CN114822432B - Display panel brightness adjusting method and device, display device and storage medium - Google Patents
Display panel brightness adjusting method and device, display device and storage medium Download PDFInfo
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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
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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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
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
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- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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Abstract
The embodiment of the application provides a method, a device, a display device and a storage medium for regulating the brightness of a display panel, which do not need to acquire brightness data corresponding to each gray scale, detect whether gamma values and flicker conditions meet requirements after regulating voltages each time, and effectively improve the brightness regulating efficiency; and simultaneously, all gray scales except the sampling points are synchronously regulated, so that the differential regulation of the full gray scales of different display panels is realized.
Description
Technical Field
The application relates to the technical field of display panels, in particular to a display panel brightness adjusting method, a display panel brightness adjusting device, a display device and a storage medium.
Background
For TFT liquid crystal displays, gamma (gamma) is a curve used to characterize the photo-induced response of the liquid crystal display, and is also a response curve of the human eye to light. As the human eye vision has a nonlinear perception relation to the response of the brightness, the brightness and the human eye recognition of the gray scale are both exponential functions, and the human eye can respectively obtain the light intensity difference of more than 1%. Therefore, in the reproduction of a display image by the human eye, the nonlinear relationship between the perception of the human eye and the input electric signal is compensated, and this compensation is called gamma adjustment compensation.
Gamma adjustment compensation commonly used today generally includes both analog signal adjustment and digital signal adjustment. For digital signal adjustment, because of the mutual influence relationship of each digital adjustment method in automatic debugging on a production line, subsequent adjustment can be influenced by various different adjustments on the display panel; and some of the adjustment can only be fixed for all display panels, but cannot be different for different display panels. The adjustment of the analog signal requires the adjustment of the reference voltage corresponding to the gray level, and when the reference voltage is adjusted, the reference voltage corresponding to the single gray level is divided into a positive voltage and a negative voltage, so that the panel has the condition of flicker phenomenon deterioration along with the adjustment of the reference voltage, and therefore, after the adjustment of the analog reference voltage, the binding light intensity in the display panel needs to be resampled and confirmed, and the flicker phenomenon and the gamma value are confirmed to reach the target value of the current gray level, and then the adjustment of the next binding point is continued.
Therefore, the existing gamma adjustment is an adjustment process requiring multiple sampling and repeated confirmation. Reflecting to the process, the brightness sampling times, sampling time and the like have higher requirements, and the efficiency can be greatly influenced. Meanwhile, since the gray-scale brightness output voltages except the binding points are obtained through the internal resistor voltage division, the phenomenon that only the gamma value of the binding points is in the target range, namely the gamma curve is not smooth, exists.
Disclosure of Invention
The application provides a method and a device for adjusting brightness of a display panel, a display device and a storage medium, and aims to solve the problems that the brightness adjusting method in the prior art needs multiple sampling and is low in adjusting efficiency.
In a first aspect, an embodiment of the present application provides a method for adjusting brightness of a display panel, including:
determining the brightness corresponding to each of a preset number of sampling points in a current frame picture displayed by a display panel, and obtaining a plurality of first brightness data, wherein the gray scale corresponding to the preset number of sampling points is in a first gray scale range;
determining second brightness data corresponding to each gray scale in the first gray scale range according to the plurality of first brightness data so as to determine an initial gray scale brightness curve;
acquiring third brightness data corresponding to each gray scale in the first gray scale range under a target gamma adjustment value to determine a target gray scale brightness curve, wherein the number of the third brightness data is multiple;
taking any third brightness data in the third brightness data as target brightness data, and determining a first gray scale value corresponding to the target brightness data in the initial gray scale brightness curve;
And adjusting the brightness of the display panel by using the first gray scale value.
In one possible embodiment, the determining, in the first luminance data, second luminance data corresponding to each gray level in the first gray level range to determine an initial gray level luminance curve includes:
interpolating the plurality of first brightness data into a second gray scale range to obtain a plurality of second brightness data;
determining second brightness data corresponding to each gray scale in the first gray scale range in the plurality of second brightness data;
and obtaining an initial gray-scale brightness curve of gray-scale brightness according to the second brightness data corresponding to each gray-scale in the first gray-scale range.
In one possible embodiment, the second gray scale range is larger than the first gray scale range, and determining, in the first gray scale range, second luminance data corresponding to each gray scale in the plurality of second luminance data includes:
and screening the plurality of second brightness data to determine second brightness data corresponding to each gray scale in the first gray scale range.
In one possible embodiment, the obtaining the third luminance data corresponding to each gray level in the first gray level range under the target gamma adjustment value to determine a target gray level luminance curve includes:
Calculating to obtain third brightness data corresponding to each gray scale in the first gray scale range under the target gamma adjustment value by using a preset brightness calculation formula;
and obtaining a target gray scale brightness curve of gray scale-brightness according to the third brightness data corresponding to each gray scale in the first gray scale range.
In one possible embodiment, the determining, in the initial gray-scale luminance curve, a first gray-scale value corresponding to any third luminance data among the plurality of third luminance data, which is target luminance data, includes:
taking any third brightness data in the target gray-scale brightness curve as target brightness data;
determining target second brightness data with the smallest absolute value of the difference value with the third brightness data in the initial gray-scale brightness curve;
and determining a gray scale value corresponding to the target second brightness data in the initial gray scale brightness curve to obtain the first gray scale value.
In a possible embodiment, the adjusting the brightness of the display panel using the first gray-scale value includes:
acquiring an initial gamma compensation table, wherein the gamma compensation table comprises a plurality of second gray scale values in the target gray scale brightness curve;
Determining a first gray scale value corresponding to each third brightness data in the initial brightness gray scale curve in the plurality of third brightness data to obtain a plurality of first gray scale values;
updating a plurality of second gray scale values in the gamma compensation table by the plurality of first gray scale values to obtain an updated gamma compensation table;
and adjusting the brightness of the display panel by using the updated gamma compensation table.
