Display Panel Resistance-Reduction Wire Grid for Brightness Uniformity
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Solution Overview
Problem
Current display panels experience non-uniform brightness due to voltage drop caused by resistance in the source/drain electrode, leading to decreased display quality.
Innovation Solution
Incorporating resistance-reduction wires connected to the power drive wire through holes, forming a grid structure that reduces metal wire resistance and voltage drop, and enhancing brightness uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If source/drain electrode is used to transmit drive current, then display function is realized, but voltage drop occurs due to resistance leading to non-uniform brightness
Solution Approach 1:
The patent divides the power transmission path into multiple parallel paths by introducing resistance-reduction wires (first resistance-reduction wire and second resistance-reduction wire) that are electrically connected to the power drive wire through through-holes. This segmentation creates alternative current paths that reduce the overall resistance and voltage drop in the source/drain electrode, thereby improving brightness uniformity across the display panel.
Solution Approach 2:
The resistance-reduction wires act as intermediary elements between the power drive wire and the source/drain electrode. These wires provide a lower-resistance connection path, mediating the power transmission to reduce voltage drop and improve voltage stability, which directly addresses the brightness uniformity issue.
2Illumination intensity
If resistance-reduction wire is added to reduce voltage drop, then brightness uniformity is improved, but device complexity increases
Solution Approach 1:
The patent merges the resistance-reduction wires with existing display panel structures by integrating them into the same substrate and coordinating their layout with the gate electrode layer and source/drain electrode layer. The resistance-reduction wires are positioned to utilize existing through-holes and align with the pixel arrangement, combining multiple functions into a coordinated structure that reduces complexity despite adding components.
Solution Approach 2:
The resistance-reduction wires serve multiple functions: they reduce resistance and voltage drop, improve brightness uniformity, and maintain compatibility with existing display panel architectures. The first and second resistance-reduction wires work together with the power drive wire to create a multi-functional power transmission system that addresses both performance and integration requirements.
Data Source
AI summary
A display panel and a method of manufacturing same, the display module. The display panel includes a substrate; a signal wire layer disposed on the substrate. The signal wire layer includes a gate electrode layer and a source/drain electrode layer. The gate electrode includes a gate electrode and a scanning signal wire. The source/drain electrode layer includes a source electrode, a drain electrode, and a power drive wire. The display panel further includes a resistance-reduction wire disposed between the substrate and the source/drain electrode layer. The resistance-reduction wire is electrically connected to the power drive wire by a through hole.