Display Processor Line Crosstalk Compensation
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Solution Overview
Problem
Display devices suffer from line crosstalk issues due to manufacturing processes or device types, which are exacerbated on specific backgrounds like white or black, and existing solutions such as adding a compensate capacitor or compensating supply power are not effective.
Innovation Solution
A processor is implemented in the display device to calculate total coupling coefficients for frames, determine coupling coefficient differences between adjacent lines, and generate compensation values for sub-pixels based on these calculations to produce output data that reduces line crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a compensate capacitor is added or supply power compensation is applied, then line crosstalk problem is attempted to be solved, but the compensation effect is not good
Solution Approach 1:
The patent changes the compensation parameters by calculating coupling coefficients and compensation values for different frames and lines, then applies these dynamically adjusted parameters to the pixel data to effectively compensate for line crosstalk without adding complex hardware structures
Solution Approach 2:
The patent replaces the mechanical/electrical compensation approach (using capacitors or supply power adjustment) with a data processing approach, substituting physical compensation mechanisms with computational compensation through coupling coefficient calculation and pixel value adjustment
2Reliability
If line crosstalk compensation is implemented through traditional methods, then some compensation is achieved, but the compensation effect is insufficient especially on white or black backgrounds
Solution Approach 1:
The patent implements dynamic compensation by calculating coupling coefficients and compensation values that vary with each frame and line, adapting the compensation amount to the specific content being displayed, which makes it effective for different background types including white and black backgrounds
Solution Approach 2:
The patent uses a feedback mechanism where the coupling coefficient calculation based on previous frame data informs the compensation value for the current frame, creating a adaptive system that responds to actual display conditions and improves compensation effectiveness
Data Source
AI summary
A processor is disposed in a display device and is configured to perform following operations: calculating a total coupling coefficient for a (N−1)th frame according to input data, in which N is a positive integer greater than 1; calculating a coupling coefficient difference value of two adjacent lines for a Nth frame according to the input data; generating a first compensation value for a target sub-pixel according to the coupling coefficient difference value and target input data of the target sub-pixel; generating a second compensation value for the target sub-pixel according to the first compensation value and the total coupling coefficient; generating an output data for the target sub-pixel according to the target input data and the second compensation value; and controlling a display panel in the display device to display a final image according to the output data.