Display Panel Register Adjustment for Image Sticking Reduction
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Solution Overview
Problem
Display panels suffer from issues of image sticking and smear due to excessive data voltage applied to the gate of drive transistors, causing shifts in transistor characteristics and hysteresis effects.
Innovation Solution
A display control method and apparatus that determines a target register value for gray level 0 by adjusting a reference register value based on a reference gray level, allowing the data voltage for gray level 0 to be determined according to the actual requirements of the display panel, thereby avoiding excessive voltage and reducing image sticking and smear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If higher VGMP is directly selected as data voltage at gray level 0, then brightness requirement is met, but image sticking and smear occur due to excessive voltage causing transistor characteristic shifts
Solution Approach 1:
The patent changes the parameter of data voltage for gray level 0 from a fixed high value (VGMP) to an adjustable value determined by actual display requirements. By modifying the register value parameter, the system optimizes the voltage level to meet brightness requirements while avoiding excessive voltage that causes image sticking and smear.
Solution Approach 2:
The patent introduces dynamic adjustment of the register value for gray level 0, allowing the data voltage to be adapted based on actual display panel characteristics and requirements. This dynamic approach replaces the static fixed voltage assignment, enabling optimization of both brightness and image quality.
2Reliability
If reference register value is adjusted to determine target register value for gray level 0, then data voltage is optimized according to actual requirements, but additional processing steps are required
Solution Approach 1:
The patent performs preliminary determination of the target register value for gray level 0 based on reference register values from other gray levels. This preliminary action allows the system to pre-calculate optimal voltage parameters during initialization or calibration, avoiding the need for complex real-time adjustments during normal display operation.
Data Source
AI summary
A display control method and apparatus for a display panel, a device, and a storage medium. The display control method for a display panel includes: obtaining a reference register value corresponding to a reference gray level of a display panel, where a display parameter of the display panel when the display panel performs reference gray level display based on the reference register value meets a target requirement, and the display parameter includes brightness; and adjusting the reference register value to obtain a target register value, and using the target register value as a register value corresponding to a gray level 0 of the display panel, where brightness of the display panel when the display panel performs gray level 0 display based on the target register value meets a requirement