CN109272945B - Backlight correction method and device for display screen and computer readable storage medium - Google Patents
Backlight correction method and device for display screen and computer readable storage medium Download PDFInfo
- Publication number
- CN109272945B CN109272945B CN201811322242.7A CN201811322242A CN109272945B CN 109272945 B CN109272945 B CN 109272945B CN 201811322242 A CN201811322242 A CN 201811322242A CN 109272945 B CN109272945 B CN 109272945B
- Authority
- CN
- China
- Prior art keywords
- display screen
- mura
- brightness
- data
- data table
- 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
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- 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
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- 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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0613—The adjustment depending on the type of the information to be displayed
- G09G2320/062—Adjustment of illumination source parameters
Abstract
The invention discloses a backlight correction method of a display screen, which comprises the following steps: acquiring a brightness mura distribution picture of a display screen to be detected under a target gray scale, and performing data processing on the brightness mura distribution picture to generate a display screen mura data table; according to a preset brightness correction data table and the display screen mura data table, generating demura data under different gray scales; and inputting the generated demura data into a signal driving circuit of the display screen to be detected so as to finish backlight correction of the display screen to be detected. The invention also discloses a backlight correction device of the display screen and a computer readable storage medium. According to the method, the shooting of the low gray scale is cancelled, the number of the shot pictures is reduced to one, the shooting time is shortened, a beat basis is provided for the batch production application of backlight Mura image correction, and the beneficial effect of improving the backlight correction efficiency of the display screen is further realized.
Description
Technical Field
The present invention relates to the field of display screen backlight correction technologies, and in particular, to a method and an apparatus for correcting backlight of a display screen, and a computer-readable storage medium.
Background
The Mura of the liquid crystal display screen (which refers to the phenomenon that the brightness of the display is uneven to cause various marks) has two types, namely Cell Mura caused by liquid crystal manufacturing process and backlight Mura caused by backlight unevenness, the former type is obvious under a dark field, the latter type is obvious under a bright field, and the watching experience of a user is seriously influenced. Cell Mura correction methods are many, but dark rooms are needed, photographing time is long, equipment is high, and production line application is limited to products with high quality requirements. Backlight Mura is generally solved by modifying the optical design, but this method of modifying the hardware lengthens the product development cycle and increases the product cost. At present, the method for correcting the backlight Mura begins to appear in the market, the method comprises the steps of shooting Mura data of not less than 3 different gray-scale pictures, then calculating the Mura data under other gray scales by an interpolation method, and finally generating the DEMURA data. The method for correcting the backlight Mura by using the software algorithm can eliminate the defects caused by DEMURA by changing the optical design, but has the defects of long photographing and data processing time which is far longer than about 25 seconds of production line rhythm, reduces the backlight adjusting efficiency and is not suitable for batch production of production lines.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a backlight correction method for a display screen, and aims to solve the technical problem that the backlight adjustment efficiency of the display screen is low due to the fact that long-time photographing and data processing processes are needed when the backlight of the display screen is corrected in the prior art.
In order to achieve the above object, the present invention provides a backlight correction method for a display screen, which includes the following steps:
acquiring a brightness mura distribution picture of a display screen to be detected under a target gray scale, and performing data processing on the brightness mura distribution picture to generate a display screen mura data table;
according to a preset brightness correction data table and the display screen mura data table, generating demura data under different gray scales;
and inputting the generated demura data into a signal driving circuit of the display screen to be detected so as to finish backlight correction of the display screen to be detected.
Preferably, before the step of generating demura data under different gray scales according to a preset brightness correction data table and the display screen mura data table, the method further includes:
acquiring a target brightness curve and a preset index curve of a target position of a display screen to be detected;
and calculating target correction data of the target brightness curve corrected to the preset exponential curve in a preset format, and generating the preset brightness correction data table according to the calculated target correction data.
