Method and device for driving display panel, and display device

Patent metadata

Field	Value
Publication number	US-11315474-B2
Application number	US-201817041732-A
Country	US
Kind code	B2
Filing date	Dec 24, 2018
Priority date	Dec 12, 2018
Publication date	Apr 26, 2022
Grant date	Apr 26, 2022

Abstract

Disclosed are a method and device for driving display panel, and a display device. The method includes: comparing original data of current frame and original data of previous frame to obtain a first difference value, converting the first difference value into a standard difference value through standard conversion, comparing processed data of current frame corresponding to each stage of plurality of stages of color processing with processed data of previous frame, to obtain a second difference value corresponding to each stage, and comparing the standard difference value with the second difference value corresponding to each stage, then outputting processed data of current frame of one corresponding stage according to the comparison results. As such the driving chip (300) can drive the display panel according to the output data.

First claim

What is claimed is:

1. A method for driving a display panel, comprising:
receiving an original image signal, and comparing original data of a current frame of the original image signal with original data of a previous frame of the original image signal to obtain a first difference value;
color processing the original data of the current frame with a plurality of stages in sequence, and obtaining the color processed data of the current frame corresponding to each stage of the plurality of stages, and converting the first difference value into a standard difference value through a standard conversion;
judging whether the standard difference value is greater than or equal to a preset value, if yes, outputting the color processed data of the current frame corresponding to a last stage of the plurality of stages; if not, outputting the color processed data of the current frame corresponding to one stage of the plurality of stages which has smallest difference with the color processed data of the previous frame; and
driving the display panel according to the output data of the current frame.

2. The method according to claim 1 , wherein the operation of outputting the color processed data of the current frame corresponding to one stage of the plurality of stages which has smallest difference with the color processed data of the previous frame, comprises:
comparing the color processed data of the current frame corresponding to each stage of the plurality of stages with the color processed data of the previous frame, and obtaining a second difference value corresponding to each stage of the plurality of stages; and
comparing the standard difference value with the second difference value corresponding to each stage of the plurality of stages, and outputting the color processed data of the current frame corresponding to the second difference value which is less than or equal to the standard difference value.

3. The method according to claim 2 , wherein the operation of outputting the color processed data of the current frame corresponding to the second difference value which is less than or equal to the standard difference value, comprises:
outputting the color processed data of the current frame corresponding to the second difference value corresponding to the stage of the plurality of stages, when the second difference value corresponding to one stage of the plurality of stages is less than or equal to the standard difference value; and
outputting the color processed data of the current frame corresponding to the second difference value corresponding to the last stage of the plurality of stages, when the second difference values corresponding to two or more of stages of the plurality of stages are less than or equal to the standard difference.

4. The method according to claim 3 , wherein the operation of comparing the standard difference value with the second difference value corresponding to each stage of the plurality of stages, and outputting the color processed data of the current frame corresponding to the second difference value which is less than or equal to the standard difference value, further comprises:
outputting the color processed data of the previous frame, when the second difference value corresponding to each stage of the plurality of stages is greater than the standard difference value.

5. The method according to claim 2 , wherein the operation of color processing the original data of the current frame with a plurality of stages in sequence, and obtaining the color processed data of the current frame corresponding to each stage of the plurality of stages, comprises:
pigment processing, color processed data a1 of the current frame corresponding to a first stage of the plurality of stages is obtained by the pigment processing on the original data of the current frame;
digital gamma processing, color processed data a2 of the current frame corresponding to a second stage of the plurality of stages is obtained by the digital gamma processing on the original data of the current frame; and
dithering processing, color processed data a3 of the current frame corresponding to a third stage of the plurality of stages is obtained by the dithering processing on the original data of the current frame.

6. The method according to claim 5 , wherein the digital gamma processing comprises:
adjusting transmitted image data in a digital way, and editing a gamma curve of the image data to perform a non-linear hue editing on the image; and
detecting a dark part and a light part of an image signal, increasing a proportion of the dark part and the light part.

7. The method according to claim 5 , wherein the operation of comparing the color processed data of the current frame corresponding to each stage of the plurality of stages with the color processed data of the previous frame, and obtaining a second difference value corresponding to each stage of the plurality of stages, comprises:
taking the pigment processing as the first stage of the plurality of stages of the color processing, wherein the pigment processing is configured to receive and process the original data of the current frame after decoding and obtain the color processed data a1 of the current frame corresponding to the first stage of the plurality of stages, and compare the color processed data a1 of the current frame corresponding to the first stage of the plurality of stages with the color processed data b of the previous frame to obtain a difference, then record the difference as the second difference value Δ2 of the first stage of the plurality of stages; and transmitting the color processed data a1 of the current frame corresponding to the first stage of the plurality of stages to the second stage of the plurality of stages of the color processing;
taking the digital gamma processing as the second stage of the plurality of stages of the color processing, wherein the digital gamma processing is configured to receive and process the color processed data a1 of the current frame corresponding to the first stage of the plurality of stages, and obtain the color processed data a2 of the current frame corresponding to the second stage of the plurality of stages, and compare the color processed data a2 of the current frame corresponding to the second stage of the plurality of stages with the color processed data b of the previous frame to obtain a difference, and record the difference as the second difference value Δ2 of the second stage of the plurality of stages; and transmitting the color processed data a2 of the current frame corresponding to the second stage of the plurality of stages to the third stage of the plurality of stages of the color processing; and
taking the dithering processing as the third stage of the plurality of stages of the color processing, wherein the dithering processing is configured to receive and process the color processed data a2 of the current frame corresponding to the second stage of the plurality of stages, and obtain the color processed data a3 of the current frame corresponding to the third stage of the plurality of stages, and compare the color processed data a3 of the current frame corresponding to the third stage of the plurality of stages with the color processed data b of the previous frame to obtain a difference, and record the difference as the second difference value Δ2 of the third stage of the plurality of stages; and storing and setting the color processed data a3 of the current frame corresponding to the third stage of the plurality of stages as a comparison basis for color processed data of a next frame obtained from the plurality of stages of the color processing.

8. The method according to claim 1 , wherein after the operation of receiving the original im

Assignees

• Hkc Corp Ltd

Inventors

• Wang Mingliang

Classifications

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• G09G3/20 Primary

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• G09G2370/14

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