CN109493830B - Adjusting method and adjusting system of display panel and display device - Google Patents
Adjusting method and adjusting system of display panel and display device Download PDFInfo
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Abstract
The application is applicable to the technical field of display, and provides a display panel adjusting method, a display panel adjusting system and a display device, wherein the adjusting method comprises the following steps: acquiring an image displayed by the display panel under the drive of a preset level; acquiring an actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value; acquiring a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value; acquiring the level deviation of the preset level and the standard level; and adjusting the actual color coordinate value according to the level deviation to realize color temperature adjustment of the picture, improve the picture display effect, prolong the service life of the display device and improve the picture quality.
Description
Technical Field
The present application belongs to the field of display technologies, and in particular, to an adjusting method, an adjusting system, and a display device for a display panel.
Background
With the continuous development of science and technology, various display devices are developed, which brings great convenience to the production and life of people. At present, a display sets a corresponding image color temperature standard for a display panel according to the habit of human eyes, and performs color temperature adjustment before products leave a factory so as to achieve a set color temperature value.
However, with the long-term use of the display, due to some characteristics of the display panel, a certain color attenuation occurs, so that the color temperature deviates from the set color temperature standard, and a color cast phenomenon occurs, so that the display effect of the display device is reduced or abnormal.
Disclosure of Invention
In view of this, embodiments of the present application provide a method and a system for adjusting a display panel, and a display device, so as to solve the problem that, along with long-term use of a display, due to some characteristics of the display panel, a certain color attenuation occurs, so that the color attenuation deviates from a set color temperature standard, a color cast phenomenon occurs, and a display effect of the display device is reduced or abnormal.
The embodiment of the application provides a method for adjusting a display panel, wherein the method comprises the following steps:
acquiring an image displayed by the display panel under the drive of a preset level;
acquiring an actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value;
acquiring a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value;
acquiring the level deviation of the preset level and the standard level;
and adjusting the actual color coordinate value according to the level deviation.
In one embodiment, before obtaining the actual color coordinate value corresponding to the preset level according to the corresponding relationship between the gray scale and the actual color coordinate value, the method includes:
after the display panel leaves a factory, acquiring a plurality of images with different gray scale values displayed by the display panel under a plurality of different preset levels;
analyzing the images with different gray scale values to obtain actual color coordinate values of the images displayed by the display panel under different preset levels;
and establishing a corresponding relation between the gray scale and the actual color coordinate value according to the different gray scale values and the actual color coordinate value of the image displayed by the display panel at the different preset levels.
In one embodiment, a correspondence curve of gray scale and actual color coordinate values is drawn according to the correspondence of gray scale and actual color coordinate values.
In one embodiment, the analyzing the plurality of images with different gray scale values to obtain the actual color coordinate values of the images displayed by the display panel at a plurality of different preset levels includes:
respectively carrying out digital processing on the images with different gray scale values, analyzing actual color coordinate values corresponding to specific primary colors in the images with the gray scale values, and obtaining actual color coordinate values of the images displayed by the display panel under different preset levels; wherein the specific primary color comprises red or blue.
In one embodiment, obtaining the actual color coordinate value corresponding to the preset level according to the corresponding relationship between the gray scale and the actual color coordinate value includes:
acquiring a gray scale corresponding to the preset level;
acquiring an actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value and the gray scale corresponding to the preset level;
obtaining a standard level corresponding to the actual color coordinate value when the standard color coordinate value is the actual color coordinate value according to the corresponding relationship between the gray scale and the standard color coordinate value, including:
acquiring a corresponding gray scale when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value;
and acquiring a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding gray scale when the standard color coordinate value is the actual color coordinate value.
In one embodiment, before obtaining the standard level corresponding to the actual color coordinate value when the standard color coordinate value is the actual color coordinate value according to the corresponding relationship between the gray scale and the standard color coordinate value, the method includes:
before the display panel leaves a factory, acquiring a plurality of images with different gray scale values displayed by the display panel under a plurality of different standard levels;
analyzing the images with different gray scale values to obtain standard color coordinate values of the images displayed by the display panel under different standard levels;
and establishing a corresponding relation between the gray scale and the standard color coordinate value according to the plurality of different gray scale values and the standard color coordinate value of the image displayed by the display panel under the plurality of different standard levels.
