CN114283745A - Brightness compensation method of display panel and related device - Google Patents
Brightness compensation method of display panel and related device Download PDFInfo
- Publication number
- CN114283745A CN114283745A CN202111631656.XA CN202111631656A CN114283745A CN 114283745 A CN114283745 A CN 114283745A CN 202111631656 A CN202111631656 A CN 202111631656A CN 114283745 A CN114283745 A CN 114283745A
- Authority
- CN
- China
- Prior art keywords
- gray scale
- brightness
- actual
- compensation
- pixel point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
The application discloses a brightness compensation method of a display panel and a related device, wherein the method comprises the following steps: acquiring an original gray scale and an actual parameter value of each pixel point in the display panel, wherein the actual parameter value comprises an actual gamma value and/or actual display brightness under a preset reference gray scale, the preset reference gray scale is a preset reference gray scale in a target brightness model, and the target brightness model is used for performing full-screen compensation on each pixel point according to the target brightness under the preset reference gray scale; calculating gray scale compensation values corresponding to the original gray scales of the pixel points according to the actual parameters; and taking the gray scale compensation value of each pixel point as the actual gray scale value of each pixel point to perform brightness compensation. The method and the device can solve the problem that in the prior art, due to different compensation effects of all the pixel points, brightness difference exists among the pixel points.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a method and an apparatus for compensating brightness of a display panel, a display apparatus, a computer-readable storage medium, and a computer program product.
Background
The AMOLED (Active Matrix/Organic Light Emitting Diode) display panel has a phenomenon that display brightness is not uniform, resulting in various display traces, which is also called Mura phenomenon.
For better display, Mura compensation is required. The existing compensation methods include two major types, namely external compensation and internal compensation, wherein the optical extraction technology belonging to the external compensation method is widely adopted due to the advantages of simple structure and flexible method. At present, the gamma characteristic of the display panel is utilized to set the target brightness, and the target brightness is used to perform overall panel brightness compensation on each pixel point in the display panel. However, in this brightness compensation method, compensation effects between the pixels are different, resulting in brightness differences between the pixels.
Disclosure of Invention
The embodiment of the application provides a brightness compensation method and a related device of a display panel, which can solve the problem that brightness difference exists among pixel points due to different compensation effects of the pixel points in the prior art.
In one aspect, an embodiment of the present application provides a method for compensating brightness of a display panel, where the method includes:
acquiring an original gray scale and an actual parameter value of each pixel point in the display panel, wherein the actual parameter value comprises an actual gamma value and/or actual display brightness under a preset reference gray scale, the preset reference gray scale is a preset reference gray scale in a target brightness model, and the target brightness model is used for performing full-screen compensation on each pixel point according to the target brightness under the preset reference gray scale;
calculating gray scale compensation values corresponding to the original gray scales of the pixel points according to the actual parameters;
and taking the gray scale compensation value of each pixel point as the actual gray scale value of each pixel point to perform brightness compensation.
Optionally, the calculating a gray scale compensation value corresponding to the original gray scale of each pixel point according to the actual parameter includes:
and calculating to obtain first compensation gray scales corresponding to the original gray scales of the pixels according to the fitting relation between the input gray scales and the compensation gray scales of the pixels, wherein the actual parameters of the pixels are input of the fitting relation, the original gray scales of the pixels are the input gray scales, and the first compensation gray scales are the gray scale compensation values.
Optionally, when the actual parameter values are the actual gamma value and the actual display brightness, the fitting relationship is:
wherein N1 is a gray scale compensation value of the pixel point, Gamma1 is an actual Gamma value of the pixel point, N is an original gray scale of the pixel point, Gamma is a preset Gamma value in the target brightness model, and N is a preset Gamma value in the target brightness modeltypicalIs the preset reference gray scale, LtypicalThe preset reference gray scale N is used when the target brightness model is usedtypicalThe target luminance of LrealityAnd displaying the actual brightness.
Optionally, when the actual parameter value is an actual gamma value, the fitting relationship is:
wherein N1 is a gray scale compensation value of the pixel point, Gamma1 is an actual Gamma value of the pixel point, N is an original gray scale of the pixel point, Gamma is a preset Gamma value in the target brightness model, and N is a preset Gamma value in the target brightness modeltypicalThe preset reference gray scale is obtained.
Optionally, when the actual parameter value is actual display brightness, the fitting relationship is:
wherein N1 is the gray scale compensation value of the pixel point, N is the original gray scale of the pixel point, Gamma is the preset Gamma value in the target brightness model, and LtypicalThe preset reference gray scale N is used when the target brightness model is usedtypicalThe target luminance of LrealityAnd displaying the actual brightness.