In one possible embodiment, the method further comprises:
performing picture uniformity compensation on a picture to be displayed of the display panel;
performing white balance treatment on the picture to be displayed after picture uniformity compensation;
overdrive processing is carried out on the picture to be displayed after the white balance processing;
and adjusting the picture to be displayed after the overdrive processing to different visual angles.
In a second aspect, an embodiment of the present application provides a display panel brightness adjustment device, including:
the sampling module is used for determining the brightness corresponding to each of a preset number of sampling points in the current frame picture displayed by the display panel to obtain a plurality of first brightness data, wherein the gray scale corresponding to the preset number of sampling points is in a first gray scale range;
The first calculation module is used for determining second brightness data corresponding to each gray scale in the first gray scale range according to the plurality of first brightness data so as to determine an initial gray scale brightness curve;
the second calculation module is used for acquiring third brightness data corresponding to each gray scale in the first gray scale range under the target gamma adjustment value so as to determine a target gray scale brightness curve, wherein the number of the third brightness data is multiple;
the difference-by-difference searching module takes any third brightness data in the third brightness data as target brightness data, and determines a first gray scale value corresponding to the target brightness data in the initial gray scale brightness curve;
and the brightness adjusting module is used for adjusting the brightness of the display panel by utilizing the first gray scale value.
In a third aspect, an embodiment of the present application provides a display device including a display panel including the display panel luminance adjustment device, the uniformity compensation device, the white balance device, the overdrive device, and the viewing angle picture processing device described above;
the brightness adjusting device is connected with the uniformity compensating device, and the uniformity compensating device is connected with the white balancing device; the white balance device is connected with the overdrive device, and the overdrive device is connected with the visual angle picture processing device;
The display device further comprises a server comprising one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the display panel brightness adjustment method of any one of the above.
In a fourth aspect, the present application also provides a computer-readable storage medium having stored thereon a computer program to be loaded by a processor to perform the steps in the display panel brightness adjustment method as set forth in any one of the above.
According to the display panel brightness adjustment method, the display device and the storage medium provided by the embodiment of the application, based on digital signal adjustment, only the first brightness data corresponding to part of sampling points are acquired, and the second brightness data corresponding to each gray scale in the first gray scale range can be determined, so that the initial gray scale brightness curve corresponding to the actually measured brightness data can be determined; meanwhile, each gray scale in the first gray scale range corresponds to the third brightness data under the theoretical target gamma adjustment value, and further a theoretical output target gray scale brightness curve is determined. Therefore, the target brightness data which is theoretically output can be determined by utilizing the initial gray-scale brightness curve and the target gray-scale brightness curve, the corresponding actual first gray-scale value in the actual measured initial gray-scale brightness curve is finally utilized to drive the gray scale to be displayed by utilizing the adjusted brightness data, so that the gray scale to be displayed can output the adjusted brightness, but the gray scale value is not changed. Therefore, the brightness data corresponding to each gray scale value does not need to be acquired, whether the gamma value and the flicker condition meet the requirements or not is not needed to be detected after the voltage is regulated each time, and the brightness regulation efficiency can be effectively improved; simultaneously, all gray scales except the sampling points can be synchronously adjusted, so that the differential adjustment of all gray scales of different display panels is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a display panel brightness adjustment system according to an embodiment of the present application;
fig. 2 is a flowchart illustrating a method for adjusting brightness of a display panel according to an embodiment of the present application
FIG. 3 is a schematic diagram of an embodiment of a TFT-LCD structure according to the present disclosure;
FIG. 4 is a flowchart illustrating an embodiment of determining an initial gray scale luminance curve according to the present application;
FIG. 5 is a schematic diagram of an embodiment of a gray scale luminance curve according to the present application;
FIG. 6 is a flowchart illustrating an embodiment of determining a first gray level according to the present application;
fig. 7 is a schematic diagram of an embodiment of a display panel brightness adjusting device according to the present application;
fig. 8 is a schematic structural diagram of an embodiment of a display device according to the present application;
fig. 9 shows a schematic structural diagram of a server according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described as "exemplary" in this disclosure is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The embodiment of the application provides a display panel brightness adjusting method, a display panel brightness adjusting device, a display device and a storage medium, and the method, the device and the storage medium are respectively described in detail below.
As shown in fig. 1, a schematic view of a scene of a display panel brightness adjustment system according to an embodiment of the present application may include a plurality of hosts 100 and a server 200, where the hosts 100 are connected to the server 200 in a network, and a display panel brightness adjustment device is integrated in the server 200, such as the server in fig. 1, and the hosts 100 may access the server 200.
In the embodiment of the present invention, the server 200 is mainly configured to determine the brightness corresponding to each of a preset number of sampling points in a current frame picture displayed on the display panel, so as to obtain a plurality of first brightness data, where gray scales corresponding to the preset number of sampling points are in a first gray scale range; determining second brightness data corresponding to each gray scale in a first gray scale range according to the first brightness data so as to determine an initial gray scale brightness curve; acquiring third brightness data corresponding to each gray scale in the first gray scale range under the target gamma adjustment value to determine a target gray scale brightness curve, wherein the number of the third brightness data is multiple; taking any third brightness data in the plurality of third brightness data as target brightness data, and determining a first gray scale value corresponding to the target brightness data in an initial gray scale brightness curve; and adjusting the brightness of the display panel by using the first gray scale value.
In the embodiment of the present invention, the server 200 may be an independent server, or may be a server network or a server cluster formed by servers, for example, the server 200 described in the embodiment of the present invention includes, but is not limited to, a computer, a network host, a single network server, a plurality of network server sets, or a cloud server formed by a plurality of servers. Wherein the Cloud server is composed of a large number of computers or web servers based on Cloud Computing (Cloud Computing). In embodiments of the present invention, communication between the server and the host may be accomplished by any means of communication, including, but not limited to, mobile communication based on the third generation partnership project (3rd Generation Partnership Project,3GPP), long term evolution (Long Term Evolution, LTE), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX), or computer network communication based on the TCP/IP protocol family (TCP/IP Protocol Suite, TCP/IP), user datagram protocol (User Datagram Protocol, UDP), etc.
