Display Panel Crosstalk Compensation via Binding-Point Grayscale Control
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Solution Overview
Problem
Liquid crystal displays (LCDs) suffer from a vertical crosstalk phenomenon due to voltage variations between data lines and pixel electrodes, leading to reduced image quality.
Innovation Solution
A control method for a display panel that involves determining binding-point grayscale values, initial-state and reference brightness parameters, and relative compensation brightness parameters to regulate the display regions, thereby adjusting control parameters to minimize crosstalk and improve image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coupling capacitors are used in data lines and pixel electrodes, then voltage variations occur between corresponding pixel electrodes, but this causes vertical crosstalk phenomenon and reduces image quality
Solution Approach 1:
The patent applies parameter changes by adjusting grayscale values of binding points and calculating compensation brightness parameters to counteract voltage variations caused by coupling capacitors. This transforms the electrical parameter issue into a controllable display parameter problem that can be solved through software compensation.
Solution Approach 2:
The patent implements feedback by measuring the initial brightness parameters of binding points, comparing them with reference brightness parameters, and using the difference to calculate compensation values. This closed-loop feedback mechanism continuously corrects vertical crosstalk effects in real-time.
2Object-affected harmful factors
If binding-point grayscale values are obtained and compensation parameters are calculated, then vertical crosstalk is reduced, but the control process complexity increases
Solution Approach 1:
The patent segments the display panel into multiple binding points and divides the compensation process into distinct steps: obtaining grayscale values, determining initial brightness parameters, calculating compensation parameters, and applying corrections. This segmentation makes the complex control process more manageable and systematic.
Solution Approach 2:
The patent performs preliminary actions by pre-calculating compensation brightness parameters for different grayscale values before actual display. This allows the system to prepare compensation data in advance, reducing real-time computational complexity during display operation.
Data Source
AI summary
A control method of a display panel and a display device are provided. In the method, at least one binding-point grayscale value is obtained at first; an initial-state control parameter, an initial-state brightness parameter, and a reference brightness parameter of a to-be-regulated region are determined according to each of the binding-point grayscale value; and a relative compensation brightness parameter of the binding-point grayscale value is determined according to the initial-state control parameter, the initial-state brightness parameter, and the reference brightness parameter of the binding-point grayscale value when a ratio of the initial-state brightness parameter to the reference brightness parameter is not within a preset range.