Stretchable Display Layout With Rotated Soft Portions for High PPI
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Solution Overview
Problem
Existing stretchable display devices face limitations in achieving high resolution due to the need for sufficient space in the soft portions to ensure stretching properties and reliability, which restricts the increase in pixel density.
Innovation Solution
A stretchable display device design featuring rigid portions with rotated soft portions and stretchable lines, minimizing the area of the soft portions and utilizing an omega-shaped stretchable line structure to enhance stretching reliability and resolution, allowing for high pixel density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sufficient space is allocated for soft portions to ensure stretching properties and reliability, then stretching reliability is improved, but resolution is limited
Solution Approach 1:
The patent introduces a rotation angle dimension to the arrangement of rigid and soft portions. By rotating the pattern at specific angles (e.g., 45 degrees), the soft portions can be optimized for stretching in multiple directions without increasing their linear dimensions, thereby maintaining high resolution while ensuring stretching reliability.
Solution Approach 2:
The patent employs asymmetric arrangement of rigid and soft portions where the soft portions are strategically positioned and sized differently in various directions. This asymmetric design allows the soft portions to provide sufficient stretching capacity in critical directions while minimizing their overall area to preserve pixel density and resolution.
2Manufacturing precision
If the area of soft portions is reduced to increase pixel density, then resolution is improved, but stretching properties deteriorate
Solution Approach 1:
The patent creates a dynamic balance between rigid and soft portions through rotational arrangement. The soft portions are distributed in a pattern that allows the display to adapt to stretching in multiple directions. This dynamic configuration ensures that even with reduced soft portion area, the stretching properties are maintained through optimal spatial distribution.
Solution Approach 2:
The patent segments the display area into multiple small rigid portions (pixel regions) separated by thin soft portions. This segmentation allows the soft portions to be minimized in area while still providing adequate stretching pathways between pixels, thereby achieving high resolution without compromising stretching capability.
3Manufacturing precision
If rigid portions are arranged densely to increase resolution, then pixel density is improved, but space for soft portions is reduced
Solution Approach 1:
By introducing rotational symmetry and arranging rigid portions at specific angles (e.g., 45-degree rotation), the patent optimizes the spatial relationship between rigid and soft portions. This angular arrangement allows denser packing of rigid portions while maintaining adequate soft portion pathways for stretching, effectively increasing pixel density without sacrificing stretching space.
Solution Approach 2:
The patent applies different spatial characteristics to different regions: rigid portions are densely arranged in the display area for high pixel density, while soft portions are strategically positioned in interstitial regions to provide stretching pathways. This local optimization allows maximum pixel density in display regions while preserving necessary soft portion area for mechanical flexibility.
Data Source
AI summary
A stretchable display device includes a first substrate having thereon a display area and a non-display area adjacent to the display area. The stretchable display device includes a plurality of rigid portions provided in the display area on the first substrate and spaced apart from each other in a first direction and a second direction. The stretchable display device includes a soft portion provided between adjacent rigid portions in the first direction or the second direction. The stretchable display device includes a second substrate disposed over the first substrate. A length of the soft portion is smaller than a length of the rigid portion in a direction. The rigid portion and the soft portion are rotated at a rotation angle with respect to the first direction and the second direction.