It is understood that the host 100 used in embodiments of the present application may be a device that includes both receive and transmit hardware, i.e., a device having receive and transmit hardware capable of performing bi-directional communications over a bi-directional communication link. Such hosts may include: a cellular or other communication device having a single-line display or a multi-line display or a cellular or other communication device without a multi-line display. The host 100 may be a desktop terminal or a mobile terminal, and the host 100 may be one of a mobile phone, a tablet computer, a notebook computer, and the like.
It will be understood by those skilled in the art that the application environment shown in fig. 1 is merely an application scenario of the present application, and is not limited to the application scenario of the present application, and other application environments may further include more or fewer servers than those shown in fig. 1, or a server network connection relationship, for example, only 1 server and 2 hosts are shown in fig. 1, and it is understood that the display panel brightness adjustment system may further include one or more other servers, or/and one or more hosts connected to a server network, which is not limited herein in particular.
In addition, as shown in fig. 1, the display panel brightness adjustment system may further include a storage module for storing data, such as driving voltage or a picture to be displayed.
It should be noted that, the schematic view of the display panel brightness adjustment system shown in fig. 1 is only an example, and the display panel brightness adjustment system and the scene described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the display panel brightness adjustment system and the appearance of the new service scene, the technical solution provided by the embodiments of the present application is equally applicable to similar technical problems.
Fig. 2 is a schematic flow chart of an embodiment of a method for adjusting brightness of a display panel according to the present application. May include:
21. and determining the brightness corresponding to each of a preset number of sampling points in the current frame picture to be displayed by the display panel, and obtaining a plurality of first brightness data.
Fig. 3 is a schematic diagram showing an embodiment of a TFT-LCD (Thin film transistor liquid crystal display, TFT-LCD) according to the present application. In fig. 3, the luminance of the lcd mainly includes a timing controller (Timing Controller, TCON) for transmitting a gray-scale luminance signal to a Source driver (Source driver), and the Source driver transmits an output reference voltage corresponding to a gray-scale to be displayed to the lcd for outputting the luminance corresponding to the gray-scale.
And gamma adjustment is performed on the display panel, namely, output brightness corresponding to gray scale is adjusted, so that a user can feel more detail brightness information of the image and the video. Common gamma adjustments include analog signal adjustments and digital signal adjustments. The brightness adjusting method of the display panel provided by the embodiment of the application is further improved on the basis of the digital signal adjusting method.
Therefore, in the embodiment of the application, the luminance data corresponding to the sampling points are also acquired first, so as to adjust the luminance of the whole display panel according to the luminance data corresponding to the sampling points. Specifically, the display panel is required to be controlled to display a picture, and then the brightness corresponding to each of a preset number of sampling points in the current frame picture displayed by the display panel is acquired to obtain a plurality of first brightness data.
In the embodiment of the present application, the sampling point is usually a pixel point corresponding to a preset gray level, for example, the gray level is 16 corresponding to the pixel point; luminance data corresponding to a pixel having a gray level of 16 can be obtained. In general, the sampling points are a plurality of sampling points with different gray scale values, and thus the acquired first luminance data is also a plurality of. In one embodiment, luminance data corresponding to 9 types of gray scale values with gray scales of 0, 16, 25, 32, 48, 60, 96, 128, 192, 224, 255 may be obtained. Of course, in other embodiments, more or fewer luminance data corresponding to gray levels may be obtained, which is not limited in the embodiments of the present application. Generally, the more the number of sampling points is, the more the first brightness data is obtained by sampling, so that the gray brightness curve obtained by fitting is closer to the real gray brightness curve of the display panel; therefore, the number of sampling points is increased, and the adjusting precision of the brightness adjusting method provided by the application can be effectively improved.
It should be noted that, in the embodiment of the present application, the gray scale corresponding to the preset number of sampling points is within the first gray scale range. In the embodiment of the application, the brightness of the sampling points can be measured by utilizing a brightness instrument to obtain the brightness data corresponding to different gray scale values; the specific acquisition method can refer to the prior art, and is not limited herein.
22. And determining second brightness data corresponding to each gray scale in the first gray scale range according to the plurality of first brightness data so as to determine an initial gray scale brightness curve.
After the plurality of first luminance data are obtained, the luminance data corresponding to the gray scale values except the gray scale value corresponding to the sampling list in the current frame picture displayed by the display panel can be determined according to the luminance data corresponding to the sampling points. In general, the gray scale value displayed by the display panel is usually a multiple of 2, that is, the gray scale value that the display panel can display has a certain gray scale range. In the embodiment of the application, the gray scale values corresponding to the sampling points are all within a certain gray scale range, and can be specifically a first gray scale range.
In addition to the gray scale values corresponding to the sampling points, other gray scale values exist in the first gray scale range, and the brightness data corresponding to the gray scale values can be determined according to a plurality of first brightness data corresponding to the sampling points. Specifically, luminance data corresponding to other gray-scale values except for the sampling points may be obtained by interpolation. After the brightness data corresponding to all the gray scale values in the first gray scale range are obtained, a gray scale brightness curve can be determined according to the gray scale and the corresponding brightness data.
Specifically, as shown in fig. 4, a flowchart of an embodiment of determining an initial gray-scale brightness curve according to the present application is shown; may include:
41. and interpolating the plurality of first brightness data into a second gray scale range to obtain a plurality of second brightness data.
Because the gray scale corresponding to the sampling point is only part of the gray scale in the first gray scale range, the brightness data corresponding to the sampling point can be directly measured; however, in an actual production line, the luminance data of all gray scales is not detected, but the luminance data corresponding to the gray scales except the sampling points are determined by using the luminance data corresponding to the sampling points.
In a specific embodiment, interpolation may be used to perform a difference on the plurality of first luminance data, so as to obtain luminance data corresponding to other gray-scale values except for the sampling point.
