Stretchable Display Power-Line Overlap for Narrow Bezel Layouts
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Solution Overview
Problem
Existing display devices face challenges in minimizing contact resistance of power lines, reducing bezel size, and minimizing defective rates in landscape structures, particularly in flexible and stretchable display devices.
Innovation Solution
The display device incorporates a stretchable lower substrate with a pattern layer featuring overlapping high and low potential voltage lines in the active area, reducing contact resistance and bezel size while minimizing defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If power lines are disposed in the non-active area, then the structure is simple and manufacturing is easier, but contact resistance increases
Solution Approach 1:
The patent transitions from disposing power lines in the non-active area (2D plane) to overlapping them in the active area across multiple layers (3D space). The first and second power lines are disposed in different layers and overlap each other in the active area, reducing contact resistance while maintaining manufacturing simplicity through the multi-layer structure.
2Ease of manufacture
If power lines are disposed in the non-active area, then manufacturing is easier, but bezel size increases
Solution Approach 1:
The patent utilizes vertical stacking in the active area to route power lines, eliminating the need for horizontal routing in the non-active area. This dimensional transition allows power delivery without increasing the bezel area, as the power lines are disposed within the active area's vertical profile rather than extending into the bezel region.
3Device complexity
If power lines are disposed in the non-active area, then the structure is simpler, but defective rate increases in landscape mode
Solution Approach 1:
The patent resolves the landscape mode defect issue by disposing power lines in different layers that overlap in the active area. This multi-layer configuration ensures that even in landscape orientation, the power lines maintain proper electrical connection and positioning, reducing defective rates while keeping the overall structure manageable through systematic layering.
Data Source
AI summary
In order to achieve the above-described technical benefits, according to an aspect of the present disclosure, a display device includes a stretchable lower substrate which includes an active area and a non-active area disposed at the outside of the active area; a pattern layer which is disposed on the lower substrate and includes a plurality of plate patterns and a plurality of line patterns; a plurality of pixels which is disposed above each of the plurality of plate patterns in the active area; and a plurality of connection lines which is disposed above the plurality of line patterns to connect the plurality of pixels, and the plurality of connection lines includes a high potential voltage line and a low potential voltage line which overlap each other in each of the plurality of plate patterns.