Optionally, before the obtaining of the original gray scale and the actual parameter value of each pixel point in the display panel, the method further includes:
constructing a target brightness model between the overall brightness of the display panel and the input gray scale;
constructing an actual brightness model between the pixel brightness of each pixel point and the actual gray scale of each pixel point;
and processing the target brightness model and the actual brightness model under the condition that the overall brightness is equal to the pixel point brightness of each pixel point to obtain the fitting relation between the input gray scale and the compensation gray scale of each pixel point.
On the other hand, an embodiment of the present application provides a brightness compensation apparatus for a display panel, the apparatus including:
the acquisition module is used for acquiring an original gray scale and an actual parameter value of each pixel point in the display panel, wherein the actual parameter value comprises an actual gamma value and/or actual display brightness under a preset reference gray scale, the preset reference gray scale is a preset reference gray scale in a target brightness model, and the target brightness model is used for performing full-screen compensation on each pixel point according to the target brightness under the preset reference gray scale;
the calculation module is used for calculating a gray scale compensation value corresponding to the original gray scale of each pixel point according to the actual parameters;
and the compensation module is used for performing brightness compensation by taking the gray scale compensation value of each pixel point as the actual gray scale value of each pixel point.
In another aspect, an embodiment of the present application provides a display device, including:
a processor and a memory storing computer program instructions;
the processor, when executing the computer program instructions, implements the brightness compensation method for a display panel of the above aspect.
In still another aspect, embodiments of the present application provide a computer storage medium, on which computer program instructions are stored, and the computer program instructions, when executed by a processor, implement the brightness compensation method for a display panel of the above aspect.
In still another aspect, an embodiment of the present application provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the computer program implements the brightness compensation method for a display panel according to the above aspect.
The brightness compensation method and the related device of the display panel can acquire the original gray scale of each pixel point in the display panel; calculating gray scale compensation values corresponding to the original gray scales of all the pixel points; therefore, the gray scale compensation value of each pixel point is used as the actual gray scale value of each pixel point to carry out brightness compensation. The gray scale compensation value is obtained according to the actual parameter value of each pixel, the actual parameter value comprises the actual gamma value and/or the actual display brightness under the reference gray scale, the reference gray scale is the reference gray scale preset in the target brightness model, and the target brightness model is used for performing full-screen compensation on each pixel according to the target brightness under the reference gray scale. Therefore, gray scale brightness compensation is carried out on each pixel point according to actual parameters influencing self brightness display, compensation effects among the pixel points are consistent, and brightness display differences are eliminated, so that the problem that brightness differences exist among the pixel points due to different compensation effects among the pixel points in the prior art is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram illustrating the determination of compensation values for a target luminance model in the prior art;
FIG. 2 is a flowchart illustrating a method for compensating brightness of a display panel according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a target luminance curve and an actual luminance curve of each pixel point in the luminance compensation method for a display panel according to the present application;
FIG. 4 is a schematic structural diagram of a brightness compensation apparatus of a display panel according to another embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a display device according to still another embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the AMOLED display panel, characteristics of a TFT (Thin Film Transistor) and an OLED (Organic Light-Emitting Diode) are not consistent, which easily causes a phenomenon of brightness inconsistency under the same gray scale and data voltage, that is, a Mura phenomenon. The prior art methods for Mura compensation are mainly divided into two main categories, i.e., internal compensation and external compensation. The internal compensation is a compensation of a pixel sub-circuit built by using a TFT inside a pixel, and the external compensation is a compensation method of sensing an electrical or optical characteristic of a pixel by an external driving circuit or device.
The external compensation method includes an optical extraction technique, also called Demura, which specifically processes the display module with Mura defect through a sub-pixel optical imaging technique and a software algorithm to eliminate the Mura phenomenon. At the present stage, the Demura structure is simple, and the method is flexible and widely adopted.
Referring to fig. 1, in the prior art, when performing Demura compensation, a gamma characteristic of a display panel is usually used to determine a compensation value, an average brightness under a reference gray scale is given as a target brightness, a gray scale compensation value or a DAC (Digital to analog converter) value is set for each pixel point of a full panel according to the set target brightness for direct compensation, or a binary one-time or unitary one-time fitting relationship between a display gray scale and a compensation gray scale is used to obtain the compensation value for compensation under a standard brightness of the pixel point by using the set target brightness.
However, in this brightness compensation method, the compensation effect between each pixel point is different, so that the brightness difference still exists between each pixel point. The problem that brightness difference exists among pixel points due to different compensation effects of the pixel points after brightness compensation of a display panel in the prior art is solved. A solution for brightness compensation of a display panel is desired to solve the above problems.
Therefore, the embodiment of the application provides a brightness compensation method of a display panel and a related device. First, a method for compensating brightness of a display panel according to an embodiment of the present application will be described.
