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Gray scale display driving method

A display-driven, grayscale technology, used in static indicators, instruments, etc., can solve the problems of limited refresh rate, affect picture quality, and flickering of images, and achieve the effect of improving stability and refresh rate.

Inactive Publication Date: 2020-06-09
深圳市德普微电子有限公司
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Problems solved by technology

The number of PWM groups displayed in one display cycle is fixed, and the resulting refresh rate is also fixed and limited, which makes the displayed image prone to flickering and affects the picture quality

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] refer to figure 1 As shown, a grayscale display driving method, the method includes:

[0019] S01: divide the grayscale data into high grayscale data and low grayscale data;

[0020] S02: High-grayscale data is displayed in high-grayscale frames, and low-grayscale data is displayed in low-grayscale frames;

[0021] S03: High-grayscale frames are displayed cyclically, and low-grayscale frames are divided into N groups for display and combined with high-grayscale frames to form a complete display frame;

[0022] In the method of the present invention, in each display frame, after N groups of low-grayscale frames are displayed, the high-grayscale frames are continued to be displayed.

[0023] refer to image 3 As shown, the high grayscale data generates high grayscale PWM through the high grayscale PWM generation module; the low graysca...

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Abstract

The invention discloses a gray scale display driving method. The method comprises the following steps: dividing gray scale data into high gray scale data and low gray scale data; displaying the high gray scale data according to a high-gray-scale frame, and displaying the low gray scale data according to a low-gray-scale frame; circularly displaying the high-gray-scale frame, dividing the low-gray-scale frame into N groups to be displayed, and displaying the low-gray-scale frame and the high-gray-scale frame in a combined manner to form a complete display frame. In each display frame, after N groups of low-gray-scale frames are completely displayed, the high-gray-scale frame is continuously displayed. By means of the mode, the gray scale is divided into the high gray scale part and the lowgray scale part, the high gray scale is not limited to be displayed in a display frame in an infinite circulation mode, so that the refresh rate is increased, and the display effect of the display screen is more stable.

Description

technical field [0001] The invention relates to the technical field of driving LED display screens, in particular to a grayscale display driving method. Background technique [0002] The LED display has the advantages of high grayscale, wide viewing angle, rich colors, and customizable screen shape, etc., and is widely used in various fields such as industry, transportation, and commercial advertising. In the LED display, a constant current source driver chip capable of outputting high-refresh PWM is usually used. They usually display the overall grayscale data in a fixed number of groups, and the overall refresh rate is limited by the set number of groups. The number of PWM groups displayed in one display period is fixed, and the resulting refresh rate is also fixed and limited, which makes the displayed image prone to flickering and affects the image quality. Contents of the invention [0003] The purpose of the present invention is to provide a grayscale display drivin...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 梁芳陽
Owner 深圳市德普微电子有限公司
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