Stretchable Display Substrate Layout for Reliable Signal Input
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Solution Overview
Problem
Stretchable display devices face challenges in reliability and lifetime, limiting their commercialization due to issues with signal input and structural integrity during stretching operations.
Innovation Solution
The electronic device features a substrate with distinct regions for light emitting groups and signal pads, where the substrate is designed to stretch with varying ratios, enhancing signal input reliability and extending the device's lifetime by optimizing the structural layout and material distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the display area is enlarged for specific purposes, then the functionality and application scope are improved, but the reliability and lifetime deteriorate due to stretching operations
Solution Approach 1:
The substrate is divided into multiple regions with different stretching ratios. The first region (display area) and second region (non-display area) are segmented to have different mechanical properties, allowing the display area to be enlarged while the non-display area maintains structural integrity and provides buffer zones that reduce stress during stretching operations.
Solution Approach 2:
Different regions of the substrate are assigned different local qualities in terms of stretching ratios. The first region is designed with specific stretching characteristics optimized for display functionality, while the second region has different stretching properties that prioritize structural stability, allowing each region to perform its function optimally without compromising overall reliability.
2Ease of operation
If the size of the stretchable display device is made relatively small for portability, then the ease of carrying is improved, but the display area is limited
Solution Approach 1:
The device employs dynamic stretching capabilities where the substrate can transition between different states. When not in use, the device maintains a compact form factor for portability. When needed, the first region can be stretched to expand the display area, allowing the device to adapt its size dynamically based on usage requirements.
3Reliability
If the substrate is designed to stretch with varying ratios in different regions, then the signal input reliability is improved, but the structural complexity increases
Solution Approach 1:
The substrate is segmented into distinct regions with defined stretching ratios. The first region is configured to stretch at a first ratio while the second region stretches at a second ratio. This segmentation allows for optimized signal transmission in each region while maintaining a relatively simple overall structure that can be manufactured using standard flexible substrate techniques.
Data Source
AI summary
An electronic device includes a substrate and an electronic structure. The substrate includes a first opening, and the substrate has a first side and a second side opposite to the first side. The electronic structure is disposed on the first side of the substrate. The electronic structure includes a first insulating layer and a conductive layer. In a cross-sectional view, the first opening includes a first width on the first side of the substrate, a second width on the second side of the substrate, and a third width disposed between the first width and the second width. The first width of the first opening is greater than the third width of the first opening. The second width of the first opening is greater than the third width of the first opening.