Fig. 2 is a flowchart illustrating a brightness compensation method for a display panel according to an embodiment of the present application. As shown in fig. 2, the method may include the steps of:
s210, obtaining an original gray scale and an actual parameter value of each pixel point in the display panel, wherein the actual parameter value comprises an actual gamma value and/or actual display brightness under a preset reference gray scale, the preset reference gray scale is a preset reference gray scale in a target brightness model, and the target brightness model is used for performing full-screen compensation on each pixel point according to the target brightness under the preset reference gray scale.
S220, calculating a gray scale compensation value corresponding to the original gray scale of each pixel point according to the actual parameters.
And S230, performing brightness compensation by taking the gray scale compensation value of each pixel point as the actual gray scale value of each pixel point.
The method and the device can acquire the original gray scale of each pixel point in the display panel; calculating gray scale compensation values corresponding to the original gray scales of all the pixel points; therefore, the gray scale compensation value of each pixel point is used as the actual gray scale value of each pixel point to carry out brightness compensation. The gray scale compensation value is obtained according to the actual parameter value of each pixel, the actual parameter value comprises the actual gamma value and/or the actual display brightness under the reference gray scale, the reference gray scale is the reference gray scale preset in the target brightness model, and the target brightness model is used for performing full-screen compensation on each pixel according to the target brightness under the reference gray scale. Therefore, gray scale brightness compensation is carried out on each pixel point according to actual parameters influencing self brightness display, compensation effects among the pixel points are consistent, and brightness display differences are eliminated, so that the problem that brightness differences exist among the pixel points due to different compensation effects among the pixel points in the prior art is solved.
In some embodiments, in S210, when the target content needs to be displayed on the display panel, the display panel receives an image frame corresponding to the target content to be displayed, and based on the image frame, a brightness level required for displaying the target content may be determined, that is, for each content that can be displayed on the display panel, each pixel point of the display panel has a determined original gray level.
The actual parameter value is determined by the influence factor of the brightness difference between the pixels of the display panel, wherein the actual gamma value of each pixel refers to the actual relation between the gray scale and the brightness of each pixel.
The actual gamma value and the actual display brightness of each pixel point can be obtained by testing the display panel. For example, a plurality of different gray scales may be selected as the test gray scale, the actually measured brightness of each pixel point under the test gray scale is obtained by shooting with a CCD Camera (Charge Coupled Device Camera), the plurality of test gray scales and the actually measured brightness corresponding thereto are fitted to form an actual gamma curve of each pixel point, and the actual gamma value of each pixel point can be obtained according to the actual gamma curve. In some examples, the test gray scale may further include a preset reference gray scale, and the measured brightness of the preset reference gray scale is the actual display brightness of each pixel point under the preset reference gray scale.
It should be noted that the preset reference gray level is preset in the target brightness model, and may be the highest gray level under standard brightness, for example, the 255 gray level, or other gray levels, for example, the 192 gray level. The target brightness model is a model used when performing full-screen Demura by using the average brightness as the target brightness in a screen display area of a display panel.
The target brightness model refers to a preset reference gray level N under a standard Gamma value (Gamma)typicalTarget luminance L oftypicalThe obtained input gray level N and the overall brightness L of the display panelnThe relationship (2) of (c). Namely, the target luminance model is:
Ln＝(N/Ntypical)Gamma*Ltypical (1)
wherein L isnThe overall brightness of the display panel under Gamma with a gray scale of N is also known as the display brightness of each pixel point in the display panel, LtypicalFor presetting a reference gray scale NtypicalThe target brightness of (1).
Specifically, in practice, the actual gamma value of each pixel point may have a certain difference from the standard gamma value, and the actual display brightness of each pixel point under the same gray scale is also different from the brightness obtained by the target brightness model.
Illustratively, refer to fig. 3, wherein the curve of Ln1 is a gamma curve formed by a target brightness model, and the functional relationship thereof satisfies Ln1 ═ g(N/255)2.2600nit, Ln2 and Ln3 are gamma curves of different pixel points obtained by testing according to actual brightness, wherein points in the Ln2 curve meet the functional relationship Ln2 ═ (N/255)2.2700nit, Ln3 curve satisfies the functional relationship Ln1 ═ (N/255)2.5*600nit。
Taking the 192 gray level as an example, the overall brightness (i.e. average brightness) of the display panel is about 350nit, but is actually affected by the difference between the maximum brightness of the pixels, for example, the maximum display brightness in Ln2 is not 600nit, but 700nit, in this case, the actual display brightness is 400nit at the actual 192 gray level. And Ln3 shows an actual gamma value of 2.5, which is different from the standard gamma 2.2 satisfied by the target brightness model, that is, actually, due to the gamma difference between the pixels, the actual display brightness at 192 gray levels is 300 nit.