Because the specifications and the picture requirements of different display panels are different, the picture accuracy is also different in different display panels; i.e. the corresponding gray scale ranges of the pictures are also different. Therefore, in the embodiment of the application, the plurality of first brightness data measured in the first gray scale range can be interpolated to obtain the plurality of second brightness data in the second gray scale range. The first gray scale range and the second gray scale range may be the same or different.
In view of actual display panel production, it is generally necessary to prepare display panels of different specifications, and the picture accuracy requirements corresponding to different display panels are different. Therefore, in the plurality of second brightness data in the second gray scale range obtained by the interpolation method, the second gray scale range is larger than the first gray scale range.
In a specific embodiment, a plurality of first luminance data corresponding to 8bit (i.e. 0-255 gray scale) gray scale data may be interpolated to obtain a plurality of second luminance data corresponding to 12bit (i.e. 0-4080 gray scale) gray scale data. Of course, other precision luminance data such as 10bit and 16bit may be obtained by interpolation. Generally, the second gray scale range is greater than or equal to the first gray scale range.
42. And determining second brightness data corresponding to each gray scale in the first gray scale range in the second brightness data.
After a plurality of second brightness data are obtained by utilizing an interpolation method, a first gray scale range is required to be determined respectively, and each gray scale corresponds to the second brightness data; that is, a matching is required between the plurality of second luminance data and each gray level in the first gray level range, so as to determine the second luminance data corresponding to each gray level in the first gray level range.
In some embodiments, if the first gray scale range is equal to the second gray scale range, that is, the second luminance data corresponding to other gray scales except for the sampling point in the same gray scale range is obtained by using the difference method, the second luminance data and the plurality of gray scale values in the first gray scale range may be directly matched to determine the second luminance data corresponding to each gray scale.
In other embodiments, the second gray scale range is larger than the first gray scale range, and the plurality of second luminance data obtained by interpolation method includes luminance data corresponding to gray scales other than the second luminance data corresponding to all gray scales in the first gray scale range. Then, a plurality of second luminance data are required to be filtered to determine the second luminance data corresponding to each gray level in the first gray level range.
In one embodiment, if the first gray scale range is 0-255 and the second gray scale range is 0-4080, then the interpolated second luminance data also has 4080 luminance data corresponding to each gray scale, and only 256 luminance data in the 4080 luminance data are luminance data corresponding to 0-255 gray scales, so that the luminance data corresponding to each gray scale in the first gray scale range need to be individually screened out.
After determining the second brightness data corresponding to each gray scale in the first gray scale range, the initial gray scale brightness curve can be further determined; the initial gray scale brightness curve is a gray scale-brightness curve obtained by taking gray scale as an abscissa and taking second brightness data as an ordinate.
In the embodiment of the present application, if the first gray scale range is equal to the second gray scale range, when interpolation is performed to obtain the second luminance data, the second luminance data corresponding to each gray scale in the first gray scale range may be determined simultaneously. If the first gray scale range is smaller than the second gray scale range, the interpolated second luminance data are the second luminance data corresponding to all the gray scales in the second gray scale range, and the second luminance data corresponding to the gray scales in the first gray scale range are screened out, which is usually the luminance data corresponding to the gray scales obtained by amplifying the gray scale equal ratio.
In one embodiment, if the 8-bit luminance data is interpolated to 12 bits, then for the 8-bit gray scale, the luminance data corresponding to the gray scale 1 in the 8-bit gray scale range may be the luminance data corresponding to the gray scale 16 in the 12 bits. When the second brightness data are screened and matched, the second brightness data corresponding to other gray scales except the sampling points in the first gray scale range can be sequentially determined by using the method.
The plurality of second luminance data does not include the plurality of first luminance data, the plurality of first luminance data is actually measured, and the plurality of second luminance data is obtained by interpolating the plurality of first luminance data.
23. And acquiring third brightness data corresponding to each gray scale in the first gray scale range under the target gamma adjustment value so as to determine a target gray scale brightness curve.
Because the pictures actually displayed by the display panel are usually regulated by gamma regulating values, different gamma regulating values can correspond to different pictures; mainly corresponding to different luminance data. In the actual gamma compensation process, the common gamma adjustment value corresponds to a range, usually 2.0-2.4, and the gamma adjustment value is selected within the adjustment range of 2.0-2.4.
In the actual adjustment process, usually when the gamma adjustment value is 2.2, the dark and bright gray-scale signals perceived by human eyes are most sensitive. Therefore, 2.2 is also selected as the target gamma adjustment value to adjust the brightness in the embodiment of the present application.
After the target gamma adjustment value is determined, third brightness data corresponding to each gray scale in the first gray scale range can be further determined, so as to further determine a target gray scale brightness curve corresponding to the target gamma adjustment value.
It should be noted that, in the embodiment of the present application, the target gray-scale brightness curve is calculated by using the target gamma adjustment value after determining the target gamma adjustment value, so as to obtain the third brightness data corresponding to each gray-scale. Since the plurality of third luminance data are all calculated, the target gray-scale luminance curve in the embodiment of the application can be regarded as a theoretical gray-scale luminance curve. The first brightness data in the initial target brightness curve is obtained through actual measurement, and the second brightness data is obtained through interpolation by utilizing a plurality of first brightness data; in the embodiment of the application, the initial gray-scale brightness curve can be considered as a gray-scale brightness curve corresponding to actual brightness data.
24. And determining a first gray scale value corresponding to the target brightness data in the initial brightness curve by taking any third brightness data in the plurality of third brightness data as the target brightness data.
25. And adjusting the brightness of the display panel by using the first gray scale value.
For the embodiment of the application, the third brightness data in the target gray-scale brightness curve is obtained by using the determined target gamma adjustment value, that is, the third brightness data is the brightness data actually output by the picture of the display panel after gamma compensation. For the same brightness data, in order to make the picture (mainly referred to as gray scale) reach the brightness after gamma compensation, the gray scale needs to be driven by the corresponding brightness data of the higher gray scale before compensation, so that the compensated gray scale can reach the same brightness.
