Stretchable Display Panel Curved Conducting Wires
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Solution Overview
Problem
Current OLED flexible displays cannot achieve spherical bending or stretching deformation, limiting their application to only specific types of deformation.
Innovation Solution
A stretchable display panel design with pixel regions and stretchable regions, where conducting wires connecting adjacent pixel regions have a length greater than the distance between them, allowing for significant deformation without damaging the display characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conducting wires are arranged straight between adjacent pixel regions, then the display structure is simple and manufacturing is easy, but the display panel cannot achieve stretching deformation without damaging the conducting wires
Solution Approach 1:
The conducting wire is designed with a curved path including a protrusion portion that extends in the second direction (vertical direction) between adjacent pixel regions. This curved configuration allows the wire to accommodate stretching deformation of the display panel without breaking, as the curvature provides mechanical compliance. The protrusion portion acts as a buffer that can deform elastically during stretching while maintaining electrical connectivity.
Solution Approach 2:
Instead of arranging the conducting wire solely in the horizontal direction between pixel regions, the wire extends into the vertical dimension by creating a protrusion portion. This three-dimensional wire layout allows the display panel to stretch in the horizontal direction while the vertical protrusion absorbs the mechanical stress, enabling deformation capability without compromising wire integrity.
2Adaptability or versatility
If the conducting wire length is increased to accommodate deformation, then the panel can deform without damaging wires, but the distance between pixel regions increases affecting display resolution
Solution Approach 1:
The conducting wire follows a curved path with a protrusion that extends vertically between pixel regions. This curvature allows the wire length to be greater than the horizontal distance between pixel regions, providing mechanical compliance for deformation while maintaining compact horizontal spacing that preserves display resolution and manufacturing precision.
Solution Approach 2:
The conducting wire is designed as a flexible structure that can bend and deform elastically. The protrusion portion acts as a flexible buffer zone that can stretch and retract, allowing the wire to accommodate panel deformation without requiring excessive wire length that would compromise pixel spacing and display resolution.
3Adaptability or versatility
If OLED flexible displays are designed for bending, then they achieve bendability, but they cannot achieve stretching or spherical bending deformation
Solution Approach 1:
The conducting wire is designed with a curved protrusion configuration that can accommodate various deformation modes including stretching and spherical bending. The curved geometry provides mechanical compliance that allows the display panel to undergo complex three-dimensional deformations while maintaining electrical connectivity and display quality, going beyond simple bending capability.
Solution Approach 2:
The conducting wire structure is designed to be dynamically adaptable to different deformation states. The protrusion portion can elastically deform in response to stretching forces, and the wire can return to its original configuration when the force is removed. This dynamic response allows the display to maintain reliability across multiple deformation cycles and various deformation types.
Data Source
AI summary
A stretchable display panel, a manufacturing method of the stretchable display panel and a stretchable display apparatus are provided. The manufacturing method of the stretchable display panel includes: providing a first substrate; defining a plurality of pixel regions and a plurality of stretchable regions in the first substrate; each stretchable region being located between two adjacent pixel regions; forming a pixel device in each pixel region, and forming a conducting wire connecting two adjacent pixel regions in each stretchable region; wherein a length of the conducting wire is greater than a distance between two adjacent pixel regions. In this way, the stretchable display panel may achieve a great amount of deformation, and the display panel can be bent conveniently.