CN115035857A - Display control method and device and electronic equipment - Google Patents
Display control method and device and electronic equipment Download PDFInfo
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- CN115035857A CN115035857A CN202210751178.4A CN202210751178A CN115035857A CN 115035857 A CN115035857 A CN 115035857A CN 202210751178 A CN202210751178 A CN 202210751178A CN 115035857 A CN115035857 A CN 115035857A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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] using an active matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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Abstract
The application provides a display control method and device and electronic equipment, and relates to the technical field of display. The method comprises the following steps: determining the working time of a target display panel, wherein the display area of the target display panel comprises an area to be compensated; determining Mura aging compensation parameters according to the working time of the target display panel; determining the gray scale to be displayed of the area to be compensated according to the input gray scale of the area to be compensated, the initial Mura compensation parameter and the Mura aging compensation parameter; and displaying the picture of the to-be-compensated area according to the to-be-displayed gray scale of the to-be-compensated area. The technical scheme provided by the application can avoid the problem that the Mura phenomenon appears after the display panel is used for a long time.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display control method and apparatus, and an electronic device.
Background
Mura (non-uniform) phenomenon of an Active-matrix organic light-emitting diode (AMOLED) display panel or the like refers to a phenomenon that local brightness of the display panel is not uniform, and Mura compensation is performed when the display panel is shipped, so that the brightness of the display panel is as uniform as possible.
Disclosure of Invention
In view of the foregoing problems, embodiments of the present application provide a display control method and apparatus, and an electronic device, which solve the problem of the Mura phenomenon appearing after a display panel is used for a long time.
In order to achieve the above object, the embodiments of the present application provide the following technical solutions:
a first aspect of an embodiment of the present application provides a display control method, including:
determining the working time of a target display panel, wherein the display area of the target display panel comprises an area to be compensated;
determining Mura aging compensation parameters according to the working time of the target display panel;
determining the gray scale to be displayed of the area to be compensated according to the input gray scale of the area to be compensated, the initial Mura compensation parameter and the Mura aging compensation parameter;
and displaying the picture of the to-be-compensated area according to the to-be-displayed gray scale of the to-be-compensated area.
According to the display control method, the dynamic Mura compensation scheme is adopted, different Mura aging compensation parameters are provided for different working times of the display panel, and the problem that the Mura phenomenon appears after the display panel is used for a long time is solved.
In some possible implementations, determining the Mura aging compensation parameter according to the working time of the target display panel includes:
determining the corresponding relation between the gray scale and the Mura aging compensation parameter according to the working time of the target display panel;
and determining the Mura aging compensation parameters according to the input gray scale of the to-be-compensated area and the corresponding relation between the gray scale and the Mura aging compensation parameters.
In some possible implementation manners, when the working time of the target display panel is greater than or equal to the preset time, determining the gray scale to be displayed in the area to be compensated according to the input gray scale of the area to be compensated, the initial Mura compensation parameter and the Mura aging compensation parameter.
In some possible implementations, the display control method further includes:
and when the working time of the target display panel is less than the preset time, determining the gray scale to be displayed in the area to be compensated according to the input gray scale of the area to be compensated and the initial Mura compensation parameter.
In some possible implementations, the initial Mura compensation parameters include a compensation gain coefficient and a compensation offset;
determining the gray scale to be displayed of the area to be compensated according to the input gray scale, the initial Mura compensation parameter and the Mura aging compensation parameter of the area to be compensated, which comprises the following steps:
multiplying the input gray scale of the area to be compensated by the compensation gain coefficient, adding the compensation offset to the obtained product, and multiplying the obtained sum by the Mura aging compensation parameter to obtain the gray scale to be displayed of the area to be compensated.
In some possible implementations, the display region of the target display panel further includes a non-Mura region;
before determining the Mura aging compensation parameter according to the working time of the target display panel, the method further comprises the following steps:
counting the brightness corresponding to various gray scales of a reference area of the test display panel under different working time, wherein the display area of the test display panel comprises a Mura area and a non-Mura area, and the reference area is positioned in the non-Mura area of the test display panel;
and determining the corresponding relation between the gray scales corresponding to different working times and the Mura aging compensation parameters according to the brightness corresponding to the various gray scales of the reference area of the test display panel at different working times.