Specifically, for the target gray-scale luminance curve, any third luminance data in the target gray-scale luminance curve is taken as target luminance data; the target brightness data is brightness data corresponding to the gray scale after gamma compensation. In order to enable the gray scale to display the picture with the target brightness data, it is necessary to determine the corresponding gray scale value under the same brightness data in the initial gray scale brightness curve. In the initial gray-scale brightness curve, determining a first gray-scale value corresponding to the target united unique data, and driving the display panel with the brightness corresponding to the first gray-scale value.
According to the display panel brightness adjustment method provided by the embodiment of the application, based on digital signal adjustment, only the first brightness data corresponding to part of sampling points are acquired, so that the second brightness data corresponding to each gray scale in the first gray scale range can be determined, and further the initial gray scale brightness curve corresponding to the actually measured brightness data can be determined; meanwhile, each gray scale in the first gray scale range corresponds to the third brightness data under the theoretical target gamma adjustment value, and further a theoretical output target gray scale brightness curve is determined. Therefore, the target brightness data which is theoretically output can be determined by utilizing the initial gray-scale brightness curve and the target gray-scale brightness curve, the corresponding actual first gray-scale value in the actual measured initial gray-scale brightness curve is finally utilized to drive the gray scale to be displayed by utilizing the adjusted brightness data, so that the gray scale to be displayed can output the adjusted brightness, but the gray scale value is not changed. Therefore, the brightness data corresponding to each gray scale value does not need to be acquired, whether the gamma value and the flicker condition meet the requirements or not is not needed to be detected after the voltage is regulated each time, and the brightness regulation efficiency can be effectively improved; simultaneously, all gray scales except the sampling points can be synchronously adjusted, so that the differential adjustment of all gray scales of different display panels is realized.
In some embodiments of the present application, after determining the target gamma adjustment value, determining the third luminance data corresponding to each of the gray scales in the first gray scale range using the target gamma adjustment value to determine the target gray scale luminance curve may include:
calculating to obtain third brightness data corresponding to each gray scale in the first gray scale range under the target gamma adjustment value by using a preset brightness calculation formula; and obtaining a target gray scale brightness curve of gray scale-brightness according to the third brightness data corresponding to each gray scale in the first gray scale range.
Specifically, in an actual display panel, a mathematical relationship exists between a current gray scale GL displayed by the display panel and a current gray scale before the current gray scale corresponds to a display luminance T (GL) at a current gamma adjustment value, which may be:
wherein Tmax is the maximum brightness corresponding to the picture, and Tmin is the minimum brightness corresponding to the picture; while the maximum brightness and the minimum brightness are usually fixed and can be measured practically. Tmax and Tmin in the above formula are thus known data. And N is the number of gray levels, for example 256 gray levels. For the above formula, tmax and Tmin are known data, N is known data, and γ is the target gamma adjustment value; when the current gray level GL is determined, the display luminance T (GL) corresponding to the current gray level GL may also be calculated. Therefore, after the target gamma adjustment value is determined, the third brightness data corresponding to each gray scale in the first gray scale range can be obtained by calculation using the formula; and determining a target gray scale brightness curve by using the gray scale in the first range and the third brightness data corresponding to each gray scale. The abscissa of the target gray-scale brightness curve is gray-scale, and the ordinate is third brightness data.
Fig. 5 is a schematic diagram showing an embodiment of a gray-scale brightness curve according to an embodiment of the present application. In fig. 5, the abscissa is gray scale, and the ordinate is brightness; and the ordinate in fig. 5 has no difference between the second luminance data and the third luminance data. In fig. 5, the upper gray-scale luminance curve is a target gray-scale luminance curve, and the lower gray-scale luminance curve is an initial gray-scale luminance curve.
In the embodiment shown in fig. 5, the gray-scale luminance curve is a smooth curve, but the actual gray-scale luminance curve is not a smooth rising curve, and there is typically a fluctuation. FIG. 5 is therefore only shown as one embodiment of a gray scale-luminance curve; and are not meant to be limiting of other gray scale-luminance curves of the present application.
As shown in fig. 6, a flowchart of an embodiment of determining a first gray level value according to the present application may include:
61. and taking any third brightness data in the target gray-scale brightness curve as target brightness data.
62. And determining target second brightness data with the smallest absolute value of the difference value with the third brightness data in the initial gray-scale brightness curve.
63. And determining a gray scale value corresponding to the target second brightness data in the initial gray scale brightness curve to obtain a first gray scale value.
Referring to fig. 5, in fig. 5, any luminance data is taken as target luminance data, and a second gray-scale value can be determined in a target gray-scale luminance curve according to the target luminance data; and meanwhile, one brightness data closest to the target brightness data can be determined in the initial gray-scale brightness curve. This is because the actual grayscale data and luminance data are independent and not continuous; and the actual gray scale luminance profile typically fluctuates, not smoothly rising. The luminance data closest to the target luminance data is actually the luminance data corresponding to the initial gray-scale luminance curve when the absolute value of the difference value between the luminance data and the target luminance data is the smallest.
Taking fig. 5 as an example, a second gray-scale value may be determined in the target gray-scale luminance curve according to the target luminance data, and a first gray-scale value may be determined in the initial gray-scale luminance data. In the embodiment of the application, the brightness corresponding to the first gray level is actually used for driving the second gray level, so that the brightness corresponding to the second gray level can reach the same brightness after gamma compensation.
In fig. 5, taking the target luminance data 2 as an example, the first gray-scale value is 42, and the second gray-scale value is 21. It is desirable to drive the second gray-scale value 21 with the luminance data 2 corresponding to the gray-scale value 21 so that the second gray-scale value 21 can reach the luminance corresponding to the gray-scale value 42, thereby realizing the compensation of the luminance.