Preferably, the step of obtaining a target brightness curve of a target position of the display screen to be detected and a preset index curve further includes:
acquiring target brightness of a target position of the display screen to be detected under different gray scales;
and confirming a target brightness curve of the display screen to be tested according to the obtained target brightness.
Preferably, the step of obtaining a brightness mura distribution picture of the display screen to be detected under the target gray scale and performing data processing on the brightness mura distribution picture to generate a display screen mura data table further includes:
and inputting the acquired brightness mura distribution picture into a preset mura data calculation formula, and generating the display screen mura data table according to a calculation result.
Preferably, the step of generating demura data under different gray scales according to a preset brightness correction data table and the display screen mura data table further includes:
extracting the data contents of the preset brightness correction data table and the display screen mura data table;
and inputting the extracted data content into a preset demura data generation formula to generate the demura data under different gray scales.
In addition, to achieve the above object, the present invention further provides a backlight correction device for a display panel, including: the backlight correction method comprises a memory, a processor and a backlight correction program of the display screen, wherein the backlight correction program of the display screen is stored on the memory and can run on the processor, and when being executed by the processor, the steps of the backlight correction method of the display screen are realized.
The present invention also provides a computer-readable storage medium, comprising: the backlight correction method comprises a memory, a processor and a backlight correction program of the display screen, wherein the backlight correction program of the display screen is stored on the memory and can run on the processor, and when being executed by the processor, the steps of the backlight correction method of the display screen are realized.
The invention provides a backlight correction method of a display screen, which comprises the steps of obtaining a brightness mura distribution picture of the display screen to be detected under a target gray scale, and carrying out data processing on the brightness mura distribution picture to generate a display screen mura data table; according to a preset brightness correction data table and the display screen mura data table, generating demura data under different gray scales; and inputting the generated demura data into a signal driving circuit of the display screen to be detected so as to finish backlight correction of the display screen to be detected. The method comprises the steps of obtaining brightness of a certain position of a display screen under different gray scales by using a brightness meter, correcting the brightness of the different gray scales to be distributed in a fixed index curve through a software algorithm, shooting a Mura picture under the 255 gray scales by using a CCD lens, calculating Mura data under the 255 gray scales, and generating DEMURA data under the different gray scales by using the Mura data under the 255 gray scales, the fixed index curve and a brightness correction data table according to a certain algorithm. By canceling the shooting of the low gray scale, the number of the shot pictures is reduced to one, the shooting time is shortened, a beat basis is provided for the application of backlight Mura image correction batch production, and the beneficial effect of improving the backlight correction efficiency of the display screen is further realized.
Drawings
FIG. 1 is a schematic diagram of a terminal \ device structure of a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a backlight correction method of a display panel according to a first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: acquiring a brightness mura distribution picture of a display screen to be detected under a target gray scale, and performing data processing on the brightness mura distribution picture to generate a display screen mura data table; according to a preset brightness correction data table and the display screen mura data table, generating demura data under different gray scales; and inputting the generated demura data into a signal driving circuit of the display screen to be detected so as to finish backlight correction of the display screen to be detected.
In the prior art, when the backlight Mura is solved by changing the optical design, the backlight Mura is corrected by applying a method for correcting the cell Mura, the method shoots Mura data of not less than 3 pictures with different gray scales, then calculates the Mura data under other gray scales by using an interpolation method, and finally generates DEMURA data. The method for correcting the backlight Mura by using the software algorithm can eliminate the defects caused by DEMURA by changing the optical design, but has the defects of long photographing and data processing time which is far longer than about 25 seconds of production line rhythm, reduces the backlight adjusting efficiency and is not suitable for batch production of production lines.
