CN112908240B

CN112908240B - Gamma debugging method, device and equipment

Info

Publication number: CN112908240B
Application number: CN202110196072.8A
Authority: CN
Inventors: 牛浩之; 王铁钢; 韩光光; 上官修宁; 姜海斌
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2022-04-15
Anticipated expiration: 2041-02-22
Also published as: CN112908240A

Abstract

The application discloses a gamma debugging method, a gamma debugging device and gamma debugging equipment. The method comprises the following steps: acquiring a voltage ratio and a target gray scale value of a first sub-pixel and a second sub-pixel of a first display panel under a first gray scale binding point, wherein the first gray scale binding point is less than or equal to the target gray scale value; respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of a second display panel under the first gray scale binding point, so that the ratio of the first voltage initial value to the second voltage initial value of the second display panel is equal to the voltage ratio; and performing gamma debugging on the second display panel under the first gray scale binding point based on the first voltage initial value and the second voltage initial value of the second display panel. According to the embodiment of the application, the problem that the color cast of the display panel is easy to occur due to the fact that gamma debugging is carried out in a low gray scale range can be solved.

Description

Gamma debugging method, device and equipment

Technical Field

The application relates to the technical field of display, in particular to a gamma debugging method, a gamma debugging device and gamma debugging equipment.

Background

Before the display panel leaves the factory, gamma debugging is usually performed on each display panel. At present, a method for gamma debugging of a display panel sets voltage values corresponding to gray scale binding points according to experience, provides the set voltage values for the display panel to light the display panel, and acquires optical parameters such as brightness and color coordinates of the display panel by using measuring equipment. Generally, some gray scale binding points are set in both a high gray scale range and a low gray scale range, and when the display brightness of the display panel is low, the display brightness is limited by the performance of the measuring equipment, the precision and the stability of the measuring equipment are poor, so that the display panel is prone to color cast after gamma debugging is performed in the low gray scale range.

Disclosure of Invention

The embodiment of the application provides a gamma debugging method, a gamma debugging device and gamma debugging equipment, which can solve the problem that color cast is easy to occur on a display panel when gamma debugging is carried out in a low gray scale range.

In a first aspect, an embodiment of the present application provides a gamma debugging method, which includes: acquiring a voltage ratio and a target gray scale value of a first sub-pixel and a second sub-pixel of a first display panel under a first gray scale binding point, wherein the first gray scale binding point is less than or equal to the target gray scale value; respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of a second display panel under the first gray scale binding point, so that the ratio of the first voltage initial value to the second voltage initial value of the second display panel is equal to the voltage ratio; and performing gamma debugging on the second display panel under the first gray scale binding point based on the first voltage initial value and the second voltage initial value of the second display panel.

In a possible implementation manner of the first aspect, before performing gamma debugging on the second display panel under the first gray scale binding point based on the first voltage initial value and the second voltage initial value of the second display panel, the method further includes:

setting a third voltage initial value of a third sub-pixel of the second display panel under the first gray scale binding point;

correspondingly, based on the first voltage initial value and the second voltage initial value of the second display panel, the gamma debugging is performed on the second display panel under the first gray scale binding point, and the method comprises the following steps:

judging whether the brightness measurement value of the second display panel under the first voltage initial value, the second voltage initial value and the third voltage initial value of the second display panel meets the target brightness requirement of the second display panel under the first gray scale tie point;

if the target brightness requirement is not met, adjusting the first voltage initial value, the second voltage initial value and the third voltage initial value of the second display panel until the brightness measured values of the second display panel under the adjusted first voltage initial value, the adjusted second voltage initial value and the adjusted third voltage initial value meet the target brightness requirement.

In a possible implementation manner of the first aspect, the method further includes:

acquiring a voltage ratio of a first sub-pixel and a second sub-pixel of an N-1 th display panel under a first gray scale binding point, wherein N is not less than 3 and is an integer;

respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of the Nth display panel under the first gray scale binding point, so that the ratio of the first voltage initial value to the second voltage initial value of the Nth display panel is equal to the voltage ratio of the first sub-pixel and the second sub-pixel of the N-1 th display panel under the first gray scale binding point;

and performing gamma debugging on the Nth display panel under the first gray scale binding point based on the first voltage initial value and the second voltage initial value of the Nth display panel.

obtaining a voltage ratio mean value determined by each voltage ratio of a first sub-pixel and a second sub-pixel of a plurality of display panels under a first gray scale binding point;

respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of an Nth display panel under a first gray scale binding point, so that the ratio of the first voltage initial value to the second voltage initial value of the Nth display panel is equal to a voltage ratio mean value, wherein N is more than or equal to 3 and is an integer;

In a possible implementation manner of the first aspect, before the setting the first voltage initial value and the second voltage initial value of the first sub-pixel and the second sub-pixel of the nth display panel under the first gray scale binding point, respectively, the method further includes:

and taking the ratio of the adjusted first voltage initial value and the adjusted second voltage initial value of the second display panel as the voltage ratio of the first sub-pixel and the second sub-pixel of the second display panel under the first gray scale binding point.

