Display Panel Driving Method for Luminance Flicker Reduction
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Solution Overview
Problem
Existing liquid crystal display technologies using 6-bit driver ICs face issues with low-frequency luminance flicker due to limitations in achieving equal brightness across multiple frames, resulting in unequal perceived brightness and flicker.
Innovation Solution
The method involves dividing pixels into groups with adjacent first and second pixel units, displaying images in multiple frames, and adjusting voltage signals so that the average signal of each frame is consistent across different pixel groups, ensuring equal average voltage signals for both high and low voltage signals across frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple frames are used to achieve higher luminance signal levels (125-level, 57-level), then the display resolution is improved, but low-frequency luminance flicker occurs due to unequal average brightness across frames
Solution Approach 1:
The pixel array is divided into first pixel units and second pixel units that are alternately arranged. First pixel units display images in odd frames while second pixel units display images in even frames, creating a time-division multiplexing scheme that enables higher luminance signal levels without causing flicker
Solution Approach 2:
The display system uses periodic frame switching where first pixel units are activated in odd frames and second pixel units are activated in even frames. This periodic action with consistent average brightness across frames eliminates low-frequency luminance flicker while achieving 125-level or 57-level luminance precision
2Device complexity
If 6-bit driver IC is used to achieve octet quality resolution, then device complexity is reduced, but brightness uniformity deteriorates due to inability to maintain equal average brightness across multiple frames
Solution Approach 1:
The system dynamically switches between first pixel units and second pixel units across different frames, with each unit type being activated in alternating frames. This dynamic switching allows the 6-bit driver IC to achieve 8-bit equivalent resolution while maintaining consistent average brightness and thus brightness uniformity across the display
Data Source
AI summary
The present application relates to a driving method and a display device for a display panel and the method comprises: dividing a pixel into a plurality of pixel groups and each pixel group comprising an adjacent first pixel unit and a second pixel unit; a first voltage signal and a second voltage signal for each pixel group in each frame image; adjusting the first voltage signal and the second voltage signal so that all the first and second voltage signals of each frame is the same as the average signal. The average signal of all the second voltage signals of each frame image is the same. The first voltage signal of the different pixel group is the same as the average signal of the multiple frame image, and the second voltage signal of the different pixel group is the same as the average signal of the multiple frame image.