Curved Display Panel Color Deviation Correction
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Solution Overview
Problem
Conventional display screens with high bending angles suffer from severe color deviation, particularly at the edges, where white colors are significantly affected, leading to reduced user experience.
Innovation Solution
A method and apparatus that determine a central pixel in each curved region of a display panel, calculate chromaticity coordinates under various gray-scale combinations, and adjust the gray-scale combinations to minimize color deviation by matching the chromaticity coordinates of the central pixel to reference coordinates from the planar region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the bending angle of the display screen is increased to achieve a high screen-to-body ratio, then the screen-to-body ratio is improved, but color deviation at the edge of the screen worsens
Solution Approach 1:
The patent applies different gray-scale combinations to different curved regions based on their specific bending angles and positions. Each curved region is treated with localized color correction parameters rather than a uniform approach, allowing the display to maintain accurate color representation across varying curvature zones while achieving high screen-to-body ratio
Solution Approach 2:
The patent dynamically adjusts gray-scale parameters for different curved regions by determining chromaticity coordinates under multiple gray-scale combinations and selecting optimal combinations that minimize color deviation. This parameter optimization allows the display to compensate for color shifts caused by high bending angles, resolving the contradiction between screen-to-body ratio and color accuracy
2Shape
If the bending angle is increased to achieve bezel-less display effect, then the visual appearance is improved, but color accuracy deteriorates
Solution Approach 1:
The patent divides the curved edge region into multiple curved regions and applies specific gray-scale combinations to each region based on its local characteristics. This localized correction ensures that color accuracy is maintained in each specific area while the overall display achieves the desired bezel-less appearance with high bending angles
Solution Approach 2:
The patent pre-determines chromaticity coordinates under multiple gray-scale combinations and selects optimal gray-scale combinations before actual display operation. This preliminary calibration allows the system to compensate for color deviations caused by high bending angles, ensuring color accuracy is achieved before the display is used
Data Source
AI summary
A method and an apparatus for controlling displaying in a display panel. The display panel comprises a planar region and a curved edge region that is divided into multiple curved regions. The method includes: determining, for each curved region, a central pixel among all pixels in said curved region; determining multiple gray-scale combinations; determining chromaticity coordinates of the central pixel of each curved region under each gray-scale combination; determining reference chromaticity coordinates of a target pixel in the planar region under the maximum one of the gray-scale combinations; determining, for each curved region, a target gray-scale combination based on a difference between the reference chromaticity coordinates and the chromaticity coordinates of the central pixel of said curved region under each gray-scale combination; and controlling displaying in each curved region based on the target gray-scale combination of said curved region.