Curved AMOLED Gamma Voltage Adjustment by Sub-Region Segmentation
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Solution Overview
Problem
Curved AMOLED display panels experience color cast phenomena due to varying curvatures, leading to inconsistent display quality when using a single gamma voltage across all regions, which affects image rendering and viewer experience.
Innovation Solution
A method and device that adjust gamma voltage by dividing the curved display panel into sub-regions based on bending degree, determining inclined angles, and assigning specific gamma voltages to each sub-region to maintain white balance and prevent color cast, using a first gamma voltage for the planar region and multiple second gamma voltages for sub-regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single gamma voltage is used across all regions of the curved display panel, then the device complexity is reduced, but color cast phenomena occur due to varying curvatures leading to inconsistent display quality
Solution Approach 1:
The curved display panel is divided into multiple sub-regions based on bending degree, with each sub-region assigned a specific gamma voltage. This segmentation allows different parts of the curved display to have optimized gamma voltages tailored to their local curvature characteristics, eliminating color cast phenomena while maintaining manageable device complexity through systematic regional control.
Solution Approach 2:
Different gamma voltages are applied to different sub-regions of the curved display panel according to their specific bending degrees. This local quality approach ensures that each region receives the appropriate gamma voltage for its curvature characteristics, achieving consistent display quality across the entire curved surface without requiring complex global control systems.
2Manufacturing precision
If the curved display region is divided into multiple sub-regions with different gamma voltages, then display quality and white balance consistency are improved, but the device complexity and control difficulty increase
Solution Approach 1:
The curved display region is pre-divided into sub-regions with predetermined boundaries based on bending degree characteristics before operation. Gamma voltages are assigned to each sub-region in advance according to their curvature profiles, allowing the system to maintain white balance consistency without requiring complex real-time control decisions during display operation.
Solution Approach 2:
Gamma voltages are adjusted as a function of bending degree parameters for different sub-regions. By establishing a relationship between bending degree and optimal gamma voltage, the system can maintain white balance consistency through parameter-based control rather than complex multi-variable control algorithms, reducing overall device complexity.
Data Source
AI summary
A method for adjusting a gamma voltage of a curved display panel includes following steps. A first gamma voltage is used as a gamma voltage of a planar display region of a curved display panel in a situation that the planar display region of the curved display panel is horizontally placed and in a white balance state. A curved display region of the curved display panel is divided into a plurality of sub-regions according to a bending degree of the curved display region of the curved display panel. A plurality of inclined angles are determined. A plurality of second gamma voltages are determined in a one-to-one correspondence with the plurality of inclined angles in a situation that the planar display region of the curved display panel is tilted at the plurality of inclined angles and in the white balance state.