In some possible implementation manners, determining a correspondence between the gray scales corresponding to different working times and the Mura aging compensation parameter according to the brightness corresponding to the multiple gray scales of the reference region of the test display panel at different working times includes:
acquiring a relation coefficient between the gray scale and the brightness of a reference area of a test display panel;
and determining the corresponding relation between the gray scales corresponding to different working times and the Mura aging compensation parameter according to the relation coefficient and the brightness corresponding to the multiple gray scales of the test display panel reference region at different working times.
In some possible implementations, testing the working time of the display panel includes a working time reference point T 0 And at the working time reference point T 0 Reference point T of working time thereafter n ，
For each gray level, the working time is T n Aging compensation parameter of time Mura
Wherein gamma is a coefficient of relationship between gray scale and brightness, L n For a working time of T n The input gray scale of the time reference region is the brightness of the time reference region, L 0 For a working time of T 0 The input gray scale of the reference region is the brightness at that gray scale.
In some possible implementations, the display area of the target display panel includes a main screen area and a sub-screen area, and the area to be compensated is located in the sub-screen area.
A second aspect of embodiments of the present application provides a display control apparatus, including:
the first determining module is used for determining the working time of a target display panel, and the display area of the target display panel comprises an area to be compensated;
the second determining module is used for determining Mura aging compensation parameters according to the working time of the target display panel;
the third determining module is used for determining the gray scale to be displayed in the area to be compensated according to the input gray scale of the area to be compensated, the initial Mura compensation parameter and the Mura aging compensation parameter;
and the display driving module is used for displaying the picture of the to-be-compensated area according to the to-be-displayed gray scale of the to-be-compensated area.
In some possible implementations, the second determining module is to:
determining the corresponding relation between the gray scale and the Mura aging compensation parameters according to the working time of the target display panel;
and determining the Mura aging compensation parameters according to the input gray scale of the to-be-compensated area and the corresponding relation between the gray scale and the Mura aging compensation parameters.
In some possible implementations, the third determining module is to:
when the working time of the target display panel is more than or equal to the preset time, determining the gray scale to be displayed in the area to be compensated according to the input gray scale, the initial Mura compensation parameter and the Mura aging compensation parameter of the area to be compensated;
the third determining module is further configured to:
and when the working time of the target display panel is less than the preset time, determining the gray scale to be displayed in the area to be compensated according to the input gray scale of the area to be compensated and the initial Mura compensation parameter.
In some possible implementations, the initial Mura compensation parameters include a compensation gain coefficient and a compensation offset;
the third determining module is to:
multiplying the input gray scale of the area to be compensated by the compensation gain coefficient, adding the compensation offset to the obtained product, and multiplying the obtained sum by the Mura aging compensation parameter to obtain the gray scale to be displayed of the area to be compensated.
In some possible implementations, the display region of the target display panel further includes a non-Mura region; the device still includes: a statistics module to:
counting the brightness corresponding to various gray scales of a reference area of the test display panel under different working time, wherein the display area of the test display panel comprises a Mura area and a non-Mura area, and the reference area is positioned in the non-Mura area of the test display panel;
and determining the corresponding relation between the gray scales corresponding to different working times and the Mura aging compensation parameters according to the brightness corresponding to the various gray scales of the reference area of the test display panel at different working times.
In some possible implementations, the statistics module is to:
acquiring a relation coefficient between the gray scale and the brightness of a reference area of a test display panel;
and determining the corresponding relation between the gray scales corresponding to different working times and the Mura aging compensation parameter according to the relation coefficient and the brightness corresponding to the multiple gray scales of the test display panel reference region at different working times.
In some possible implementations, testing the working time of the display panel includes a working time reference point T 0 And is located at the time of operationInter reference point T 0 Reference point T of working time thereafter n ，
For each gray level, the working time is T n Aging compensation parameter of time Mura
Wherein gamma is a coefficient of relationship between gray scale and brightness, L n For a working time of T n The input gray level of the time reference region is the brightness, L, of the gray level 0 For a working time of T 0 The input gray scale of the reference region is the brightness at that gray scale.
In some possible implementations, the display area of the target display panel includes a main screen area and a sub-screen area, and the area to be compensated is located in the sub-screen area.
A third aspect of embodiments of the present application provides a chip, including: a memory and a processor;
wherein the memory has stored thereon a computer program which, when executed by the processor, carries out the method according to the first aspect.