Therefore, it can be considered that the influence factors of the brightness difference between the pixels mainly include: gamma difference exists between the pixel points, namely, the mapping relation between the gray scale and the brightness of the pixel points is different; the display brightness corresponding to the reference gray scale between the pixel points is different.
Therefore, in order to eliminate the brightness difference between the pixel points, the actual gamma value and/or the actual display brightness under the preset reference gray scale can be used as the actual parameter value, and then the gray scale compensation value corresponding to the original gray scale of each pixel point is calculated according to the obtained actual parameter.
In some embodiments, the gray scale compensation value is a gray scale value that is actually input to eliminate the brightness display difference of each pixel point and achieve the display brightness corresponding to the original gray scale. The process of calculating the gray scale compensation value may include:
and calculating to obtain first compensation gray scales respectively corresponding to the original gray scales of the pixel points according to the fitting relation between the input gray scales and the compensation gray scales of the pixel points. The actual parameter of each pixel point is the input of the fitting relation, the original gray scale of each pixel point is the input gray scale, and the first compensation gray scale is the gray scale compensation value.
It should be noted that the fitting relationship between the input gray scale and the compensation gray scale of each pixel point can be obtained by fitting before the display panel leaves the factory. That is, before S210, the method for compensating luminance of a display panel may further include:
constructing a target brightness model between the overall brightness and the input gray scale of the display panel; constructing an actual brightness model between the pixel brightness of each pixel and the actual gray scale of each pixel; and processing the target brightness model and the actual brightness model under the condition that the overall brightness is equal to the pixel brightness of each pixel point to obtain the fitting relation between the input gray scale and the compensation gray scale of each pixel point.
The sequence of constructing the target brightness model and the actual brightness model can be executed simultaneously, or the sequence can be changed, so long as the actual brightness model and the target brightness model can be obtained before the fitting relationship between the input gray scale and the compensation gray scale of each pixel point is obtained through processing.
The target brightness model is the aforementioned model, which takes the average brightness of the display panel as the target brightness and is used for compensating the full-screen display area of the display panel. On the basis, an actual brightness model of each pixel point can be constructed according to the brightness data of each pixel point obtained through testing, the actual brightness model of each pixel point is different, and the actual brightness model can describe the relationship between the brightness of the pixel point and the actual gray scale under the actual gamma value of the pixel point.
The actual brightness model of each pixel point can be expressed by the following formula (2), namely
Ln1＝(N1/Ntypical)Gamma1*Lreality (2)
Wherein Gamma1 is the actual Gamma value of the pixel, Ln1The brightness of pixel point of gray scale N1 under Gamma1, LrealityFor presetting a reference gray scale NtypicalThe actual brightness of the panel.
In formulas (1) and (2), L is the case where the overall brightness of the display panel is equal to the actual pixel brightness of each pixeln＝Ln1Under the condition (2), the relation between the input gray scale and the actual gray scale of each pixel point can be obtained by solving, and the actual gray scaleThe order is to compensate the brightness display difference of the pixels, and finally the compensation gray-scale value actually output by each pixel.
It should be noted that the application of the specific fitting relationship needs to be determined according to the obtained actual parameters of each pixel point.
In some examples, when the actual parameters are the actual gamma value of each pixel and the actual display brightness of the pixel under the preset reference gray scale, during brightness compensation, the actual gamma value of each pixel and the actual display brightness under the preset reference gray scale may be obtained by looking up a table, and then the input gray scale and the actual parameter value are substituted into a formula to be calculated according to a fitting relationship, that is, the following formula (3), so as to obtain the compensation gray scale value of each pixel.
Wherein N1 is the gray scale compensation value of the pixel, Gamma1 is the actual Gamma value of the pixel, N is the original gray scale of the pixel, Gamma is the preset Gamma value in the target brightness model, N is the gray scale compensation value of the pixel, N is the actual Gamma value of the pixel, N is the original gray scale of the pixel, and the Gamma is the preset Gamma value in the target brightness modeltypicalTo preset a reference gray level, LtypicalPresetting a reference gray scale N when using the target brightness modeltypicalTarget luminance of lower, LrealityIs the actual display brightness.
It should be noted that the preset reference gray level N is described abovetypicalA preset Gamma value Gamma and a target brightness LtypicalThe predetermined reference gray level may be the highest gray level under the standard brightness, or may be other typical gray levels, such as 192 gray levels. The preset gamma value may be, for example, gamma 2.2.
In some examples, for example, when the actual brightness difference is small under the preset reference gray scale of each pixel, even the actual brightness is the same, the formula (3) is simplified to the following formula (4), and only the actual gamma value is used as the actual parameter, and the input gray scale and the actual gamma value are substituted into the formula (4) for calculation to obtain the gray scale compensation value of each pixel.
