CN113920927B - Display method, display panel and electronic equipment - Google Patents
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
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Abstract
The embodiment of the application provides a display method, a display panel and electronic equipment; the display method comprises the steps of obtaining original color data of a display panel at a target position, converting the original color data into first color data, converting the first color data into second color data comprising a target brightness value, determining a target color component value of the second color data based on the target brightness value of the second color data, and finally converting the second color data into target color data which is located in the same color space as the original color data; the display method can compensate for the spectral drift of the display panel under different currents, so that the color coordinate of the same mixed color under different brightness is kept unchanged, the color cast of the display panel is reduced and eliminated, and the color precision of the display panel is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display method, a display panel and electronic equipment.
Background
The current image processing technology divides the display area of the liquid crystal panel into a plurality of pixels, and each pixel has sub-pixels of three primary colors, i.e., red, green, and blue. Since all visible light colors can be generated by mixing red, green and blue light, the color to be expressed by a pixel can be constructed by controlling the brightness of the red, green and blue sub-pixels.
A color management module is included in an existing display for switching a color gamut displayed by the display to meet the operational requirements of different color gamut standards. Common color gamut standards are sRGB, DCI-P3, AdobeRGB, and the like. Unlike the spectral characteristics of organic light emitting diodes and liquid crystal displays, the spectrum of Micro-LEDs (Micro-LEDs) shifts with the change of driving current, and the conventional display panel manufacturing process corrects the brightness and white color coordinates of different gray scales, so that the gray picture satisfies the gamma curve and the specified ciexyz coordinate (a chromaticity diagram proposed by the international commission on illumination at 1931, which has three parameters, Y represents brightness, and x and Y represent chromaticity values). When the display is used, the color management module or the application-side color management module corrects the original color gamut of the display to a standard color gamut, but the color management module is not optimized for the RGB spectral shift, so that color cast is generated on the Micro-LED display.
Therefore, a display method, a display panel and an electronic device are needed to solve the above technical problems.
Disclosure of Invention
The embodiment of the application provides a display method, a display panel and electronic equipment, so as to solve the technical problem that a micro LED display in the prior art generates spectrum drift along with the change of driving current to cause color cast.
An embodiment of the present application provides a display method, including:
acquiring original color data of a display panel at a target position;
converting the original color data into first color data, wherein the first color data is color data which is in a different color space from the original color data;
calling an incidence relation between gray scale and brightness, determining a target brightness value of the first color data based on a gray scale value of the first color data, and converting the first color data into second color data comprising the target brightness value;
calling an incidence relation between brightness and a chrominance component, and determining a target chrominance component value of the second color data based on a target brightness value of the second color data;
and converting the second color data into target color data in the same color space as the original color data according to the target brightness value and the target chromaticity component value.
Optionally, in some embodiments of the present application, the raw color data includes any one of color data of a CIE-sRGB color space and color data of a CIE-AdobeRGB color space.
Optionally, in some embodiments of the present application, the first color data includes any one of color data of a CIE-XYZ color space, color data of a CIE-xyY color space, color data of a CIE-Yuv color space, and color data of a CIE-Yu 'v' color space.
Optionally, in some embodiments of the present application, the step of invoking the association relationship between the gray scale and the brightness includes:
adjusting and calibrating the gamma voltage of the display panel to ensure that the initial chromaticity coordinate value of the CIE-xyY color space is within a preset range when the display panel displays a white picture;
respectively measuring the chromaticity coordinate values of the CIE-xyY color space corresponding to the display panel under the highest gray scale when the display panel displays a red picture, a green picture and a blue picture;
designating a plurality of gray scale nodes in the gray scale from 0 gray scale to the highest gray scale value, and respectively measuring the chromaticity coordinate values of CIE-xyY color spaces corresponding to the gray scale nodes when the display panel displays a red picture, a green picture and a blue picture;
calculating the chromaticity coordinate value of the CIE-xyY color space corresponding to a plurality of gray scale values between any two gray scale nodes through interpolation or fitting;
determining a first mapping table according to the chromaticity component values of the CIE-xyY-based color space respectively corresponding to different gray scales when the display panel displays a red picture, a green picture and a blue picture;
and obtaining the incidence relation between the gray scale and the brightness according to the data in the first mapping table.