Therefore, in the embodiment of the present application, adjusting the brightness of the display panel using the first gray-scale value may include:
acquiring an initial gamma compensation table, wherein the gamma compensation table comprises a plurality of second gray scale values in a target gray scale brightness curve; determining a first gray scale value corresponding to each third brightness data in an initial brightness gray scale curve in the plurality of third brightness data to obtain a plurality of first gray scale values; updating a plurality of second gray scale values in the gamma compensation table by the plurality of first gray scale values to obtain an updated gamma compensation table; and adjusting the brightness of the display panel by using the updated gamma compensation table.
In an embodiment of the present application, the initial gamma compensation table includes a plurality of gray scale values; the plurality of gray-scale values in the initial gamma compensation table are actually a plurality of gray-scale values, i.e. a plurality of second gray-scale values, in the target gray-scale brightness curve. The initial gamma compensation table also corresponds to a brightness data table, so that each of the plurality of second gray-scale values corresponds to one brightness data. In general, after determining the gray scale to be displayed on the display panel, the brightness data corresponding to the gray scale can be determined according to the initial gamma compensation table, and the gray scale is driven by using the brightness data.
In the embodiment of the present application, the method in fig. 6 needs to be used to determine the first gray-scale value corresponding to each third luminance data in the initial gray-scale luminance curve in turn, so as to obtain a plurality of first gray-scale values. Updating the plurality of first gray scale values into a gamma compensation table, so that when the gamma compensation table is read to compensate, the first gray scale values are read, and brightness data corresponding to the first gray scale values are further determined; and driving the gray scale by utilizing the brightness data corresponding to the first gray scale value.
In the embodiment of the application, after a new gamma compensation table is acquired, the gamma table is also required to be converted into a bin document which can be identified by a display panel; wherein the bin document is mainly 01 data recognizable by the display panel. And burning the converted bin document into a storage unit, usually XB Flash. The specific process of converting the bin document and the burning process can refer to the prior art, and are not limited herein.
In order to better implement the method for adjusting brightness of a display panel according to the embodiment of the present application, on the basis of the method for adjusting brightness of a display panel, the embodiment of the present application further provides a device for adjusting brightness of a display panel, as shown in fig. 7, where the device for adjusting brightness of a display panel includes:
The sampling module 701 is configured to determine the brightness corresponding to each of a preset number of sampling points in a current frame displayed by the display panel, so as to obtain a plurality of first brightness data, where gray scales corresponding to the preset number of sampling points are in a first gray scale range;
the first calculating module 702 is configured to determine, according to the plurality of first luminance data, second luminance data corresponding to each of the gray scales within a first gray scale range, so as to determine an initial gray scale luminance curve;
the second calculation module 703 is configured to obtain, under the target gamma adjustment value, third luminance data corresponding to each gray level in the first gray level range, so as to determine a target gray level luminance curve, where the third luminance data is multiple;
the difference-by-difference searching module 704 uses any third brightness data in the plurality of third brightness data as target brightness data, and determines a first gray scale value corresponding to the target brightness data in an initial gray scale brightness curve;
the brightness adjustment module 705 is configured to adjust the brightness of the display panel using the first gray-scale value.
According to the display panel brightness adjusting device provided by the embodiment of the application, based on digital signal adjustment, only the first brightness data corresponding to part of sampling points are acquired, so that the second brightness data corresponding to each gray scale in the first gray scale range can be determined, and further the initial gray scale brightness curve corresponding to the actually measured brightness data can be determined; meanwhile, each gray scale in the first gray scale range corresponds to the third brightness data under the theoretical target gamma adjustment value, and further a theoretical output target gray scale brightness curve is determined. Therefore, the target brightness data which is theoretically output can be determined by utilizing the initial gray-scale brightness curve and the target gray-scale brightness curve, the corresponding actual first gray-scale value in the actual measured initial gray-scale brightness curve is finally utilized to drive the gray scale to be displayed by utilizing the adjusted brightness data, so that the gray scale to be displayed can output the adjusted brightness, but the gray scale value is not changed. Therefore, the brightness data corresponding to each gray scale value does not need to be acquired, whether the gamma value and the flicker condition meet the requirements or not is not needed to be detected after the voltage is regulated each time, and the brightness regulation efficiency can be effectively improved; simultaneously, all gray scales except the sampling points can be synchronously adjusted, so that the differential adjustment of all gray scales of different display panels is realized.
In some embodiments, the first calculating module 702 may be specifically configured to interpolate the plurality of first luminance data into the second gray scale range to obtain a plurality of second luminance data; determining second brightness data corresponding to each gray scale in a first gray scale range in the plurality of second brightness data; and obtaining an initial gray scale brightness curve of gray scale-brightness according to the second brightness data corresponding to each gray scale in the first gray scale range.
In some embodiments, the second gray scale range is larger than the first gray scale range, and the first calculation module 702 may be specifically configured to filter the plurality of second luminance data to determine the second luminance data corresponding to each gray scale in the first gray scale range.
In some embodiments, the second calculating module 703 may be specifically configured to calculate, using a preset brightness calculation formula, third brightness data corresponding to each gray level in the first gray level range under the target gamma adjustment value; and obtaining a target gray scale brightness curve of gray scale-brightness according to the third brightness data corresponding to each gray scale in the first gray scale range.
In some embodiments, the difference-by-difference searching module 704 may be specifically configured to use any third luminance data in the target gray-scale luminance curve as the target luminance data; determining target second brightness data with the minimum absolute value of the difference value with third brightness data in the initial gray-scale brightness curve; and determining a gray scale value corresponding to the target second brightness data in the initial gray scale brightness curve to obtain a first gray scale value.
In some embodiments, the brightness adjustment module 705 may be specifically configured to obtain an initial gamma compensation table, where the gamma compensation table includes a plurality of second gray scale values in a target gray scale brightness curve; determining a first gray scale value corresponding to each third brightness data in an initial brightness gray scale curve in the plurality of third brightness data to obtain a plurality of first gray scale values; updating a plurality of second gray scale values in the gamma compensation table by the plurality of first gray scale values to obtain an updated gamma compensation table; and adjusting the brightness of the display panel by using the updated gamma compensation table.