The invention provides a solution, luminance of a certain position of a display screen under different gray scales is obtained by using a luminance meter, then the luminance of the different gray scales is corrected to be distributed to a fixed index curve through a software algorithm, a Mura picture under the 255 gray scale is shot by using a CCD lens, Mura data under the 255 gray scale are calculated, and DEMURA data under the different gray scales are generated by using the Mura data under the 255 gray scale, the fixed index curve and a luminance correction data table according to a certain algorithm. By canceling the shooting of the low gray scale, the number of the shot pictures is reduced to one, the shooting time is shortened, a beat basis is provided for the application of backlight Mura image correction batch production, and the beneficial effect of improving the backlight correction efficiency of the display screen is further realized.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention can be a PC, and can also be a mobile or non-mobile terminal device with a liquid crystal display screen, such as a smart phone, a tablet computer, an electronic book reader, a portable computer and the like.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a backlight correction program of a display screen.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call a backlight correction program of the display screen stored in the memory 1005, and perform the following operations:
acquiring a brightness mura distribution picture of a display screen to be detected under a target gray scale, and performing data processing on the brightness mura distribution picture to generate a display screen mura data table;
according to a preset brightness correction data table and the display screen mura data table, generating demura data under different gray scales;
and inputting the generated demura data into a signal driving circuit of the display screen to be detected so as to finish backlight correction of the display screen to be detected.
Further, the processor 1001 may call a backlight correction program of the display screen stored in the memory 1005, and further perform the following operations:
acquiring a target brightness curve and a preset index curve of a target position of a display screen to be detected;
and calculating target correction data of the target brightness curve corrected to the preset exponential curve in a preset format, and generating the preset brightness correction data table according to the calculated target correction data.
Further, the processor 1001 may call a backlight correction program of the display screen stored in the memory 1005, and further perform the following operations:
acquiring target brightness of a target position of the display screen to be detected under different gray scales;
and confirming a target brightness curve of the display screen to be tested according to the obtained target brightness.
Further, the processor 1001 may call a backlight correction program of the display screen stored in the memory 1005, and further perform the following operations:
and inputting the acquired brightness mura distribution picture into a preset mura data calculation formula, and generating the display screen mura data table according to a calculation result.
Further, the processor 1001 may call a backlight correction program of the display screen stored in the memory 1005, and further perform the following operations:
extracting the data contents of the preset brightness correction data table and the display screen mura data table;
and inputting the extracted data content into a preset demura data generation formula to generate the demura data under different gray scales.
Referring to fig. 2, fig. 2 is a schematic flow chart of a backlight correction method of a display screen according to a first embodiment of the present invention, where the backlight correction method of the display screen includes:
step S10, acquiring a brightness mura distribution picture of a display screen to be detected under a target gray scale, and performing data processing on the brightness mura distribution picture to generate a display screen mura data table;
and confirming that the liquid crystal display screen is the display screen to be detected based on the currently applied liquid crystal display screen. And acquiring a brightness mura distribution picture of the display screen to be detected under the target gray scale, wherein mura is a phenomenon of a liquid crystal display, specifically a phenomenon that the brightness of the display is uneven, so that various traces are caused. Therefore, in the method, the acquired brightness mura distribution picture is based on the mura distribution picture of the current display screen to be detected under the target gray scale, wherein the target gray scale mainly refers to the 255 gray scale. And processing preset mura data to generate a display screen mura data table under the 255 gray scales according to the acquired mura distribution picture under the 255 gray scales. The gray scale is obtained by dividing the brightness change between the brightest brightness and the darkest brightness into a plurality of parts, so that the gray scale represents the gradation level of different brightness of the liquid crystal display screen from the darkest brightness to the brightest brightness. The more the intermediate levels are, the more exquisite the picture effect can be presented. Taking 8bit panel as an example, the image can represent 2 to the power of 8, which is equal to 256 luminance levels, and we refer to it as 256 gray levels. Each pixel on the LCD screen is composed of red, green and blue with different brightness levels to form different color dots. That is, the color change of each dot on the screen is actually caused by the gray scale change of the three RGB sub-pixels constituting the dot. The gray level defined in this embodiment is the gray level under 255 standards. Therefore, when a display screen mura data table is generated based on the brightness mura picture obtained from the target gray scale, the step of obtaining the brightness mura distribution picture of the display screen to be detected under the target gray scale and performing data processing on the brightness mura distribution picture to generate the display screen mura data table further includes:
and inputting the acquired brightness mura distribution picture into a preset mura data calculation formula, and generating the display screen mura data table according to a calculation result.