Wherein N1 is a gray scale compensation value of the pixel point, Gamma1 is an actual Gamma value of the pixel point, N is an original gray scale of the pixel point, Gamma is a preset Gamma value in the target brightness model, and N is a preset Gamma value in the target brightness modeltypicalThe preset reference gray scale is obtained.
In some examples, for example, under the condition that the actual gamma value of each pixel is the same as or very similar to the standard gamma value, the influence factor of the display unevenness of each pixel is only the actual brightness difference of each pixel under the preset reference gray scale, that is, the actual parameter value may be set as the actual display brightness of each pixel under the preset reference gray scale, and the input gray scale and the actual display brightness are substituted into the following formula (5) obtained by simplifying the formula (3) to calculate, so as to obtain the compensation gray scale value of each pixel.
Wherein N1 is the gray scale compensation value of the pixel, N is the original gray scale of the pixel, Gamma is the preset Gamma value in the target brightness model, and LtypicalPresetting a reference gray scale N when using the target brightness modeltypicalThe target luminance of LrealityIs the actual display brightness.
Gamma and L as described abovetypicalMay be constant, for example Gamma may be 2.2. On the basis, the actual display brightness of each pixel point under the preset reference gray scale can be set in multiple sections in different intervals, for example, L is used from 0 gray scale to 128 gray scalereality1129 to 255 grayscales using Lreality2Therefore, the test time of actual display brightness of each pixel point can be simplified, and the effect of brightness compensation is achieved.
In some examples, the determined data signal value of each pixel point can be finally obtained according to the gray scale compensation value of each pixel point, and the data signal can be provided for the driving transistor of the pixel circuit in each pixel point according to the determined data signal value, so that the gray scale of each pixel point reaches the gray scale compensation value, and therefore brightness compensation of each pixel point according to each gray scale compensation value is achieved, the problem that brightness difference exists among the pixel points due to different compensation effects of each pixel point in the prior art can be solved, and the display effect of the display panel is improved.
Fig. 4 is a schematic diagram illustrating a hardware structure of a luminance compensation apparatus of a display panel according to an embodiment of the present application. In fig. 4, the luminance compensation apparatus of the display panel includes:
an obtaining module 410, configured to obtain an original gray scale and an actual parameter value of each pixel point in the display panel, where the actual parameter value includes an actual gamma value and/or actual display brightness at a preset reference gray scale, the preset reference gray scale is a reference gray scale preset in a target brightness model, and the target brightness model is configured to perform full-screen compensation on each pixel point according to the target brightness at the preset reference gray scale;
a calculating module 420, configured to calculate, according to the actual parameter, a gray scale compensation value corresponding to the original gray scale of each pixel point;
the compensation module 430 is configured to perform luminance compensation by using the gray scale compensation value of each pixel point as an actual gray scale value of each pixel point.
In an embodiment, the calculation module 420 may include:
the calculation unit may be configured to calculate, according to a fitting relationship between an input gray scale and a compensation gray scale of each pixel point, to obtain first compensation gray scales corresponding to original gray scales of each pixel point, where the actual parameter of each pixel point is an input of the fitting relationship, the original gray scale of each pixel point is the input gray scale, and the first compensation gray scale is the gray scale compensation value.
In another embodiment, when the actual parameter values are the actual gamma values and the actual display brightness, the fitting relationship involved in the calculating unit is:
wherein N1 is a gray scale compensation value of the pixel point, Gamma1 is an actual Gamma value of the pixel point, N is an original gray scale of the pixel point, Gamma is a preset Gamma value in the target brightness model, and N is a preset Gamma value in the target brightness modeltypicalIs the preset reference gray scale, LtypicalThe preset reference gray scale N is used when the target brightness model is usedtypicalThe target luminance of LrealityAnd displaying the actual brightness.
In another embodiment, when the actual parameter value is the actual gamma value, the fitting relationship involved in the calculating unit is:
wherein N1 is a gray scale compensation value of the pixel point, Gamma1 is an actual Gamma value of the pixel point, N is an original gray scale of the pixel point, Gamma is a preset Gamma value in the target brightness model, and N is a preset Gamma value in the target brightness modeltypicalThe preset reference gray scale is obtained.
In a further embodiment, when the actual parameter value is the actual display luminance, the fitting relationship involved by the calculating unit is:
wherein N1 is the gray scale compensation value of the pixel point, N is the original gray scale of the pixel point, Gamma is the preset Gamma value in the target brightness model, and LtypicalThe preset reference gray scale N is used when the target brightness model is usedtypicalThe target luminance of LrealityAnd displaying the actual brightness.
In another embodiment, the brightness compensation apparatus of the display panel further includes:
the first construction module is used for constructing a target brightness model between the overall brightness of the display panel and the input gray scale;
the second construction module is used for constructing an actual brightness model between the pixel brightness of each pixel point and the actual gray scale of each pixel point;
and the processing module is used for processing the target brightness model and the actual brightness model under the condition that the overall brightness is equal to the pixel point brightness of each pixel point to obtain the fitting relation between the input gray scale and the compensation gray scale of each pixel point.
