Display Driving With Grayscale Pre-Charging at Black-White Boundaries
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display panels with high-frequency frame refresh rates experience insufficient charging of data voltage, leading to line shape image sticking at black and white boundaries, resulting in poor display quality.
Innovation Solution
A display driving method that adjusts grayscale values by comparing current and adjacent pixel values, using a look-up table to determine new grayscale values, thereby pre-charging data signal lines to reduce image sticking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high-frequency frame refresh rate is used, then display refresh speed is improved, but data voltage charging becomes insufficient causing image sticking
Solution Approach 1:
The patent applies preliminary action by comparing the grayscale value of the current pixel with adjacent pixels before driving the pixel. When a significant difference is detected, the grayscale value is adjusted in advance to pre-charge the data signal line, preventing insufficient charging during high-frequency refresh and eliminating image sticking at boundaries.
2Reliability
If grayscale value adjustment is performed, then image sticking is reduced, but processing complexity increases
Solution Approach 1:
The patent applies local quality by performing grayscale value adjustment only at specific locations where image sticking is likely to occur. The system compares each pixel's grayscale value with its adjacent pixels and only adjusts values at boundaries where significant differences exist, rather than uniformly processing all pixels. This localized approach reduces processing complexity while maintaining display quality.
Data Source
AI summary
A display driving method and a display device are provided. The display driving method includes following steps: obtaining frame data of a current frame; driving a first pixel according to a first grayscale value corresponding to the first pixel in the frame data; determining whether a second grayscale value corresponding to a second pixel in the frame data is significantly different from the first grayscale value corresponding to the first pixel; obtaining a new second grayscale value when the second grayscale value is significantly different from the first grayscale value; and driving the second pixel according to the new second grayscale value. The display driving method and display device of the disclosure may achieve good display effects.