And inputting the acquired target gray scale, namely the brightness mura distribution picture under the 255 gray scale, into a preset mura data calculation formula so as to calculate a display mura data table based on the brightness mura distribution picture. Therefore, the calculated display mura data table contains the brightness trace data under the target gray scale, and the display mura data table serving as a gray scale standard provides basic data for correcting a display screen.
Step S20, generating demura data under different gray scales according to a preset brightness correction data table and the display screen mura data table;
and based on the generated display screen mura data table, generating demura data based on different gray scales of the display screen to be detected by using a preset continuous reading correction data table of the currently applied display screen to be detected and the generated display screen mura data table. When the demura data is generated, the demura data is mainly generated through the preset brightness correction data table and the table content of the generated display screen mura data table, so that the step of generating the demura data under different gray scales according to the preset brightness correction data table and the display screen mura data table further comprises the following steps of:
extracting the data contents of the preset brightness correction data table and the display screen mura data table;
and inputting the extracted data content into a preset demura data generation formula to generate the demura data under different gray scales.
And correcting data contents in the data table according to the preset brightness and the generated data table of the display screen mura. Respectively extracting data contents of a preset brightness correction data table and a display screen mura data table, inputting the extracted data contents into a preset demura data generation formula, and calculating demura data under different gray scales according to a preset exponential curve in the preset demura data generation formula. And the preset demura data generation formula is a calculation formula created by demura data under different gray scales generated by related technicians through a preset brightness correction data table, data contents in a display screen mura data table and a preset exponential curve. In addition, the preset exponential curve is a defined fixed exponential curve of the display screen to be tested, and the exponential curve is used for describing a phenomenon of increasing or decreasing in a geometric progression, that is, the observation value Yt of the time series changes according to an exponential rule, or the observation value of the time series increases or decreases according to a certain increase rate, in this embodiment, the preset exponential curve refers to a fixed luminance change exponential curve of the liquid crystal display screen.
As described above, when generating demura data at different gray scales, the calculation is performed based on the data content in the preset brightness correction data table, and therefore, before the step of generating demura data at different gray scales according to the preset brightness correction data table and the display screen mura data table, the method further includes:
acquiring a target brightness curve and a preset index curve of a target position of a display screen to be detected;
and calculating target correction data of the target brightness curve corrected to the preset exponential curve in a preset format, and generating the preset brightness correction data table according to the calculated target correction data.
Based on the display screen to be detected, acquiring a brightness curve of the display screen to be detected at the target position of the display screen to be detected under different gray scales, and correcting the brightness curve of the target position of the display screen to be detected to a preset exponential curve through a preset brightness correction algorithm. In this way, when the luminance curves at different gray scales are corrected to the correction data of the preset exponential curve, the correction data at each gray scale are respectively calculated by the preset luminance correction algorithm, and the preset luminance correction data table is generated according to the calculation result, so that the preset luminance correction data table comprises the correction data of the whole gray scale corrected from the luminance curve at the target position to the preset exponential curve. In addition, when a preset brightness correction data table is generated according to the brightness curve of the target position of the display screen to be detected, the brightness curve of the target position needs to be generated according to the brightness information of the target position, and therefore the step of acquiring the target brightness curve and the preset index curve of the target position of the display screen to be detected further includes:
acquiring target brightness of a target position of the display screen to be detected under different gray scales;
and confirming a target brightness curve of the display screen to be tested according to the obtained target brightness.
Acquiring the brightness of the target position under different gray scales based on the currently confirmed target position of the display screen to be detected, generating a target brightness curve of the target position of the display screen to be detected according to a preset brightness curve generation rule, and generating a brightness curve according to brightness information as an existing curve index calculation formula, which is not repeated herein.
