Stretchable Display Island Substrates and Conductive Particle Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display devices are prone to damage when bent or stretched, particularly in the connecting lines, which can lead to electrical signal disruption due to stress and structural weaknesses.
Innovation Solution
A stretchable display device design featuring island substrates with conductive particles and a base polymer, where the conductive particles are distributed in a density gradient within the base polymer to form connecting lines that can maintain electrical signal transmission even when bent or stretched, and reinforced with conductive members to minimize damage at peak stress areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional rigid substrates are used for display devices, then structural strength is improved, but flexibility and stretchability deteriorate
Solution Approach 1:
The substrate is divided into multiple island substrates that are spaced apart from each other, allowing the display device to be flexible and stretchable while maintaining structural integrity through the distributed island structure
Solution Approach 2:
The patent uses a composite structure combining rigid island substrates with flexible connecting lines containing conductive particles in a base polymer, achieving both strength and flexibility in the overall display device
2Reliability
If connecting lines are made rigid to ensure electrical signal transmission, then electrical conductivity is improved, but resistance to bending and stretching deteriorates
Solution Approach 1:
The connecting lines are formed as flexible structures containing conductive particles distributed in a base polymer, enabling the lines to bend and stretch while maintaining electrical conductivity through the particle-based conductive path
Solution Approach 2:
The patent changes the physical state and distribution parameters of conductive materials by using conductive particles with varying densities in the base polymer, optimizing both flexibility and electrical conductivity of the connecting lines
3Ease of manufacture
If uniform conductive particle distribution is used in connecting lines, then manufacturing simplicity is improved, but electrical conductivity under stress deteriorates
Solution Approach 1:
The conductive particles are distributed with varying densities in different regions of the base polymer, with higher density in areas subject to greater stress, ensuring reliable electrical conductivity where needed while maintaining manufacturing feasibility
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design allows for flexible bending and stretching without significant damage to the connecting lines, ensuring continuous electrical signal transmission and reducing manufacturing costs and process complexity.
Implementation Method 1
a plurality of conductive particles distributed in the base polymer and electrically connecting a plurality of pads disposed on the adjacent island substrates
Implementation Method 2
a plurality of base polymers disposed between adjacent island substrates of the plurality of island substrates
Data Source
AI summary
A stretchable display device comprises a lower substrate; a plurality of island substrates spaced apart from each other and disposed on the lower substrate; a plurality of pixels defined on the plurality of island substrates; a plurality of base polymers disposed between adjacent island substrates of the plurality of island substrates; and a plurality of conductive particles distributed in the base polymer and electrically connecting a plurality of pads disposed on the adjacent island substrates.