In a possible implementation manner of the first aspect, before the setting the first voltage initial value and the second voltage initial value of the first sub-pixel and the second sub-pixel of the second display panel under the first gray scale binding point respectively, the method further includes:

respectively setting a first voltage empirical value, a second voltage empirical value and a third voltage empirical value of a first sub-pixel, a second sub-pixel and a third sub-pixel of a second display panel under the first gray scale binding;

judging whether the brightness measurement value of the second display panel under the first voltage empirical value, the second voltage empirical value and the third voltage empirical value meets the target brightness requirement or not;

if the first voltage empirical value, the second voltage empirical value and the third voltage empirical value are not in accordance with the target brightness requirement, adjusting the first voltage empirical value, the second voltage empirical value and the third voltage empirical value until the brightness measured value of the second display panel under the adjusted first voltage empirical value, the adjusted second voltage empirical value and the adjusted third voltage empirical value is in accordance with the target brightness requirement;

judging whether the color coordinate measurement value of the second display panel under the adjusted first voltage empirical value, the adjusted second voltage empirical value and the adjusted third voltage empirical value meets the target color coordinate requirement or not;

if the target color coordinate requirement is not met, the adjusted third voltage empirical value is kept, the adjusted first voltage empirical value and the adjusted second voltage empirical value are readjusted, and the ratio of the readjusted adjusted first voltage empirical value to the readjusted adjusted second voltage empirical value is equal to the voltage ratio;

correspondingly, respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of a second display panel under the first gray scale binding point, including:

and taking the readjusted adjusted first voltage empirical value as a first voltage initial value of the second display panel, and taking the readjusted adjusted second voltage empirical value as a second voltage initial value of the second display panel.

In one possible implementation manner of the first aspect, setting a third voltage initial value of a third sub-pixel of the second display panel under the first gray scale binding point includes:

and taking the adjusted third voltage empirical value as a third voltage initial value of the second display panel.

In a possible implementation manner of the first aspect, before obtaining the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel under the first gray scale binding point and the target gray scale value, the method further includes:

performing gamma debugging on the first display panel under the multiple gray scale binding points, and determining the voltage ratio of a first sub-pixel and a second sub-pixel of the first display panel under each gray scale binding point;

selecting one gray scale binding point from the plurality of gray scale binding points as a target gray scale value, enabling the voltage ratio value corresponding to the gray scale binding point larger than the target gray scale value to be larger than 1, and enabling the voltage ratio value corresponding to the gray scale binding point smaller than or equal to the target gray scale value to be smaller than or equal to 1.

In a possible implementation manner of the first aspect, after determining a voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel at each gray level binding point, the gamma debugging method provided by the embodiment of the present application may further include:

fitting a relation curve between the voltage ratio and the gray scale of a first sub-pixel and a second sub-pixel of the first display panel;

correspondingly, acquiring the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel under the first gray scale binding point comprises the following steps:

and acquiring the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel under the first gray scale binding point from the relation curve of the voltage ratio and the gray scale of the first display panel.

In a second aspect, an embodiment of the present application further provides a gamma debugging apparatus, including:

the data acquisition module is used for acquiring a voltage ratio of a first sub-pixel and a second sub-pixel of the first display panel under a first gray scale binding point and a target gray scale, wherein the first gray scale binding point is less than or equal to the target gray scale;

the initial value setting module is used for respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of the second display panel under the first gray scale binding point, so that the ratio of the first voltage initial value and the second voltage initial value of the second display panel is equal to the voltage ratio;

and the debugging module is used for carrying out gamma debugging on the second display panel under the first gray scale binding point based on the first voltage initial value and the second voltage initial value of the second display panel.

In a third aspect, an embodiment of the present application provides a gamma debugging device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the gamma debugging method according to any one of the embodiments of the first aspect.

The inventor of the present application finds that, when the display panel meets the color coordinate requirement in the low gray scale range, the data voltage value of the first sub-pixel and the data voltage value of the second sub-pixel of the display panel have a certain ratio. In the embodiment of the application, a voltage ratio and a target gray-scale value of a first sub-pixel and a second sub-pixel of a first display panel under a first gray-scale binding point are obtained first, and when gamma debugging is performed on a second display panel under the first gray-scale binding point, only a ratio of a first voltage initial value corresponding to the first sub-pixel of the second display panel to a second voltage initial value corresponding to the second sub-pixel needs to be set to be equal to the voltage ratio, so that gamma debugging is performed on the second display panel based on the first voltage initial value and the second voltage initial value of the second display panel. The ratio of the first voltage initial value to the second voltage initial value is equal to the voltage ratio acquired in advance, and assignment is more accurate according to the first voltage initial value and the second voltage initial value compared with the situation that the second display panel is set randomly, so that the color cast problem of the second display panel in a low gray scale range can be improved.

Drawings

Other features, objects, and advantages of the present application will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.