In one embodiment, a correspondence curve of gray scale and standard color coordinate values is drawn according to the correspondence of gray scale and standard color coordinate values.
In one embodiment, the analyzing the plurality of images with different gray scale values to obtain the standard color coordinate values of the images displayed by the display panel at a plurality of different standard levels includes:
respectively carrying out digital processing on the images with different gray scale values, analyzing a standard color coordinate value corresponding to a specific primary color in each image with the gray scale value, and obtaining the standard color coordinate value of the image displayed by the display panel under a plurality of different standard levels; wherein the specific primary color comprises red or blue.
Yet another embodiment of the present application provides an adjustment system of a display panel, wherein the adjustment system includes:
the image acquisition unit is used for acquiring an image displayed by the display panel under the drive of a preset level;
the first data acquisition unit is set to acquire an actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value;
the second data acquisition unit is set to acquire a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value;
the data processing unit is arranged to acquire the level deviation of the preset level and the standard level;
an adjusting unit configured to adjust the actual color coordinate value according to the level deviation.
Yet another embodiment of the present application provides a display device, which includes a display panel, and further includes a processor, a memory, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the processor implements the steps of the adjusting method described above.
An embodiment of the present application also provides a computer-readable storage medium, which stores a computer program, which when executed by a processor, implements the steps of the above-mentioned adjustment method.
According to the embodiment of the application, when the display panel is driven at the preset level, the image displayed by the display panel under the drive of the preset level is acquired; acquiring an actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value; acquiring a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value; acquiring the level deviation of the preset level and the standard level; adjusting the actual color coordinate value according to the level deviation; therefore, the display device can timely finish the calibration and adjustment of color cast in an off-line state, the display panel reaches the set color temperature standard, the picture of the display device is ensured to be in a normal display state, the picture quality is improved, and the display device has strong usability and practicability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic block diagram of a signal flow of an adjusting method applied to a display device according to an embodiment of the present application;
FIG. 2 is a schematic flow chart diagram of a conditioning method provided by an embodiment of the present application;
FIG. 3 is a diagram of a picture corresponding to red in an image when driven at different levels according to an embodiment of the present application;
FIG. 4 is a diagram of a picture corresponding to blue in an image when driven at different levels according to an embodiment of the present application;
fig. 5 is a graph illustrating a relationship between a gray level value of a red image and an actual color coordinate value in an image according to an embodiment of the present disclosure;
FIG. 6 is a graph illustrating a relationship between gray scale values of blue images and actual color coordinate values in an image according to an embodiment of the present disclosure;
FIG. 7 is a graph illustrating a relationship between a red gray scale value and a standard color coordinate value in an image according to an embodiment of the present disclosure;
FIG. 8 is a graph illustrating a relationship between a blue gray scale value and a standard color coordinate value in an image according to an embodiment of the present disclosure;
FIG. 9 is a comparison of red color plots in an image provided by an embodiment of the present application;
FIG. 10 is a graph comparing blue color plots in an image according to an embodiment of the present application
FIG. 11 is a schematic block diagram of a conditioning system provided by an embodiment of the present application;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the drawings described above, are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
As shown in fig. 1, a signal flow schematic block diagram of a display device to which the adjustment method provided by an embodiment of the present application is applied is shown, and for convenience of description, only the relevant portions of the embodiment are shown.
Fig. 1 shows that the display device includes a display panel 10, an image collector 11, and a central processing unit 12; wherein, the image collector 11 obtains the image displayed by the display panel 10; the image collector 11 is connected with the central processing unit 12, the image collector 11 transmits the collected image information to the central processing unit, and the central processing unit analyzes and processes the image to obtain specific image information; and comparing the acquired image information with the stored standard image information, if the deviation exists, adjusting the driving signal of the display panel according to the deviation so as to adjust the display effect of the display panel, realize the off-line calibration and adjustment of the color temperature of the display image of the display panel, ensure the normal display picture of the display device, avoid the need of factory return correction and reduce the repair rate of the display device.
As shown in fig. 2, a flow chart of an adjusting method according to an embodiment of the present application is schematically illustrated. The adjusting method is applied to the color temperature adjustment of the picture display of the display device and is used for solving the problem of color cast of the display device after long-term use.
In one embodiment, the Display device may be any type of Display device, such as an LCD (liquid crystal Display), an OLED (Organic electroluminescent Display), a QLED (Quantum Dot Light Emitting Diodes) Display device, a curved Display device, or the like.
The adjusting method provided by the embodiment comprises the following steps:
step S201, acquiring an image displayed by the display panel under the driving of a preset level.
In one embodiment, the display device comprises a display panel, an image collector and a central processing unit, wherein the central processing unit controls and outputs a driving level to the display panel to drive the display panel to display an image; the image collector collects the display image of the display panel.
The preset level comprises driving levels corresponding to a plurality of set image gray scales, a fixed number of driving levels can be set for the same type of display device products, and different numbers of driving levels can be set according to the sizes of different products; the greater the number of drive levels set, the higher the accuracy of the acquired image information. For example, 30 sampling points are set in 256 gray levels of an image, and 30 different driving levels are correspondingly set; when a color temperature adjusting signal started by a user is received or color temperature deviation of an image displayed by a display panel is detected, sending a preset level to the display panel, driving the display panel to display, and respectively collecting images displayed corresponding to the preset level as test pictures; in order to facilitate the acquisition of the image, the preset level sending signal can be set to be 10 Hz, so that the image can be accurately acquired; the image acquisition can be directly acquired by an image collector arranged in the display device, or the image can be captured and acquired by photographing through an external photographing device, the external device can be connected with a central processing unit of the display device in a wired or wireless mode, and the external device can include but is not limited to a mobile terminal with a photographing function, such as a mobile phone or a camera.
It should be noted that, the driving level and the gray scale of the image have a specific corresponding relationship, and different driving levels drive the display panel, and the corresponding displayed image has different gray scales.
Step S202, obtaining the actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value.
In one embodiment, the actual color coordinate value corresponding to a certain gray-scale value image can be obtained by data processing or direct measurement of the image; the display panel displays an image with a certain gray scale value under the drive of the preset level, so that the corresponding relation between the preset level of the display panel and the actual color coordinate value of the displayed image can be obtained according to the corresponding relation between the gray scale and the actual color coordinate value.
The gray scale comprises any gray scale value in an image with multiple gray scale values, any gray scale value in the image with 256 gray scale values is 0-255 gray scale values, and the selection sum of different gray scale values and the selection of the gray scale values can be carried out according to the actual size of the display device.
In one embodiment, before obtaining the actual color coordinate value corresponding to the preset level according to the corresponding relationship between the gray scale and the actual color coordinate value, the method includes:
after the display panel leaves a factory, acquiring a plurality of images with different gray scale values displayed by the display panel under a plurality of different preset levels;
analyzing the images with different gray scale values to obtain actual color coordinate values of the images displayed by the display panel under different preset levels;
and establishing a corresponding relation between the gray scale and the actual color coordinate value according to the different gray scale values and the actual color coordinate value of the image displayed by the display panel at the different preset levels.
In one embodiment, the display panel displays images of different gray scale values when the display panel is driven at different driving levels. The preset level may be set and stored in the display device in advance, and the preset level may be a driving level corresponding to a gray scale value of an image; for example, 30 sampling points are set in 256 gray-scale values of an image, 30 driving levels are correspondingly set, and when a display panel is driven by a plurality of preset levels, a plurality of images which are driven and displayed by the corresponding preset levels are acquired; the display panel is driven by different levels, and the gray scale values of the image displayed by the display panel are correspondingly different. As shown in fig. 3 and 4, in the picture schematic diagrams corresponding to two primary colors of red and blue in the image respectively during different level driving, 30 sampling points are provided from a gray level value of 0 to a gray level value of 255 to respectively obtain 30 test pictures with different gray levels, where Px1 to Px30 correspond to the red test pictures with different gray levels in the image, and Py1 to Py30 correspond to the blue test pictures with different gray levels in the image.
In one embodiment, the acquired image is transmitted to a central processing unit, the central processing unit analyzes the acquired image, and extracts a characteristic value of the image, wherein the characteristic value comprises a color coordinate value of the image, and the color coordinate value of the image determines a color temperature value of the image, so that whether the color temperature of the image is deviated or not can be judged according to the analyzed color coordinate value of the image. The acquired color coordinate values include actual color coordinate values corresponding to currently acquired test pictures of different gray scales, specifically, actual color coordinate values of test pictures corresponding to specific primary colors in the images, where the specific primary colors include red, blue or green, and in this embodiment, red and blue are preferably selected.
In one embodiment, each preset level drives the display panel to generate an image corresponding to a gray scale value, each gray scale value image having a corresponding actual color coordinate value; aiming at images with different gray scale values and corresponding actual color coordinate values, establishing a corresponding relation between the gray scale values and the actual color coordinate values, wherein the corresponding relation can be stored in a document form or other forms; for example, as shown in table 1, the sampling points are stored in a table form, and 30 sampling points corresponding to gray-scale values of a red test picture in the image and actual color coordinate values corresponding to the gray-scale values are stored; table 2 shows the corresponding 30 sampling points in the gray scale values of the blue test picture in the image and the actual color coordinate values corresponding to the gray scale values. Wherein, R and B are respectively different gray scale values corresponding to the red test picture and the blue test picture, the selected sampling point is the test picture corresponding to 30 gray scale values between 0 and 255, and Xt and Yt are actual color coordinate values of the red test picture and the blue test picture corresponding to the gray scale values respectively.
TABLE 1
| |
0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
| Xt | 0.155 | 0.168 | 0.185 | 0.193 | 0.203 | 0.215 | 0.220 | 0.225 | 0.228 | 0.234 |
| |
100 | 110 | 115 | 120 | 125 | 128 | 130 | 140 | 150 | 160 |
| Xt | 0.238 | 0.245 | 0.251 | 0.257 | 0.264 | 0.269 | 0.274 | 0.278 | 0.283 | 0.286 |
| |
170 | 180 | 190 | 200 | 210 | 220 | 230 | 240 | 250 | 254 |
| Xt | 0.288 | 0.290 | 0.291 | 0.293 | 0.295 | 0.297 | 0.298 | 0.301 | 0.303 | 0.305 |
TABLE 2
| |
0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
| Yt | 0.515 | 0.503 | 0.492 | 0.476 | 0.463 | 0.443 | 0.421 | 0.405 | 0.387 | 0.360 |
| |
100 | 110 | 115 | 120 | 125 | 128 | 130 | 140 | 150 | 160 |
| Yt | 0.328 | 0.317 | 0.303 | 0.295 | 0.291 | 0.280 | 0.275 | 0.270 | 0.265 | 0.255 |
| |
170 | 180 | 190 | 200 | 210 | 220 | 230 | 240 | 250 | 254 |
| Yt | 0.248 | 0.244 | 0.234 | 0.230 | 0.227 | 0.224 | 0.218 | 0.215 | 0.207 | 0.200 |
In one embodiment, a correspondence curve of gray scale and actual color coordinate values is drawn according to the correspondence of gray scale and actual color coordinate values.
In one embodiment, a one-to-one correspondence relationship is established for a preset number of gray scale value sampling points set for a certain image and the acquired corresponding standard color coordinate values; and drawing a relation curve of relative change of the two according to the corresponding relation. According to the corresponding relationship between the gray scale and the actual color coordinate value, a corresponding relationship curve graph is generated, wherein the gray scale values R and B are used as abscissa, and the actual color coordinate value Xt and Yt are used as ordinate, the corresponding relationship curve graphs of the gray scale values of the red and blue pictures in the images shown in the figures 5 and 6 and the actual color coordinate value respectively are used, the sampling point of the gray scale value is used as the abscissa, and the actual color coordinate value is used as the ordinate.
In one embodiment, the analyzing the plurality of images with different gray scale values to obtain the actual color coordinate values of the images displayed by the display panel at a plurality of different preset levels includes:
respectively carrying out digital processing on the images with different gray scale values, analyzing actual color coordinate values corresponding to specific primary colors in the images with the gray scale values, and obtaining actual color coordinate values of the images displayed by the display panel under different preset levels; wherein the specific primary color comprises red or blue.
In an embodiment, the acquired color coordinate values include actual color coordinate values corresponding to currently acquired test pictures of different gray scales, specifically, actual color coordinate values of test pictures corresponding to specific primary colors in the image, where the specific primary colors include red, blue or green, and in this embodiment, red and blue are preferably selected.
In one embodiment, obtaining the actual color coordinate value corresponding to the preset level according to the corresponding relationship between the gray scale and the actual color coordinate value includes:
acquiring a gray scale corresponding to the preset level;
and acquiring the actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value and the gray scale corresponding to the preset level.
In one embodiment, the display panel is driven at different levels, the gray scale values of the displayed image are different, a one-to-one correspondence exists between the preset levels and the gray scales, and the gray scale values of the displayed image are determined by the magnitude of the driving level of the display panel. The images with different gray scale values correspond to the actual color coordinate values one by one; according to the two corresponding relations, the actual color coordinate value of the image corresponding to the preset level can be obtained.
The actual color coordinate value is the actual color coordinate value of an image displayed by driving the display panel at a preset level according to the collected data after the display device is shipped and used for a period of time. The preset level may be a level corresponding to a gray-scale value sampling point set in advance.
Step S203, obtaining a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding relationship between the gray scale and the standard color coordinate value.
In one embodiment, after correcting the color temperature of the display device, the standard color coordinate value corresponding to a certain gray-scale value image can be obtained by data processing or direct measurement of the image; the display panel displays an image with a certain gray scale value under the driving of the standard level, so that the corresponding standard level can be obtained when the standard color coordinate value is the same as the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value.
When the display panel generates color cast, when the actual color coordinate value of the display image is the same as the standard color coordinate value, the image with color cast is different from the image gray scale value corresponding to the standard image; and when the display panel has color cast, the corresponding images have different color coordinate values when the gray scale values of the test image and the standard image are the same.
In one embodiment, obtaining a standard level corresponding to the actual color coordinate value when the standard color coordinate value is the actual color coordinate value according to the correspondence between the gray scale and the standard color coordinate value includes:
acquiring a corresponding gray scale when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value;
and acquiring a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding gray scale when the standard color coordinate value is the actual color coordinate value.
In one embodiment, before obtaining the standard level corresponding to the actual color coordinate value when the standard color coordinate value is the actual color coordinate value according to the corresponding relationship between the gray scale and the standard color coordinate value, the method includes:
before the display panel leaves a factory, acquiring a plurality of images with different gray scale values displayed by the display panel under a plurality of different standard levels;
analyzing the images with different gray scale values to obtain standard color coordinate values of the images displayed by the display panel under different standard levels;
and establishing a corresponding relation between the gray scale and the standard color coordinate value according to the plurality of different gray scale values and the standard color coordinate value of the image displayed by the display panel under the plurality of different standard levels.
In one embodiment, the display panel displays images without gray scale values at different driving levels, the images reflect different color temperature states of the images at different gray scale values, color temperature adjustment and correction are performed on the images with different gray scale values to ensure normal display effect, and color coordinate values of the images are factors determining the color temperature effect of the images, so that after color temperature correction is performed on the images, corresponding color coordinate values of the images at different gray scale values are recorded as standard color coordinate values. The standard color coordinate value of the image can be obtained by analyzing and processing the data of the image, or the standard color coordinate value can be obtained by directly measuring the image. The selected preset number can be set according to the specific size of the display device and the debugging process during color temperature correction, the more sampling points, the higher the accuracy of the corresponding color coordinate values, for example, 30 sampling points of gray scale values can be set for 256 images of gray scale values.
In one embodiment, a correspondence curve of gray scale and standard color coordinate values is drawn according to the correspondence of gray scale and standard color coordinate values.
In one embodiment, the analyzing the plurality of images with different gray scale values to obtain the standard color coordinate values of the images displayed by the display panel at a plurality of different standard levels includes:
respectively carrying out digital processing on the images with different gray scale values, analyzing a standard color coordinate value corresponding to a specific primary color in each image with the gray scale value, and obtaining the standard color coordinate value of the image displayed by the display panel under a plurality of different standard levels; wherein the specific primary color comprises red or blue.
In one embodiment, the specific primary colors include three primary colors of red, blue, and green that may be mixed to constitute white light; when the corresponding relationship between the gray scale value and the standard color coordinate value is established, the corresponding relationship between the different gray scale values of the picture with the specific primary color and the standard color coordinate value is selected.
The corresponding relation between the measured gray scale and the coordinate value of the standard color can be stored in a document form; as shown in tables 3 and 4, R and B are different gray scale values corresponding to the red and blue test pictures, the selected sample point is a test picture corresponding to 30 gray scale values between 0 and 255, and Xs and Ys are standard color coordinate values corresponding to the gray scale values of the red standard picture and the blue standard picture, respectively.
TABLE 3
| |
0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
| Xs | 0.220 | 0.222 | 0.224 | 0.226 | 0.230 | 0.234 | 0.238 | 0.244 | 0.250 | 0.256 |
| |
100 | 110 | 115 | 120 | 125 | 128 | 130 | 140 | 150 | 160 |
| Xs | 0.263 | 0.270 | 0.274 | 0.278 | 0.282 | 0.284 | 0.286 | 0.288 | 0.290 | 0.292 |
| |
170 | 180 | 190 | 200 | 210 | 220 | 230 | 240 | 250 | 254 |
| Xs | 0.294 | 0.296 | 0.298 | 0.300 | 0.302 | 0.305 | 0.307 | 0.309 | 0.311 | 0.313 |
TABLE 4
| |
0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
| Ys | 0.530 | 0.523 | 0.512 | 0.498 | 0.482 | 0.463 | 0.442 | 0.422 | 0.400 | 0.379 |
| |
100 | 110 | 115 | 120 | 125 | 128 | 130 | 140 | 150 | 160 |
| Ys | 0.358 | 0.337 | 0.325 | 0.315 | 0.303 | 0.293 | 0.291 | 0.286 | 0.281 | 0.275 |
| |
170 | 180 | 190 | 200 | 210 | 220 | 230 | 240 | 250 | 254 |
| Ys | 0.269 | 0.265 | 0.260 | 0.255 | 0.251 | 0.248 | 0.245 | 0.242 | 0.238 | 0.236 |
In an embodiment, a relationship curve between a gray-scale value sampling point of a specific primary color picture and a standard color coordinate value is drawn according to a correspondence between gray-scale values and standard color coordinates, such as a correspondence curve between gray-scale values R and B of a red picture and a blue picture provided in an embodiment of the present application and standard color coordinate values Xs and Ys shown in fig. 7 and 8, where the gray-scale value is taken as an abscissa and the standard color coordinate value is taken as an ordinate.
Step S204, acquiring the level deviation between the preset level and the standard level.
In one embodiment, the actual color coordinate values are color coordinate values of images corresponding to different gray scale values analyzed according to a currently displayed picture of the display panel; the preset standard color coordinate values are stored in the display device in advance and correspond to different gray scale values subjected to color temperature correction. The color coordinate values determine the color temperature of the image, the same color coordinate values reflect the same color temperature, but when the display device generates color cast and needs to be adjusted, the same color coordinate values correspond to different gray scale values; the gray scale value of the image is determined by the driving level of the display panel; and comparing the analyzed current actual color coordinate value of the display panel with the standard actual color coordinate value stored in the display device, correspondingly acquiring the gray scale value deviation corresponding to the same color coordinate value, and further determining the deviation of the level for driving the display panel according to the gray scale value deviation.
In one embodiment, as shown in fig. 9 and 10, the gray scale values of the red and blue pictures are compared with the corresponding curves of the color coordinate values, and the color coordinate values determine the color temperature of the picture, and under the condition that the color temperature of the picture is not changed, the gray scale values corresponding to the same color coordinates are deviated, and the level deviation of the driving display panel is further determined according to the gray scale value deviation, wherein the level deviation is the corresponding level adjustment value of the level of the driving display panel and the gray scale value deviation.
And S205, adjusting the actual color coordinate value according to the level deviation.
In one embodiment, the driving level of the display panel is adjusted according to the level deviation, so that the image displayed by the display panel conforms to the standard color coordinate value; under the drive of the adjusted level, the adjustment of the color coordinate value of the displayed image is realized, so that the color temperature effect of the image is displayed normally.
In one embodiment, adjusting the actual color coordinate values of the image displayed by the display panel according to the level deviation includes:
adjusting a driving level corresponding to an image gray-scale value according to the level deviation;
and driving the display panel through the adjusted driving level to acquire the actual color coordinate value of the corresponding adjusted image.
In one embodiment, the actual color coordinate values of different gray-scale images displayed by the display panel are adjusted according to the level deviation corresponding to each gray-scale value of the image.
By the embodiment, a plurality of data points are collected and analyzed, and color cast calibration can be accurately and timely carried out; when the color cast appears after the display device is used for a long time, a user can start the color temperature automatic adjusting program to finish off-line automatic calibration of the color cast, the off-line automatic calibration of the color cast is not needed to be returned to a factory for correction, the repair rate is reduced, the off-line calibration of the color cast can be finished at a client, and the television picture is ensured to be in a 'new state'; the deviation of the driving level of the image corresponding to the same color coordinate value is determined through the analysis of the image, the driving level of the display panel is adjusted, the color coordinate value of the displayed image is further adjusted, the picture display effect of the display device is improved, the service life of the display device is prolonged, and the picture quality is improved.
As shown in fig. 11, an embodiment of the present application provides a regulating system 100 for a display panel, which is applied to a display device, and the driving system 100 includes:
an image obtaining unit 101 configured to obtain an image displayed by the display panel under a preset level drive;
a first data obtaining unit 102 configured to obtain an actual color coordinate value corresponding to the preset level according to a correspondence between a gray scale and the actual color coordinate value;
a second data obtaining unit 103 configured to obtain a standard level corresponding to the actual color coordinate value when the standard color coordinate value is the actual color coordinate value, according to a corresponding relationship between the gray scale and the standard color coordinate value;
a data processing unit 104 configured to obtain a level deviation of the preset level from the standard level;
an adjusting unit 105 arranged to adjust the actual color coordinate values in accordance with the level deviation.
In one embodiment, the image acquisition Unit may be a Circuit or a device having a function of acquiring an image, and may be implemented by a general purpose Integrated Circuit, such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit).
In one embodiment, the first data obtaining Unit may be a Circuit or a device with data collecting function, and may be implemented by a general-purpose Integrated Circuit, such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit).
In one embodiment, the second data obtaining Unit may be a Circuit or a device with data collecting function, and may be implemented by a general-purpose Integrated Circuit, such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit).
In one embodiment, the data Processing Unit may be a Circuit or a device with data Processing function, and may be implemented by a general purpose Integrated Circuit, such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit).
In one embodiment, the adjusting Unit may be a Circuit or a device with data adjusting function, and may be implemented by a general-purpose Integrated Circuit, such as a CPU (Central Processing Unit), or an ASIC (application specific Integrated Circuit).
In one embodiment, the Display device may be any type of Display device, such as an LCD (liquid crystal Display) Display device, an OLED (Organic electroluminescent Display) Organic electroluminescent Display device, a QLED (Quantum Dot Light emitting diodes) Quantum Dot Light emitting diode Display device, a curved Display device, or the like. The display panel is a display panel corresponding to the type of the display device.
As shown in fig. 12, an embodiment of the present application provides a display device 200, which includes a display panel 1, and further includes a processor 30, a memory 31, and a computer program 32, such as a regulation program, stored in the memory 31 and executable on the processor 30. The processor 30 implements the steps of the above-mentioned adjusting method when executing the computer program, such as steps S201 to S205 shown in fig. 2.
Illustratively, the computer program 32 may be partitioned into one or more modules/units that are stored in the memory 31 and executed by the processor 30 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 32 in the display device 200. For example, the computer program 32 may be divided into an image acquisition unit, a first data acquisition unit, a second data acquisition unit, a data processing unit, and an adjustment unit, each unit functioning specifically as follows:
the image acquisition unit is used for acquiring an image displayed by the display panel under the drive of a preset level;
the first data acquisition unit is set to acquire an actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value;
the second data acquisition unit is set to acquire a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value;
the data processing unit is arranged to acquire the level deviation of the preset level and the standard level;
an adjusting unit configured to adjust the actual color coordinate value according to the level deviation.
The display device may include, but is not limited to, a processor 30 and a memory 31. It will be understood by those skilled in the art that fig. 12 is merely an example of the display apparatus 200, and does not constitute a limitation of the display apparatus 200, and may include more or less components than those shown, or combine some components, or different components, for example, the display apparatus may further include an input-output device, a network access device, a bus, and the like.
The Processor 30 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 31 may be an internal storage unit of the display apparatus 200, such as a hard disk or a memory of the display apparatus 200. The memory 31 may also be an external storage device of the display apparatus 200, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the display apparatus 200. Further, the memory 31 may also include both an internal storage unit and an external storage device of the display apparatus 200. The memory 31 is used for storing the computer program and other programs and data required by the display device. The memory 31 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (9)
1. An adjustment method for a display panel, comprising:
acquiring an image displayed by the display panel under the drive of a preset level;
acquiring an actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value; acquiring a gray scale corresponding to the preset level; acquiring an actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value and the gray scale corresponding to the preset level;
acquiring a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value; acquiring a corresponding gray scale when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value; acquiring a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding gray scale when the standard color coordinate value is the actual color coordinate value;
acquiring the level deviation of the preset level and the standard level;
and adjusting the actual color coordinate value according to the level deviation.
2. The method as claimed in claim 1, wherein before obtaining the actual color coordinate value corresponding to the preset level according to the corresponding relationship between the gray scale and the actual color coordinate value, the method comprises:
after the display panel leaves a factory, acquiring a plurality of images with different gray scale values displayed by the display panel under a plurality of different preset levels;
analyzing the images with different gray scale values to obtain actual color coordinate values of the images displayed by the display panel under different preset levels;
and establishing a corresponding relation between the gray scale and the actual color coordinate value according to the different gray scale values and the actual color coordinate value of the image displayed by the display panel at the different preset levels.
3. The adjustment method of a display panel according to claim 2, further comprising:
and drawing a corresponding relation curve of the gray scale and the actual color coordinate value according to the corresponding relation of the gray scale and the actual color coordinate value.
4. The method as claimed in claim 2, wherein the analyzing the plurality of images with different gray scale values to obtain the actual color coordinate values of the images displayed by the display panel at a plurality of different preset levels comprises:
respectively carrying out digital processing on the images with different gray scale values, analyzing actual color coordinate values corresponding to specific primary colors in the images with the gray scale values, and obtaining actual color coordinate values of the images displayed by the display panel under different preset levels; wherein the specific primary color comprises red or blue.
5. The method for adjusting a display panel according to claim 1, wherein the step of obtaining a standard level corresponding to the actual color coordinate value before the standard color coordinate value is obtained according to the correspondence between the gray scale and the standard color coordinate value comprises:
before the display panel leaves a factory, acquiring a plurality of images with different gray scale values displayed by the display panel under a plurality of different standard levels;
analyzing the images with different gray scale values to obtain standard color coordinate values of the images displayed by the display panel under different standard levels;
and establishing a corresponding relation between the gray scale and the standard color coordinate value according to the plurality of different gray scale values and the standard color coordinate value of the image displayed by the display panel under the plurality of different standard levels.
6. The adjustment method of a display panel according to claim 5, further comprising:
and drawing a corresponding relation curve of the gray scale and the standard color coordinate value according to the corresponding relation of the gray scale and the standard color coordinate value.
7. The method for adjusting a display panel according to claim 5, wherein the analyzing the plurality of images with different gray scale values to obtain the standard color coordinate values of the images displayed by the display panel at a plurality of different standard levels comprises:
respectively carrying out digital processing on the images with different gray scale values, analyzing a standard color coordinate value corresponding to a specific primary color in each image with the gray scale value, and obtaining the standard color coordinate value of the image displayed by the display panel under a plurality of different standard levels; wherein the specific primary color comprises red or blue.
8. A system for adjusting a display panel, comprising:
the image acquisition unit is used for acquiring an image displayed by the display panel under the drive of a preset level;
the first data acquisition unit is set to acquire an actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value; acquiring a gray scale corresponding to the preset level; acquiring an actual color coordinate value corresponding to the preset level according to the corresponding relation between the gray scale and the actual color coordinate value and the gray scale corresponding to the preset level;
the second data acquisition unit is set to acquire a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value; acquiring a corresponding gray scale when the standard color coordinate value is the actual color coordinate value according to the corresponding relation between the gray scale and the standard color coordinate value; acquiring a corresponding standard level when the standard color coordinate value is the actual color coordinate value according to the corresponding gray scale when the standard color coordinate value is the actual color coordinate value;
the data processing unit is arranged to acquire the level deviation of the preset level and the standard level;
an adjusting unit configured to adjust the actual color coordinate value according to the level deviation.
9. A display device comprising a display panel, further comprising a processor, a memory and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the adjustment method according to any one of claims 1 to 7 when executing the computer program.
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| KR101861795B1 (en) * | 2011-03-24 | 2018-05-29 | 삼성디스플레이 주식회사 | Luminance Correction System for Organic Light Emitting Display Device |
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