The embodiment of the application also provides a display device, as shown in fig. 8, which is a schematic structural diagram of an embodiment of the display device provided by the embodiment of the application. The display device may include a display panel, and the display panel may further include:
a display panel brightness adjusting device 801;
a uniformity compensation device 802, the uniformity compensation device 802 being connected to the brightness adjustment device 801;
a white balance device 803, the white balance device 803 being connected to the uniformity compensation device 802;
an overdrive device 804, the overdrive device 804 being connected to the white balance device 803;
a viewing angle picture processing device 805, the viewing angle picture processing device 805 being connected to the overdrive device 804;
The display panel brightness adjustment device 801 is any one of the above display panel brightness adjustment devices.
The display device provided by the embodiment of the application further includes a server, as shown in fig. 9, which shows a schematic structural diagram of the server according to the embodiment of the application, specifically:
the server may include one or more processing cores 'processors 901, one or more computer-readable storage media's memory 902, power supply 903, and input unit 904, among other components. Those skilled in the art will appreciate that the server architecture shown in fig. 9 is not limiting of the server and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. Wherein:
the processor 901 is a control center of the server, connects respective parts of the entire server using various interfaces and lines, and performs various functions of the server and processes data by running or executing software programs and/or modules stored in the memory 902 and calling data stored in the memory 902, thereby performing overall monitoring of the server. Optionally, processor 901 may include one or more processing cores; preferably, the processor 901 may integrate an application processor and a modem processor, wherein the application processor primarily handles operating systems, user interfaces, applications, etc., and the modem processor primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 901.
The memory 902 may be used to store software programs and modules, and the processor 901 performs various functional applications and data processing by executing the software programs and modules stored in the memory 902. The memory 902 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data created according to the use of the server, etc. In addition, the memory 902 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 902 may also include a memory controller to provide access to the memory 902 by the processor 901.
The server also includes a power supply 903 for powering the various components, preferably the power supply 903 can be logically coupled to the processor 901 via a power management system, such that functions such as managing charging, discharging, and power consumption are performed by the power management system. The power supply 903 may also include one or more of any components, such as a direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.
The server may further comprise an input unit 904, which input unit 904 may be used for receiving input of numerical or character information and for generating keyboard, mouse, joystick, optical or trackball signal inputs in connection with user settings and function control.
Although not shown, the server may further include a display unit or the like, which is not described herein. In this embodiment, the processor 901 in the server loads executable files corresponding to the processes of one or more application programs into the memory 902 according to the following instructions, and the processor 901 executes the application programs stored in the memory 902, so as to implement various functions as follows:
determining the brightness corresponding to each of a preset number of sampling points in a current frame picture displayed by a display panel, and obtaining a plurality of first brightness data, wherein gray scales corresponding to the preset number of sampling points are in a first gray scale range; determining second brightness data corresponding to each gray scale in a first gray scale range according to the first brightness data so as to determine an initial gray scale brightness curve; acquiring third brightness data corresponding to each gray scale in the first gray scale range under the target gamma adjustment value to determine a target gray scale brightness curve, wherein the number of the third brightness data is multiple; taking any third brightness data in the plurality of third brightness data as target brightness data, and determining a first gray scale value corresponding to the target brightness data in an initial gray scale brightness curve; and adjusting the brightness of the display panel by using the first gray scale value.
It should be noted that, in the actual adjustment process of the display panel frame, a plurality of different adjustment processes are included, and as shown in fig. 8, different modules may perform different processes on the frame. For the display panel brightness adjustment method provided by the embodiment of the application, the picture to be displayed needs to be subjected to subsequent other adjustment after the display panel brightness adjustment method provided by the embodiment of the application.
Specifically, after the brightness adjustment method according to any one of the above is performed on the picture to be displayed of the display panel, picture uniformity compensation is performed on the picture to be displayed of the display panel; performing white balance treatment on the picture to be displayed after picture uniformity compensation; overdrive processing is carried out on the picture to be displayed after the white balance processing; and adjusting the picture to be displayed after the overdrive processing to different visual angles.
It should be noted that, the to-be-displayed image of the display panel needs to be adjusted by the brightness adjustment method provided by the embodiment of the application, and then other treatments are performed. The brightness adjustment is performed on the picture to be displayed first, so that the brightness adjustment result in the embodiment of the application is prevented from being influenced by other subsequent processing.
The present application also provides a computer-readable storage medium, which may include: read Only Memory (ROM), random access Memory (RAM, random Access Memory), magnetic or optical disk, and the like. The storage medium stores a computer program that is loaded by a processor to perform the steps in any one of the display panel brightness adjustment methods provided by the embodiments of the present application. For example, the loading of the computer program by the processor may perform the steps of:
determining the brightness corresponding to each of a preset number of sampling points in a current frame picture displayed by a display panel, and obtaining a plurality of first brightness data, wherein gray scales corresponding to the preset number of sampling points are in a first gray scale range; determining second brightness data corresponding to each gray scale in a first gray scale range according to the first brightness data so as to determine an initial gray scale brightness curve; acquiring third brightness data corresponding to each gray scale in the first gray scale range under the target gamma adjustment value to determine a target gray scale brightness curve, wherein the number of the third brightness data is multiple; taking any third brightness data in the plurality of third brightness data as target brightness data, and determining a first gray scale value corresponding to the target brightness data in an initial gray scale brightness curve; and adjusting the brightness of the display panel by using the first gray scale value.
It should be noted that, because the method of the embodiment of the present application is executed in the electronic device, the processing objects of each electronic device exist in the form of data or information, for example, time, which is substantially time information, it can be understood that in the subsequent embodiment, if the size, the number, the position, etc. are all corresponding data, so that the electronic device can process the data, which is not described herein in detail.