Optionally, in some embodiments of the present application, the step of determining the target brightness value of the first color data based on the gray-scale value of the first color data includes:
searching a corresponding chromaticity component value of the first color data under each gray scale through the first mapping table;
and determining a target brightness value corresponding to the first color data at each gray scale according to a chromaticity diagram of the CIE-xyY color space and a chromaticity component value corresponding to the first color data at each gray scale.
Optionally, in some embodiments of the present application, the step of calculating, by interpolation or fitting, a chromaticity coordinate value of the CIE-xyY color space corresponding to a plurality of gray scale values between any two gray scale nodes further includes:
determining a second mapping table according to different gray scale values respectively corresponding to different brightness levels when the display panel displays a red picture, a green picture and a blue picture;
and obtaining the association relation between the brightness and the chrominance components according to the data in the second mapping table.
Optionally, in some embodiments of the present application, the step of determining the target chroma component value of the second color data based on the target luminance value of the second color data further includes:
reversely searching corresponding target gray-scale values of the display panel under different target brightness values when the display panel displays a red picture, a green picture and a blue picture through the second mapping table;
and searching the target chromaticity component value corresponding to the second color data under each target gray scale value through the first mapping table.
Correspondingly, the embodiment of the present application further provides a display panel, which includes a color management module, where the color management module includes:
the input unit is used for acquiring original color data of the display panel at a target position;
a first conversion unit, configured to convert the original color data into first color data, where the first color data is color data located in a different color space from the original color data;
the second conversion unit is used for calling the incidence relation between gray scale and brightness, determining a target brightness value of the first color data based on the gray scale value of the first color data, and converting the first color data into second color data comprising the target brightness value;
the third conversion unit is used for calling the incidence relation between the brightness and the chrominance components and determining a target chrominance component value of the second color data based on the target brightness value of the second color data; and
and the output unit is used for converting the second color data into object color data which is positioned in the same color space as the original color data according to the object brightness value and the object chromaticity component value.
Optionally, in some embodiments of the present application, the raw color data includes any one of color data of a CIE-sRGB color space and color data of a CIE-AdobeRGB color space; the first color data includes any one of color data of a CIE-XYZ color space, color data of a CIE-xyY color space, color data of a CIE-YUv color space, and color data of a CIE-Yu 'v' color space.
Correspondingly, an embodiment of the present application further provides an electronic device, which includes a controller and a memory, and is characterized in that the controller is configured to execute a plurality of instructions stored in the memory to implement the method described in any one of the above.
The embodiment of the application provides a display method, a display panel and electronic equipment; the display method comprises the following steps: acquiring original color data of the display panel at a target position; then, converting the original color data into first color data, wherein the first color data is color data which is positioned in a different color space from the original color data; calling an incidence relation between a gray scale and brightness, determining a target brightness value of the first color data based on a gray scale value of the first color data, and converting the first color data into second color data comprising the target brightness value; acquiring an incidence relation among the brightness, the red component and the green component, and determining a target chroma component value of the second color data based on a target brightness value of the second color data; finally, according to the target brightness value and the target chromaticity component value, converting the second color data into target color data which is positioned in the same color space as the original color data; according to the display method, the original color data of the display panel at the target position is obtained, then the original color data is converted into the first color data, the first color data is converted into the second color data comprising the target brightness value, the target color component value of the second color data is determined based on the target brightness value of the second color data, and finally the second color data is converted into the target color data which is located in the same color space with the original color data, so that the compensation can be carried out aiming at the spectrum drift of the display panel under different currents, the color coordinate of the same color mixture under different brightness is kept unchanged, the color cast of the display panel is reduced and eliminated, and the color precision of the display panel 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 flowchart of a display method provided in an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating a mapping relationship between a gray scale value and a chrominance component value of an RGB monochrome image in a display panel according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a mapping relationship between luminance values and respective gray-scale values of RGB monochrome images in a display panel according to an embodiment of the present disclosure;
FIG. 4 is a flowchart illustrating a method for calibrating color management module parameters of a display panel according to an embodiment of the present disclosure;
FIG. 5 is a block diagram illustrating a color management module of a display panel according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a controller and a memory in an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the 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.
The embodiment of the application aims at the technical problem that the Micro-LED display in the prior art can cause color cast due to spectral shift along with the change of the driving current, and can improve the technical problem.
The technical solution of the present application will now be described with reference to specific embodiments.
The present invention provides a display method including, but not limited to, the following embodiments and combinations of the following embodiments.
