Display Panel Fanout Wire Width Variation for Resistance Uniformity
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Solution Overview
Problem
Existing display panels face issues with resistance differences between fanout wires, leading to uneven charging rates and poor display performance.
Innovation Solution
The display panel incorporates a fanout area with fanout wire portions, where the width of wires closest to the boundary positions varies, and the difference in widths between adjacent wires in each sub-wire group is controlled to minimize resistance differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If uniform wire widths are used in fanout wire portions, then manufacturing is simpler, but resistance differences between fanout wires increase leading to uneven charging rates
Solution Approach 1:
The patent applies local quality by varying the wire widths at different positions within fanout wire portions. Specifically, wires closer to boundary positions have different widths compared to wires in the middle, creating non-uniform wire structures that compensate for resistance differences. This local variation in wire geometry ensures that all fanout wires achieve substantially equal resistance values, thereby improving charging rate uniformity without requiring complex manufacturing processes.
2Reliability
If wire widths are varied to compensate for resistance differences, then charging rate uniformity improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements parameter changes by systematically varying wire width dimensions at different positions within fanout wire portions. By adjusting the width parameter of wires based on their position (closer to boundary vs. middle position), the design compensates for resistance differences and achieves uniform charging rates across all fanout wires. This controlled parameter variation improves reliability while maintaining manufacturability through standardized width values.
Data Source
AI summary
The present disclosure provides a display panel and a display apparatus. The display panel includes: a fan-out region including multiple fan-out wire portions, each fan-out wire portion including multiple wires, and the multiple wires including multiple first wire groups arranged along a direction from a middle position of each fan-out wire portion to a first boundary position of each fan-out wire portion. In the fan-out wire portions, the width of the wire closest to the first boundary position of at least one fan-out wire portion among the at least one fan-out wire portion is greater than the width of the wire closest to the first boundary position of another fan-out wire portion among the another fan-out wire portion.