Stretchable Display Line Layout for Uniform Power Delivery
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Solution Overview
Problem
Conventional display devices face challenges in minimizing line resistance and signal delay due to the arrangement of connection lines, which affects the reliability and uniformity of images, especially when stretched or bent.
Innovation Solution
A stretchable display device design featuring a lower and upper pattern layer with stretched and unstretched lines on different planes, allowing for a larger gap between lines to reduce line resistance and improve signal transmission reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection lines are arranged on a single plane in conventional display devices, then the device structure is simple, but line resistance increases and signal delay occurs
Solution Approach 1:
The patent applies dimensionality change by transitioning from a single-plane line arrangement to a multi-plane configuration. Connection lines are distributed across multiple planes (first plane, second plane, third plane, fourth plane) with different orientations. This spatial distribution reduces line resistance and signal delay by providing multiple parallel conduction paths, while the systematic layering maintains structural organization and manufacturability.
2Area of stationary object
If lines are arranged closely together to maximize active area, then area utilization is high, but stretching reliability decreases
Solution Approach 1:
The patent resolves this contradiction by distributing lines across multiple planes rather than concentrating them on a single plane. Lines on different planes (e.g., first plane with first direction, second plane with second direction perpendicular to first) can be arranged more densely in the projected area while maintaining adequate spacing in three-dimensional space, thus maximizing active area while preserving stretching reliability.
3Manufacturing precision
If uniform power supply is achieved through optimized line arrangement, then image uniformity improves, but manufacturing complexity increases
Solution Approach 1:
The patent segments the connection line system into multiple distinct planes with specific functional assignments. Each plane contains lines oriented in specific directions (first direction, second direction perpendicular to first, etc.), allowing independent optimization and control of power distribution in different regions. This segmentation enables precise control over voltage drops and signal integrity, achieving image uniformity through systematic power distribution while maintaining clear manufacturing guidelines for each plane.
Data Source
AI summary
A display device according to an example embodiment of the present disclosure may include a stretchable lower substrate; a lower pattern layer disposed on the lower substrate and including a plurality of lower plate patterns and a plurality of lower line patterns; a plurality of pixel circuits disposed on each of the plurality of lower plate patterns; a plurality of lower stretched lines disposed on each of the plurality of lower line patterns; an upper pattern layer disposed on the lower pattern layer and including a plurality of upper plate patterns and a plurality of upper line patterns; a plurality of light emitting elements disposed on each of the plurality of upper plate patterns; and a plurality of upper stretched lines disposed on each of the plurality of upper line patterns, so that a uniform power may be supplied.