Display Panel Voltage Mesh for Round-Edge Luminance Uniformity
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Solution Overview
Problem
Display panels with round-type edges experience luminance drop in pixels adjacent to the edge, leading to reduced display quality.
Innovation Solution
The display panel design includes a first and second constant voltage transfer line extending from a constant voltage transfer electrode via different edges, with horizontal and vertical transfer lines forming a mesh shape to ensure even voltage distribution, and demultiplexer units providing data signals through distinct paths to maintain luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional display panel design with simple transfer lines is used, then the device complexity is low, but luminance uniformity deteriorates due to luminance drop at round-type edges
Solution Approach 1:
The transfer line structure is segmented into multiple independent paths: a first constant voltage transfer line extending via the flat-type edge and a second constant voltage transfer line extending via the round-type edge. This segmentation allows voltage to be distributed through multiple routes, ensuring uniform voltage supply to pixels at the round-type edge and preventing luminance drop without requiring a completely complex redesign of the entire display panel architecture.
Solution Approach 2:
The patent introduces a spatial dimension by extending transfer lines in different directions from the constant voltage transfer electrode - one path through the flat-type edge region and another through the round-type edge region. This multi-directional extension in different spatial dimensions enables simultaneous voltage supply to multiple pixel regions, achieving luminance uniformity while maintaining manageable structural complexity through systematic line arrangement.
2Reliability
If multiple transfer lines are added to prevent luminance drop, then luminance uniformity is improved, but the device complexity increases
Solution Approach 1:
The first constant voltage transfer line and the second constant voltage transfer line are merged into a unified voltage distribution system that shares common structures such as the constant voltage transfer electrode and horizontal transfer lines. This merging approach ensures reliable voltage supply to all pixels including those at the round-type edge while avoiding the need for completely separate and complex independent transfer line systems for each path.
Solution Approach 2:
The horizontal transfer lines serve multiple functions: they connect both the first and second constant voltage transfer lines, and they also connect to the demultiplexer units for data signal transmission. This multi-functionality reduces the overall device complexity by eliminating the need for separate dedicated connection structures, while still ensuring reliable voltage and signal distribution to maintain luminance stability.
3Stability of the object's composition
If transfer lines extend via multiple paths, then voltage distribution uniformity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies different extension strategies to different regions: the first constant voltage transfer line extends via the flat-type edge where alignment is more straightforward, while the second constant voltage transfer line extends via the round-type edge with appropriate local adjustments. This localized approach ensures uniform voltage distribution in each region while managing manufacturing precision requirements by adapting the line configuration to the specific geometric characteristics of each edge type rather than applying uniform high-precision requirements across the entire structure.
Data Source
AI summary
A display panel includes a plurality of pixels disposed in a display area, where the display area includes a round-type edge and a flat-type edge extending from the round-type edge, a first constant voltage transfer electrode extending in a first direction and disposed in a peripheral area adjacent to the display area, a first constant voltage transfer line electrically connected to the first constant voltage transfer electrode in the peripheral area, where the first constant voltage transfer line extends from the first constant voltage transfer electrode to the display area via the flat-type edge, and a second constant voltage transfer line electrically connected to the first constant voltage transfer electrode in the peripheral area, where the second constant voltage transfer line extends from the first constant voltage transfer electrode to the display area via the round-type edge.