A fourth aspect of embodiments of the present application provides an electronic device, including: a memory and a processor;
wherein the memory has stored thereon a computer program which, when executed by the processor, carries out the method according to the first aspect.
A fifth aspect of embodiments of the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of the first aspect.
A sixth aspect of embodiments of the present application provides a computer program product comprising computer program code which, when run on a computer, causes the computer to perform the method of the first aspect.
The method determines Mura aging compensation parameters according to the working time of a target display panel by determining the working time of the target display panel; the method comprises the steps of determining the gray scale to be displayed of a to-be-compensated area according to the input gray scale of the to-be-compensated area, the initial Mura compensation parameter and the Mura aging compensation parameter, further displaying the picture of the to-be-compensated area according to the gray scale to be displayed, adopting a dynamic Mura compensation scheme, and providing different Mura aging compensation parameters aiming at different working time of a display panel, so that when the display panel is aged, a better Mura compensation effect can be kept, and the problem that the Mura phenomenon appears after the display panel is used for a long time is solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following descriptions are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a diagram illustrating a luminance characteristic curve of a display panel;
fig. 2 is a schematic flowchart of a display control method according to an embodiment of the present application;
FIG. 3 is a schematic illustration of Mura compensation provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a display control apparatus according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a chip according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The inventor finds that, with the increase of the service time of the AMOLED, the RGB three colors cause brightness attenuation and luminous efficiency reduction due to materials or processes, which causes the color and brightness of the display panel to change, and the change of the brightness may change the Mura degree of the display panel, which may cause the Mura compensation data of the display panel when leaving the factory to be mismatched with the Mura degree after long-time use, resulting in the Mura phenomenon appearing.
The inventor researches and finds that the reason for the problem is mainly that the brightness characteristic curve of the Mura area (the area subjected to Mura compensation at the time of factory shipment) and the brightness characteristic curve of the non-Mura area are different, as shown in fig. 1, a curve 1 is the brightness characteristic curve of the non-Mura area at the time of T0 ', a curve 3 is the brightness characteristic curve of the Mura area at the time of T0 ', a curve 2 is the brightness characteristic curve of the non-Mura area at the time of T1 ', and a curve 4 is the brightness characteristic curve of the Mura area at the time of T1 ', and it can be seen that at the time of T0 ', in order to make the brightness of the non-Mura area and the Mura area consistent, the gray scale of the Mura area needs to be adjusted from g to g 1; at time T1' (after aging), the gray scale of the Mura area needs to be adjusted from g to g0 in order to make the non-Mura area and the Mura area uniform in brightness. It can be seen that after long-time use, the aging degree of the Mura region is inconsistent with that of the non-Mura region, and the Mura degree of the display panel changes, which results in mismatching between the Mura compensation data of the display panel when leaving the factory and the Mura degree of the display panel after long-time use.
In view of the above technical problems, an embodiment of the present application provides a display control method, which adopts a dynamic Mura compensation scheme to provide different Mura aging compensation parameters for different working times of a display panel, so that when the display panel is aged and the Mura degree changes, a better Mura compensation effect can be maintained, and the brightness consistency of the display panel is ensured.
In order to make the aforementioned objects, features and advantages of the embodiments of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few 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.
Fig. 2 is a flowchart illustrating a display control method according to an embodiment of the present application. The execution subject of the method is a display device, which can be implemented by software and/or hardware, and illustratively, the device may include a chip. As shown in fig. 2, the method includes:
s201, determining the working time of a target display panel, wherein the display area of the target display panel comprises an area to be compensated.
The target display panel in step S201 may be an actually used display panel. As described above, the Mura degree of the display panel changes with long-term use of the display panel, and therefore, in the embodiment of the present application, the working time of the display panel is dynamically adjusted, where the working time of the display panel refers to the accumulated working time of the display panel, that is, the current accumulated working time of the display panel. The region to be compensated of the target display panel may be a Mura region. The to-be-compensated region may be a region in which Mura compensation is required when the factory leaves, that is, a region in which compensation is required by using an initial Mura compensation parameter. The display region of the target display panel may further include a non-Mura region.
S202, determining Mura aging compensation parameters according to the working time of the target display panel.
