Display Panel Power-Line Segmentation for Brightness Uniformity
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Solution Overview
Problem
Display panels in the related art suffer from poor brightness uniformity due to excessive brightness in intermediate regions, caused by short power buses and direct connections between power lines and buses, leading to non-uniform voltage distribution.
Innovation Solution
The display panel design includes first and second sub-regions with power lines and buses, where breaks are formed between second power sub-lines and power buses, and the power lines are connected through multiple connection lines to distribute voltage uniformly, reducing excessive brightness in intermediate regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power lines are directly connected to power buses in intermediate regions, then power transmission efficiency is improved, but brightness uniformity deteriorates due to excessive brightness in intermediate regions
Solution Approach 1:
The power line is segmented into first power sub-lines connected to power buses and second power sub-lines with breaks from power buses. This segmentation allows different regions to have different connection configurations, preventing excessive brightness in intermediate regions while maintaining efficient power transmission in edge regions.
Solution Approach 2:
Different connection configurations are applied to different regions: first power sub-lines in edge regions are directly connected to power buses for efficient power transmission, while second power sub-lines in intermediate regions have breaks to control brightness. This local differentiation resolves the contradiction between transmission efficiency and brightness uniformity.
2Device complexity
If power buses are shortened to reduce manufacturing complexity, then device complexity is reduced, but brightness uniformity deteriorates due to non-uniform voltage distribution
Solution Approach 1:
The power distribution system is segmented into multiple sub-lines with different connection configurations. This segmentation enables uniform voltage distribution across the display panel without requiring excessively long power buses, thus maintaining manufacturing simplicity while achieving brightness uniformity.
Solution Approach 2:
The second power sub-lines with breaks act as intermediaries between the power buses and the display regions. They help distribute voltage uniformly across the panel without requiring the power buses to extend throughout the entire display area, resolving the conflict between bus length and brightness uniformity.
Data Source
AI summary
A display panel and a display apparatus are provided. The display panel includes: a display region, a non-display region, power lines, and power buses. The display region includes first sub-regions and second sub-regions, the first sub-regions and the second sub-regions are arranged along a first direction, and the second sub-region is located between the first sub-region and the non-display region. The power lines are located in the display region, and include first power lines extending along a second direction and arranged in a same layer. The power buses are located in the non-display region. The first power lines include first power sub-lines and second power sub-lines. The first power sub-lines are connected to the power bus. Breaks are formed between the second power sub-lines and the power buses. At least one of the second power sub-lines is located in the first sub-region.