Stretchable Display Light Guide Bonding to Prevent Pixel Misalignment
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Solution Overview
Problem
The screen resolution of display devices using fabric layers is easily affected by the weaving method and mesh size of the fabric, leading to secondary misalignment and decreased resolution when the device is stretched.
Innovation Solution
A display device design that includes a stretchable substrate with a display element layer, pixels, and a light guide structure bonded through openings in the display element layer, ensuring the light guide structure remains fixed to the substrate even when deformed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fabric layer is used as the surface of the display device, then the display device can be stretched and has flexibility, but the screen resolution is easily affected by the weaving method and mesh size, leading to secondary misalignment and decreased resolution when stretched
Solution Approach 1:
The display device is divided into multiple layers (substrate, display element layer, light guide structure) with distinct functions. The substrate provides stretchability while the light guide structure maintains optical alignment, segmenting the conflicting requirements of flexibility and precision.
Solution Approach 2:
The light guide structure acts as an intermediary between the stretchable substrate and the display elements. It is bonded to the substrate through openings in the display element layer, mediating the mechanical stress and preventing direct transmission of deformation to the pixels, thus maintaining screen resolution while allowing substrate flexibility.
2Adaptability or versatility
If the display device is stretched, then the flexibility and adaptability are improved, but secondary misalignment between the fabric layer and display device occurs, decreasing screen resolution
Solution Approach 1:
Different parts of the display device have different mechanical properties. The substrate is designed to be stretchable while the light guide structure and display elements maintain structural stability. The bonding through openings creates localized stress distribution that preserves alignment in critical areas while allowing overall device flexibility.
Solution Approach 2:
The display device structure allows dynamic adaptation to stretching forces. The light guide structure remains bonded to the stretchable substrate, enabling the system to dynamically maintain alignment stability during deformation rather than requiring a fixed rigid structure.
3Manufacturing precision
If the light guide structure is bonded to the stretchable substrate through openings in the display element layer, then the screen resolution is maintained during deformation, but the device complexity increases
Solution Approach 1:
The light guide structure bonding integrates multiple functions into a single structural element. The bonding structure serves both as mechanical attachment to the substrate and as a means to maintain alignment stability, combining structural support and precision maintenance functions.
Solution Approach 2:
The light guide structure performs multiple functions: guiding light from the display elements, maintaining alignment during substrate deformation, and providing structural integration between the display layer and substrate. This multi-functionality reduces the need for additional separate components.
Data Source
AI summary
A display device comprises a substrate, a display element layer, a pixel and a light guide structure. The display element layer is disposed on the substrate. The pixel is disposed on the display element layer. The light guide structure is disposed on the display element layer. The substrate is a stretchable substrate, the display element layer comprises a first opening, and the light guide structure is bonded to the substrate through the first opening.