The display panel can carry out Mura compensation when leaving a factory, namely, initial Mura compensation parameters can be determined, and gray scales of a to-be-compensated area of the display panel are adjusted by utilizing the initial Mura compensation parameters, so that the brightness of the display panel is consistent. The initial Mura compensation parameters are set when the display panel leaves a factory, the Mura degree changes along with the increase of the working time of the display panel, and the initial Mura compensation parameters are not adaptive to the Mura degree of the display panel any more.
S203, determining the gray scale to be displayed in the area to be compensated according to the input gray scale, the initial Mura compensation parameter and the Mura aging compensation parameter of the area to be compensated.
It can be understood that when the working time of the display panel is short and the Mura degree of the display panel is not changed, the brightness of the display panel can be consistent by compensating the input gray scale of one frame of picture through the initial Mura compensation parameter. When the working time of the display panel is long and the Mura degree of the display panel is changed, the initial Mura compensation parameter and the Mura aging compensation parameter are required to be used for compensating the input gray scale of the region to be compensated together, and the gray scale to be displayed corresponding to the region to be compensated can be determined, so that the brightness consistency of the display panel is improved. The Mura aging compensation parameter may be related to a change in the Mura level of the display panel after use. The Mura aging compensation parameter is introduced to enable the brightness of a to-be-compensated area in the display area to be close to or the same as the brightness of a non-Mura area under the same input gray scale, so that the Mura degree of the display panel after long-time use can be reduced. non-Mura regions (i.e., regions that exhibit uniformity) may not need to be compensated with the initial Mura compensation parameters and the Mura aging compensation parameters.
And S204, displaying the picture of the to-be-compensated area according to the to-be-displayed gray scale of the to-be-compensated area.
And after the gray scale to be displayed of the area to be compensated is determined, displaying the picture of the area to be compensated according to the gray scale to be displayed, thereby ensuring the brightness consistency of the display panel.
The display control method provided by the embodiment of the application determines the Mura aging compensation parameter according to the working time of the target display panel by determining the working time of the target display panel; the method comprises the steps of determining the gray scale to be displayed of a to-be-compensated area according to the input gray scale of the to-be-compensated area, the initial Mura compensation parameter and the Mura aging compensation parameter, further displaying the picture of the to-be-compensated area according to the gray scale to be displayed, adopting a dynamic Mura compensation scheme, and providing different Mura aging compensation parameters aiming at different working time of a display panel, so that when the display panel is aged and the Mura degree is changed, a better Mura compensation effect can be kept, and the problem that the Mura phenomenon appears after the display panel is used for a long time is solved.
On the basis of the above embodiments, how to determine the Mura aging compensation parameters corresponding to different working times of the target display panel is first described. The Mura aging compensation parameters corresponding to different working times of the target display panel may be obtained by performing experiments on the test display panel in advance.
Optionally, before determining the Mura aging compensation parameter according to the working time of the target display panel, the method further includes: counting the brightness corresponding to various gray scales of a reference area of the test display panel at different working time; determining Mura aging compensation parameters corresponding to the multiple gray scales at different working times according to the brightness corresponding to the multiple gray scales at different working times of the reference region of the test display panel, and further obtaining the corresponding relation between the gray scales corresponding to the different working times and the Mura aging compensation parameters. Optionally, the display area of the test display panel includes a Mura area and a non-Mura area. Optionally, the reference area is located in a non-Mura region of the test display panel. The test display panel can be compensated through the initial Mura compensation parameters, and then the brightness corresponding to various gray scales of the reference area of the test display panel under different working time is counted. The Mura region of the test display panel may be a region that needs to be compensated by the initial Mura compensation parameters.
As the display panel ages, the brightness of the display panel changes, and therefore, the Mura aging compensation parameters at different working times can be determined by counting the brightness of a large number of test display panels at different working times. It should be noted that, in practical applications, for a reference region of a test display panel, a plurality of specific gray scales, for example, 16, 32, 64, 127, 192, 224, etc. may be determined first, the brightness corresponding to the specific gray scales at different working times is counted, so as to determine the Mura aging compensation parameters corresponding to the specific gray scales at different working times, and finally, the Mura aging compensation parameters corresponding to other gray scales are fitted through the Mura aging compensation parameters corresponding to the specific gray scales, so as to obtain the corresponding relationship between the gray scales at different working times and the Mura aging compensation parameters, so as to determine the Mura aging compensation parameters according to the working time of the actually used target display panel. The Mura aging compensation parameters corresponding to different gray scales can be different in the same working time. The test display panel may be one or more. If the number of the test display panels is multiple, the average value of the Mura aging compensation parameters of the multiple test display panels under the same gray scale and the same working time can be used as the final Mura aging compensation parameter. The actually used target display panel has the same or similar structure as the test display panel, and the difference is that the target display panel is compensated by the Mura aging compensation parameter, and the test display panel is not compensated by the Mura aging compensation parameter.
