CN115985214A - Gamma adjusting method of display panel - Google Patents
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Abstract
The application relates to a gamma adjusting method of a display panel, which enables different display areas of the display panel to respectively and independently display gray scale pictures under different gray scale binding points, performs gamma adjustment on the plurality of gray scale binding points in parallel based on a plurality of different gray scale pictures which are independently displayed, and applies target gamma parameters obtained by adjustment to the whole display screen, thereby shortening the gamma adjusting time of the display panel; in addition, when the brightness values of the gray scale pictures in each display area are collected, the brightness values of the non-edge positions of the gray scale pictures are collected, so that the influence of the collected brightness values on the adjacent gray scale pictures is effectively weakened, and the accuracy of gamma adjustment is further improved.
Description
The application is a divisional application, the application number of the original application is 202211257683.X, the name of the original application is a multi-probe gamma adjustment method and device of a display panel, the date of the original application is 2022, 10 months and 14 days, and the whole content of the original application is incorporated into the application by reference.
Technical Field
The application relates to the field of display panels, in particular to a gamma adjusting method of a display panel.
Background
Before the display panel is shipped, gamma (gamma, chinese speech is translated into gamma) adjustment is generally required to ensure the display effect. The manufacturers who do gamma adjustment in the industry have core competitiveness in the total time of gamma adjustment and the effect of gamma adjustment.
A gamma adjusting method provided by the related technology comprises the following steps: the display panel respectively displays a plurality of gray scale pictures under different gray scale binding points in a whole screen mode according to time sequence, in the process of displaying the gray scale picture corresponding to each gray scale binding point, an optical probe is adopted to collect the brightness of the gray scale picture, and then gamma adjustment is carried out on the corresponding gray scale binding points based on the brightness to obtain ideal gamma parameters, so that the ideal gamma parameters of the plurality of gray scale binding points are obtained. The drawbacks of this adjustment are: the gamma adjustment of the next gray level binding point must be performed after the gamma adjustment of the previous gray level binding point is completed, thereby causing a long time duration of the gamma adjustment of the display panel and thus causing tt (tact time/tact time) of the display panel to increase.
Disclosure of Invention
In view of the above, the present application provides a gamma adjusting method and apparatus for a display panel, so as to shorten a gamma adjusting time of the display panel and ensure an accuracy of the gamma adjustment.
In a first aspect, the present application provides a gamma adjustment method for a display panel, the display panel including a first display region and a second display region that do not overlap with each other, the method including:
while performing the following steps S101 to S103, the following steps S201 to S203 are performed:
s101, controlling the first display area to display a first gray scale picture, wherein the first gray scale picture corresponds to a first gray scale binding point;
s102, collecting the current brightness of a first area in the first gray scale picture;
s103, carrying out gamma adjustment on the first gray scale binding point according to the first brightness to obtain a first target gamma parameter corresponding to the first gray scale binding point, wherein the first target gamma parameter is used as a gamma parameter of all display areas of the display panel under the first gray scale binding point;
s201, controlling the second display area to display a second gray scale picture, wherein the second gray scale picture corresponds to a second gray scale binding point, and the gray scale value of the second gray scale binding point is different from the gray scale value of the first gray scale binding point;
s202, collecting the current brightness of a second area in the second gray scale picture;
s203, carrying out gamma adjustment on the second gray level binding point according to the second brightness to obtain a second target gamma parameter corresponding to the second gray level binding point, wherein the second target gamma parameter is used as a gamma parameter of all display areas of the display panel under the second gray level binding point;
the first area is located at the non-edge part of the first gray scale picture, and the second area is located at the non-edge part of the second gray scale picture.
In one possible embodiment, the method comprises:
repeatedly executing the steps S101 to S103, and repeatedly executing the steps S201 to S203 while repeatedly executing the steps S101 to S103;
wherein, each time the steps S101 to S103 are executed, the gray scale value of the corresponding first gray scale binding point is different from the gray scale values of all the corresponding first gray scale binding points when the steps S101 to S103 are executed; every time the steps S201 to S203 are executed, the corresponding gray scale value of the second gray scale binding point is different from all the gray scale values of the second gray scale binding points corresponding to the previous steps S201 to S203; the gray scale value of the first gray scale binding point corresponding to the execution of the steps S101 to S103 at any time is different from the gray scale value of the second gray scale binding point corresponding to the execution of the steps S201 to S203 at any time.
In a possible embodiment, the actions of repeatedly performing the steps S101 to S103 and the actions of repeatedly performing the steps S201 to S203 are performed independently of each other.
In one possible implementation, the controlling the first display area to display the first grayscale screen includes: when the second display area is controlled to keep displaying the current second gray scale picture, the first display area is controlled to switch to display the next first gray scale picture;
the controlling the second display area to display a second gray scale picture comprises: and when the first display area is controlled to keep displaying the current first gray scale picture, the second display area is controlled to switch and display the next second gray scale picture.