The foregoing describes in detail a method, an apparatus, a display device and a storage medium for adjusting brightness of a display panel according to embodiments of the present application, and specific examples are applied to illustrate principles and implementations of the present application, where the foregoing examples are only for helping to understand the method and core ideas of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (8)
1. A method for adjusting brightness of a display panel, the method comprising:
determining the brightness corresponding to each of a preset number of sampling points in a current frame picture displayed by a display panel, and obtaining a plurality of first brightness data, wherein the gray scale corresponding to the preset number of sampling points is in a first gray scale range;
Determining second brightness data corresponding to each gray scale in the first gray scale range according to the plurality of first brightness data so as to determine an initial gray scale brightness curve;
acquiring third brightness data corresponding to each gray scale in the first gray scale range under a target gamma adjustment value to determine a target gray scale brightness curve, wherein the number of the third brightness data is multiple;
taking any third brightness data in the third brightness data as target brightness data, and determining a first gray scale value corresponding to the target brightness data in the initial gray scale brightness curve;
adjusting the brightness of the display panel by using the first gray scale value;
performing picture uniformity compensation on a picture to be displayed of the display panel;
performing white balance treatment on the picture to be displayed after picture uniformity compensation;
overdrive processing is carried out on the picture to be displayed after the white balance processing;
adjusting the picture to be displayed after overdrive processing at different visual angles;
wherein determining, in the first gray scale range, second luminance data corresponding to each gray scale in the first luminance data to determine an initial gray scale luminance curve includes:
Interpolating the plurality of first brightness data into a second gray scale range to obtain a plurality of second brightness data; wherein the first gray scale range is equal to the second gray scale range;
determining second brightness data corresponding to each gray scale in the first gray scale range in the plurality of second brightness data;
and obtaining an initial gray-scale brightness curve of gray-scale brightness according to the second brightness data corresponding to each gray-scale in the first gray-scale range.
2. The method of claim 1, wherein the second gray scale range is larger than the first gray scale range, and wherein determining the second luminance data corresponding to each gray scale in the first gray scale range from the plurality of second luminance data includes:
and screening the plurality of second brightness data to determine second brightness data corresponding to each gray scale in the first gray scale range.
3. The method of claim 1, wherein obtaining third luminance data corresponding to each gray level in the first gray level range under the target gamma adjustment value to determine a target gray level luminance curve comprises:
Calculating to obtain third brightness data corresponding to each gray scale in the first gray scale range under the target gamma adjustment value by using a preset brightness calculation formula;
and obtaining a target gray scale brightness curve of gray scale-brightness according to the third brightness data corresponding to each gray scale in the first gray scale range.
4. The method for adjusting luminance of a display panel according to claim 3, wherein the determining, in the initial gray-scale luminance curve, a first gray-scale value corresponding to any third luminance data among the plurality of third luminance data as target luminance data includes:
taking any third brightness data in the target gray-scale brightness curve as target brightness data;
determining target second brightness data with the smallest absolute value of the difference value with the third brightness data in the initial gray-scale brightness curve;
and determining a gray scale value corresponding to the target second brightness data in the initial gray scale brightness curve to obtain the first gray scale value.
5. The method of claim 4, wherein adjusting the brightness of the display panel using the first gray scale value comprises:
Acquiring an initial gamma compensation table, wherein the gamma compensation table comprises a plurality of second gray scale values in the target gray scale brightness curve;
determining a first gray scale value corresponding to each third brightness data in the initial brightness gray scale curve in the plurality of third brightness data to obtain a plurality of first gray scale values;
updating a plurality of second gray scale values in the gamma compensation table by the plurality of first gray scale values to obtain an updated gamma compensation table;
and adjusting the brightness of the display panel by using the updated gamma compensation table.
6. A display panel brightness adjustment device, the device comprising:
the sampling module is used for determining the brightness corresponding to each of a preset number of sampling points in the current frame picture displayed by the display panel to obtain a plurality of first brightness data, wherein the gray scale corresponding to the preset number of sampling points is in a first gray scale range;
the first calculation module is used for determining second brightness data corresponding to each gray scale in the first gray scale range according to the plurality of first brightness data so as to determine an initial gray scale brightness curve; specific: interpolating the plurality of first brightness data into a second gray scale range to obtain a plurality of second brightness data; wherein the first gray scale range is equal to the second gray scale range; determining second brightness data corresponding to each gray scale in the first gray scale range in the plurality of second brightness data; obtaining an initial gray scale brightness curve of gray scale-brightness according to second brightness data corresponding to each gray scale in the first gray scale range;
The second calculation module is used for acquiring third brightness data corresponding to each gray scale in the first gray scale range under the target gamma adjustment value so as to determine a target gray scale brightness curve, wherein the number of the third brightness data is multiple;
the difference-by-difference searching module takes any third brightness data in the third brightness data as target brightness data, and determines a first gray scale value corresponding to the target brightness data in the initial gray scale brightness curve;
the brightness adjusting module is used for adjusting the brightness of the display panel by utilizing the first gray scale value;
the brightness adjusting device is connected with the uniformity compensating device, the uniformity compensating device is connected with the white balancing device, the white balancing device is connected with the overdrive device, and the overdrive device is connected with the visual angle picture processing device;
after the brightness adjustment of the display panel is completed, the uniformity compensation device performs picture uniformity compensation on a picture to be displayed of the display panel, the white balance device performs white balance processing on the picture to be displayed after the picture uniformity compensation, the overdrive device performs overdrive processing on the picture to be displayed after the white balance processing, and the view picture processing device performs different view picture adjustment on the picture to be displayed after the overdrive processing.
7. A display device comprising a display panel comprising the display panel brightness adjustment device, the uniformity compensation device, the white balance device, the overdrive device, and the viewing angle picture processing device according to claim 6;
the brightness adjusting device is connected with the uniformity compensating device, and the uniformity compensating device is connected with the white balancing device; the white balance device is connected with the overdrive device, and the overdrive device is connected with the visual angle picture processing device;
the display device further comprises a server comprising one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the display panel brightness adjustment method of any one of claims 1 to 5.
8. A computer-readable storage medium, having stored thereon a computer program, the computer program being loaded by a processor to perform the steps in the display panel brightness adjustment method of any one of claims 1 to 5.
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