As shown in fig. 1, a flow chart of a display method provided in the embodiment of the present application is shown; specifically, the method comprises the following steps:
s10, acquiring the original color data of the display panel at the target position.
Specifically, the S10 includes:
the method comprises the steps of obtaining original color data of a display panel at a target position through a display card of a calculator or a central processing unit, wherein the original color data is obtained based on an RGB color space determined by the International Commission illumination (CIE for short). Where the CIE-RGB color space is a color space associated with a display system, a computer display uses RGB to display colors, and the colors generated with pixel values (e.g., R-250, G-123, B-23) change the brightness and contrast of the display.
In the embodiment of the present application, the original color data includes any one of color data of a CIE-sRGB color space and color data of a CIE-AdobeRGB color space.
S20, converting the original color data into first color data, where the first color data is color data located in a different color space from the original color data.
Specifically, the S20 includes:
and converting the original color data into first color data through a mathematical formula model, wherein the first color data is color data which is positioned in a different color space from the original color data. Among them, the international commission on illumination proposes the CIE-XYZ color space in order to describe colors more appropriately. The color space has three colors of red, green and blue as the three primary colors, and all other colors can be formed by mixing the three primary colors. When a standard observer sees two light sources of a mixture of light of different wavelengths that exhibit the same color, referred to as "metamerism", then these light sources have the same tristimulus values X, Y and Z, the tristimulus values X, Y and Z of the color representing the specific gravities of the three primary colors. The CIE-XYZ color space is often represented by the CIE1931Chromaticity Diagram (CIE1931Chromaticity Diagram), which has three parameters, where Y represents luminance, x represents red component values and Y represents green component values.
Where X is X/(X + Y + Z) (formula 1), Y is Y/(X + Y + Z) (formula 2), and Z is Z/(X + Y + Z) (formula 3). Since x + y + z is 1, z can be represented by x, y.
In the embodiment of the present application, the first color data is an xyz color space determined based on the international commission on illumination, or any color data based on the international commission on illumination standard that can be converted into the xyz color space. Among them, the CIE-XYZ color space is generally used as an intermediate quantity for conversion of different color spaces, and the CIE-XYZ color space can be converted to and from the CIE-xyY color space, the CIE-Yu 'v' color space, and the like.
In an embodiment of the present application, the first color data includes any one of color data of a CIE-XYZ color space, color data of a CIE-xyY color space, color data of a CIE-Yuv color space, and color data of a CIE-Yu 'v' color space.
Specifically, the conversion formula between the CIE-AdobeRGB color space and the CIE-XYZ color space is as follows:
C linear ＝C in γ (equation 4);
wherein γ is a gamma value of the display panel, and γ is 2.19921875;
further, C in Original three-dimensional chromaticity coordinates, C, input for the display panel linear Subjecting the display panel to gamma value correctionPositive and negative three-dimensional chromaticity coordinates, R linear Is the three-dimensional red component coordinate G of the display panel after gamma value correction linear Is the three-dimensional green component coordinate of the display panel after gamma value correction, B linear X, Y and Z are tristimulus values of CIE-XYZ color space for the three-dimensional blue component coordinates of the display panel after gamma correction.
Further, the conversion formula between the CIE-xyY color space and the CIE-Yu 'v' color space is as follows:
u ═ 2x/(6y-x +1.5) (equation 6);
v' ═ 1.5v ═ 4.5y (6y-x +1.5) (equation 7);
wherein, the Y value in the CIE-Yu 'v' color space is consistent with the Y value in the CIE-xyY color space, and u 'and v' are both chroma values.
S30, invoking an association relationship between gray scales and luminances, determining a target luminance value of the first color data based on a gray scale value of the first color data, and converting the first color data into second color data including the target luminance value.
Specifically, the S30 further includes:
firstly, searching a chroma component value corresponding to the first color data under each gray scale through a first mapping table, wherein the chroma component value comprises a red component value x1 and a green component value y1, and a blue component value z1 can be calculated according to a formula x + y + z being 1; then, a target luminance value Y1 corresponding to the first color data at each gray level can be calculated according to a chromaticity diagram of a CIE-xyY color space, the red component value x1 and the green component value Y1. At this time, the target brightness value Y1 is the target brightness value Y2 in the second color data.