In one possible implementation, when controlling the second display area to keep displaying the current second grayscale picture, controlling the first display area to switch to display the next first grayscale picture includes: configuring display parameters different from those of the second display area for the first display area to enable the first display area to switch and display the next first gray scale picture;
when the first display area is controlled to keep displaying the current first gray scale picture, the second display area is controlled to switch to display the next second gray scale picture, and the method comprises the following steps: and configuring display parameters different from those of the first display area for the second display area, so that the second display area switches to display the next second gray scale picture.
In a possible embodiment, said steps S101 to S103 are performed p times, and said steps S201 to S203 are performed q times;
wherein, when the steps S101 to S103 are executed for the p-th time, the steps S201 to S203 are executed for the q-th time, p + q = M, and M is the total gray scale level of the display panel.
In a second aspect, the present application provides a gamma adjustment method for a display panel, where the display panel includes N non-overlapping display regions, where the N display regions are respectively a 1 st display region to an nth display region, and N is greater than or equal to 3, and the method includes:
the following operations of i =1,2, \8230, N are repeatedly performed in parallel:
controlling an ith display area to display an ith gray scale picture, wherein the ith gray scale picture corresponds to an ith gray scale binding point;
acquiring the current ith brightness of the ith gray scale picture; and
carrying out gamma adjustment on the ith gray scale binding point according to the ith brightness to obtain an ith target gamma parameter corresponding to the ith gray scale binding point, wherein the ith target gamma parameter is used as a gamma parameter of all display areas of the display panel under the ith gray scale binding point;
when the operation is executed each time, the gray scale value of the corresponding ith gray scale binding point is different from the gray scale values of all the corresponding ith gray scale binding points when the operation is executed; the gray scale value of the 1 st gray scale binding point corresponding to the operation of i =1 is arbitrarily executed, the gray scale value of the 2 nd gray scale binding point corresponding to the operation of i =2 is arbitrarily executed, the gray scale value of the 3 rd gray scale binding point corresponding to the operation of i =3 is arbitrarily executed, the gray scale value of the 8230is \ 8230, and the gray scale value of the Nth gray scale binding point corresponding to the operation of i = N is arbitrarily executed, which are different from each other.
In one possible implementation, the controlling the ith display area to display the ith gray scale picture includes:
and when the current gray-scale picture is kept to be displayed in the non-ith display area, controlling the ith display area to switch and display the next ith gray-scale picture.
In one possible implementation, the controlling the ith display area to display the ith gray scale picture includes:
and different display parameters are independently configured for each display area, so that each display area independently displays the corresponding gray scale picture.
In one possible embodiment, the sum of the total number of times of performing the operations with i =1, the total number of times of performing the operations with i =2, the total number of times of performing the operations with i =3, ... and the total number of times of performing the operations with i = N is equal to the total gray scale level of the display panel.
According to the gamma adjusting method, different display areas of the display panel respectively and independently display gray scale pictures under different gray scale binding points, the gamma adjustment is carried out on the gray scale binding points in parallel on the basis of the independently displayed different gray scale pictures, and the adjusted target gamma parameters are applied to the whole display screen, so that the gamma adjustment time of the display panel is shortened; in addition, when the brightness values of the gray scale pictures in each display area are collected, the brightness values of the non-edge positions of the gray scale pictures are collected, so that the influence of the collected brightness values on the adjacent gray scale pictures is effectively weakened, and the accuracy of gamma adjustment is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description only relate to some embodiments of the present application and are not limiting on the present application.
FIG. 1 is a flowchart of a gamma adjustment method according to an embodiment of the present disclosure.
FIG. 2 is a flowchart of a gamma adjustment method according to an embodiment of the present application.
Fig. 3 is a schematic view illustrating a display panel according to an embodiment of the present disclosure when displaying a first gray scale image and a second gray scale image.
Fig. 4 is a schematic view illustrating a display panel according to an embodiment of the present disclosure when displaying a first gray scale image and a second gray scale image.
Fig. 5 is a schematic view illustrating a display panel according to an embodiment of the present disclosure when displaying a first gray scale image, a second gray scale image, a third gray scale image, and a fourth gray scale image.
FIG. 6 is a flowchart of a gamma adjustment method according to an embodiment of the present application.
FIG. 7 is a schematic structural diagram of a gamma adjustment device according to an embodiment of the present application.
Description of reference numerals:
100-a display panel;
101-a first display area, 102-a second display area, 103-a third display area, 104-a fourth display area;
101 a-first zone, 102 a-second zone.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application. It will be understood that some of the technical means of the various embodiments described herein may be replaced or combined with each other without conflict.
In the description of the present application and claims, the terms "first," "second," and the like, if any, are used solely to distinguish one from another as between described objects and not necessarily in any sequential or technical sense. Thus, an object defined as "first," "second," etc. may explicitly or implicitly include one or more of the object. Also, the use of the terms "a" or "an" and the like, do not denote a limitation of quantity, but rather denote the presence of at least one of the two, and "a plurality" denotes no less than two.
In the description of the specification and claims, the terms "based on" and "based on," if any, are used to describe one or more factors that affect the determination. The term does not exclude additional factors that influence the determination. That is, the determination may be based solely on these factors or at least partially on these factors. For example, the phrase "determine B based on a," in which case a is a factor that affects the determination of B, does not exclude that the determination of B may also be based on C.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise.
Referring to fig. 1, an embodiment of the present application provides a gamma adjustment method, which is used for gamma adjustment of the display panel 100 shown in fig. 3, where the display panel 100 has a first display area 101 and a second display area 102 that are not overlapped with each other, and the first display area 101 and the second display area 102 occupy all pixel points of the display panel 100 together, that is, the first display area 101 and the second display area 102 constitute the entire display area of the display panel 100. The method specifically comprises the following steps:
while performing the following steps S101 to S103, the following steps S201 to S203 are performed:
s101, controlling a first display area 101 to display a first gray scale picture, wherein the first gray scale picture corresponds to a first gray scale binding point;
s102, acquiring the current first brightness of a first gray scale picture through a first optical probe;
s103, carrying out gamma adjustment on the first gray scale binding points according to the first brightness to obtain first target gamma parameters corresponding to the first gray scale binding points, wherein the first target gamma parameters are used as gamma parameters of all display areas of the display panel 100 under the first gray scale binding points;
s201, controlling the second display area 102 to display a second gray scale picture, wherein the second gray scale picture corresponds to a second gray scale binding point, and the gray scale value of the second gray scale binding point is different from the gray scale value of the first gray scale binding point;
s202, acquiring the current second brightness of a second gray scale picture by using a second optical probe;
and S203, performing gamma adjustment on the second gray level binding points according to the second brightness to obtain second target gamma parameters corresponding to the second gray level binding points, wherein the second target gamma parameters are used as gamma parameters of all display areas of the display panel 100 under the second gray level binding points.
It is necessary to note that in the description of the present application, the term "simultaneously" has an overlapping meaning in time duration, referring not only to things that start at (exactly) the same time, but also to things that may not start and/or end at exactly the same time but occur during the same time range. Specifically, in the present embodiment, "simultaneously" means that the above-described operations S101 to S103 and the operations S201 to S203 are performed at least partially simultaneously. "simultaneous" may also be understood as "parallel".
By allocating different display parameters (such as RGB values) to different display regions of the display panel 100, different gray-scale pictures can be displayed in different display regions, so that the first display region 101 and the second display region 102 can respectively display two completely different gray-scale pictures at the same time, and when the gray-scale picture displayed in one of the display regions remains unchanged, the gray-scale picture displayed in the other display region can be changed.
In this embodiment, the gray scale binding point corresponding to the gray scale image displayed in the first display region 101 in the step S101 is 0 gray scale, that is, the gray scale value of the first gray scale binding point is 0, and the gray scale binding point corresponding to the gray scale image displayed in the second display region 102 in the step S201 is 255 gray scale, that is, the gray scale value of the second gray scale binding point is 255. It can be understood that, before step S102, the gamma parameter corresponding to the first gray scale binding point is not corrected, and the current actual brightness of the first gray scale picture may not conform to the visual characteristics of human eyes under the first gray scale binding point; before step S202, the gamma parameter corresponding to the second gray scale binding point is not corrected, and the current actual brightness of the second gray scale picture may not conform to the visual characteristics of human eyes at the second gray scale binding point.
In the present embodiment, the total number of gray scale levels of the display panel 100 is 256, i.e. the display panel 100 has 256 brightness levels. In practical application, a worker may pre-establish an initial gray scale database in a computer device, where the initial gray scale database contains initial gamma parameters of 256 gray scale binding points from 0 gray scale to 255 gray scale, and when step S101 is executed, the initial gamma parameters corresponding to the 0 gray scale binding points (first gray scale binding points) in the initial gray scale database may be retrieved and transmitted to the first display region 101 of the display panel 100, so that the first display region 101 displays an initial gray scale picture corresponding to the 0 gray scale binding points; in step S201, the initial gamma parameter corresponding to the 255 gray scale binding point (the second gray scale binding point) in the initial gray scale database may be retrieved and transmitted to the second display region 102 of the display panel 100, so that the second display region 102 displays the initial gray scale image corresponding to the 255 gray scale binding point. For example, the left gray-scale frame in fig. 3 corresponds to the first gray-scale frame in the step S101, and the right gray-scale frame corresponds to the second gray-scale frame in the step S201.
In other embodiments, the total gray scale level of the display panel 100 may be 32, 64, 128, 512, etc.
The gray-scale picture has a certain Brightness Value (DBV), and the Brightness of the gray-scale picture can be acquired by a professional optical probe (e.g., a CA410 probe). The method for collecting the brightness of the image is a mature prior art and is not described herein.
In this embodiment, the first display area 101 and the second display area 102 correspond to different optical probes, respectively, where the first optical probe is dedicated to acquiring the brightness of the gray scale image in the first display area 101, and the second optical probe is dedicated to acquiring the brightness of the gray scale image in the second display area 102. The advantages of such a design are: the light probe does not need to wait for brightness acquisition work of another display area to be completed for brightness acquisition work of one display area, gamma adjustment of the first display area 101 and gamma adjustment of the second display area 102 can be performed simultaneously, and gamma adjustment efficiency is improved.
It can be understood that if the first optical probe acquires the brightness values of the entire area of the first gray scale image in step S102, the brightness values are necessarily affected by the brightness of the second gray scale image (because the second gray scale image has a different brightness from the first gray scale image and the two gray scale images are close to each other), which results in a larger error in the brightness acquisition value. With reference to fig. 3, in the present embodiment, the above-mentioned acquiring the current first brightness of the first gray-scale image by the first optical probe specifically includes: acquiring the current brightness of a first area 101a in a first gray scale picture through a first optical probe; the above acquiring the current second brightness of the second gray scale image by the second optical probe specifically includes: acquiring the current brightness of a second area 102a in a second gray scale picture through a second optical probe; moreover, the first region 101a is located at a non-edge portion of the first gray scale frame, and the second region 102a is located at a non-edge portion of the second gray scale frame.
The brightness of the current frame acquired by the optical probe may be an average brightness of the acquired region, and for example, the current brightness of the first region 101a in the first grayscale frame acquired by the first optical probe is the average brightness of the first region 101 a.
Referring to fig. 3 again, the first region 101a may be a central region of the first gray-scale frame, that is, a central region of the first display region 101; the second region 102a may be a central region of the second gray scale screen, i.e., a central region of the second display region 102.
Considering that it is a mature technology in the prior art to adjust the gamma parameter under the corresponding gray level tie point according to the actual brightness of the display screen under the corresponding gray level tie point, the following brief description is made here:
for example, in some embodiments, the current brightness of the first gray scale image acquired by the first optical probe in step S102 is compared with the standard brightness corresponding to the first gray scale binding point, if the brightness difference between the current brightness and the standard brightness exceeds the set threshold range, which indicates that the deviation between the initial gamma parameter and the ideal gamma parameter under the first gray scale binding point is large, the gamma parameter (mainly including the value of R/G/B) corresponding to the first gray scale binding point is finely adjusted, and the finely adjusted gamma parameter is transmitted to the first display region 101, so that the first display region 101 displays the gray scale image corresponding to the first gray scale binding point after the gamma parameter is finely adjusted; then, the brightness of the current gray scale picture in the first display area 101 is acquired through the first optical probe (because the gamma parameter is adjusted, the brightness of the gray scale picture in the first display area 101 at this time is changed compared with the brightness of the first gray scale picture), the brightness of the current gray scale picture acquired through the first optical probe is compared with the standard brightness corresponding to the first gray scale binding point again, if the brightness difference between the brightness of the current gray scale picture and the standard brightness corresponding to the first gray scale binding point still exceeds the set threshold range, the gamma parameter corresponding to the first gray scale binding point is further finely adjusted according to the brightness difference until the obtained difference between the brightness of the current gray scale picture in the first display area 101 and the standard brightness corresponding to the first gray scale binding point is within the set threshold range, and the obtained gamma parameter at this time is the first target gamma parameter. The obtained target gamma parameter is stored in the gamma chip of the display panel 100.
For another example, in other embodiments, if the difference between the current brightness of the first gray scale image collected by the first optical probe in step S102 and the standard brightness corresponding to the first gray scale binding point is within the set threshold range, which indicates that the deviation between the initial gamma parameter under the first gray scale binding point and the ideal gamma parameter is not large, the initial gamma parameter under the first gray scale binding point may be used as the first target gamma parameter. It can be seen that the finally determined first target gamma parameters do not necessarily differ from the original gamma parameters.
The specific method for acquiring the second target gamma parameter is similar to the specific method for acquiring the first target gamma parameter, and is not repeated.
For the same display panel 100, generally, the display characteristics of the display regions are substantially consistent (the differences are not large), based on which, in the present embodiment, the target gamma parameter expansion under the first gray scale binding point determined based on the display effect of the first display region 101 is applied to all the display regions of the display panel 100 (in the present embodiment, specifically, the first display region 101 and the second display region 102, in other embodiments, the display panel 100 may further have other display regions except the first display region 101 and the second display region 102), and the target gamma parameter expansion under the second gray scale binding point determined based on the display effect of the second display region 102 is applied to all the display regions of the display panel 100, which not only ensures the accuracy of gamma adjustment to a certain extent, but also can significantly improve the rate of gamma adjustment.
It can be understood that, through the operations of S101-S103 and S201-S203, the target gamma parameters of two gray level ties can be obtained, and the time length for obtaining the two target gamma parameters is only about half of the time length used by the conventional scheme (full screen single picture adjustment).
Since the total gray scale level of the display panel 100 is generally not less than 8 levels, the target gamma parameter of all gray scale bindings of the display panel 100 cannot be obtained only by the operations of S101-S103 and S201-S203. Based on this, in order to obtain more target gamma parameters for gray level bindings, referring to fig. 2, in some embodiments, the gamma adjustment method further comprises: after the step S103, repeating the steps S101 to S103, wherein each time the steps S101 to S103 are executed, the gray level value of the corresponding first gray level tie point is different from the gray level value of all the corresponding first gray level tie points in the previous step S101; after the step S203, repeating the steps S201 to S203, wherein each time the steps S201 to S203 are executed, the gray level value of the corresponding second gray level tie is different from all the gray level values of the corresponding second gray level ties when the steps S201 to S203 are executed; moreover, the gray level value of the corresponding first gray level binding point when any one of steps S101 to S103 is executed is different from the gray level value of the corresponding second gray level binding point when any one of steps S201 to S203 is executed (to avoid the same gray level binding point being adjusted repeatedly).
As can be understood from fig. 2, if steps S101 to S103 are repeatedly performed 30 times, target gamma parameters corresponding to 30 different gray-scale binding points can be obtained based on the first display region 101; if steps S201 to S203 are repeatedly performed 50 times, the target gamma parameters corresponding to 50 different gray-scale binding points can be obtained based on the second display region 102; since the gray level value of the corresponding first gray level binding point is different from the gray level value of the corresponding second gray level binding point when steps S101 to S103 are executed any time, 30+50=80 target gamma parameters of different gray level binding points can be obtained in total, and the remaining target gamma parameters of 256-80=176 gray level binding points can be obtained by other methods (for example, the target gamma parameters of the remaining 176 gray level binding points are obtained by fitting based on the known target gamma parameters of 80 gray level binding points).
Although the target gamma parameters of the remaining gray level bindings may be derived based on fitting the target gamma parameters of some gray level bindings, the target gamma parameters obtained in this way may have a large error. In this regard, referring again to fig. 2, in the embodiment shown in fig. 2, the target gamma parameters for all 256 gray level bindings are obtained as described above, specifically: repeating the steps S101 to S103 until target gamma parameters corresponding to all gray scale binding points of the display panel 100 are obtained; the steps S201 to S203 are repeatedly executed until the target gamma parameters corresponding to all the gray level binding points of the display panel 100 are obtained. Namely, the steps S101 to S103 are continuously and repeatedly executed until the target gamma parameters of all 256 gray scale binding points are obtained, and then the repetition is stopped; and continuously repeating the steps S201 to S203 until target gamma parameters of all 256 gray level bindings are obtained, and then stopping repeating.
As mentioned above, the gray scale value of the first gray scale binding point is different from the gray scale value of the first gray scale binding point when all the steps S101 are executed each time steps S101 to S103 are executed, the gray scale value of the second gray scale binding point is different from the gray scale value of the second gray scale binding point when all the steps S201 are executed each time steps S201 to S203 are executed, and the gray scale value of the first gray scale binding point is different from the gray scale value of the second gray scale binding point when any one of the steps S101 to S103 is executed. Therefore, when the sum of the total number of execution times of steps S101 to S103 and the total number of execution times of steps S201 to S203 is equal to the total number of gray-scale levels of the display panel 100, i.e. 256, the target gamma parameters of all gray-scale bindings of the display panel 100 can be obtained. In other words, if steps S101 to S103 are performed p times in total, then steps S201 to S203 are performed M-p times in total, where M is the total gray scale level of the display panel 100, and M =256 in the embodiment shown in fig. 2.
For different gray level binding points, the brightness deviation of the corresponding initial gray level frames is different, so the adjustment (or correction) duration of the gamma parameter is usually different, and therefore, when the steps S101 to S103 are executed 128 th time, the steps S201 to S203 may be only executed 90 th time. In order to shorten the gamma adjustment time for all gray level bindings as much as possible, it is desirable to ensure that when steps S101 to S103 are executed for the last time, steps S201 to S203 are just in the process of being executed for the last time. For example, if the steps S201 to S203 are in the process of being executed 118 times when the steps S101 to S103 are executed 138 times, which means that after the current steps S101 to S103 and the current steps S201 to S203 are executed, the target gamma parameters of all 256 gray-scale binding points are obtained, the repetition may be stopped after the current steps S101 to S103 are executed, and the repetition may be stopped after the current steps S201 to S203 are executed.
Each time steps S101 to S103 are repeatedly executed, the corresponding first gray scale binding point may be randomly selected from the initial gray scale database or selected according to a set sequence, each time steps S201 to S203 are repeatedly executed, the corresponding second gray scale binding point may also be randomly selected from the initial gray scale database or selected according to a set sequence, and the selected gray scale binding point is removed from the initial gray scale database after a certain gray scale binding point is selected each time, and is used as a candidate library for selecting the next gray scale binding point.
In some embodiments, the gray level value of the corresponding first gray level tie point is 0 when steps S101 to S103 are performed for the first time, and the gray level value of the corresponding second gray level tie point is 255 when steps S201 to S203 are performed for the first time; the gray scale value of the first gray scale binding point is 1 greater each time steps S101 to S103 are performed than the gray scale value of the first gray scale binding point at the previous time steps S101 to S103 are performed, and the gray scale value of the second gray scale binding point is 1 less each time steps S201 to S203 are performed than the gray scale value of the second gray scale binding point at the previous time steps S201 to S203 are performed. Illustratively, when steps S101 to S103 are executed for the second time, the gray level value of the corresponding first gray level binding point is 1, when steps S101 to S103 are executed for the third time, the gray level value of the corresponding first gray level binding point is 2, when steps S101 to S103 are executed for the fourth time, the gray level value of the corresponding first gray level binding point is 2 \8230 \ when steps S201 to S203 are executed for the second time, the gray level value of the corresponding second gray level binding point is 254, when steps S201 to S203 are executed for the third time, the gray level value of the corresponding second gray level binding point is 253 ..., and if steps S101 to S103 are executed for the 100 th time (the currently corresponding first gray level binding point is 99), steps S201 to S203 are in the process of being executed for the 156 th time (the currently corresponding second gray level binding point is 100 gray level), and the steps S201 to S103 are repeated after the current steps S101 to S103 are executed.
It should be noted that, when the above method is implemented, the first display region 101 and the second display region 102 are not necessarily required to occupy all the display regions of the display panel 100 together, and two corresponding display regions spaced apart from each other may be selected from the display panel 100 as the first display region 101 and the second display region 102 in the above method as needed. Illustratively, as shown in fig. 4, the first display region 101 and the second display region 102 are arranged at intervals, and in the process of implementing the above method, the display region (dark black region) between the first display region 101 and the second display region 102 in fig. 4 may be always in a normally dark state.
Referring to fig. 6, a gamma adjustment method similar to that of the above embodiments is also provided in another embodiment of the present application, which can be understood by referring to the description of the above embodiments, and the differences between the above embodiments and the embodiments are mainly described below.
The embodiment shown in fig. 6 provides a method for gamma adjustment of the display panel 100 shown in fig. 5, the display panel 100 has a first display area 101, a second display area 102, a third display area 103 and a fourth display area 104 which are not overlapped with each other, and the total gray scale level of the display panel 100 is 128. The method comprises the following steps:
while the following steps S101 to S103 are performed, the following steps S201 to S203 are performed, the following steps S301 to S303 are performed, and the following steps S401 to S403 are performed:
s101, controlling the first display area 101 to display a first gray scale picture, wherein the first gray scale picture corresponds to a first gray scale binding point.
S102, acquiring the current first brightness of the first gray-scale picture through the first optical probe.
S103, performing gamma adjustment on the first gray scale binding point according to the first brightness, to obtain a first target gamma parameter corresponding to the first gray scale binding point, where the first target gamma parameter is used as a gamma parameter of all display areas of the display panel 100 under the first gray scale binding point.
And S201, controlling the second display area 102 to display a second gray scale picture, wherein the second gray scale picture corresponds to a second gray scale binding point, and the gray scale value of the second gray scale binding point is different from the gray scale value of the first gray scale binding point.
S202, a second optical probe is adopted to acquire the current second brightness of the second gray scale picture.
S203, carrying out gamma adjustment on the second gray level binding points according to the second brightness to obtain second target gamma parameters corresponding to the second gray level binding points, wherein the second target gamma parameters are used as gamma parameters of all display areas of the display panel 100 under the second gray level binding points;
s301, controlling a third display area 103 to display a third gray scale picture, wherein the third gray scale picture corresponds to the first gray scale binding point, and the gray scale value of the third gray scale binding point, the gray scale value of the first gray scale binding point and the gray scale value of the second gray scale binding point are different;
s302, acquiring current third brightness of a third gray scale picture through a third optical probe;
s303, carrying out gamma adjustment on the third gray scale binding points according to the third brightness to obtain third target gamma parameters corresponding to the third gray scale binding points, wherein the third target gamma parameters are used as gamma parameters of all display areas of the display panel 100 under the third gray scale binding points;
s401, controlling the fourth display area 104 to display a fourth gray scale picture, wherein the fourth gray scale picture corresponds to a fourth gray scale binding point, and the gray scale value of the fourth gray scale binding point, the gray scale value of the third gray scale binding point, the gray scale value of the first gray scale binding point and the gray scale value of the second gray scale binding point are different;
s402, acquiring the current fourth brightness of a fourth gray scale picture by adopting a fourth optical probe;
and S403, performing gamma adjustment on the fourth gray scale binding point according to the fourth brightness to obtain a fourth target gamma parameter corresponding to the fourth gray scale binding point, wherein the fourth target gamma parameter is used as the gamma parameter of all the display areas of the display panel 100 under the fourth gray scale binding point.
It is understood that through the operations of S101 to S103, S201 to S203, S301 to S303, and S401 to S403, the target gamma parameters of the four gray-scale bindings can be obtained, and the time length for obtaining the four target gamma parameters is only about 1/4 of the time length used by the conventional scheme (full-screen single-picture adjustment).
Referring to fig. 6 again, in order to obtain the target gamma parameters of all 128 gray level bindings, the method of the embodiment may further include:
after the step S103, repeating the steps S101 to S103 until the target gamma parameters of all the gray level bindings are obtained, wherein each time the steps S101 to S103 are executed, the gray level value of the corresponding first gray level binding is different from the gray level value of the corresponding first gray level binding when the steps S101 to S103 are executed;
after the step S203, repeating the steps S201 to S203 until the target gamma parameters of all the gray level bindings are obtained, wherein each time the steps S201 to S203 are executed, the gray level value of the corresponding second gray level binding is different from the gray level value of the corresponding second gray level binding when the steps S201 to S203 are executed;
after the step S303, repeating the steps S301 to S304 until the target gamma parameters of all the gray level bindings are obtained, wherein each time the steps S301 to S304 are executed, the gray level value of the corresponding third gray level binding is different from the gray level value of the corresponding third gray level binding when the steps S301 to S304 are executed;
after the step S403, repeating the steps S401 to S404 until the target gamma parameters of all the gray level bindings are obtained, wherein each time the steps S401 to S404 are executed, the gray level value of the corresponding fourth gray level binding is different from the gray level value of the corresponding fourth gray level binding when the steps S401 to S404 are executed;
moreover, the gray scale value of the corresponding first gray scale binding point when steps S101 to S103 are performed any time, the gray scale value of the corresponding second gray scale binding point when steps S201 to S203 are performed any time, the gray scale value of the corresponding third gray scale binding point when steps S301 to S303 are performed any time, and the gray scale value of the corresponding fourth gray scale binding point when steps S401 to S403 are performed any time are different from each other.
Illustratively, the computer device for executing the method first randomly picks out 71, 3, 35, 12 four gray scale bindings from the initial gray scale database to be respectively allocated to the first display area 101, the second display area 102, the third display area 103 and the fourth display area 104, so that the four display areas respectively display initial gray scale pictures corresponding to the gray scale bindings to correct gamma parameters of the four gray scale bindings; after the completion of step S103, that is, the completion of 71 gray level binding point correction, another gray level binding point (for example, 29 gray levels) is randomly selected from the initial gray level database to the first display region 101, so as to correct the gamma parameter of 29 gray levels; after the step S303 is completed, that is, the correction of the 35 gray level binding points is completed, another gray level binding point (for example, 7 gray levels) is randomly selected from the initial gray level database to the third display region 103, so as to correct gamma parameters of the 7 gray levels (8230) \... and so on until the gamma adjustment for all 128 gray level bindings is completed.
Obviously, the display panel 100 may be divided into three, five, six or more display regions, and the gamma correction is performed on each gray level binding point by the above method based on the gray level picture corresponding to the different gray level binding points displayed in each display region.
In addition, referring to fig. 7, an embodiment of the present application further provides a gamma adjusting apparatus, which includes a computer device and a plurality of optical probes, wherein the computer device includes a memory, a processor connected to the memory and the plurality of optical probes, and instructions stored in the memory and executable by the processor. When the computer device is connected to the display panel 100, the processor can execute the aforementioned instructions to implement the gamma adjustment method described above.
Obviously, the plurality of optical probes may share the same housing.
Claims (10)
1. A gamma adjustment method for a display panel, wherein the display panel includes a first display region and a second display region that do not overlap with each other, the method comprising:
while the following steps S101 to S103 are performed, the following steps S201 to S203 are performed:
s101, controlling the first display area to display a first gray scale picture, wherein the first gray scale picture corresponds to a first gray scale binding point;
s102, collecting the current brightness of a first area in the first gray scale picture;
s103, carrying out gamma adjustment on the first gray scale binding point according to the first brightness to obtain a first target gamma parameter corresponding to the first gray scale binding point, wherein the first target gamma parameter is used as a gamma parameter of all display areas of the display panel under the first gray scale binding point;
s201, controlling the second display area to display a second gray scale picture, wherein the second gray scale picture corresponds to a second gray scale binding point, and the gray scale value of the second gray scale binding point is different from the gray scale value of the first gray scale binding point;
s202, collecting the current brightness of a second area in the second gray scale picture;
s203, carrying out gamma adjustment on the second gray level binding point according to the second brightness to obtain a second target gamma parameter corresponding to the second gray level binding point, wherein the second target gamma parameter is used as a gamma parameter of all display areas of the display panel under the second gray level binding point;
the first area is located at the non-edge part of the first gray scale picture, and the second area is located at the non-edge part of the second gray scale picture.
2. The gamma adjustment method of claim 1, wherein the method comprises:
repeatedly executing the steps S101 to S103, and repeatedly executing the steps S201 to S203 while repeatedly executing the steps S101 to S103;
wherein, each time the steps S101 to S103 are executed, the gray scale value of the corresponding first gray scale binding point is different from the gray scale values of all the corresponding first gray scale binding points when the steps S101 to S103 are executed; every time the steps S201 to S203 are executed, the corresponding gray scale value of the second gray scale binding point is different from all the corresponding gray scale values of the second gray scale binding points in the previous steps S201 to S203; the gray scale value of the first gray scale binding point corresponding to the execution of the steps S101 to S103 at any time is different from the gray scale value of the second gray scale binding point corresponding to the execution of the steps S201 to S203 at any time.
3. The gamma adjustment method according to claim 2, wherein the actions of repeatedly performing the steps S101 to S103 and the actions of repeatedly performing the steps S201 to S203 are performed independently of each other.
4. The method of claim 3,
the controlling the first display area to display the first gray scale picture comprises: when the second display area is controlled to keep displaying the current second gray scale picture, the first display area is controlled to switch to display the next first gray scale picture;
the controlling the second display area to display a second gray scale picture comprises: and when the first display area is controlled to keep displaying the current first gray scale picture, the second display area is controlled to switch and display the next second gray scale picture.
5. The gamma adjustment method of claim 4,
when the second display area is controlled to keep displaying the current second gray scale picture, the first display area is controlled to switch to display the next first gray scale picture, and the method comprises the following steps: configuring display parameters different from those of the second display area for the first display area to enable the first display area to switch and display the next first gray scale picture;
when the first display area is controlled to keep displaying the current first gray scale picture, the second display area is controlled to switch to display the next second gray scale picture, and the method comprises the following steps: and configuring display parameters different from those of the first display area for the second display area, so that the second display area switches to display the next second gray scale picture.
6. The method according to any one of claims 2 to 5,
executing the steps S101 to S103 for p times, and executing the steps S201 to S203 for q times;
wherein, when the steps S101 to S103 are executed for the p-th time, the steps S201 to S203 are executed for the q-th time, and p + q = M, where M is the total gray scale level of the display panel.
7. A gamma adjustment method for a display panel is characterized in that the display panel comprises N non-overlapping display areas, the N display areas are respectively a No. 1 display area to a No. N display area, N is more than or equal to 3, and the method comprises the following steps:
the following operations of i =1,2, \8230, N are repeatedly performed in parallel:
controlling an ith display area to display an ith gray scale picture, wherein the ith gray scale picture corresponds to an ith gray scale binding point;
acquiring the current ith brightness of the ith gray scale picture; and
carrying out gamma adjustment on the ith gray scale binding point according to the ith brightness to obtain an ith target gamma parameter corresponding to the ith gray scale binding point, wherein the ith target gamma parameter is used as a gamma parameter of all display areas of the display panel under the ith gray scale binding point;
when the operation is executed each time, the gray scale value of the corresponding ith gray scale binding point is different from the gray scale values of all the corresponding ith gray scale binding points when the operation is executed; the gray scale value of the 1 st gray scale binding point corresponding to the operation of i =1 is arbitrarily executed, the gray scale value of the 2 nd gray scale binding point corresponding to the operation of i =2 is arbitrarily executed, the gray scale value of the 3 rd gray scale binding point corresponding to the operation of i =3 is arbitrarily executed, the gray scale value of the 8230is \ 8230, and the gray scale value of the Nth gray scale binding point corresponding to the operation of i = N is arbitrarily executed, which are different from each other.
8. The method as claimed in claim 7, wherein the controlling the ith display region to display the ith gray scale picture comprises:
and when the current gray-scale picture is kept to be displayed in the non-ith display area, controlling the ith display area to switch and display the next ith gray-scale picture.
9. The method as claimed in claim 8, wherein the controlling the ith display region to display the ith gray scale picture comprises:
and different display parameters are independently configured for each display area, so that each display area independently displays the corresponding gray scale picture.
10. The gamma adjustment method of claim 7, wherein the sum of the total number of times of performing the operation of i =1, the total number of times of performing the operation of i =2, the total number of times of performing the operation of i =3 ..., and the total number of times of performing the operation of i = N is equal to the total number of gray levels of the display panel.
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