Overdrive Lookup Table Scaling for LCD Panel Uniformity
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Solution Overview
Problem
Establishing overdrive lookup tables for high-definition liquid crystal display panels with dual gate driving structures is excessively resource-intensive and costly due to the need for exhaustive verification methods, leading to inconsistent image uniformity across the display panel.
Innovation Solution
A method is introduced to determine a target reference area and adjustment area, measure corresponding color coordinate matrices, and calculate an overdrive lookup table for the adjustment area, which is then scaled and applied to the entire display panel, reducing the number of required adjustments and resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If exhaustive verification method is used to establish overdrive lookup table, then the accuracy of lookup table is improved, but the cost and time consumption increase significantly
Solution Approach 1:
The patent divides the display panel into multiple regions (central region and peripheral regions) and establishes overdrive lookup tables for each region separately. This segmentation allows the exhaustive verification method to be applied only to the central region, while peripheral regions use scaled versions, significantly reducing the overall establishment time while maintaining accuracy where it matters most.
Solution Approach 2:
The patent applies different establishment strategies to different regions: the central region receives full exhaustive verification for maximum accuracy, while peripheral regions use scaled lookup tables. This local differentiation optimizes the balance between accuracy and time consumption by focusing computational resources on the most critical area.
2Measurement precision
If exhaustive verification method is used to establish overdrive lookup table, then the accuracy of lookup table is improved, but the resource consumption increases significantly
Solution Approach 1:
The patent segments the display panel into central and peripheral regions, applying exhaustive verification only to the central region. This reduces the total number of verification operations from what would be required for the entire panel, thereby reducing computational resources and material consumption while maintaining necessary accuracy.
Solution Approach 2:
The patent creates scaled copies of the central region's lookup table for peripheral regions. Instead of performing exhaustive verification for each region, the system generates derivative tables by scaling the central table, dramatically reducing resource consumption while providing adequate accuracy for peripheral areas.
3Speed
If dual gate driving structure is used, then the charging speed is improved, but the image uniformity deteriorates due to insufficient charging
Solution Approach 1:
The patent applies different overdrive compensation strategies to different regions: the central region uses a fully verified lookup table, while peripheral regions use scaled versions with appropriate adjustments. This local differentiation compensates for the insufficient charging effect in peripheral areas caused by the dual gate driving structure, restoring image uniformity while preserving the speed benefits.
Data Source
AI summary
The present disclosure discloses a method of establishing overdrive lookup table for display panel, which could determine the overdrive lookup table of the display panel according to an overdrive lookup table of a target adjustment area after determining the overdrive lookup table of the target adjustment area.