Fig. 2 is a schematic diagram illustrating a mapping relationship between a gray-scale value and a chrominance component value of an RGB monochrome picture in a display panel according to an embodiment of the present disclosure. The first mapping table is a first mapping relationship formed between gray-scale values of the display panel when displaying a red frame, a green frame and a blue frame and chrominance component values of an xyz color space determined based on the commission internationale de l' eclairage. For example, when the display panel displays R256, G512, and B1023 frames, the red component value x and the green component value y corresponding to gray scale values may be obtained through the first mapping table.
And S40, calling the incidence relation between the brightness and the chromaticity component, and determining the value of the target chromaticity component of the second color data based on the target brightness value of the second color data.
Specifically, the S40 further includes:
firstly, reversely searching corresponding target gray-scale values of the display panel under different target brightness values Y2 when the display panel displays a red picture, a green picture and a blue picture through a second mapping unit;
and then, searching the target chroma component value corresponding to the second color data under each target gray scale value through the first mapping table.
As shown in fig. 3, a schematic diagram of a mapping relationship between luminance values and respective gray-scale values of RGB monochrome pictures in the display panel according to the embodiment of the present application is provided.
The second mapping table is a second mapping relationship formed between the luminance value of the xyz color space determined based on the international commission on illumination and the gray level value of the display panel when displaying the red, green and blue images.
S50, converting the second color data into object color data located in the same color space as the original color data according to the object luminance value and the object chrominance component value.
Firstly, obtaining a CIE-xyY color space chromaticity diagram of the second color data according to the target brightness value and the target chromaticity component value; and then, converting the second color data into target color data which is positioned in the same color space with the original color data through formulas I to V.
As shown in fig. 4, a flowchart of a method for correcting parameters of a color management module of a display panel according to an embodiment of the present application is shown; before the display panel leaves a factory, parameters of the color management module need to be corrected, and the parameters are stored in the nonvolatile memory. Specifically, the parameter correction method includes the following steps:
and S01, adjusting and calibrating the gamma voltage of the display panel, so that the initial chromaticity coordinate value of the CIE-xyY color space is within a preset range when the display panel displays a white picture.
Specifically, the step S01 further includes:
firstly, adjusting and calibrating the gamma voltage of the display panel, so that the initial chromaticity coordinate value of an xyz color space determined by the international commission on illumination when the display panel displays a white picture is in a preset range; the gamma voltage of the display panel is adjusted and calibrated to adjust the brightness value of the display panel under different gray scales, and the relative brightness of the input voltage and the output of the display panel is ensured to meet the linear relation of human eyes, so that the CIE-Y value and the CIE-xy coordinate corresponding to each gray scale value reach the standard when a white picture is displayed. Since human eyes perceive luminance linearly, it is necessary to ensure that white balance of white is achieved.
And S02, respectively measuring the chromaticity coordinate values of the CIE-xyY color space corresponding to the highest gray scale when the display panel displays the red picture, the green picture and the blue picture.
Specifically, the step S02 further includes:
and on the basis of the completion of the gamma voltage regulation and under the condition that a color management module of the display panel is closed, respectively measuring the chromaticity coordinate values of the CIE-xyY color space corresponding to the display panel under the highest gray scale when the display panel displays a red picture, a green picture and a blue picture. Wherein if the display panel is n-bit color depth, the highest gray scale is 2 n -1。
And S03, designating a plurality of gray-scale nodes in the gray scale from 0 gray scale to the highest gray scale value, and respectively measuring the chromaticity coordinate values of the CIE-xyY color space corresponding to the gray-scale nodes when the display panel displays a red picture, a green picture and a blue picture.
Specifically, the step S03 further includes:
firstly, a plurality of gray scale nodes are designated from 0 gray scale to the highest gray scale value, and the chromaticity coordinate values of the display panel to the xyY color space under different gray scale nodes when the display panel displays a red picture, a green picture and a blue picture are respectively measured. The number of the gray-scale nodes may be one or more, the selection method is not limited, for example, a 25% gray scale may be selected as one gray-scale node, and the chromaticity coordinate value of the xyz color space under the gray-scale node when the display panel displays a red picture, a green picture, and a blue picture is measured.
And S04, calculating the chromaticity coordinate value of the CIE-xyY color space corresponding to the gray-scale values between any two gray-scale nodes through interpolation or fitting.
Specifically, the step S04 further includes:
first, using the chromaticity coordinate values of the xyY color space at the plurality of gray-scale nodes in step S03 as sampling values, chromaticity coordinate values of the xyY color space determined by the commission internationale de l' eclairage corresponding to the plurality of gray-scale values between any two of the gray-scale nodes are calculated by interpolation or fitting.