FIG. 1 is a schematic diagram showing color coordinates collected by a measuring device at different gray scales;

FIG. 2 is a flow chart illustrating a gamma debugging method according to an embodiment of the present disclosure;

FIG. 3 is a diagram illustrating voltage ratios of sub-pixels of a display panel at different gray scales;

FIG. 4 is a flow chart illustrating a gamma debugging method according to another embodiment of the present disclosure;

FIG. 5 is a flow chart illustrating a gamma debugging method according to another embodiment of the present application;

FIG. 6 is a flowchart illustrating a gamma debugging method according to another embodiment of the present application

FIG. 7 is a flowchart illustrating a gamma debugging method according to another embodiment of the present application

FIG. 8 is a flowchart illustrating a gamma debugging method according to another embodiment of the present application

FIG. 9 is a schematic structural diagram of a gamma debugging apparatus according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a gamma debugging apparatus according to an embodiment of the present application.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Fig. 1 shows a schematic diagram of color coordinates acquired by a measuring device at different gray scales. As shown in fig. 1, the abscissa in fig. 1 represents the gray scale, the ordinate represents the coordinate value of the color coordinate, curve 1 represents the color coordinate x, and curve 2 represents the color coordinate y. As can be seen from fig. 1, in the high gray scale range, the color coordinates (x, y) collected by the measurement device are relatively stable, and in the low gray scale range, the floatability of the color coordinates (x, y) collected by the measurement device is relatively large, which means that the accuracy and stability of the measurement device are poor in the low gray scale range. That is, in the low gray scale range, the color coordinates acquired by the measurement device are not accurate enough, so that color cast of the display panel is easily caused when gamma debugging is performed in the low gray scale range.

Embodiments of a gamma debugging method, a gamma debugging apparatus, and a gamma debugging device are provided in the embodiments of the present application, and the embodiments of the gamma debugging method, the gamma debugging apparatus, and the gamma debugging device will be described below with reference to the accompanying drawings.

Fig. 2 is a flowchart illustrating a gamma debugging method according to an embodiment of the present application. As shown in fig. 2, the gamma debugging method provided in the embodiment of the present application includes steps 110 to 130.

Step 110, obtaining a voltage ratio of a first sub-pixel and a second sub-pixel of the first display panel under a first gray scale tie point and a target gray scale value, wherein the first gray scale tie point is less than or equal to the target gray scale value.

Step 120, respectively setting a first voltage initial value and a second voltage initial value of the first sub-pixel and the second sub-pixel of the second display panel under the first gray scale tie point, so that a ratio of the first voltage initial value and the second voltage initial value of the second display panel is equal to a voltage ratio.

Step 130, performing gamma debugging on the second display panel under the first gray scale tie point based on the first voltage initial value and the second voltage initial value of the second display panel.

The inventor of the present application finds that, when the display panel meets the color coordinate requirement in the low gray scale range, the data voltage value of the first sub-pixel and the data voltage value of the second sub-pixel of the display panel have a certain ratio. Specifically, as shown in fig. 3, fig. 3 is a schematic diagram of a voltage ratio of each sub-pixel of the display panel without color shift. In fig. 3, the abscissa indicates a gray scale, the ordinate indicates a ratio of data voltages of the respective sub-pixels, a curve 11 indicates a first sub-pixel, a curve 12 indicates a second sub-pixel, and a curve 13 indicates a third sub-pixel. Fig. 3 is a diagram illustrating a normalization process of data voltages of the first sub-pixel, the second sub-pixel, and the third sub-pixel, for example, when the ordinate of the first sub-pixel is 0.315, the ordinate of the second sub-pixel is 0.325, and the ordinate of the third sub-pixel is 0.36 in the 50 gray scale, it indicates that the voltage ratio of the first sub-pixel, the second sub-pixel, and the third sub-pixel is 0.315: 0.325: 0.36, it can be seen that, at the gray level of 50, the voltage ratio of the first sub-pixel to the second sub-pixel is 0.315: 0.325. fig. 3 can also be understood as the ratio of the data voltages of the sub-pixels at different gray scales after normalization of the data voltages of the first sub-pixel, the second sub-pixel, and the third sub-pixel.

As can be seen from fig. 3, the duty ratio of the data voltage of the third sub-pixel is almost constant in the different gray levels, the duty ratios of the data voltages of the first and second sub-pixels are almost constant in the high gray level range, and the duty ratio of the data voltage of the first sub-pixel is gradually decreased with the decrease of the gray level and the duty ratio of the data voltage of the second sub-pixel is gradually increased with the decrease of the gray level in the low gray level range. That is, in the low gray scale range, the voltage ratio of the first sub-pixel to the second sub-pixel gradually decreases as the gray scale decreases.

Therefore, when the display panel is subjected to gamma debugging at a certain gray scale binding point in the low gray scale range, the ratio of the initial voltage values of the first sub-pixel and the second sub-pixel of the display panel under the gray scale binding point is in accordance with the voltage ratio of the first sub-pixel and the second sub-pixel corresponding to the gray scale binding point, so that the problem of color cast of the display panel caused by poor precision and stability of measuring equipment during the gamma debugging in the low gray scale range can be improved,

according to the gamma debugging method provided by the embodiment of the application, the voltage ratio and the target gray-scale value of the first sub-pixel and the second sub-pixel of the first display panel under the first gray-scale binding point are firstly obtained, when the gamma debugging is carried out on the second display panel under the first gray-scale binding point, the ratio of the first voltage initial value corresponding to the first sub-pixel of the second display panel and the second voltage initial value corresponding to the second sub-pixel is only required to be equal to the voltage ratio which is obtained in advance, and then the gamma debugging is carried out on the second display panel based on the first voltage initial value and the second voltage initial value of the second display panel. The ratio of the first voltage initial value to the second voltage initial value is equal to the voltage ratio acquired in advance, and assignment is more accurate according to the first voltage initial value and the second voltage initial value compared with the situation that the second display panel is set randomly, so that the color cast problem of the second display panel in a low gray scale range can be improved.