Fig. 5 shows a hardware structure diagram of a display device provided in an embodiment of the present application. The display device may be at least one of a display panel, a home appliance, a wearable device, a mobile terminal, a virtual display device, and a display device in an automobile. The display device comprises a processor 501 and a memory 502 in which computer program instructions are stored.
Specifically, the processor 501 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured to implement one or more Integrated circuits of the embodiments of the present Application.
The memory 502 may include Read Only Memory (ROM), flash memory devices, Random Access Memory (RAM), magnetic disk storage media devices, optical storage media devices, electrical, optical, or other physical/tangible memory storage devices. Thus, in general, the memory 502 comprises one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software comprising computer-executable instructions and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the methods in accordance with the above-described aspects of the disclosure.
The processor 501 reads and executes the computer program instructions stored in the memory 502 to implement the brightness compensation method of the display panel in any of the above embodiments.
In one example, the display device may also include a communication interface 503 and a bus 510. As shown in fig. 5, the processor 501, the memory 502, and the communication interface 503 are connected via a bus 510 to complete communication therebetween.
The communication interface 503 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present application.
The display device may be based on a brightness compensation method of a display panel, thereby implementing the brightness compensation method and apparatus of the display panel described in conjunction with fig. 1 to 4.
In addition, in combination with the brightness compensation method of the display panel in the foregoing embodiments, the embodiments of the present application may provide a computer storage medium to implement. The computer storage medium having computer program instructions stored thereon; the computer program instructions, when executed by a processor, implement a brightness compensation method for a display panel of any of the above embodiments.
In addition, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps and the corresponding contents of the foregoing method embodiments can be implemented.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that in the embodiment of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention, and these modifications or substitutions are intended to be included in the scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method for compensating brightness of a display panel, comprising:
acquiring an original gray scale and an actual parameter value of each pixel point in the display panel, wherein the actual parameter value comprises an actual gamma value and/or actual display brightness under a preset reference gray scale, the preset reference gray scale is a preset reference gray scale in a target brightness model, and the target brightness model is used for performing full-screen compensation on each pixel point according to the target brightness under the preset reference gray scale;
calculating gray scale compensation values corresponding to the original gray scales of the pixel points according to the actual parameters;
and taking the gray scale compensation value of each pixel point as the actual gray scale value of each pixel point to perform brightness compensation.
2. The method of claim 1, wherein said calculating gray scale compensation values corresponding to the original gray scales of each of the pixel points according to the actual parameters comprises:
and calculating to obtain first compensation gray scales corresponding to the original gray scales of the pixels according to the fitting relation between the input gray scales and the compensation gray scales of the pixels, wherein the actual parameters of the pixels are input of the fitting relation, the original gray scales of the pixels are the input gray scales, and the first compensation gray scales are the gray scale compensation values.
3. The method of claim 2, wherein when the actual parameter values are the actual gamma values and the actual display brightness, the fitting relationship is:
wherein N1 is a gray scale compensation value of the pixel point, Gamma1 is an actual Gamma value of the pixel point, N is an original gray scale of the pixel point, Gamma is a preset Gamma value in the target brightness model, and N is a preset Gamma value in the target brightness modeltypicalIs the preset reference gray scale, LtypicalThe preset reference gray scale N is used when the target brightness model is usedtypicalThe target luminance of LrealityAnd displaying the actual brightness.
4. The method of claim 2, wherein when the actual parameter value is the actual gamma value, the fitting relationship is:
wherein N1 is a gray scale compensation value of the pixel point, Gamma1 is an actual Gamma value of the pixel point, N is an original gray scale of the pixel point, Gamma is a preset Gamma value in the target brightness model, and N is a preset Gamma value in the target brightness modeltypicalThe preset reference gray scale is obtained.
5. The method of claim 2, wherein when the actual parameter value is the actual display brightness, the fitting relationship is:
wherein N1 is the gray scale compensation value of the pixel point, N is the original gray scale of the pixel point, Gamma is the preset Gamma value in the target brightness model, and LtypicalThe preset reference gray scale N is used when the target brightness model is usedtypicalThe target luminance of LrealityAnd displaying the actual brightness.
6. The method according to any one of claims 2 to 5, wherein before the obtaining of the original gray scale and the actual parameter value of each pixel point in the display panel, the method further comprises:
constructing a target brightness model between the overall brightness of the display panel and the input gray scale;
constructing an actual brightness model between the pixel brightness of each pixel point and the actual gray scale of each pixel point;
and processing the target brightness model and the actual brightness model under the condition that the overall brightness is equal to the pixel point brightness of each pixel point to obtain the fitting relation between the input gray scale and the compensation gray scale of each pixel point.