S05, determining a first mapping table according to the color component values based on the CIE-xyY color space respectively corresponding to the display panel under different gray scales when displaying the red, green, and blue images, and determining a second mapping table according to the gray scale values respectively corresponding to the display panel under different brightnesses when displaying the red, green, and blue images.
Specifically, the step S05 further includes:
firstly, obtaining the first mapping table and the second mapping table through the chromaticity coordinate values of the CIE-xyY color space corresponding to different gray scales when the display panel displays a red picture, a green picture and a blue picture; the first mapping table is a first mapping relationship formed between the chromaticity component values of the display panel corresponding to different gray scales based on the CIE-xyY color space when the display panel displays a red picture, a green picture and a blue picture, and the second mapping table is a second mapping relationship formed between the chromaticity component values of the display panel corresponding to different gray scales at different brightness when the display panel displays the red picture, the green picture and the blue picture.
S06, storing the adjusted gamma voltage values, the first mapping table and the second mapping table in a non-volatile memory.
Specifically, the step S06 further includes:
storing the adjusted gamma voltage value, the first mapping table and the second mapping table into a nonvolatile memory; wherein the first mapping table is stored in a second conversion unit in the non-volatile memory, and the second mapping table is stored in a third conversion unit in the non-volatile memory.
Correspondingly, the embodiment of the application also provides a display panel, which comprises a color management module. Fig. 5 is a block diagram illustrating a color management module in a display panel according to an embodiment of the present disclosure. Wherein the color management module comprises:
the input unit is used for acquiring original color data of the display panel at a target position;
a first conversion unit, configured to convert the original color data into first color data, where the first color data is color data located in a different color space from the original color data;
the second conversion unit is used for calling the incidence relation between gray scale and brightness, determining a target brightness value of the first color data based on the gray scale value of the first color data, and converting the first color data into second color data comprising the target brightness value;
the third conversion unit is used for calling the incidence relation between the brightness and the chrominance components and determining a target chrominance component value of the second color data based on the target brightness value of the second color data; and
and the output unit is used for converting the second color data into object color data which is positioned in the same color space as the original color data according to the object brightness value and the object chromaticity component value.
In this embodiment, the correction parameter is loaded from the non-volatile memory, and the first mapping table and the second mapping table are generated and stored in the second conversion unit and the third conversion unit, respectively.
Accordingly, as shown in fig. 6, an electronic device provided for the embodiment of the present application includes a memory 601 and a controller 602, where the controller 602 is configured to execute a plurality of instructions stored in the memory 601 to implement the display method of the electronic device as described above.
The memory 601 may be used to store software programs and modules, which may mainly include a program storage area and a data storage area. The controller 602 executes various functional applications and data processing by executing software programs and modules stored in the memory 601.
The controller 602 performs various functions and processes data by operating or executing software programs and/or modules stored in the memory 601 and calling data stored in the memory 601, thereby performing overall monitoring.
It should be noted that, those skilled in the art can understand that all or part of the steps in the various methods of the foregoing embodiments can be implemented by a program to instruct related hardware, where the program can be stored in a computer readable storage medium, such as a memory of an electronic device, and executed by at least one processor in the electronic device, and during the execution process, the flow of the embodiments, such as the charge reminder method, can be included. Wherein the storage module may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
The embodiment of the application provides a display method, a display panel and electronic equipment; the display method comprises the following steps: acquiring original color data of the display panel at a target position; then, converting the original color data into first color data, wherein the first color data is color data which is positioned in a different color space from the original color data; calling an incidence relation between a gray scale and brightness, determining a target brightness value of the first color data based on a gray scale value of the first color data, and converting the first color data into second color data comprising the target brightness value; acquiring an incidence relation among the brightness, the red component and the green component, and determining a target chroma component value of the second color data based on a target brightness value of the second color data; finally, according to the target brightness value and the target chromaticity component value, converting the second color data into target color data which is positioned in the same color space as the original color data; according to the display method, the original color data of the display panel at the target position is obtained, then the original color data is converted into the first color data, the first color data is converted into the second color data comprising the target brightness value, the target color component value of the second color data is determined based on the target brightness value of the second color data, and finally the second color data is converted into the target color data which is located in the same color space as the original color data, so that the compensation can be carried out aiming at the spectrum drift of the display panel under different currents, the color coordinate of the same color mixture under different brightness is kept unchanged, the color cast of the display panel is reduced and eliminated, and the color precision of the display panel is improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. The flexible display device and the driving method thereof provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the embodiments above 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 (9)
1. A display method, comprising:
acquiring original color data of a display panel at a target position;
converting the original color data into first color data, wherein the first color data is color data which is in a different color space from the original color data;
calling an incidence relation between a gray scale and brightness, determining a target brightness value of the first color data based on a gray scale value of the first color data, and converting the first color data into second color data comprising the target brightness value;
calling an incidence relation between brightness and a chrominance component, and determining a target chrominance component value of the second color data based on a target brightness value of the second color data;
and converting the second color data into target color data in the same color space as the original color data according to the target brightness value and the target chromaticity component value.