Optionally, the working time of the test display panel includes a working time reference point T 0 And at the working time reference point T 0 Reference point T of working time thereafter n ，
For each gray level, the working time is T n Aging compensation parameter of time Mura
Wherein gamma is a coefficient of relationship between gray scale and brightness, L n For a working time of T n The input gray scale of the time reference region is the brightness of the time reference region, L 0 For a working time of T 0 The input gray scale of the reference region is the brightness at that gray scale.
It will be appreciated that the method is the same or similar when determining the Mura aging compensation parameter for each particular gray level of the reference area of the test display panel, and will be described below with respect to one gray level.
The following Gamma (Gamma) curve formula is satisfied between the gray scale and the brightness of the test display panel:
wherein, G 0 For a working time of T 0 Display gray scale of time reference region, G n The display gray scale of the reference region with the working time of T, L 0 For a working time of T 0 Brightness of the temporal reference region, L n For a working time of T n The brightness of the reference region, G is 255 gray scale, L is the brightness corresponding to 255 gray scale, gamma is the relation coefficient between the gray scale and the brightness, T 0 、T 1 、T 2 ...T N Is to test the display panelThe working time of the system is divided into reference time points according to a certain time period. T is 0 At T 1 、T 2 ...T N Before. T is 1 、T 2 ...T N The corresponding times increase in turn. T is n Can be T 1 、T 2 ...T N And the like. Optionally, the reference region may be a central point of the test display panel, so that the luminance of the compensated region of the target display panel approaches the luminance of the central point of the target display panel. The reference area can be selected according to the requirement, and the embodiment of the present application does not limit this. γ may be 2.2.
The following two formulas can be obtained:
that is, compared to the operating time T 0 Luminance L of temporal reference region 0 Time of operation T n Luminance L of temporal reference region n Change, working time T n Time display gray scale G n Required to be in working time T 0 Time display gray scale G 0 On the basis of the parameters
So that the relationship between the gray level and the brightness is not changed when the brightness is changed, the parameter
Can be used as a Mura aging compensation parameter.
When Mura aging compensation parameters corresponding to different working time are determined through testing the display panel, determining the Mura aging compensation parameters corresponding to multiple gray scales under different working time according to the brightness corresponding to the multiple gray scales under different working time of the reference area of the test display panel by referring to the formulaThe method comprises the following steps: firstly, obtaining a relation coefficient gamma between the gray scale and the brightness of a reference area of a test display panel; determining Mura aging compensation parameters corresponding to the gray scales at different working times according to the relation coefficient gamma between the gray scales and the brightness corresponding to the gray scales at different working times of the reference region of the test display panel, and further determining the gray scales corresponding to the different working times and the Mura aging compensation parameters
The corresponding relation between them.
Optionally, the brightness of a plurality of gray scales of a large number of test display panels at different working times is counted in advance, and the Mura aging compensation parameters corresponding to the different gray scales at different working times corresponding to each test display panel are respectively determined according to the formula 1
Averaging data corresponding to a large number of test display panels to obtain gray scale and Mura aging compensation parameters under different working time
Corresponding relation between the gray scale and Mura aging compensation parameters under different working time
The corresponding relation between the two is stored.
After Mura aging compensation parameters corresponding to each gray scale under different working time are determined by testing the display panel, in the working process of the target display panel, according to the working time of the target display panel, determining the corresponding relation between the gray scale and the Mura aging compensation parameters; and determining the Mura aging compensation parameter corresponding to the input gray scale of the to-be-compensated area at the current working time according to the input gray scale of the to-be-compensated area and the corresponding relation between the gray scale and the Mura aging compensation parameter.
