Display Panel Overdrive Compensation for Horizontal Stripe Correction
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Solution Overview
Problem
Existing display panel technologies face issues with horizontal stripe and color deviation due to inconsistent charging states of sub-pixels, particularly at different refresh rates, which conventional line overdrive compensation methods fail to adequately address.
Innovation Solution
A display compensation method that involves optimizing gain values in a compensation table to perform overdrive compensation in different directions for sub-pixels with varying charging states, using negative and positive compensation based on specific gain values for partitions with opposite charging states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional line overdrive compensation is applied to the entire screen, then horizontal stripe is improved at one side, but the other side with different charging states remains unoptimized
Solution Approach 1:
The screen is divided into multiple regions (first region and second region) based on different charging states of sub-pixels. Each region is independently compensated using different overdrive grayscale values, allowing optimized correction for each zone rather than applying a uniform compensation across the entire screen.
Solution Approach 2:
Different overdrive compensation strategies are applied to different regions of the screen. The first region uses a first overdrive grayscale while the second region uses a second overdrive grayscale, matching the local charging characteristics of each region to achieve optimal compensation效果.
2Device complexity
If the same overdrive compensation is applied to all sub-pixels, then the compensation process is simple, but it cannot address the different charging states of sub-pixels at different positions
Solution Approach 1:
The display panel is segmented into multiple regions with different charging characteristics. By dividing the screen into first and second regions based on sub-pixel charging states, the system can apply region-specific overdrive compensation without significantly increasing overall system complexity.
Solution Approach 2:
The overdrive grayscale parameter is changed according to the region being compensated. Different overdrive grayscale values are used for different regions to match their specific charging states, achieving improved display uniformity while maintaining manageable complexity through parameter variation.
Data Source
AI summary
A display compensation method of a display panel and a display panel are provided. The display panel includes a first partition and a second partition spaced apart. The first partition includes a plurality of first sub-pixels, the second partition includes a plurality of second sub-pixels, and the display compensation method includes: obtaining a first overdrive grayscale corresponding to a grayscale to be displayed of each of the plurality of first sub-pixels in a current frame image, and a second overdrive grayscale corresponding to a grayscale to be displayed of each of the plurality of second sub-pixels; obtaining a first compensating grayscale based on the first overdrive grayscale; obtaining the second compensating grayscale based on the second overdrive grayscale; and controlling the display panel to complete display compensation of the current frame image based on the first compensating grayscale and the second compensating grayscale.