And step S30, inputting the generated demura data into a signal driving circuit of the display screen to be detected so as to finish backlight correction of the display screen to be detected.
And generating demura data under different gray scales according to data in a preset brightness correction data table and data content in a display screen mura data table, correcting backlight of the currently applied liquid crystal display screen based on the generated demura data, correcting backlight operation of the liquid crystal display screen based on the demura data, and performing related operation by related technicians.
In the embodiment, the luminance meter is used for obtaining the luminance of a certain position of the display screen under different gray scales, then the luminance of the different gray scales is corrected to be distributed to a fixed index curve through a software algorithm, a Mura picture under 255 gray scales is shot by a CCD lens, Mura data under 255 gray scales are calculated, and DEMORA data under 255 gray scales, the fixed index curve and a luminance correction data table are generated into DEMORA data under different gray scales according to a certain algorithm. By canceling the shooting of the low gray scale, the number of the shot pictures is reduced to one, the shooting time is shortened, a beat basis is provided for the application of backlight Mura image correction batch production, and the beneficial effect of improving the backlight correction efficiency of the display screen is further realized.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a backlight correction program of a display screen is stored on the computer-readable storage medium, and when executed by a processor, the backlight correction program of the display screen implements the following operations:
acquiring a brightness mura distribution picture of a display screen to be detected under a target gray scale, and performing data processing on the brightness mura distribution picture to generate a display screen mura data table;
according to a preset brightness correction data table and the display screen mura data table, generating demura data under different gray scales;
and inputting the generated demura data into a signal driving circuit of the display screen to be detected so as to finish backlight correction of the display screen to be detected.
Further, the backlight correction program of the display screen, when executed by the processor, further implements the following operations:
acquiring a target brightness curve and a preset index curve of a target position of a display screen to be detected;
and calculating target correction data of the target brightness curve corrected to the preset exponential curve in a preset format, and generating the preset brightness correction data table according to the calculated target correction data.
Further, the backlight correction program of the display screen, when executed by the processor, further implements the following operations:
acquiring target brightness of a target position of the display screen to be detected under different gray scales;
and confirming a target brightness curve of the display screen to be tested according to the obtained target brightness.
Further, the backlight correction program of the display screen, when executed by the processor, further implements the following operations:
and inputting the acquired brightness mura distribution picture into a preset mura data calculation formula, and generating the display screen mura data table according to a calculation result.
Further, the backlight correction program of the display screen, when executed by the processor, further implements the following operations:
extracting the data contents of the preset brightness correction data table and the display screen mura data table;
and inputting the extracted data content into a preset demura data generation formula to generate the demura data under different gray scales.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A backlight correction method of a display screen is characterized by comprising the following steps:
acquiring a brightness mura distribution picture of a display screen to be detected under a target gray scale, inputting a preset mura data calculation formula to the brightness mura distribution picture, and generating a display screen mura data table according to a calculation result;
according to a preset brightness correction data table and the display screen mura data table, generating demura data under different gray scales, wherein the preset brightness correction data table contains correction data of correcting a brightness curve of a target position to a preset exponential curve under the whole gray scale;
and inputting the generated demura data into a signal driving circuit of the display screen to be detected so as to finish backlight correction of the display screen to be detected.
2. The method for correcting backlight of claim 1, wherein before the step of generating demura data at different gray scales according to a preset brightness correction data table and the mura data table of the display screen, the method further comprises:
acquiring a target brightness curve and a preset index curve of a target position of a display screen to be detected;
and calculating target correction data of the target brightness curve corrected to the preset exponential curve in a preset format, and generating the preset brightness correction data table according to the calculated target correction data.
3. The method for correcting backlight of claim 2, wherein the step of obtaining the target brightness curve and the predetermined exponential curve of the target position of the display screen to be measured comprises:
acquiring target brightness of a target position of the display screen to be detected under different gray scales;
and confirming a target brightness curve of the display screen to be tested according to the obtained target brightness.