Then, determining the gray scale to be displayed of the area to be compensated according to the input gray scale of the area to be compensated, the initial Mura compensation parameter and the Mura aging compensation parameter, wherein the initial Mura compensation parameter comprises a compensation gain coefficient and a compensation offset; multiplying the input gray scale of the area to be compensated by the compensation gain coefficient, adding the compensation offset to the obtained product, and multiplying the obtained sum by the Mura aging compensation parameter to obtain the gray scale to be displayed of the area to be compensated. Reference is made to the following formula:
wherein Y is output For gray scale to be displayed, X input For inputting gray scale, Gain is compensation Gain coefficient, offset is compensation offset,
and the Mura aging compensation parameters.
It should be noted that, when the working time of the target display panel is less than the preset time, the Mura aging compensation parameter
Is 1. Illustratively, the predetermined time is T 1 And during working time is less than T 1 When the Mura degree of the display panel is not changed, the Mura aging compensation parameter
Is 1, i.e. the Mura compensation is performed using the initial Mura compensation parameters, i.e.:
Y output ＝(Gain*X input +offset)
referring to fig. 3, the Mura compensation data storage unit 301 stores initial Mura compensation parameters including compensation gain coefficients and compensation offsets, the counting unit 302 records operating time of the target display panel, the aging compensation data storage unit 303 stores Mura aging compensation parameters corresponding to respective gray scales at different operating times, and the compensation module 304 determines a gray scale to be displayed in the region to be compensated according to the input gray scale, the initial Mura compensation parameters, and the Mura aging compensation parameters, and outputs the determined gray scale to be displayed to the display module 305 for display.
Optionally, when the working time of the target display panel is less than the preset time, determining the gray scale to be displayed in the to-be-compensated region according to the input gray scale of the to-be-compensated region and the initial Mura compensation parameter. In the initial stage, the gray scale of the area to be compensated of the display panel is adjusted by using the initial Mura compensation parameter, so that the brightness of the display panel can be consistent.
Optionally, when the working time of the target display panel is less than the preset time, determining the to-be-displayed gray scale of the to-be-compensated region according to the input gray scale of the to-be-compensated region and the initial Mura compensation parameter, including: and when the working time is less than the preset time, multiplying the input gray scale of the to-be-compensated area by the compensation gain coefficient, and adding the obtained product to the compensation offset to obtain the sum which is used as the to-be-displayed gray scale of the to-be-compensated area.
Optionally, when the working time of the target display panel is greater than or equal to the preset time, determining the to-be-displayed gray scale of the to-be-compensated region according to the input gray scale of the to-be-compensated region, the initial Mura compensation parameter and the Mura aging compensation parameter. When the working time of the display panel is long and the Mura degree of the display panel is changed, the initial Mura compensation parameter and the Mura aging compensation parameter are required to be used for compensating the input gray scale of the compensation area together so as to improve the brightness consistency of the display panel.
Optionally, the display area of the target display panel includes a main screen area and a sub-screen area. The light transmittance of the auxiliary screen area is greater than or equal to that of the main screen area. The non-display side of the secondary screen area may be provided with a photosensitive element. The photosensitive element may include a camera, a fingerprint sensor, and the like.
The display control method provided by the embodiment of the application can be applied to a display panel with a camera under a screen, and for the display panel with the camera under the screen, the aging trend of an auxiliary screen area where the camera under the screen is located is inconsistent with that of a main screen area, so that the problem that the Mura phenomenon appears after long-time use is easily solved.
Fig. 4 is a schematic structural diagram of a display control apparatus according to an embodiment of the present application. As shown in fig. 3, the display control apparatus 400 includes:
a first determining module 401, configured to determine a working time of a target display panel, where a display area of the target display panel includes an area to be compensated;
a second determining module 402, configured to determine a Mura aging compensation parameter according to a working time of the target display panel;
a third determining module 403, configured to determine a to-be-displayed gray scale of the to-be-compensated region according to the input gray scale of the to-be-compensated region, the initial Mura compensation parameter, and the Mura aging compensation parameter;
and the display driving module 404 is configured to display a picture of the to-be-compensated region according to the to-be-displayed gray scale of the to-be-compensated region.
Optionally, the display area of the target display panel further includes a non-Mura area.
