Stretchable Display Sub-pixel Compensation for Resolution Maintenance
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Solution Overview
Problem
Existing stretchable displays face challenges in maintaining high resolution when stretched, due to the inclusion of a significant connecting part and varying stretching rates on curved surfaces, leading to decreased resolution and inconsistent performance across different positions.
Innovation Solution
A stretchable display design featuring a substrate with cutouts and bridges that allow for even stretching without distorting pixel shapes, incorporating main pixels and sub-pixels to maintain resolution, and using sensing lines to detect distortion and adjust image data accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a flexible panel is hidden in the display panel to enable stretching, then the display area can be extended, but the resolution decreases due to the significant connecting part region
Solution Approach 1:
The substrate is divided into multiple isolated islands separated by cutouts, with each island containing pixels. This segmentation allows the substrate to stretch while keeping pixel shapes intact on each island, preventing distortion and maintaining resolution across the expanded display area.
2Adaptability or versatility
If the display is disposed on a curved surface, then the display can be stretched to fit the surface, but different stretching rates at different positions cause varying resolution
Solution Approach 1:
Sensing lines are embedded in the substrate to detect stretching rates at different positions. The controller receives this feedback information and adjusts the image data accordingly, compensating for resolution variations caused by different stretching rates on curved surfaces and maintaining consistent display quality.
3Manufacturing precision
If sensing lines are added to detect distortion, then resolution can be maintained through compensation, but the device complexity increases
Solution Approach 1:
The sensing lines serve multiple functions: they detect stretching rates, provide feedback to the controller, and enable resolution compensation. This multi-functionality allows the system to maintain high resolution without adding separate dedicated sensing mechanisms, thereby limiting the increase in device complexity.
Data Source
AI summary
A stretchable display includes: a stretchable substrate including first areas and second areas; main pixels disposed on the first areas of the stretchable substrate, the main pixels configured to display different colors; and at least one sub-pixel disposed on the second areas of the stretchable substrate, the at least one sub-pixel being configured to display one color that is the same as any one of the main pixels, wherein the sub-pixel is configured to turn on in response to the stretchable substrate being stretched.