4. The method for correcting backlight of claim 1, wherein the step of generating demura data at different gray levels according to a preset brightness correction data table and the mura data table of the display screen comprises:
extracting the data contents of the preset brightness correction data table and the display screen mura data table;
and inputting the extracted data content into a preset demura data generation formula to generate the demura data under different gray scales.
5. A backlight correction device for a display screen, the backlight correction device for the display screen comprising: a memory, a processor and a backlight correction program of a display screen stored on the memory and operable on the processor, the backlight correction program of the display screen when executed by the processor implementing the steps of the backlight correction method of the display screen according to any one of claims 1 to 4.
6. A computer-readable storage medium, the computer-readable storage medium comprising: a memory, a processor and a backlight correction program of a display screen stored on the memory and operable on the processor, the backlight correction program of the display screen when executed by the processor implementing the steps of the backlight correction method of the display screen according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322242.7A CN109272945B (en) | 2018-11-07 | 2018-11-07 | Backlight correction method and device for display screen and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322242.7A CN109272945B (en) | 2018-11-07 | 2018-11-07 | Backlight correction method and device for display screen and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109272945A CN109272945A (en) | 2019-01-25 |
| CN109272945B true CN109272945B (en) | 2021-08-24 |
Family
ID=65192363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811322242.7A Active CN109272945B (en) | 2018-11-07 | 2018-11-07 | Backlight correction method and device for display screen and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109272945B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109903735B (en) * | 2019-01-29 | 2021-01-22 | 广州视源电子科技股份有限公司 | Display calibration method, device, system, computer equipment and storage medium |
| CN110086961A (en) * | 2019-05-28 | 2019-08-02 | 易诚高科（大连）科技有限公司 | A kind of DeMURA algorithm for OLED screen |
| CN112304421B (en) * | 2019-07-26 | 2022-03-11 | 深圳Tcl数字技术有限公司 | Processing method of gray scale intensity data, storage medium and terminal equipment |
| CN113298739B (en) * | 2021-07-27 | 2021-11-02 | 华兴源创(成都)科技有限公司 | Display repair method, computer device, and computer-readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140129727A (en) * | 2013-04-30 | 2014-11-07 | 엘지디스플레이 주식회사 | Apparatus and Method for Generating of Luminance Correction Data |
| CN105575326A (en) * | 2016-02-16 | 2016-05-11 | 深圳市华星光电技术有限公司 | Method for calibrating brightness unevenness of OLED (Organic Light Emitting Diode) display panel |
| CN105590604A (en) * | 2016-03-09 | 2016-05-18 | 深圳市华星光电技术有限公司 | Mura phenomenon compensation method |
| CN107657916A (en) * | 2017-09-26 | 2018-02-02 | 惠科股份有限公司 | Method, structure and the repair system of image compensation signal generation |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001343955A (en) * | 2000-01-28 | 2001-12-14 | Seiko Epson Corp | Electrooptical device, image processing circuit, method for correcting image data and electronic equipment |
| CN105529002B (en) * | 2014-09-30 | 2019-05-21 | 青岛海信电器股份有限公司 | A kind of method and device of determining luminance compensation coefficient |
| KR102281099B1 (en) * | 2014-12-10 | 2021-07-26 | 삼성디스플레이 주식회사 | Display apparatus, method of driving the same and vision inspection apparatus for the same |
| CN105741762B (en) * | 2016-03-31 | 2018-01-30 | 深圳市华星光电技术有限公司 | The method for eliminating OLED display panel Mura |
| CN105654891B (en) * | 2016-04-05 | 2018-06-26 | 京东方科技集团股份有限公司 | A kind of method, apparatus and display panel for obtaining mura offsets |