In some embodiments, the second determining module 402 is configured to:
determining the corresponding relation between the gray scale and the Mura aging compensation parameter according to the working time of the target display panel;
and determining the Mura aging compensation parameters according to the input gray scale of the to-be-compensated area and the corresponding relation between the gray scale and the Mura aging compensation parameters.
In some embodiments, the third determination module 403 is configured to: and when the working time of the target display panel is more than or equal to the preset time, determining the gray scale to be displayed in the area to be compensated according to the input gray scale, the initial Mura compensation parameter and the Mura aging compensation parameter of the area to be compensated.
The third determining module 403 is further configured to: and when the working time of the target display panel is less than the preset time, determining the gray scale to be displayed in the area to be compensated according to the input gray scale of the area to be compensated and the initial Mura compensation parameter.
In some embodiments, the initial Mura compensation parameters include a compensation gain factor and a compensation offset;
the third determining module 403 is configured to: and multiplying the input gray scale of the to-be-compensated area by the compensation gain coefficient, adding the compensation offset to the obtained product, and multiplying the obtained sum by the initial Mura compensation parameter to obtain the to-be-displayed gray scale of the to-be-compensated area.
Some embodiments in some embodiments, the display control apparatus 400 further comprises: a statistics module to:
counting the brightness corresponding to various gray scales of a reference area of the test display panel under different working time, wherein the display area of the test display panel comprises a Mura area and a non-Mura area, and the reference area is positioned in the non-Mura area of the test display panel;
determining Mura aging compensation parameters corresponding to the multiple gray scales at different working times according to the brightness corresponding to the multiple gray scales at different working times of the reference area of the test display panel, and further obtaining the corresponding relation between the gray scales corresponding to the different working times and the Mura aging compensation parameters.
In some embodiments, the statistics module is to:
acquiring a relation coefficient between the gray scale and the brightness of a reference area of a test display panel;
and determining Mura aging compensation parameters corresponding to the various gray scales at different working times according to the relation coefficient and the brightness corresponding to the various gray scales of the reference region of the test display panel at different working times, and further obtaining the corresponding relation between the gray scales corresponding to different working times and the Mura aging compensation parameters.
In some embodiments, the working time of the test display panel includes a working time reference point T and a reference point T located at the working time reference point T 0 Reference point T of working time thereafter n ，
For each gray level, the working time is T n Aging compensation parameter of time Mura
Wherein gamma is a coefficient of relationship between gray scale and brightness, L n For a working time of T n The input gray scale of the time reference region is bright when the input gray scale is the gray scaleDegree, L 0 For a working time of T 0 The input gray scale of the reference region is the brightness at that gray scale.
In some embodiments, the display area of the target display panel comprises a main screen area and a secondary screen area, and the area to be compensated is located in the secondary screen area.
The display control device provided in the embodiment of the present application can be used to implement the display control method in the above method embodiments, and the implementation principle and technical effect are similar, which are not described herein again.
Fig. 5 is a schematic structural diagram of a chip according to an embodiment of the present application. As shown in fig. 5, chip 500 includes a memory 501 and a processor 502; the memory 501 and the processor 502 may be connected by a bus 503.
Wherein the memory 501 has stored thereon a computer program which, when being executed by the processor 502, carries out all the method steps in the above-described method embodiments.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 6, the electronic device 600 includes: a memory 601 and a processor 602; the memory 601 and the processor 602 may be connected by a bus 603, and the electronic device 600 further comprises a display panel 604.
Wherein the memory 601 has stored thereon a computer program which, when being executed by the processor 502, carries out all the method steps of the above-described method embodiments.
The embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and when being executed by a processor, the computer program implements all the method steps in the above method embodiments.
Embodiments of the present application further provide a computer program product, which comprises computer program code to, when run on a computer, cause the computer to perform all the method steps in the above method embodiments.
The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A display control method, characterized in that the method comprises:
determining the working time of a target display panel, wherein the display area of the target display panel comprises an area to be compensated;
determining Mura aging compensation parameters according to the working time of the target display panel;
determining the gray scale to be displayed of the area to be compensated according to the input gray scale of the area to be compensated, the initial Mura compensation parameter and the Mura aging compensation parameter;
and displaying the picture of the to-be-compensated area according to the to-be-displayed gray scale of the to-be-compensated area.
