Curved Screen Edge Pixel Compensation for Color Uniformity
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Solution Overview
Problem
Curved screens in electronic devices often exhibit color deviation at the edge, leading to poor optical uniformity.
Innovation Solution
A method for image compensation, which includes determining row and column coordinates for each pixel, symmetrically mapping these coordinates to obtain target coordinates, and calculating a compensation coefficient based on these target coordinates to determine a target pixel value, addressing color deviation in the edge region of curved screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If curved screen is used to improve user experience, then ergonomics and aesthetics are improved, but optical uniformity deteriorates with color deviation at edges
Solution Approach 1:
The patent applies different compensation coefficients to different regions of the curved screen. Specifically, pixels in the edge region (first curved region) receive different compensation values compared to pixels in the non-curved region. This local differentiation addresses the color deviation problem at edges while preserving the overall curved screen design benefits.
Solution Approach 2:
The patent dynamically adjusts pixel values by applying compensation coefficients that modify the original pixel data. The compensation coefficient varies based on the pixel's position in the curved region, changing parameters such as brightness and color to correct the optical uniformity issue while maintaining the curved screen's ergonomic advantages.
2Manufacturing precision
If image compensation is applied to correct color deviation, then optical uniformity is improved, but processing time and computational resources increase
Solution Approach 1:
The patent divides the screen into distinct regions: a first curved region where compensation is applied and a non-curved region where original pixel values are retained. This segmentation allows compensation processing to be focused only on the edge regions that exhibit color deviation, reducing the overall computational burden compared to processing the entire screen.
Solution Approach 2:
The patent applies compensation coefficients selectively only to pixels in the curved edge region rather than to all pixels on the screen. This partial action approach corrects the color deviation problem in the affected areas while avoiding unnecessary processing in regions that do not exhibit optical uniformity issues, thus reducing processing time and computational resource occupation.
3Manufacturing precision
If complex compensation algorithms are used to correct color deviation, then display quality is improved, but device complexity increases
Solution Approach 1:
The patent implements a region-specific compensation approach where complex calculations are performed only for pixels in the curved edge region. The compensation coefficient is determined based on the pixel's position within this specific region, allowing sophisticated local correction without requiring complex algorithms to be applied globally across the entire display.
Solution Approach 2:
The patent modifies pixel display parameters by applying compensation coefficients that adjust brightness and color values. This parameter-based approach provides a relatively simple mathematical transformation that corrects color deviation without requiring complex algorithmic structures, maintaining display quality while controlling device complexity.
Data Source
AI summary
An apparatus and method for image compensation, a display driver, and a display are provided. The image compensation apparatus is applied to an electronic device with a curved screen and includes: a coordinate determination unit, configured to determine a row coordinate and a column coordinate for each of at least one pixel; a compensation coefficient determination unit, configured to: symmetrically map a row coordinate and a column coordinate of each of pixels located in an edge region of the curved screen, respectively, to obtain a target row coordinate and a target column coordinate of the pixel, and determine a compensation coefficient of the pixel based on the target row coordinate or the target column coordinate of the pixel; and a compensation unit, configured to determine a target pixel value of the pixel based on the compensation coefficient of the pixel and an original pixel value of the pixel.