7. An apparatus for compensating brightness of a display panel, the apparatus comprising:
the acquisition module is used for acquiring an original gray scale and an actual parameter value of each pixel point in the display panel, wherein the actual parameter value comprises an actual gamma value and/or actual display brightness under a preset reference gray scale, the preset reference gray scale is a preset reference gray scale in a target brightness model, and the target brightness model is used for performing full-screen compensation on each pixel point according to the target brightness under the preset reference gray scale;
the calculation module is used for calculating a gray scale compensation value corresponding to the original gray scale of each pixel point according to the actual parameters;
and the compensation module is used for performing brightness compensation by taking the gray scale compensation value of each pixel point as the actual gray scale value of each pixel point.
8. A display device, characterized in that the display device comprises: a processor and a memory storing computer program instructions;
the processor, when executing the computer program instructions, implements a method of brightness compensation for a display panel as claimed in any one of claims 1 to 6.
9. A computer-readable storage medium having computer program instructions stored thereon, which when executed by a processor implement the method of brightness compensation of a display panel according to any one of claims 1 to 6.
10. A computer program product comprising a computer program which, when executed by a processor, implements a method of brightness compensation for a display panel as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111631656.XA CN114283745B (en) | 2021-12-28 | 2021-12-28 | Brightness compensation method for display panel and related device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111631656.XA CN114283745B (en) | 2021-12-28 | 2021-12-28 | Brightness compensation method for display panel and related device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114283745A true CN114283745A (en) | 2022-04-05 |
| CN114283745B CN114283745B (en) | 2023-08-18 |
Family
ID=80877412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111631656.XA Active CN114283745B (en) | 2021-12-28 | 2021-12-28 | Brightness compensation method for display panel and related device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114283745B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114639342A (en) * | 2022-04-25 | 2022-06-17 | 北京欧铼德微电子技术有限公司 | Display panel brightness control method and device, display equipment and electronic equipment |
| CN114783009A (en) * | 2022-04-29 | 2022-07-22 | 云谷（固安）科技有限公司 | Method for adjusting fingerprint brightness, display panel, device, processing equipment and terminal |
| CN115206224A (en) * | 2022-07-25 | 2022-10-18 | 武汉天马微电子有限公司 | Brightness adjusting method, device, equipment, medium, display panel and display device |
| CN118413640A (en) * | 2024-07-02 | 2024-07-30 | 杭州海康威视数字技术股份有限公司 | Image display method, device, electronic equipment and program product |
| CN119380146A (en) * | 2025-01-02 | 2025-01-28 | 苏州华兴源创科技股份有限公司 | Display panel brightness compensation model construction method, compensation method and device |
| CN119380146B (en) * | 2025-01-02 | 2025-04-11 | 苏州华兴源创科技股份有限公司 | Display panel brightness compensation model construction method, compensation method and device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104021759A (en) * | 2014-05-30 | 2014-09-03 | 京东方科技集团股份有限公司 | Luminance supplementing method and device for display device, and display device |
| CN105741762A (en) * | 2016-03-31 | 2016-07-06 | 深圳市华星光电技术有限公司 | Method for eliminating Mura of OLED display panel |
| CN105741764A (en) * | 2016-03-31 | 2016-07-06 | 深圳市华星光电技术有限公司 | Method for eliminating Mura of OLED display panel |
| CN106847157A (en) * | 2017-03-24 | 2017-06-13 | 上海天马有机发光显示技术有限公司 | The luminance compensation method and device of a kind of display panel |
| CN107610649A (en) * | 2017-10-26 | 2018-01-19 | 上海天马有机发光显示技术有限公司 | The optical compensation method and device of a kind of display panel |
| CN107958651A (en) * | 2017-12-15 | 2018-04-24 | 京东方科技集团股份有限公司 | The optical compensation method and device of a kind of display panel, display device |
| CN108492772A (en) * | 2018-03-30 | 2018-09-04 | 京东方科技集团股份有限公司 | A kind of Gamma adjusting methods and Gamma regulating systems |
| CN110364116A (en) * | 2019-07-15 | 2019-10-22 | 云谷（固安）科技有限公司 | Gray level compensation method, gray scale compensation device and display module |
| CN110796979A (en) * | 2019-11-14 | 2020-02-14 | 华兴源创(成都)科技有限公司 | Driving method and driving device of display panel |
| CN112397024A (en) * | 2020-11-23 | 2021-02-23 | 新相微电子(上海)有限公司 | Intelligent dynamic compensation system and method of OLED |
-
2021
- 2021-12-28 CN CN202111631656.XA patent/CN114283745B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104021759A (en) * | 2014-05-30 | 2014-09-03 | 京东方科技集团股份有限公司 | Luminance supplementing method and device for display device, and display device |