For example, the first display panel and the second display panel may be display panels of the same batch. Compared with display panels of different batches, the voltage difference value of the previous display panel in the display panels of the same batch is more referential to the next display panel.

In this context, the voltage value may be understood as a data voltage value required to be provided by the driving chip, and the data voltage value is transmitted to the sub-pixels of the display panel through the data lines of the display panel, so that the sub-pixels generate the driving current and emit light. The voltage ratio of the first sub-pixel to the second sub-pixel can be understood as the ratio of the data voltage value of the first sub-pixel to the data voltage value of the second sub-pixel.

For example, the inventors of the present application have found that the duty ratio of the data voltage of the blue sub-pixel is almost constant at different gray levels, the duty ratios of the data voltages of the red and green sub-pixels are almost constant in the high gray level range, and the duty ratio of the data voltage of the red sub-pixel is gradually decreased with a decrease in gray level and the duty ratio of the data voltage of the green sub-pixel is gradually increased with a decrease in gray level in the low gray level range. Thus, the first sub-pixel herein may be a red sub-pixel, the second sub-pixel may be a green sub-pixel, and the third sub-pixel may be a blue sub-pixel.

In some alternative embodiments, the target gray scale value may be an upper limit value of the low gray scale range, and the target gray scale value may be set empirically. For example, the first display panel and the second display panel are 8-bit display panels, that is, the first display panel and the second display panel both have 0-255 levels of gray scales with 256 levels, for example, the target gray scale value may be 64 gray scales, 75 gray scales, and the like. The first gray level binding point is less than or equal to the target gray level value, and for example, the target gray level value is 64 gray levels, the first gray level binding point may be any one of 0 to 64 gray levels.

In other alternative embodiments, as shown in fig. 4, before step 110, the gamma debugging method provided in the embodiment of the present application may further include step 111 and step 112.

Step 111, performing gamma debugging on the first display panel under the plurality of gray scale binding points, and determining the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel under each gray scale binding point.

Step 112: selecting one gray scale binding point from the plurality of gray scale binding points as a target gray scale value, enabling the voltage ratio value corresponding to the gray scale binding point larger than the target gray scale value to be larger than 1, and enabling the voltage ratio value corresponding to the gray scale binding point smaller than or equal to the target gray scale value to be smaller than or equal to 1.

For example, still taking the first display panel and the second display panel as 8-bit display panels as an example, some numerical values can be selected from 0 to 255 as gray level tie points. For example, the gray level bindings may include gray levels of 0, 32, 64, 96, 128, 160, 192, 224, 255. Of course, the number of gray level bindings and the specific numerical values of the gray level bindings may be set differently from the above examples, which are not limited in this application.

In step 111, gamma adjustment may be performed on the first display panel under the gray scale binding points to determine actual voltage values of the first sub-pixel and the second sub-pixel of the first display panel corresponding to the gray scale binding points, and a ratio of the actual voltage value of the first sub-pixel to the actual voltage value of the second sub-pixel under each gray scale binding point is used as a voltage ratio of the first sub-pixel to the second sub-pixel under each gray scale binding point. It can be understood that the actual brightness of the first display panel at the actual voltage value meets the target brightness requirement, and the actual color coordinate of the first display panel at the actual voltage value meets the color coordinate requirement.

In step 112, the target gray-scale value may be understood as a transition gray-scale value where the voltage ratio of the first sub-pixel to the second sub-pixel starts to change, and since the gray-scale value corresponds to the luminance, the smaller the gray-scale value is, the lower the luminance is, and the larger the gray-scale value is, the higher the luminance is, the target gray-scale value may also be understood as a transition luminance where the voltage ratio of the first sub-pixel to the second sub-pixel starts to change.

According to the embodiment of the application, the target gray scale value can be accurately determined, namely, the range of the low gray scale can be accurately determined.

For example, after step 111, the gamma debugging method provided in the embodiment of the present application may further include: and fitting a relation curve between the voltage ratio and the gray scale of the first sub-pixel and the second sub-pixel of the first display panel. Correspondingly, the step 110 of obtaining the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel under the first gray scale binding may specifically include: and acquiring the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel under the first gray scale binding point from the relation curve of the voltage ratio and the gray scale of the first display panel.

Specifically, after step 111, the voltage ratio of each first sub-pixel and each second sub-pixel of the first display panel at n gray levels within the gray level range [0, target gray level ] can be further determined, where n is an integer greater than or equal to 2. Illustratively, the target color coordinate (x, y) of the first display panel is (0.299,0.315), and for each gray scale of n gray scales within [0, target gray scale value ], when the color coordinate x of the first display panel is in the range of [0.298, 0.300] and y is in the range of [0.314, 0.316], the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel at the time can be recorded. Then, a relation curve between the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel and the gray scale in the gray scale range [0, target gray scale value ] is fitted according to the voltage ratios of the n first sub-pixels and the second sub-pixels, and the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel at any gray scale value in the range [0, target gray scale value ] can be obtained according to the relation curve, so that the first gray scale binding point in the step 110 can be any gray scale value in the range [0, target gray scale value ]. It will be appreciated that the greater the value of n, the more accurate the relationship curve is fitted. Illustratively, the relationship may be a curve as shown in FIG. 3. For example, the relationship curve may include two curves, a curve 11 represents the data voltage of the first sub-pixel of the first display panel corresponding to the gray scale, and another curve 12 represents the data voltage of the second sub-pixel of the first display panel corresponding to the gray scale. Of course, when the display panel has three color sub-pixels, the third curve 13 may be used to represent the corresponding relationship between the data voltage and the gray scale of the third sub-pixel of the first display panel, and the ratio of the ordinate of the three curves corresponding to any abscissa (i.e. the gray scale value) is the voltage ratio of each sub-pixel.

In some optional embodiments, as shown in fig. 5, before step 130, the gamma debugging method provided in the embodiments of the present application may further include step 121.

Step 121, setting a third voltage initial value of a third sub-pixel of the second display panel under the first gray scale binding.

Correspondingly, the step 130 in the gamma debugging method provided by the embodiment of the present application may include a step 131 and a step 132.

Step 131, judging whether the brightness measurement value of the second display panel under the first voltage initial value, the second voltage initial value and the third voltage initial value of the second display panel meets the target brightness requirement of the second display panel under the first gray scale binding point;

step 132, if the target brightness requirement is not met, adjusting the first voltage initial value, the second voltage initial value and the third voltage initial value of the second display panel until the brightness measured values of the second display panel under the adjusted first voltage initial value, the adjusted second voltage initial value and the adjusted third voltage initial value meet the target brightness requirement.

For example, in step 110, voltage ratios of the first sub-pixel, the second sub-pixel and the third sub-pixel of the first display panel under the first gray scale binding point may be obtained, so that the ratios of the first voltage initial value, the second voltage initial value and the third voltage initial value set in

steps

110 and 121 are equal to the voltage ratios of the first sub-pixel, the second sub-pixel and the third sub-pixel of the first display panel under the first gray scale binding point.

When the ratio of the voltage initial values of the sub-pixels of the second display panel under the first gray scale tie point meets the obtained voltage ratio, the second display panel meets the target color coordinate requirement, but the target brightness requirement may not be met, and then it may be further determined in step 131 whether the target brightness requirement is met. For example, the target brightness requirement may be a specific value or a certain brightness range, which is not specifically limited in this application. Further, if the target brightness requirement is not met, the specific values of the first voltage initial value, the second voltage initial value and the third voltage initial value of the second display panel need to be further adjusted until the adjusted target brightness requirement is met.

In addition, in step 131, if the luminance measurement values of the second display panel under the first voltage initial value, the second voltage initial value and the third voltage initial value meet the target luminance requirement of the second display panel under the first gray level tie point, it is not necessary to adjust the first voltage initial value, the second voltage initial value and the third voltage initial value of the second display panel.

According to the embodiment of the application, the second display panel can be prevented from meeting the brightness requirement while the color cast of the second display panel is avoided.

For example, the first voltage initial value and the second voltage initial value of the second display panel in step 120 may be directly set empirically. In some optional embodiments, in order to make the set first voltage initial value and the set second voltage initial value of the second display panel more accurate, as shown in fig. 6, before step 120, the gamma debugging method provided by the embodiment of the present application may further include steps 122 to 126.

Step 122, respectively setting a first voltage empirical value, a second voltage empirical value and a third voltage empirical value of a first sub-pixel, a second sub-pixel and a third sub-pixel of a second display panel under the first gray scale binding.

Step 123, determining whether the luminance measurement value of the second display panel under the first voltage empirical value, the second voltage empirical value and the third voltage empirical value meets the target luminance requirement.

Step 124, if the target brightness requirement is not met, adjusting the first voltage empirical value, the second voltage empirical value and the third voltage empirical value until the brightness measurement values of the second display panel under the adjusted first voltage empirical value, the adjusted second voltage empirical value and the adjusted third voltage empirical value meet the target brightness requirement.

Step 125, determining whether the color coordinate measurement value of the second display panel under the adjusted first voltage empirical value, the adjusted second voltage empirical value and the adjusted third voltage empirical value meets the target color coordinate requirement.

Step 126, if the target color coordinate requirement is not met, the adjusted third voltage empirical value is maintained, and the adjusted first voltage empirical value and the adjusted second voltage empirical value are readjusted, so that the ratio of the readjusted adjusted first voltage empirical value to the readjusted adjusted second voltage empirical value is equal to the voltage ratio.

Correspondingly, step 120 includes: and taking the readjusted adjusted first voltage empirical value as a first voltage initial value of the second display panel, and taking the readjusted adjusted second voltage empirical value as a second voltage initial value of the second display panel.

According to the embodiment of the application, the brightness measurement value of the second display panel under the adjusted first voltage empirical value, the adjusted second voltage empirical value and the adjusted third voltage empirical value can meet the target brightness requirement of the second display panel under the first gray scale binding point, and further judge whether the target color coordinate requirement is met or not on the basis of meeting the target brightness requirement, and set the first voltage initial value and the second voltage initial value of the second display panel, so that the setting of the voltage initial value is more accurate.

Since the voltage duty ratio of the third sub-pixel is almost unchanged, in step 126, the adjusted first voltage empirical value and the adjusted second voltage empirical value may be further readjusted based on the third sub-pixel while keeping the adjusted third voltage empirical value corresponding to the third sub-pixel unchanged. For example, the voltage ratio of the first sub-pixel, the second sub-pixel and the third sub-pixel at the first gray scale binding point is 0.315: 0.325: for example, if the adjusted third voltage empirical value corresponding to the third sub-pixel is 0.36V, the readjusted adjusted first voltage empirical value is 0.315V, and the readjusted adjusted second voltage empirical value is 0.325V.

In some alternative embodiments, please continue to refer to fig. 6, corresponding step 121 includes: and taking the adjusted third voltage empirical value as a third voltage initial value. As described above, the voltage duty ratio of the third subpixel is almost constant, and thus the third subpixel can be used as a reference.

It is understood that, in step 123, if the luminance measurement values of the second display panel under the first, second and third voltage empirical values meet the target luminance requirement of the second display panel under the first gray scale binding point, the first, second and third voltage empirical values do not need to be adjusted. Further in step 125, it is determined that the color coordinate measurement values of the second display panel under the first voltage empirical value, the second voltage empirical value and the third voltage empirical value meet the target color coordinate requirement.

It is understood that, in step 125, if the color coordinate measurement values of the second display panel under the adjusted first voltage empirical value, the adjusted second voltage empirical value and the adjusted third voltage empirical value meet the target color coordinate requirement, the adjusted first voltage empirical value, the adjusted second voltage empirical value and the adjusted third voltage empirical value do not need to be readjusted, and further, step 120 may include: and taking the adjusted first voltage empirical value as a first voltage initial value of the second display panel, and taking the adjusted second voltage empirical value as a second voltage initial value of the second display panel.

In some optional embodiments, as shown in fig. 7, after step 132, the gamma debugging method provided in the embodiments of the present application may further include steps 141 to 143.

Step 141, obtaining a voltage ratio of the first sub-pixel and the second sub-pixel of the N-1 th display panel under the first gray scale tie point, wherein N is greater than or equal to 3 and is an integer.

Step 142, respectively setting a first voltage initial value and a second voltage initial value of the first sub-pixel and the second sub-pixel of the nth display panel under the first gray scale binding, so that the ratio of the first voltage initial value and the second voltage initial value of the nth display panel is equal to the voltage ratio of the first sub-pixel and the second sub-pixel of the nth-1 display panel under the first gray scale binding.

And 143, performing gamma debugging on the Nth display panel under the first gray scale binding point based on the first voltage initial value and the second voltage initial value of the Nth display panel.

That is to say, when performing gamma debugging on the subsequent display panel under the first gray scale binding point, the voltage ratio of the first sub-pixel and the second sub-pixel of the previous display panel under the first gray scale binding point is all parameters to set the voltage initial values corresponding to the first sub-pixel and the second sub-pixel of the subsequent display panel.

Under the condition that N is larger, the corresponding voltage ratio is more accurate, so that the assignment of the voltage initial value of the Nth display panel is more accurate, and the color cast problem of the second display panel in a low gray scale range can be improved.

In other alternative embodiments, as shown in fig. 8, after step 132, the gamma debugging method provided in the embodiment of the present application may further include steps 151 to 153.

Step 151, obtaining a voltage ratio mean value determined by voltage ratios of first sub-pixels and second sub-pixels of a plurality of display panels under a first gray scale tie point;

step 152, respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of the Nth display panel under the first gray scale binding point, so that the ratio of the first voltage initial value to the second voltage initial value of the Nth display panel is equal to the voltage ratio mean value, wherein N is not less than 3 and is an integer;

step 153, performing gamma debugging on the nth display panel under the first gray scale tie point based on the first voltage initial value and the second voltage initial value of the nth display panel.

Illustratively, in step 151, the plurality of display panels may include first to N-1 th display panels.

Even if the display panels belong to the same batch, the characteristics of the display panels are inevitably different, when the subsequent display panel is subjected to gamma debugging, the determined voltage ratio mean value is used as a reference, the influence of different characteristics of the display panels can be reduced as much as possible by taking the voltage ratios of the first sub-pixel and the second sub-pixel of the display panels which are subjected to the gamma debugging under the first gray scale binding point as the reference, and therefore the subsequent display panel is endowed with a voltage initial value at the first gray scale binding point more accurately.

In some optional embodiments, as shown in fig. 7 before step 142, or as shown in fig. 8 before step 152, the gamma debugging method provided by the embodiment of the present application may further include step 160.

Step 160, a ratio of the adjusted first voltage initial value and the adjusted second voltage initial value of the second display panel is used as a voltage ratio of the first sub-pixel and the second sub-pixel of the second display panel under the first gray scale binding.

The color coordinate of the second display panel meets the color coordinate requirement under the adjusted first voltage initial value and the adjusted second voltage initial value, so that the voltage ratio of the first sub-pixel and the second sub-pixel of the second display panel under the first gray scale binding point can be determined according to the ratio of the adjusted first voltage initial value and the adjusted second voltage initial value.

The voltage ratio of the first sub-pixel and the second sub-pixel of the second display panel at the first gray scale binding point may be the same as or different from the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel at the first gray scale binding point, which is not limited in this application.

As shown in fig. 9, the gamma debugging apparatus 800 provided in the embodiment of the present application may include a data obtaining module 801, an initial value setting module 802, and a debugging module 803.

The data obtaining module 801 is configured to obtain a voltage ratio of a first sub-pixel and a second sub-pixel of the first display panel under a first gray scale tie point and a target gray scale, where the first gray scale tie point is less than or equal to the target gray scale.

The initial value setting module 802 is configured to set a first voltage initial value and a second voltage initial value of the first sub-pixel and the second sub-pixel of the second display panel under the first gray scale binding, respectively, so that a ratio of the first voltage initial value and the second voltage initial value of the second display panel is equal to a voltage ratio.

The debugging module 803 is configured to perform gamma debugging on the second display panel under the first gray scale tie point based on the first voltage initial value and the second voltage initial value of the second display panel.

In some optional embodiments, the initial value setting module 802 is further configured to:

and setting a third voltage initial value of a third sub-pixel of the second display panel under the first gray scale binding point.

Correspondingly, the debugging module 803 is specifically configured to:

In some optional embodiments, the data acquisition module 801 is further configured to:

and acquiring the voltage ratio of the first sub-pixel and the second sub-pixel of the N-1 th display panel under the first gray scale binding point, wherein N is not less than 3 and is an integer.

The initial value setting module 802 is further configured to: and respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of the Nth display panel under the first gray scale binding point, so that the ratio of the first voltage initial value to the second voltage initial value of the Nth display panel is equal to the voltage ratio of the first sub-pixel and the second sub-pixel of the N-1 th display panel under the first gray scale binding point.

The debugging module 803 is also used for: and performing gamma debugging on the Nth display panel under the first gray scale binding point based on the first voltage initial value and the second voltage initial value of the Nth display panel.

and acquiring a voltage ratio mean value determined by voltage ratios of the first sub-pixel and the second sub-pixel of the plurality of display panels under the first gray scale binding.

The initial value setting module 802 is further configured to: and respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of the Nth display panel under the first gray scale binding point, so that the ratio of the first voltage initial value to the second voltage initial value of the Nth display panel is equal to the voltage ratio mean value, wherein N is more than or equal to 3 and is an integer.

In some optional embodiments, the debugging module 803 is further configured to:

and if the target color coordinate requirement is not met, keeping the adjusted third voltage empirical value, and readjusting the adjusted first voltage empirical value and the adjusted second voltage empirical value to ensure that the ratio of the readjusted adjusted first voltage empirical value to the readjusted adjusted second voltage empirical value is equal to the voltage ratio.

Correspondingly, the initial value setting module 802 is specifically configured to:

and taking the adjusted third voltage empirical value as a third voltage initial value.

The gamma debugging device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.

The gamma debugging device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The gamma debugging device provided in the embodiment of the application can implement the gamma debugging method shown in fig. 2 and fig. 4 to fig. 8 and the processes in the embodiment, and is not described here again to avoid repetition.

Fig. 10 shows a hardware structure diagram of a gamma debugging device provided in an embodiment of the present application.

The gamma debugging device may comprise a processor 901 and a memory 902 in which computer program instructions are stored.

Specifically, the processor 901 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing the embodiments of the present invention.

Memory 902 may include mass storage for data or instructions. By way of example, and not limitation, memory 902 may include a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, tape, or Universal Serial Bus (USB) Drive or a combination of two or more of these. Memory 902 may include removable or non-removable (or fixed) media, where appropriate. The memory 902 may be internal or external to the integrated gateway disaster recovery device, where appropriate. In a particular embodiment, the memory 902 is a non-volatile solid-state memory. In a particular embodiment, the memory 902 includes Read Only Memory (ROM). Where appropriate, the ROM may be mask-programmed ROM, Programmable ROM (PROM), Erasable PROM (EPROM), Electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory or a combination of two or more of these.

The processor 901 reads and executes the computer program instructions stored in the memory 902 to implement any one of the gamma debugging methods in the above embodiments.

In one example, the gamma debugging device may also include a communication interface 903 and a bus 910. As shown in fig. 10, the processor 901, the memory 902, and the communication interface 903 are connected via a bus 910 to complete communication with each other.

The communication interface 903 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.

Bus 910 includes hardware, software, or both to couple the components of the compensation voltage determination device to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. Bus 910 can include one or more buses, where appropriate. Although specific buses have been described and shown in the embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.

The gamma debugging device can execute the gamma debugging method in the embodiment of the application, thereby realizing the gamma debugging method and the gamma debugging device described in conjunction with fig. 2 and fig. 9.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the gamma debugging method in the foregoing embodiment can be implemented, and the same technical effect can be achieved. The computer-readable storage medium may include a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like, which is not limited herein.

The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. "computer-readable media" may include any medium that can store or transfer information. Examples of computer readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.

It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.

Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware for performing the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In accordance with the embodiments of the present application as described above, these embodiments are not exhaustive and do not limit the application to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and its practical application, to thereby enable others skilled in the art to best utilize the application and its various modifications as are suited to the particular use contemplated. The application is limited only by the claims and their full scope and equivalents.

Claims

1. A method of gamma debugging, the method comprising:

acquiring a voltage ratio and a target gray-scale value of a first sub-pixel and a second sub-pixel of a first display panel under a first gray-scale binding point, wherein the first gray-scale binding point is less than or equal to the target gray-scale value;

respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of a second display panel under the first gray scale binding point, so that the ratio of the first voltage initial value to the second voltage initial value of the second display panel is equal to the voltage ratio of the first display panel;

and performing gamma debugging on the second display panel under the first gray scale binding point based on the first voltage initial value and the second voltage initial value of the second display panel.

2. The gamma debugging method according to claim 1, wherein, prior to the gamma debugging of the second display panel under the first gray scale tie based on a first voltage initial value and a second voltage initial value of the second display panel, the method further comprises:

correspondingly, the performing gamma debugging on the second display panel under the first gray scale binding based on the first voltage initial value and the second voltage initial value of the second display panel includes:

judging whether the brightness measurement values of the second display panel under the first voltage initial value, the second voltage initial value and the third voltage initial value of the second display panel meet the target brightness requirement of the second display panel under the first gray scale binding point;

if the target brightness requirement is not met, adjusting a first voltage initial value, a second voltage initial value and a third voltage initial value of the second display panel until the brightness measured values of the second display panel under the adjusted first voltage initial value, the adjusted second voltage initial value and the adjusted third voltage initial value meet the target brightness requirement.

3. The gamma debugging method of claim 2, further comprising:

acquiring a voltage ratio of a first sub-pixel and a second sub-pixel of an N-1 th display panel under the first gray scale binding point, wherein N is not less than 3 and is an integer;

respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of an Nth display panel under the first gray scale binding point, so that the ratio of the first voltage initial value to the second voltage initial value of the Nth display panel is equal to the voltage ratio of the first sub-pixel and the second sub-pixel of the N-1 th display panel under the first gray scale binding point;

4. The gamma debugging method of claim 2, further comprising:

determining a voltage ratio mean value of first sub-pixels and second sub-pixels of the plurality of display panels at the first gray scale binding point based on each voltage ratio of the first sub-pixels and the second sub-pixels of the plurality of display panels at the first gray scale binding point;

respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of an Nth display panel under the first gray scale binding point, so that the ratio of the first voltage initial value to the second voltage initial value of the Nth display panel is equal to the voltage ratio mean value, wherein N is more than or equal to 3 and is an integer;

5. The gamma debugging method of claim 3 or 4, wherein before the setting the first and second voltage initial values of the first and second sub-pixels of the Nth display panel under the first gray scale binding respectively, the method further comprises:

and taking the ratio of the adjusted first voltage initial value and the adjusted second voltage initial value of the second display panel as the voltage ratio of the first sub-pixel and the second sub-pixel of the second display panel under the first gray scale binding.

6. The gamma debugging method of claim 2, wherein before the setting the first and second initial voltage values of the first and second sub-pixels of the second display panel at the first gray scale tie, respectively, the method further comprises:

respectively setting a first voltage empirical value, a second voltage empirical value and a third voltage empirical value of a first sub-pixel, a second sub-pixel and a third sub-pixel of the second display panel under the first gray scale binding;

if the target brightness requirement is not met, adjusting the first voltage empirical value, the second voltage empirical value and the third voltage empirical value until the brightness measurement values of the second display panel under the adjusted first voltage empirical value, the adjusted second voltage empirical value and the adjusted third voltage empirical value meet the target brightness requirement;

if the target color coordinate requirement is not met, maintaining the adjusted third voltage empirical value, and readjusting the adjusted first voltage empirical value and the adjusted second voltage empirical value to make the ratio of the readjusted adjusted first voltage empirical value to the readjusted adjusted second voltage empirical value equal to the voltage ratio;

correspondingly, the setting of the first voltage initial value and the second voltage initial value of the first sub-pixel and the second sub-pixel of the second display panel under the first gray scale binding respectively includes:

7. The gamma debugging method of claim 6, wherein the setting a third initial voltage value of a third sub-pixel of a second display panel under the first gray scale tie point comprises:

8. The gamma debugging method of claim 1, wherein before the obtaining the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel at the first gray scale binding and the target gray scale value, the method further comprises:

performing gamma debugging on the first display panel under a plurality of gray scale binding points, and determining the voltage ratio of a first sub-pixel and a second sub-pixel of the first display panel under each gray scale binding point;

and selecting one gray scale binding point from the plurality of gray scale binding points as the target gray scale value, so that the voltage ratio corresponding to the gray scale binding point larger than the target gray scale value is larger than 1, and the voltage ratio corresponding to the gray scale binding point smaller than or equal to the target gray scale value is smaller than or equal to 1.

9. The gamma debugging method of claim 8, wherein after the determining the voltage ratio of the first sub-pixel to the second sub-pixel of the first display panel at each of the gray scale bindings, the method further comprises:

correspondingly, the obtaining of the voltage ratio of the first sub-pixel and the second sub-pixel of the first display panel under the first gray scale tie point includes:

10. A gamma debugging apparatus, characterized in that the apparatus comprises:

the data acquisition module is used for acquiring a voltage ratio of a first sub-pixel and a second sub-pixel of a first display panel under a first gray scale binding point and a target gray scale, wherein the first gray scale binding point is less than or equal to the target gray scale;

the initial value setting module is used for respectively setting a first voltage initial value and a second voltage initial value of a first sub-pixel and a second sub-pixel of a second display panel under the first gray scale binding point, so that the ratio of the first voltage initial value and the second voltage initial value of the second display panel is equal to the voltage ratio;

11. A gamma debugging device comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the gamma debugging method of any one of claims 1 to 9.