LCD Display Compensation With Partitioned Backlight and Grayscale Tables
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Solution Overview
Problem
Conventional brightness compensation solutions fail to improve brightness uniformity while ensuring grayscale transition continuity in display panels.
Innovation Solution
A display compensation method involving backlight and display brightness adjustments using compensation tables to adjust backlight and display partitions, respectively, to achieve uniformity and continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional brightness compensation solutions are used to improve brightness uniformity, then brightness uniformity is improved, but grayscale transition continuity deteriorates
Solution Approach 1:
The patent divides the backlight module into multiple independently controllable backlight partitions (e.g., first backlight partition, second backlight partition, third backlight partition) and applies different compensation strategies to each partition. This segmentation allows selective adjustment of backlight brightness in different regions without uniformly affecting the entire display, thereby improving brightness uniformity while preserving grayscale transition continuity in each partition.
Solution Approach 2:
The patent implements local compensation by determining different compensation parameters for different backlight partitions based on their specific brightness characteristics. Each partition receives customized compensation values that address its local brightness issues without impacting other regions, thus achieving improved brightness uniformity while maintaining local grayscale transition quality.
2Manufacturing precision
If backlight brightness is adjusted to compensate display brightness, then brightness uniformity is improved, but display complexity increases
Solution Approach 1:
The patent pre-calculates and stores compensation parameters for each backlight partition in advance, creating a compensation parameter set that maps partition identifiers to specific compensation values. This preliminary action allows the system to apply compensation by simply retrieving and applying pre-determined parameters, significantly reducing real-time computational complexity while maintaining effective brightness uniformity compensation.
Data Source
AI summary
The present application discloses a display compensation method and a liquid crystal display device. The display compensation method adjusts backlight brightness corresponding to backlight partitions by a backlight compensation table, therefore can roughly adjust a brightness difference of the display panel, and can also improve a contrast of a screen image, which advantages for guaranteeing grayscale transition continuity of a screen image; also, adjusting by a display compensation table adjusts grayscale data corresponding to the display partitions can achieve fine adjustment of the brightness difference of the display panel such that uniformity of the display brightness can be further increased.