| CN105741762A (en) * | 2016-03-31 | 2016-07-06 | 深圳市华星光电技术有限公司 | Method for eliminating Mura of OLED display panel |
| CN105741764A (en) * | 2016-03-31 | 2016-07-06 | 深圳市华星光电技术有限公司 | Method for eliminating Mura of OLED display panel |
| CN106847157A (en) * | 2017-03-24 | 2017-06-13 | 上海天马有机发光显示技术有限公司 | The luminance compensation method and device of a kind of display panel |
| CN107610649A (en) * | 2017-10-26 | 2018-01-19 | 上海天马有机发光显示技术有限公司 | The optical compensation method and device of a kind of display panel |
| CN107958651A (en) * | 2017-12-15 | 2018-04-24 | 京东方科技集团股份有限公司 | The optical compensation method and device of a kind of display panel, display device |
| CN108492772A (en) * | 2018-03-30 | 2018-09-04 | 京东方科技集团股份有限公司 | A kind of Gamma adjusting methods and Gamma regulating systems |
| CN110364116A (en) * | 2019-07-15 | 2019-10-22 | 云谷（固安）科技有限公司 | Gray level compensation method, gray scale compensation device and display module |
| CN110796979A (en) * | 2019-11-14 | 2020-02-14 | 华兴源创(成都)科技有限公司 | Driving method and driving device of display panel |
| CN112397024A (en) * | 2020-11-23 | 2021-02-23 | 新相微电子(上海)有限公司 | Intelligent dynamic compensation system and method of OLED |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114639342A (en) * | 2022-04-25 | 2022-06-17 | 北京欧铼德微电子技术有限公司 | Display panel brightness control method and device, display equipment and electronic equipment |
| CN114783009A (en) * | 2022-04-29 | 2022-07-22 | 云谷（固安）科技有限公司 | Method for adjusting fingerprint brightness, display panel, device, processing equipment and terminal |
| CN115206224A (en) * | 2022-07-25 | 2022-10-18 | 武汉天马微电子有限公司 | Brightness adjusting method, device, equipment, medium, display panel and display device |
| CN118413640A (en) * | 2024-07-02 | 2024-07-30 | 杭州海康威视数字技术股份有限公司 | Image display method, device, electronic equipment and program product |
| CN119380146A (en) * | 2025-01-02 | 2025-01-28 | 苏州华兴源创科技股份有限公司 | Display panel brightness compensation model construction method, compensation method and device |
| CN119380146B (en) * | 2025-01-02 | 2025-04-11 | 苏州华兴源创科技股份有限公司 | Display panel brightness compensation model construction method, compensation method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114283745B (en) | 2023-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114283745B (en) | Brightness compensation method for display panel and related device | |
| CN112530347B (en) | Method, device and equipment for determining compensation gray scale | |
| WO2022022025A1 (en) | Brightness compensation method, apparatus and device for display panel | |
| CN106531050B (en) | Gray scale compensation method, device and system of display panel | |
| CN108877736B (en) | Compensation method and device for eliminating uneven screen brightness | |
| US10636345B2 (en) | Method of compensating in display panel, driving unit and display panel | |
| CN107068037B (en) | Gray scale correction method and gray scale correction device of display panel | |
| CN110148388B (en) | Method and device for determining pixel compensation value, electronic equipment and storage medium | |
| WO2019100418A1 (en) | Brightness compensation device and method, and memory | |
| CN109448660B (en) | Method, device and storage medium for improving color cast of display visual angle | |
| CN114283728B (en) | Compensation method and device for display panel and computer readable storage medium | |
| CN113724652B (en) | Compensation method and device for Mura of OLED display panel and readable medium | |
| WO2019001354A1 (en) | Display panel gray scale adjustment method and device | |
| CN112133239A (en) | Compensation voltage determination method and device and display device | |
| CN114241997B (en) | Brightness compensation method of display panel and related device | |
| TWI413101B (en) | Control method for improving the luminous uniformity and related luminosity calibrating controller and display device | |
| CN113380170B (en) | Display compensation method and device of display panel, display device and medium | |
| CN110648627A (en) | Mura phenomenon compensation method, compensation device, display device and electronic equipment | |
| CN113920917B (en) | Display panel compensation method and compensation device | |
| US20150187051A1 (en) | Method and apparatus for estimating image noise | |
| CN114093292B (en) | Luminance parameter correction method, device, equipment and luminance compensation system | |
| CN114495812B (en) | Display panel brightness compensation method and device, electronic equipment and readable storage medium | |
| CN114882843B (en) | Method and device for compensating brightness of display panel and computer readable storage medium | |
| KR102303685B1 (en) | Method of testing display apparatus and display apparatus tested by the same | |
| CN115035857A (en) | Display control method and device and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |