CN109767729B - Screen gamma debugging method and display module - Google Patents
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Abstract
The application provides a screen gamma debugging method and a display module, which solve the problem that the production efficiency is affected due to overlong gamma debugging time. Comprising the following steps: step one, a first value group of optical parameter target values corresponding to an ith binding point is obtained, a second value group of optical parameter target values corresponding to adjacent binding points is given to the ith binding point, i is more than or equal to 2 and is a positive integer, and gray scales of different binding points are different; step two, the second value group is adjusted to be a third value group which is identical to the first value group; and thirdly, assigning the third value group to the ith binding point and taking the third value group as a standard value of the ith binding point.
Description
Technical Field
The application relates to the technical field of device color debugging, in particular to a screen gamma debugging method and a display module.
Background
Organic Light-Emitting Diode (OLED) has been widely used in the display and communication fields due to its low power consumption, high Light-Emitting brightness, low radiation to human body, and long life. In order to ensure that all gray scales meet the required gamma curve during the debugging of the OLED module, in particular during the gamma debugging process of the production line, all gamma binding points are usually required to be debugged from a default value towards a target value, and the number of gamma binding points is very large, which results in that the time required for independently debugging a module is usually about two minutes. Cost and productivity are important factors for a company to survive, and how to reduce cost and improve productivity has become very important nowadays.
Disclosure of Invention
In view of the above, the application provides a screen gamma debugging method and a display module, which solve the problems of overlong gamma debugging time and influence on production efficiency.
The screen gamma debugging method and the display module provided by the embodiment of the application comprise the following steps: step one, a first value group of optical parameter target values corresponding to an ith binding point is obtained, a second value group of optical parameter target values corresponding to adjacent binding points is given to the ith binding point, i is more than or equal to 2 and is a positive integer, and gray scales of different binding points are different; step two, each of the second value sets is adjusted to a third value set which is identical to each of the first value sets; and thirdly, assigning the third value group to the ith binding point and taking the third value group as a standard value of the ith binding point.
In one embodiment, the gray level of the ith binding point is greater than the gray level of the (i+1) th binding point.
In one embodiment, the number of binding points is less than the number of gray levels.
In one embodiment, the number of binding points with a smaller gray level is greater than the number of binding points with a larger gray level.
In one embodiment, the first set of values is different from the second set of values.
In one embodiment, in the first step, the gray level of the 1 st binding point is greater than the gray level of the i st binding point, and the optical parameter target value of the 1 st binding point is a given value, and the optical parameter target value of the i st binding point is an obtained value obtained by combining the 1 st or i-1 st binding point optical parameter target values according to the target gamma curve.
In one embodiment, in the step one, the i-th binding point is pre-assigned with a fourth value group corresponding to a virtual optical parameter value, and the operation of assigning the i-th binding point with a second value group corresponding to an optical parameter target value of an adjacent binding point includes replacing the fourth value group with the second value group.
In one embodiment, the optical parameters include color coordinates and brightness of the screen.
In one embodiment, the color coordinates and brightness of the screen are presented by a combination of light emission of the sub-pixels of n colors of the screen, n is 3 or more and is a positive integer, and any one of the first value group, the second value group, the third value group and the fourth value group includes n voltages respectively corresponding to the sub-pixels of n colors.
A display module comprising a screen and an IC, the IC being tuned by a screen gamma tuning method according to any one of the claims.
According to the screen gamma debugging method and the display module, the second value group corresponding to the optical parameter target value of the adjacent binding point is given to the ith binding point, the first value group corresponding to the optical parameter target value of the ith binding point is obtained, then the second value group is regulated to be a third value group equal to each of the first value groups, the third value group is given to the ith binding point, and the third value group is used as the standard value of the ith binding point. Because the ith binding point is debugged into the third value group on the basis of the second value group, the virtual optical parameter value of the ith binding point corresponding to the second value group is closer to the optical parameter value corresponding to the third value group compared with the optical parameter value of the second value group, the time for adjusting the second value group into the third value group is shorter, the debugging time of the ith binding point can be shortened, and the gamma debugging time of the whole screen body is further shortened.
Drawings
Fig. 1 is a flowchart of a gamma debugging method according to a first 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 be within the scope of the application.
Fig. 1 is a flowchart of a gamma debugging method according to a first embodiment of the present application.
As shown in fig. 1, the screen gamma debugging method in the present application includes:
step 1: obtaining a first value group of optical parameter target values corresponding to the ith binding point, and endowing the ith binding point with a second value group of optical parameter target values corresponding to adjacent binding points, wherein i is more than or equal to 2 and is a positive integer, and the gray scales of different binding points are different. The optical parameter target value is an optical parameter value of the ith binding point after gamma debugging, and a first value group corresponding to the optical parameter target value is obtained first, wherein the first value group is a voltage value. The optical number index value of the binding point adjacent to the ith binding point corresponds to a second value group, the second value group is a voltage value corresponding to the screen body IC when the binding point adjacent to the ith binding point has the optical parameter target value, and the second value group is given to the ith binding point, so that the second value group is stored in the screen body IC, and the ith binding point has the optical parameter corresponding to the second value group. The gamma debugging needs to debug a plurality of binding points, the ith binding point is any binding point except the first binding point, and different binding points have different gray scales.
Step 2: each of the second sets of values is adjusted by a third set of values equal to each of the first sets of values. Since the second value group is stored in the ith binding point IC, the first value group corresponds to the optical parameter target value of the ith binding point, each of the third value groups is equal to each of the first value groups, and the third value groups are also voltage values, so that the optical parameter corresponding to the third value groups is also the optical parameter target value of the ith binding point, and each of the second value groups is adjusted to each of the third value groups, so that the ith binding point can have the optical parameter target value.
Step 3: and assigning the third value group to the ith binding point as a standard value group of the ith binding point. And the third value group is used as a standard value of the ith binding point after gamma debugging and is stored in the IC, so that the ith binding point has light with the optical parameter target value. And finishing the debugging process of the ith binding point.
According to the gamma debugging method, the plurality of binding points are debugged, each binding point is adjusted to be a third value group on the basis that the IC is a second value group, and the third value group is given to the IC, so that compared with the direct debugging of each binding point, the gamma debugging method shortens the debugging time.
In an embodiment of the present application, the gray level of the ith binding point is greater than the gray level of the (i+1) th binding point. The gray scales of all binding points can be set from 0 to 255, and when in debugging, the binding points with high gray scales can be gradually debugged to the binding points with low gray scales, for example, the gray scale of the first binding point can be 255, the gray scale of the second binding point can be 248, the gray scale of the third binding point can be 240, and the like. The binding points are set according to a certain gray level sequence, the second value group of the ith binding point-1 can be endowed with the ith binding point, then the ith binding point is debugged, and compared with the direct debugging of the ith binding point, the debugging time is shortened, and the efficiency is improved.
It can be understood that the method can be used for debugging according to the sequence from high to low of the gray levels of the binding points, can also be used for debugging according to the sequence from low to high of the gray levels of the binding points, and can be used for adjusting the gray level sequence of the binding points according to actual requirements and user requirements.
It can be further understood that the gray level of the first binding point may be 255, the gray level of the first binding point may also be 0, or the gray level of the first binding point may be other values, and the specific value of the gray level of the first binding point may be adjusted according to the actual situation.
In an embodiment of the present application, the number of binding points is smaller than the gray scale number. For example, the gray scale may be 0-255, there are 256 gray scales in total, and 30 gray scales from 256 gray scales can be selected as binding points for debugging. The binding points should be selected in all gray scale ranges, for example, the gray scale range is 0-255, the minimum value of the gray scale of the binding points should be close to 0, the maximum value of the gray scale of the binding points should be close to 255, if the gray scale range is 0-255, the gray scale range of the binding points is 100-200, no binding points exist in the gray scale range between 0-100 and 200-255, and therefore, the display effect after gamma debugging still cannot reach the expected problem. The gray scale number of the binding points is covered with the whole gray scale range as much as possible, so that the uniformity of the display effect after gamma debugging can be improved, the number of the binding points is set to be smaller than the gray scale number, and the problems of too many binding points and overlong time are prevented.
It is understood that the number of binding points may be 30, 40 or 50, etc., and the specific number of binding points is not limited in the present application.
In an embodiment of the present application, the binding point with smaller gray scale is larger than the binding point with larger gray scale. For example: the gray scale range is 0-255, 20 binding points can be set in the gray scale range of 0-100, 15 binding points can be set in the gray scale range of 100-200, and 3 binding points can be set in the gray scale range of 200-255. Because the debugging difficulty of the smaller gray scale range is greater than that of the larger gray scale range, the binding number with smaller gray scale is set to be greater than that with larger gray scale, and the display effect after debugging can be improved.
In one embodiment of the present application, the first set of values is different from the second set of values. The first value group is the voltage corresponding to the optical parameter target value of the ith binding point, the second value group is the optical parameter target value corresponding to the adjacent binding point, which is given to the ith binding point, so that the second value group is the optical parameter target value of the corresponding adjacent binding point, the ith binding point is different from the adjacent binding point in gray scale, and in gamma debugging, the optical parameter target value of the ith binding point is also different from the optical parameter target value of the adjacent binding point, so that the first value group corresponding to the optical parameter target value of the ith binding point is different from the second value group corresponding to the optical parameter target value of the adjacent binding point.
In an embodiment of the present application, in step 1, the gray level of the 1 st binding point is greater than the gray level of the i st binding point, and the target value of the optical parameter of the 1 st binding point is a given value. The optical parameter target value of the 1 st binding point is set by a user, and after the optical parameter target value of the 1 st binding point is determined, the voltage value corresponding to the optical parameter target value of the 1 st binding point is written into the IC as the standard value of the 1 st binding point. In the above embodiment, the setting of the binding points may be performed from large to small according to the gray levels, and the gray level of the 1 st binding point should be the largest, so the gray level of the 1 st binding point is greater than the gray level of the i th binding point, and the target value of the optical parameter of the 1 st binding point is manually set according to the needs of the client. The optical parameter target value of the ith binding point is an obtained value obtained by combining the optical parameter target value of the 1 st or the (i-1) th binding point according to the target gamma curve, and because the optical parameter target value of the 1 st binding point is artificially set, the optical parameter target value of the ith binding point can be calculated according to the optical parameter target value of the first binding point and the target gamma curve. The i-1 th optical parameter target value can be calculated according to the optical parameter target value of the first binding point and the gamma curve, and the i-1 th optical parameter target value can also be calculated according to the optical parameter target value of the i-1 th binding point and the target gamma curve, so that the i-1 th optical parameter target value can be obtained according to the target gamma curve and the 1 st optical parameter target value of the 1 st binding point, and can be obtained according to the target gamma curve and the i-1 st optical parameter target value of the binding point. Because the optical parameter target value of the 1 st binding point is considered to be set according to the requirement of a user, the optical parameter target value of the i th binding point obtained by combining the optical parameter target values of the 1 st or i-1 st binding point according to the target gamma curve meets the requirement of the target gamma curve and the customer.
It can be understood that the gamma value of the target gamma curve can be 2.2, 2.0 or 2.5, etc., and the gamma value of the target gamma curve can be adjusted according to actual requirements, and the specific gamma value of the target gamma curve is not limited in the application.
In an embodiment of the present application, in step 1, the i-th binding point is pre-assigned with a fourth value set corresponding to a virtual optical parameter value, where the virtual optical parameter value is an optical parameter value preset when the IC leaves the factory, the fourth value set is a voltage value corresponding to the virtual optical parameter value, and the IC leaves the factory and is stored in the IC. The operation of the ith binding point to give the second value group corresponding to the optical parameter target value of the adjacent binding point comprises the steps of replacing the fourth value group by the second value group, writing the second value group into the IC to replace the fourth value group due to the fact that the second value group corresponds to the optical parameter target value of the adjacent binding point, so that gamma debugging of the ith binding point on the basis of the second value group can be achieved, the second value group is debugged into the first value group, and compared with the fact that the difference value between the second value group and the first value group is smaller than the difference value between the fourth value group and the first value group, the time for gamma debugging of the ith binding point on the basis of the fourth value group is shortened, and the debugging efficiency is improved.
In one embodiment of the application, the optical parameters may include color coordinates and brightness, and the color coordinates may adjust the display tone, for example, to a warm tone or a cool tone. The display picture can be clear and comfortable by adjusting the brightness and the color coordinates of the binding points, and the display effect can reach the requirements of users as much as possible. The color coordinates are set manually according to the requirements of clients, calculation according to gamma curves is not needed, and the color coordinates of all binding points are the same.
It will be appreciated that the optical parameters may include brightness and color coordinates, and may include other parameters such as saturation, and the specific type of optical parameters is not limited by the present application.
In an embodiment of the present application, the color coordinates and brightness of the panel are represented by the luminous combination of the sub-pixels of the color in n of the panel, where n is greater than or equal to 3 and is a positive integer, for example: the n colors may be red, green, blue, yellow, white, etc., and when n=3, the three colors are optimally red, green, and blue. The first value group includes n voltages respectively corresponding to the sub-pixels of n colors, the second value group includes n voltages respectively corresponding to the sub-pixels of n colors, the third value group includes n voltages respectively corresponding to the sub-pixels of n colors, and the fourth value group includes n voltages respectively corresponding to the sub-pixels of n colors. n voltages of the sub-pixels of n colors are respectively registered in the IC, and different voltages exhibit different light emitting effects. The n voltages of the n-color sub-pixels are adjusted, so that the display module can display different luminous effects, and the n voltages of the n-color sub-pixels are adjusted through gamma adjustment, so that the display module displays the luminous effects meeting the optical parameter target values.
In an embodiment of the present application, the display module includes a screen body and an IC, and the IC is adjusted by the gamma adjustment method described in the above embodiment. The IC is electrically connected with the screen body, and the display module is powered according to the voltage value stored in the IC after the adjustment is completed, so that the display module presents the luminous effect required by a user.
It can be understood that the display module can be applied to mobile phones, telephones or vehicle-mounted mobile electronic display devices, and the specific application of the display module is not limited.
In one embodiment of the application, a gamma debugging device comprises a light sensor, a processor and a register. The optical sensor is used for acquiring an optical parameter value of a binding point on the display module to be debugged; the processor is used for running gamma debugging programs; the registers function to store the gamma debugging program and optical parameters that run on the processor. Wherein the light sensor is electrically connected to the processor and the gamma debugging program when executed by the processor implements the steps of the gamma debugging method described in the above embodiments. The gamma debugging device obtains a first value group corresponding to an optical parameter target value of an ith binding point, and endows the ith binding point with a second value group corresponding to an optical parameter target value of an adjacent binding point, wherein i is more than or equal to 2 and is a positive integer; adjusting the second set of values to a third set of values that is identical to the first set of values; the third value group is assigned to the ith binding point and is used as the standard value of the ith binding point.
It can be understood that the gamma debugging device can be used for debugging a mobile phone display screen, debugging a computer display screen, debugging display screens of some vehicle-mounted display devices and the like. The application does not limit the specific application range of the gamma debugging device.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is to be construed as including any modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (9)
1. The screen gamma debugging method is characterized by comprising the following steps of:
step one, determining an optical parameter target value of a 1 st binding point, and writing a voltage value corresponding to the optical parameter target value of the 1 st binding point into a screen IC as a standard value of the 1 st binding point; obtaining a first value group of optical parameter target values corresponding to an ith binding point, wherein the first value group is a voltage value, a second value group of optical parameter target values corresponding to adjacent binding points is given to the ith binding point, i is more than or equal to 2 and is a positive integer, gray scales of different binding points are different, and the second value group is a voltage value corresponding to a screen IC when the binding point adjacent to the ith binding point has the optical parameter target value;
step two, each of the second value sets is regulated to be a third value set which is the same as each of the first value sets, and the third value sets are also voltage values;
and thirdly, assigning the third value group to the ith binding point and taking the third value group as a standard value group of the ith binding point.
2. The screen gamma debugging method according to claim 1, wherein the gray level of the ith binding point is greater than the gray level of the (i+1) th binding point.
3. The screen gamma debugging method according to claim 2, wherein the number of binding points is effective for gray scale number.
4. A screen gamma adjustment method according to any one of claims 1 to 3, characterized in that the first value set is different from the second value set.
5. A screen gamma adjustment method according to any one of claims 1 to 3, wherein in the first step,
the gray level of the 1 st binding point is larger than the gray level of the i th binding point, and the optical parameter target value of the 1 st binding point is a given value,
the optical parameter target value of the ith binding point is an obtained value obtained by combining the optical parameter target value of the 1 st or the i-1 st binding point according to the target gamma curve.
6. The screen gamma adjustment method according to claim 1, wherein in the first step, the ith binding point is pre-assigned with a fourth value group corresponding to a virtual optical parameter value,
the operation of assigning the ith binding point a second set of values corresponding to target values of optical parameters of neighboring binding points includes replacing the fourth set of values with the second set of values.
7. The screen gamma adjustment method according to claim 6, wherein the optical parameters include color coordinates and brightness of the screen.
8. The gamma adjustment method according to claim 7, wherein the color coordinates and brightness of the screen are represented by a combination of light emission of sub-pixels of n colors of the screen, n is equal to or greater than 3 and is a positive integer,
any one of the first, second, third, and fourth sets of values includes n voltages corresponding to the n colors of subpixels, respectively.
9. A display module comprising a screen and an IC, the IC being tuned by the screen gamma tuning method according to any one of claims 1 to 7.
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| CN110675818B (en) * | 2019-12-03 | 2020-05-19 | 武汉精立电子技术有限公司 | Curve matching-based module Gamma correction method and system |
| CN111551348B (en) * | 2020-05-08 | 2022-03-25 | 昆山国显光电有限公司 | Gamma debugging method and device |
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