Stretchable Display Layout With Overlap Areas for Higher Resolution
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Solution Overview
Problem
Stretchable display devices face limitations in increasing resolution due to the need for sufficient space in the soft area to maintain stretching properties and reliability, which restricts the compact design and functionality.
Innovation Solution
A stretchable display device design with a substrate comprising rigid and soft areas, where the rigid areas and soft areas partially overlap, and the distance between adjacent rigid areas is smaller than the length of the soft areas, incorporating a thin film transistor, planarization layer, and stretchable lines, allowing for high resolution and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sufficient space is allocated for the soft area to maintain stretching properties, then stretching reliability is improved, but the resolution of the display device is limited
Solution Approach 1:
The patent introduces an overlap area where rigid areas and soft areas partially overlap in the spatial arrangement. This dimensional reconfiguration allows the soft area to extend further in the stretching direction while maintaining adequate rigid area space for high-resolution pixels, thereby resolving the contradiction between stretching reliability and resolution.
Solution Approach 2:
The display device is segmented into distinct rigid areas containing pixels and soft areas containing connection lines, with strategic overlap between these segments. This segmentation allows each area to be optimized for its specific function while the overlap region provides the necessary buffer for stretching without compromising either resolution or stretching reliability.
2Measurement precision
If the distance between adjacent rigid areas is reduced to increase resolution, then the display resolution is improved, but the stretching properties and flexibility are compromised
Solution Approach 1:
By creating an overlap area where soft areas extend beyond the rigid areas in the stretching direction, the patent achieves greater effective soft area length without reducing the distance between adjacent rigid areas. This dimensional extension allows both high resolution and good stretching properties to coexist.
Solution Approach 2:
The patent applies different structural characteristics to different regions: rigid areas are densely packed for high resolution, while soft areas are extended and overlap with rigid areas to provide stretching capability. This local differentiation allows simultaneous optimization of resolution and stretching properties.
Data Source
AI summary
A stretchable display device and a method of manufacturing the same are discussed. The stretchable display device can include a substrate including a rigid area and a soft area, a thin film transistor provided in the rigid area over the substrate, a planarization layer provided over the thin film transistor, a light-emitting element provided over the planarization layer and electrically connected to the thin film transistor, and a stretchable line provided in the soft area over the substrate. The rigid area and the soft area partially overlap each other to thereby form an overlap area, and a distance between adjacent rigid areas is smaller than a length of the soft area.