2. The method of claim 1, wherein determining Mura aging compensation parameters according to the working time of the target display panel comprises:
determining the corresponding relation between the gray scale and the Mura aging compensation parameter according to the working time of the target display panel;
and determining the Mura aging compensation parameters according to the input gray scale of the area to be compensated and the corresponding relation between the gray scale and the Mura aging compensation parameters.
3. The method according to claim 1, wherein when the working time of the target display panel is greater than or equal to a preset time, determining the gray scale to be displayed of the to-be-compensated region according to the input gray scale of the to-be-compensated region, the initial Mura compensation parameter and the Mura aging compensation parameter;
the method further comprises the following steps:
and when the working time of the target display panel is less than the preset time, determining the gray scale to be displayed in the area to be compensated according to the input gray scale of the area to be compensated and the initial Mura compensation parameter.
4. The method of any of claims 1-3, wherein the initial Mura compensation parameters comprise a compensation gain factor and a compensation offset;
determining the gray scale to be displayed of the area to be compensated according to the input gray scale of the area to be compensated, the initial Mura compensation parameter and the Mura aging compensation parameter, comprising:
and multiplying the input gray scale of the to-be-compensated area by the compensation gain coefficient, adding the compensation offset to the obtained product, and multiplying the obtained sum by the Mura aging compensation parameter to obtain the to-be-displayed gray scale of the to-be-compensated area.
5. The method of claim 2, wherein the display area of the target display panel further comprises a non-Mura area;
before determining the Mura aging compensation parameters according to the working time of the target display panel, the method further comprises the following steps:
counting the brightness corresponding to multiple gray scales of a reference area of a test display panel under different working time, wherein the display area of the test display panel comprises a Mura area and a non-Mura area, and the reference area is positioned in the non-Mura area of the test display panel;
and determining the corresponding relation between the gray scales corresponding to different working times and the Mura aging compensation parameters according to the brightness corresponding to the various gray scales of the reference area of the test display panel at different working times.
6. The method of claim 5, wherein determining the correspondence between the gray scales corresponding to different operating times and the Mura aging compensation parameter according to the brightness corresponding to the plurality of gray scales of the reference region of the test display panel at different operating times comprises:
acquiring a relation coefficient between the gray scale and the brightness of a reference area of a test display panel;
and determining the corresponding relation between the gray scales corresponding to different working times and the Mura aging compensation parameter according to the relation coefficient and the brightness corresponding to the multiple gray scales of the reference area of the test display panel at different working times.
7. The method of claim 5, wherein the working time of the test display panel comprises a working time reference point T 0 And at the working time reference point T 0 Reference point T of working time thereafter n ，
For each gray level, the working time is T n Aging compensation parameter of time Mura
Wherein gamma is a coefficient of relationship between gray scale and brightness, L n For a working time of T n The input gray level of the time reference region is the brightness, L, of the gray level 0 For a working time of T 0 The input gray scale of the reference region is the brightness at that gray scale.
8. The method according to any one of claims 1 to 3, wherein the display area of the target display panel comprises a main screen area and a sub screen area, and the area to be compensated is located in the sub screen area.
9. A display control apparatus, characterized by comprising:
the device comprises a first determining module, a second determining module and a display module, wherein the first determining module is used for determining the working time of a target display panel, and a display area of the target display panel comprises an area to be compensated;
the second determining module is used for determining Mura aging compensation parameters according to the working time of the target display panel;
the third determining module is used for determining the gray scale to be displayed of the area to be compensated according to the input gray scale of the area to be compensated, the initial Mura compensation parameter and the Mura aging compensation parameter;
and the display driving module is used for displaying the picture of the area to be compensated according to the gray scale to be displayed of the area to be compensated.
10. An electronic device, comprising: a memory and a processor;
wherein the memory has stored thereon a computer program which, when executed by the processor, implements the method of any of claims 1 to 8.
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| CN115938306A (en) * | 2023-02-21 | 2023-04-07 | 惠科股份有限公司 | Gamma voltage generator, display device and driving method of display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115938306A (en) * | 2023-02-21 | 2023-04-07 | 惠科股份有限公司 | Gamma voltage generator, display device and driving method of display panel |
| CN115938306B (en) * | 2023-02-21 | 2023-10-27 | 惠科股份有限公司 | Gamma voltage generator, display device and driving method of display panel |
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