Mura Compensation Data Acquisition for Display Uniformity
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Solution Overview
Problem
Conventional display technologies face challenges in achieving uniformity due to Mura phenomena, where areas with serious Mura issues experience worse display effects after brightness compensation, as they are treated with the same mode without considering the varying severities of Mura areas.
Innovation Solution
A method and apparatus for acquiring Mura compensation data by determining Mura areas and levels based on brightness data, allowing for the generation of tailored compensation data using different modes and compression ratios for each Mura area, thereby improving display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the same brightness compensation mode is applied to all Mura areas, then the manufacturing process is simplified, but the display effect in areas with serious Mura issues deteriorates
Solution Approach 1:
The patent divides the display panel into multiple Mura areas with different severity levels (first Mura area with lower severity, second Mura area with higher severity). Different brightness compensation modes are applied to different areas: a first compensation mode for the first Mura area and a second compensation mode for the second Mura area. This local differentiation resolves the contradiction by optimizing display uniformity in severe Mura areas while maintaining reasonable overall process complexity.
2Manufacturing precision
If multiple compensation modes are used for different Mura areas, then display uniformity is improved, but the device complexity increases
Solution Approach 1:
The patent segments the Mura compensation process into distinct stages: Mura area identification, severity level determination (first level or second level based on threshold comparisons), and mode selection (first compensation mode or second compensation mode). This segmentation manages complexity by creating a systematic decision framework rather than requiring complex real-time adjustments, thus improving display uniformity while keeping the system manageable.
Solution Approach 2:
The patent uses parameter changes (Mura level thresholds, brightness data comparisons) to automatically determine which compensation mode to apply. By changing parameters like the Mura level threshold and comparing actual brightness data against these parameters, the system selects appropriate compensation modes dynamically, reducing manual configuration complexity while achieving better display uniformity.
3Quantity of substance
If high compression ratio is used for Mura compensation data, then storage efficiency is improved, but the compensation precision for severe Mura areas deteriorates
Solution Approach 1:
The patent applies different compression ratios to different Mura areas based on their severity levels. For the first Mura area (lower severity), a higher compression ratio can be used to save storage space. For the second Mura area (higher severity), a lower compression ratio is used to preserve compensation precision. This local differentiation resolves the contradiction by optimizing storage efficiency overall while maintaining necessary accuracy in critical areas.
Data Source
AI summary
The present disclosure relates to a method and an apparatus for acquiring Mura compensation data, a computer device and a storage medium, in which one or more Mura areas in a display panel are determined according to brightness data of a detection picture, and one or more Mura areas in the display panel are graded, and then compensation data of the display panel is determined according to the Mura level and the brightness data of the detection picture.