| CN105913815B (en) * | 2016-04-15 | 2018-06-05 | 深圳市华星光电技术有限公司 | Display panel Mura phenomenon compensation methodes |
| CN106782264B (en) * | 2016-12-27 | 2019-12-03 | 武汉精测电子集团股份有限公司 | Mould group color spot prosthetic device and method based on PCGPU |
| CN107045863B (en) * | 2017-06-26 | 2018-02-16 | 惠科股份有限公司 | The GTG method of adjustment and device of a kind of display panel |
| CN108766372B (en) * | 2018-04-28 | 2020-12-01 | 咸阳彩虹光电科技有限公司 | Method for improving mura phenomenon of display panel |
| CN108510965B (en) * | 2018-05-03 | 2019-10-11 | 武汉天马微电子有限公司 | A kind of display brightness compensation method, apparatus and system |
-
2018
- 2018-11-07 CN CN201811322242.7A patent/CN109272945B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140129727A (en) * | 2013-04-30 | 2014-11-07 | 엘지디스플레이 주식회사 | Apparatus and Method for Generating of Luminance Correction Data |
| CN105575326A (en) * | 2016-02-16 | 2016-05-11 | 深圳市华星光电技术有限公司 | Method for calibrating brightness unevenness of OLED (Organic Light Emitting Diode) display panel |
| CN105590604A (en) * | 2016-03-09 | 2016-05-18 | 深圳市华星光电技术有限公司 | Mura phenomenon compensation method |
| CN107657916A (en) * | 2017-09-26 | 2018-02-02 | 惠科股份有限公司 | Method, structure and the repair system of image compensation signal generation |
Non-Patent Citations (2)
| Title |
|---|
| TFT-LCD Mura 缺陷机器视觉检测方法;毕昕，丁汉;《机械工程学报》;20100630;第46卷(第12期);第13-19页 * |
| 大尺寸液晶显示屏MURA不良电学补偿研究;葛宜峰,钱志禹等;《电子世界》;20180108;第11-13页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109272945A (en) | 2019-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109272945B (en) | Backlight correction method and device for display screen and computer readable storage medium | |
| US10460701B2 (en) | Display mura correction method, apparatus, and system | |
| CN109256096B (en) | Display brightness compensation method, device and equipment | |
| CN108761777B (en) | Method and equipment for determining distortion quantity and distortion correction of optical device | |
| CN109036333B (en) | Display parameter correction method and device of display, terminal equipment and storage medium | |
| CN107293265B (en) | Display screen picture adjusting method, display terminal and readable storage medium | |
| CN111243550A (en) | Adjusting device, adjusting method and medium for gamma voltage and white balance of display screen | |
| CN109637437B (en) | Image display control method, device, medium and display screen control system | |
| WO2021232198A1 (en) | Display screen brightness adjustment method and apparatus | |
| EP3905672B1 (en) | Color space mapping method and device, computer readable storage medium and apparatus | |
| US20210012700A1 (en) | Adjusting method, adjusting device for gamma value of display panel, and display apparatus | |
| CN113674711B (en) | Low gray scale color temperature regulation and control method, device, equipment and storage medium | |
| CN111124404A (en) | Custom color display method and system | |
| CN113380170B (en) | Display compensation method and device of display panel, display device and medium | |
| JP2004151167A (en) | Method and system for image correction | |
| CN109559707B (en) | Gamma value processing method and device of display panel and display equipment | |
| US8300976B2 (en) | System and method for adjusting backlight in measurement of a profile image | |
| CN110896466B (en) | White balance adjustment method and system of display device | |
| CN112304421B (en) | Processing method of gray scale intensity data, storage medium and terminal equipment | |
| CN105427816A (en) | Information processing method and electronic equipment | |
| CN112289274B (en) | Display method and device | |
| CN114677983B (en) | Display calibration method and related device | |
| CN111276089B (en) | Gray scale compensation calculation method and device and display device | |
| CN115132142A (en) | Gamma correction method based on camera display screen under screen and related product | |
| CN100496084C (en) | Image correction method and system |
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 |