional parameter is greater than 1.
9. The display device according to claim 8, wherein the scale parameter is in a range of 1 to 4, and the scale parameter is an integer.
10. The display device of claim 6, further configured to:
storing a plurality of brightness compensation values of a display panel for gray scale compensation of a Mura phenomenon, wherein the plurality of brightness compensation values compensate different gray scales of the display panel, and the different gray scales comprise 0 gray scale and the brightness compensation value corresponding to a preset lowest gray scale is a second reference compensation value;
acquiring a head end compensation value corresponding to the 0 gray scale, wherein the head end compensation value is not 0;
acquiring the current gray scale of the display panel;
and if the current gray scale of the display panel is between the 0 gray scale and the lowest gray scale, performing linear interpolation calculation according to the second reference compensation value and the head end compensation value to obtain a second target compensation value corresponding to the current gray scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110437574.5A CN113140186B (en) | 2021-04-22 | 2021-04-22 | Display panel compensation method and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110437574.5A CN113140186B (en) | 2021-04-22 | 2021-04-22 | Display panel compensation method and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113140186A CN113140186A (en) | 2021-07-20 |
| CN113140186B true CN113140186B (en) | 2022-11-01 |
Family
ID=76813629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110437574.5A Active CN113140186B (en) | 2021-04-22 | 2021-04-22 | Display panel compensation method and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113140186B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113674712B (en) * | 2021-08-11 | 2022-09-27 | Tcl华星光电技术有限公司 | Display screen backlight correction method, device and system, storage medium and display system |
| CN114694616B (en) * | 2022-04-25 | 2024-01-12 | 北京欧铼德微电子技术有限公司 | Dimming method and device of display panel, display device and electronic device |
| CN115691390B (en) * | 2022-11-02 | 2023-09-26 | 上海傲显科技有限公司 | Display panel compensation method and device and display device |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7911498B2 (en) * | 2005-12-12 | 2011-03-22 | Novatek Microelectronics Corp. | Compensation device for non-uniform regions in flat panel display and method thereof |
| TWI536341B (en) * | 2014-03-21 | 2016-06-01 | 緯創資通股份有限公司 | Display compensating method and display compensating system |
| US10008172B2 (en) * | 2014-05-13 | 2018-06-26 | Apple Inc. | Devices and methods for reducing or eliminating mura artifact using DAC based techniques |
| CN106205546B (en) * | 2016-09-27 | 2018-09-11 | 深圳市华星光电技术有限公司 | Storage method, the compensation data device of a kind of liquid crystal display and its offset data |
| CN106991982B (en) * | 2017-05-03 | 2018-09-14 | 深圳市华星光电技术有限公司 | A kind of mura phenomenons compensation method of display panel and display panel |
| CN111433841B (en) * | 2017-12-12 | 2021-06-11 | 深圳市柔宇科技股份有限公司 | Mura compensation method for display panel, computer readable storage medium and display device |
| CN109147685B (en) * | 2018-07-30 | 2020-01-31 | 深圳市华星光电半导体显示技术有限公司 | Mura compensation method |
| CN109147668B (en) * | 2018-09-25 | 2020-08-04 | 京东方科技集团股份有限公司 | External compensation method of display panel, driving unit and display panel |
| CN109616049A (en) * | 2018-11-30 | 2019-04-12 | 信利（惠州）智能显示有限公司 | Compensation method, device, computer equipment and the storage medium of display panel |
| KR102552033B1 (en) * | 2018-12-26 | 2023-07-05 | 주식회사 엘엑스세미콘 | Dmura compensation driver |
| CN111415606A (en) * | 2019-01-04 | 2020-07-14 | 三星显示有限公司 | Display device and method for driving display device |
| CN110148388B (en) * | 2019-05-22 | 2021-07-30 | 京东方科技集团股份有限公司 | Method and device for determining pixel compensation value, electronic equipment and storage medium |
| CN110310601B (en) * | 2019-07-12 | 2020-12-11 | 云谷（固安）科技有限公司 | Method, apparatus, computer and medium for improving display brightness uniformity |
| CN110599981B (en) * | 2019-08-15 | 2021-01-29 | 昆山国显光电有限公司 | Screen brightness compensation system and method and electronic equipment |
| CN110648627B (en) * | 2019-09-26 | 2021-10-15 | 京东方科技集团股份有限公司 | Mura phenomenon compensation method, compensation device, display device and electronic equipment |
| CN111462260B (en) * | 2020-04-26 | 2024-01-30 | 芯颖科技有限公司 | Mura compensation method and device of display panel and electronic equipment |
| CN111710277A (en) * | 2020-06-28 | 2020-09-25 | 合肥维信诺科技有限公司 | Compensation method and device of display panel |
| CN111816121B (en) * | 2020-07-07 | 2021-11-05 | 合肥维信诺科技有限公司 | Display panel brightness compensation method and system and display panel |
-
2021
- 2021-04-22 CN CN202110437574.5A patent/CN113140186B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113140186A (en) | 2021-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113140186B (en) | Display panel compensation method and display device | |
| US11270663B2 (en) | Method for detecting compensation parameters of brightness, method for compensating brightness, detection device for detecting compensation parameters of brightness, brightness compensation device, display device, and non-volatile storage medium | |
| US10636345B2 (en) | Method of compensating in display panel, driving unit and display panel | |
| WO2022022025A1 (en) | Brightness compensation method, apparatus and device for display panel | |
| CN112530347B (en) | Method, device and equipment for determining compensation gray scale | |
| US7123221B2 (en) | Electro-optical apparatus, driving method thereof, and electronic device | |
| WO2019001354A1 (en) | Display panel gray scale adjustment method and device | |
| CN111816121B (en) | Display panel brightness compensation method and system and display panel | |
| WO2020140787A1 (en) | Pixel compensation method, device, storage medium, and display screen | |
| CN108510965A (en) | A kind of display brightness compensation method, apparatus and system | |
| KR20190052195A (en) | Method of compensating for non-uniformity of luminance of a display panel and display device employing the same | |
| US20080298696A1 (en) | Buffer management for an adaptive buffer value using accumulation and averaging | |
| CN110301000B (en) | Method for compensating brightness unevenness of display device and corresponding display device | |
| CN110706648B (en) | Image display adjustment method and system and display panel | |
| CN110021271B (en) | Optical compensation method, optical compensation system, display method and display device | |
| CN113724652B (en) | Compensation method and device for Mura of OLED display panel and readable medium | |
| CN110796979A (en) | Driving method and driving device of display panel | |
| JP2005500590A5 (en) | ||
| US8159571B2 (en) | Method of generating HDR image and digital image pickup device using the same | |
| CN114582284A (en) | Display driving method, display driver and display device | |
| CN116320714A (en) | Image acquisition method, apparatus, device, storage medium, and program product | |
| US20240062696A1 (en) | Demura method for display panel | |
| KR20160079246A (en) | Defect compensation apparatus and image quality compensation apparaturs of flat display device having the same | |
| KR20210157953A (en) | Apparatus for testing display device and display device for performing mura compensation and mura compensation method | |
| CN113272886A (en) | Correction image generation system, image control method, image control program, and recording medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |