CN110136631B - Method for adjusting display picture of display device - Google Patents
Method for adjusting display picture of display device Download PDFInfo
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- CN110136631B CN110136631B CN201910557239.1A CN201910557239A CN110136631B CN 110136631 B CN110136631 B CN 110136631B CN 201910557239 A CN201910557239 A CN 201910557239A CN 110136631 B CN110136631 B CN 110136631B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2003—Display of colours
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
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Abstract
The invention provides a method for adjusting a display picture of a display device. The method for adjusting the display picture of the display device obtains the color abnormal area in the display picture of the display device, obtains the actual gray scale range corresponding to the three colors of red, green and blue in the color abnormal area, judges the abnormal color of the color abnormal area, obtains the adjusted gray scale range according to the actual gray scale range corresponding to the abnormal color, and then adjusts the brightness of the gray scale in the adjusted gray scale range corresponding to the display device, so as to eliminate the color abnormal area in the display picture and improve the display quality of the display device.
Description
Technical Field
The invention relates to the technical field of display, in particular to a method for adjusting a display picture of a display device.
Background
In the field of Display technology, flat panel Display devices such as Liquid Crystal Display (LCD) devices and Organic Light Emitting Diode (OLED) Display devices have gradually replaced CRT (Cathode Ray Tube) Display devices. The liquid crystal display device has many advantages of thin body, power saving, no radiation, etc., and is widely used.
Most of the existing liquid crystal display devices in the market are backlight liquid crystal display devices, which include a liquid crystal display panel and a backlight module (backlight module). Generally, a Liquid Crystal display panel includes a Color Filter (CF) substrate, a Thin Film Transistor (TFT) array substrate, a Liquid Crystal (LC) sandwiched between the Color Filter substrate and the TFT array substrate, and a Sealant frame (Sealant). The liquid crystal display panel has the working principle that liquid crystal molecules are placed in two parallel glass substrates, a plurality of vertical and horizontal fine wires are arranged between the two glass substrates, and the liquid crystal molecules are controlled to change directions by electrifying or not, so that light rays of the backlight module are refracted out to generate pictures.
OLEDs can be classified into two broad categories, namely, direct addressing and thin film transistor Matrix addressing, namely, Passive Matrix OLEDs (PMOLEDs) and Active Matrix OLEDs (AMOLEDs) according to driving methods. The AMOLED has pixels arranged in an array, belongs to an active display type, has high luminous efficiency, and is generally used as a large-sized display device with high definition. OLED devices typically include: the electron injection device comprises a substrate, an anode arranged on the substrate, a hole injection layer arranged on the anode, a hole transport layer arranged on the hole injection layer, a luminescent layer arranged on the hole transport layer, an electron transport layer arranged on the luminescent layer, an electron injection layer arranged on the electron transport layer and a cathode arranged on the electron injection layer. The light emitting principle of the OLED device is that a semiconductor material and an organic light emitting material emit light under the drive of an electric field through carrier injection and recombination. Specifically, an Indium Tin Oxide (ITO) electrode and a metal electrode are generally used as an anode and a cathode of the device, respectively, and under a certain voltage, electrons and holes are injected into an electron transport layer and a hole transport layer from the cathode and the anode, respectively, and the electrons and the holes migrate to a light emitting layer through the electron transport layer and the hole transport layer, respectively, and meet in the light emitting layer to form excitons and excite light emitting molecules, which emit visible light through radiative relaxation.
In the conventional display device, when some pictures are displayed, areas with abnormal colors, such as blue abnormal areas, appear in the pictures, so that the display quality is reduced, and a method for adjusting the display pictures of the display device is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a method for adjusting a display picture of a display device, which can improve the display quality of the display device.
In order to achieve the above object, the present invention provides a method for adjusting a display screen of a display device, comprising the steps of:
step S1, providing a display device;
step S2, the display device displays the picture and acquires the color abnormal area in the display picture;
s3, acquiring actual gray scale ranges corresponding to the three colors of red, green and blue in the color abnormal area;
step S4, judging the abnormal color of the color abnormal area; acquiring an adjustment gray scale range according to the actual gray scale range corresponding to the abnormal color;
step S5, adjusting the brightness of the gray scale in the corresponding gray scale adjustment range of the display device to eliminate the color abnormal area in the display image.
In step S2, the specific process of acquiring the color abnormal area in the display screen is as follows: and comparing the display picture with a target picture to obtain a color abnormal area in the display picture, wherein the color difference or the brightness difference between the color abnormal area in the display picture and a corresponding reference area in the target picture exceeds a preset deviation range.
In step S4, if the number of the abnormal color is one, the actual gray scale range corresponding to the abnormal color is used as the adjustment gray scale range; if the number of the abnormal colors is multiple, the actual gray scale range corresponding to the abnormal color with the largest actual gray scale range in the multiple abnormal colors is used as the adjustment gray scale range.
The display device stores a plurality of white balance parameter sets, each white balance parameter set corresponds to a gray scale, each white balance parameter set comprises three white balance parameters, and the three white balance parameters respectively correspond to red, green and blue.
The step S5 specifically includes: and adjusting the white balance parameters corresponding to the selected colors in the white balance parameter sets corresponding to the gray scales in the gray scale adjusting range so as to control the driving voltage corresponding to the gray scales in the gray scale adjusting range, and thus adjusting the brightness of the gray scales in the gray scale adjusting range corresponding to the display device so as to eliminate the color abnormal area in the display picture.
In step S5, increasing the driving voltage corresponding to the gray scale within the adjusted gray scale range by increasing the white balance parameter corresponding to the selected color in the set of white balance parameters corresponding to the gray scale within the adjusted gray scale range, thereby increasing the brightness of the gray scale within the adjusted gray scale range corresponding to the display device; the white balance parameters corresponding to the selected colors in the white balance parameter sets corresponding to the gray scales in the adjusted gray scale range are reduced, so that the driving voltage corresponding to the gray scales in the adjusted gray scale range is reduced, and the brightness of the gray scales in the adjusted gray scale range corresponding to the display device is reduced.
The step S5 specifically includes: and adjusting white balance parameters corresponding to red, green and blue in the white balance parameter group corresponding to the gray scale in the gray scale adjusting range so as to control the driving voltage corresponding to the gray scale in the gray scale adjusting range, and thus adjusting the brightness of the gray scale in the gray scale adjusting range corresponding to the display device so as to eliminate the color abnormal area in the display picture.
In step S5, increasing the driving voltage corresponding to the gray scale within the adjusted gray scale range by increasing the white balance parameters corresponding to red, green and blue in the white balance parameter set corresponding to the gray scale within the adjusted gray scale range, thereby increasing the brightness of the gray scale within the adjusted gray scale range corresponding to the display device; the white balance parameters corresponding to red, green and blue in the white balance parameter group corresponding to the gray scale in the adjusted gray scale range are all reduced, so that the driving voltage corresponding to the gray scale in the adjusted gray scale range is reduced, and the brightness of the gray scale in the corresponding adjusted gray scale range of the display device is reduced.
The display device stores a plurality of corresponding binding point gray scales with adjustable driving voltages;
the step S5 specifically includes: and adjusting the driving voltage corresponding to two binding point gray scales adjacent to the adjustment gray scale range so as to control the driving voltage corresponding to the gray scale within the adjustment gray scale range, and thus adjusting the brightness of the gray scale within the corresponding adjustment gray scale range of the display device so as to eliminate the color abnormal area in the display picture.
In the step S5, the driving voltages corresponding to the two binding point gray scales adjacent to the adjustment gray scale range are increased, so as to increase the driving voltages corresponding to the gray scales within the adjustment gray scale range, thereby increasing the brightness of the gray scales within the adjustment gray scale range corresponding to the display device; the binding voltage corresponding to the two binding gray scales adjacent to the adjustment gray scale range is reduced, so that the driving voltage corresponding to the gray scale within the adjustment gray scale range is reduced, and the brightness of the gray scale within the corresponding adjustment gray scale range of the display device is reduced.
The invention has the beneficial effects that: the method for adjusting the display picture of the display device obtains the color abnormal area in the display picture of the display device, obtains the actual gray scale range corresponding to the three colors of red, green and blue in the color abnormal area, judges the abnormal color of the color abnormal area, obtains the adjusted gray scale range according to the actual gray scale range corresponding to the abnormal color, and then adjusts the brightness of the gray scale in the adjusted gray scale range corresponding to the display device, so as to eliminate the color abnormal area in the display picture and improve the display quality of the display device.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
FIG. 1 is a flowchart illustrating a method for adjusting a display screen of a display device according to the present invention;
FIG. 2 is a graph illustrating a relationship between a gray scale and a gamma value of a display device in the method for adjusting a display frame of the display device according to the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 1, the present invention provides a method for adjusting a display frame of a display device, including the following steps:
and step S1, providing a display device.
Specifically, the display device stores a plurality of white balance parameter sets, each white balance parameter set corresponds to a gray scale, each white balance parameter set comprises three white balance parameters, and the three white balance parameters respectively correspond to red, green and blue.
Specifically, the display device further stores a plurality of corresponding binding gray scales with adjustable driving voltages.
In step S2, the display device displays a screen to acquire a color-abnormal region on the display screen.
Specifically, in step S2, the specific process of acquiring the color abnormal region in the display screen is as follows: and comparing the display picture with a target picture to obtain a color abnormal area in the display picture, wherein the color difference or the brightness difference between the color abnormal area in the display picture and a corresponding reference area in the target picture exceeds a preset deviation range.
And step S3, acquiring the actual gray scale range corresponding to the three colors of red, green and blue in the color abnormal region.
Step S4, the abnormal color of the color abnormal region is determined. And obtaining an adjustment gray scale range according to the actual gray scale range corresponding to the abnormal color.
Specifically, in step S4, if the number of the abnormal color is one, the actual gray scale range corresponding to the one abnormal color is used as the adjustment gray scale range. If the number of the abnormal colors is multiple, the actual gray scale range corresponding to the abnormal color with the largest actual gray scale range in the multiple abnormal colors is used as the adjustment gray scale range.
Step S5, adjusting the brightness of the gray scale in the corresponding gray scale adjustment range of the display device to eliminate the color abnormal area in the display image.
Specifically, in the first embodiment of the present invention, in the step S5, the white balance parameter corresponding to the abnormal color is adjusted to eliminate the color abnormal region, and the step S5 specifically is: and adjusting the white balance parameters corresponding to the selected colors in the white balance parameter sets corresponding to the gray scales in the gray scale adjusting range so as to control the driving voltage corresponding to the gray scales in the gray scale adjusting range, and thus adjusting the brightness of the gray scales in the gray scale adjusting range corresponding to the display device so as to eliminate the color abnormal area in the display picture. The method can eliminate the color abnormal area of the display picture, but the white balance parameters corresponding to the red, green and blue colors are not adjusted simultaneously, so that the color cast risk is easily caused.
Further, in the first embodiment of the present invention, in the step S5, the white balance parameter corresponding to the selected color in the set of white balance parameters corresponding to the gray scale within the adjusted gray scale range is increased, so as to increase the driving voltage corresponding to the gray scale within the adjusted gray scale range, thereby increasing the brightness of the gray scale within the adjusted gray scale range corresponding to the display device; the white balance parameters corresponding to the selected colors in the white balance parameter sets corresponding to the gray scales in the adjusted gray scale range are reduced, so that the driving voltage corresponding to the gray scales in the adjusted gray scale range is reduced, and the brightness of the gray scales in the adjusted gray scale range corresponding to the display device is reduced.
Specifically, in order to avoid the color cast risk, in the second embodiment of the present invention, in the step S5, the white balance parameters of the three colors of red, green and blue are adjusted simultaneously to eliminate the color abnormal region, and the step S5 specifically is: and adjusting white balance parameters corresponding to red, green and blue in the white balance parameter group corresponding to the gray scale in the gray scale adjusting range so as to control the driving voltage corresponding to the gray scale in the gray scale adjusting range, and thus adjusting the brightness of the gray scale in the gray scale adjusting range corresponding to the display device so as to eliminate the color abnormal area in the display picture.
Further, in the second embodiment of the present invention, in the step S5, the white balance parameters corresponding to red, green and blue are all increased in the white balance parameter set corresponding to the gray scale within the adjusted gray scale range, so as to increase the driving voltage corresponding to the gray scale within the adjusted gray scale range, thereby increasing the brightness of the gray scale within the adjusted gray scale range corresponding to the display device; the white balance parameters corresponding to red, green and blue in the white balance parameter group corresponding to the gray scale in the adjusted gray scale range are all reduced, so that the driving voltage corresponding to the gray scale in the adjusted gray scale range is reduced, and the brightness of the gray scale in the corresponding adjusted gray scale range of the display device is reduced.
Specifically, in order to avoid the color cast risk, in the third embodiment of the present invention, in the step S5, the driving voltage of the gamma gray scale adjacent to the abnormal color corresponding adjustment gray scale range is adjusted to eliminate the color abnormal region, and the step S5 specifically includes: and adjusting the driving voltage corresponding to two binding point gray scales adjacent to the adjustment gray scale range so as to control the driving voltage corresponding to the gray scale within the adjustment gray scale range, and thus adjusting the brightness of the gray scale within the corresponding adjustment gray scale range of the display device so as to eliminate the color abnormal area in the display picture.
Further, in the third embodiment of the present invention, in the step S5, the driving voltages corresponding to the two binding gray scales adjacent to the adjustment gray scale range are increased to increase the driving voltages corresponding to the gray scales within the adjustment gray scale range, so as to increase the brightness of the gray scales within the adjustment gray scale range corresponding to the display device; the driving voltage corresponding to the two binding point gray scales adjacent to the adjustment gray scale range is reduced, so that the driving voltage corresponding to the gray scale within the adjustment gray scale range is reduced, and the brightness of the gray scale within the corresponding adjustment gray scale range of the display device is reduced.
It should be noted that, the method for adjusting the display frame of the display device of the present invention obtains the abnormal color region in the display frame of the display device, obtains the actual gray scale range corresponding to the three colors of red, green and blue in the abnormal color region, determines the abnormal color of the abnormal color region, obtains the adjusted gray scale range according to the actual gray scale range corresponding to the abnormal color, and then adjusts the brightness of the gray scale in the adjusted gray scale range corresponding to the display device by adjusting the white balance parameter of the abnormal color, or by adjusting the white balance parameter of the three colors of red, green and blue, or by adjusting the driving voltage of the gamma gray scale adjacent to the adjusted gray scale range corresponding to the abnormal color, so as to eliminate the abnormal color region in the display frame, meanwhile, please refer to fig. 2, although the corresponding gamma value of the display device at the low gray scale before performing step S5 is slightly higher than the corresponding gamma value of the display device at the low gray scale after performing step S5, however, the overall gamma value is not changed much, and the gamma value of the display device is about 2.21 before the step S5 is performed, and the gamma value of the display device is about 2.22 after the step S5 is performed, which does not affect the display quality.
In summary, the method for adjusting the display frame of the display device of the present invention obtains the color abnormal region in the display frame of the display device, obtains the actual gray scale range corresponding to the three colors of red, green and blue in the color abnormal region, determines the abnormal color of the color abnormal region, obtains the adjusted gray scale range according to the actual gray scale range corresponding to the abnormal color, and then adjusts the brightness of the gray scale in the adjusted gray scale range corresponding to the display device, so as to eliminate the color abnormal region in the display frame, thereby improving the display quality of the display device.
As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.
Claims (9)
1. A method for adjusting a display picture of a display device is characterized by comprising the following steps:
step S1, providing a display device;
step S2, the display device displays the picture and acquires the color abnormal area in the display picture;
s3, acquiring actual gray scale ranges corresponding to the three colors of red, green and blue in the color abnormal area;
step S4, judging the abnormal color of the color abnormal area; acquiring an adjustment gray scale range according to the actual gray scale range corresponding to the abnormal color;
step S5, adjusting the brightness of the gray scale in the corresponding gray scale adjustment range of the display device to eliminate the color abnormal area in the display picture;
in step S4, if the number of the abnormal color is one, the actual gray scale range corresponding to the abnormal color is used as the adjustment gray scale range; if the number of the abnormal colors is multiple, the actual gray scale range corresponding to the abnormal color with the largest actual gray scale range in the multiple abnormal colors is used as the adjustment gray scale range.
2. The method for adjusting the display screen of the display device according to claim 1, wherein in the step S2, the specific process of acquiring the color abnormal region in the display screen is as follows: and comparing the display picture with a target picture to obtain a color abnormal area in the display picture, wherein the color difference or the brightness difference between the color abnormal area in the display picture and a corresponding reference area in the target picture exceeds a preset deviation range.
3. The method according to claim 1, wherein the display device stores a plurality of white balance parameter sets, each white balance parameter set corresponding to a gray level, each white balance parameter set comprising three white balance parameters corresponding to red, green and blue.
4. The method for adjusting the display screen of the display device according to claim 3, wherein the step S5 is specifically as follows: and adjusting the white balance parameters corresponding to the selected colors in the white balance parameter sets corresponding to the gray scales in the gray scale adjusting range so as to control the driving voltage corresponding to the gray scales in the gray scale adjusting range, and thus adjusting the brightness of the gray scales in the gray scale adjusting range corresponding to the display device so as to eliminate the color abnormal area in the display picture.
5. The method for adjusting the display frame of the display device according to claim 4, wherein in step S5, the driving voltage corresponding to the gray scale within the adjusted gray scale range is increased by increasing the white balance parameter corresponding to the selected color in the set of white balance parameters corresponding to the gray scale within the adjusted gray scale range, thereby increasing the brightness of the gray scale within the adjusted gray scale range corresponding to the display device; the white balance parameters corresponding to the selected colors in the white balance parameter sets corresponding to the gray scales in the adjusted gray scale range are reduced, so that the driving voltage corresponding to the gray scales in the adjusted gray scale range is reduced, and the brightness of the gray scales in the adjusted gray scale range corresponding to the display device is reduced.
6. The method for adjusting the display screen of the display device according to claim 3, wherein the step S5 is specifically as follows: and adjusting white balance parameters corresponding to red, green and blue in the white balance parameter group corresponding to the gray scale in the gray scale adjusting range so as to control the driving voltage corresponding to the gray scale in the gray scale adjusting range, and thus adjusting the brightness of the gray scale in the gray scale adjusting range corresponding to the display device so as to eliminate the color abnormal area in the display picture.
7. The method for adjusting the display frame of the display device according to claim 6, wherein in step S5, the driving voltage corresponding to the gray scale within the adjusted gray scale range is increased by increasing the white balance parameters corresponding to red, green and blue in the set of white balance parameters corresponding to the gray scale within the adjusted gray scale range, thereby increasing the brightness of the gray scale within the adjusted gray scale range; the white balance parameters corresponding to red, green and blue in the white balance parameter group corresponding to the gray scale in the adjusted gray scale range are all reduced, so that the driving voltage corresponding to the gray scale in the adjusted gray scale range is reduced, and the brightness of the gray scale in the corresponding adjusted gray scale range of the display device is reduced.
8. The method for adjusting the display frame of the display device according to claim 1, wherein the display device stores a plurality of corresponding binding gray scales with adjustable driving voltages;
the step S5 specifically includes: and adjusting the driving voltage corresponding to two binding point gray scales adjacent to the adjustment gray scale range so as to control the driving voltage corresponding to the gray scale within the adjustment gray scale range, and thus adjusting the brightness of the gray scale within the corresponding adjustment gray scale range of the display device so as to eliminate the color abnormal area in the display picture.
9. The method for adjusting the display frame of the display device according to claim 8, wherein in step S5, the driving voltages corresponding to the gray scales within the adjusted gray scale range are increased by increasing the driving voltages corresponding to the two binding gray scales adjacent to the adjusted gray scale range, so as to increase the brightness of the gray scales within the adjusted gray scale range corresponding to the display device; the driving voltage corresponding to the two binding point gray scales adjacent to the adjustment gray scale range is reduced, so that the driving voltage corresponding to the gray scale within the adjustment gray scale range is reduced, and the brightness of the gray scale within the corresponding adjustment gray scale range of the display device is reduced.
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| CN111968590B (en) * | 2020-08-12 | 2021-10-08 | Tcl华星光电技术有限公司 | Picture display adjusting method and device, storage medium and display equipment |
| US11114051B1 (en) | 2020-08-12 | 2021-09-07 | Tcl China Star Optoelectronics Technology Co., Ltd. | Method, storage medium and display device for adjusting a displayed image |
| CN112992036B (en) * | 2021-02-26 | 2022-05-31 | 北海惠科光电技术有限公司 | Display panel driving method and device and display equipment |
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