2. The display method according to claim 1, wherein the original color data includes any one of color data of a CIE-sRGB color space and color data of a CIE-AdobeRGB color space.
3. The display method according to claim 2, wherein the first color data includes any one of color data of a CIE-XYZ color space, color data of a CIE-xyY color space, color data of a CIE-Yuv color space, and color data of a CIE-Yu 'v' color space.
4. The display method according to claim 1, wherein the step of calling the correlation between the gray scale and the brightness comprises:
adjusting and calibrating the gamma voltage of the display panel to ensure that the initial chromaticity coordinate value of the CIE-xyY color space is within a preset range when the display panel displays a white picture;
respectively measuring the chromaticity coordinate values of the CIE-xyY color space corresponding to the display panel under the highest gray scale when the display panel displays a red picture, a green picture and a blue picture;
designating a plurality of gray scale nodes in the gray scale value from 0 gray scale to the highest gray scale value, and respectively measuring the chromaticity coordinate values of CIE-xyY color spaces corresponding to the gray scale nodes when the display panel displays a red picture, a green picture and a blue picture;
calculating the chromaticity coordinate value of the CIE-xyY color space corresponding to a plurality of gray scale values between any two gray scale nodes through interpolation or fitting;
determining a first mapping table according to the chromaticity component values of the CIE-xyY-based color space respectively corresponding to different gray scales when the display panel displays a red picture, a green picture and a blue picture;
and obtaining the incidence relation between the gray scale and the brightness according to the data in the first mapping table.
5. The display method according to claim 4, wherein the step of determining the target luminance value of the first color data based on the gray-scale value of the first color data comprises:
searching a corresponding chromaticity component value of the first color data under each gray scale through the first mapping table;
and determining a target brightness value corresponding to the first color data at each gray scale according to a chromaticity diagram of the CIE-xyY color space and a chromaticity component value corresponding to the first color data at each gray scale.
6. The display method according to claim 4, wherein the step of determining the target chroma component value of the second color data based on the target luminance value of the second color data further comprises:
reversely searching corresponding target gray-scale values of the display panel under different target brightness values when the display panel displays a red picture, a green picture and a blue picture through a second mapping table;
and searching the target chromaticity component value corresponding to the second color data under each target gray scale value through the first mapping table.
7. A display panel comprising a color management module, the color management module comprising:
the input unit is used for acquiring original color data of the display panel at a target position;
a first conversion unit, configured to convert the original color data into first color data, where the first color data is color data located in a different color space from the original color data;
the second conversion unit is used for calling the incidence relation between gray scale and brightness, determining a target brightness value of the first color data based on the gray scale value of the first color data, and converting the first color data into second color data comprising the target brightness value;
the third conversion unit is used for calling the incidence relation between the brightness and the chrominance components and determining a target chrominance component value of the second color data based on the target brightness value of the second color data; and
and the output unit is used for converting the second color data into object color data which is positioned in the same color space as the original color data according to the object brightness value and the object chromaticity component value.
8. The display panel according to claim 7, wherein the original color data includes any one of color data of a CIE-sRGB color space and color data of a CIE-AdobeRGB color space; the first color data includes any one of color data of a CIE-XYZ color space, color data of a CIE-xyY color space, color data of a CIE-YUv color space, and color data of a CIE-Yu 'v' color space.
9. An electronic device comprising a controller and a memory, wherein the controller is configured to execute instructions stored in the memory to implement the method of any one of claims 1 to 6.
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| KR100881028B1 (en) * | 2006-10-12 | 2009-02-05 | 삼성전자주식회사 | Apparatus and method for calibration of gray data |
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