Flexible Display Inorganic Embossed Layer Force Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display devices face challenges in achieving a balance between flexibility and durability, particularly in withstanding external pressures and impacts without cracking, due to their rigid structures and limited design options for diverse applications.
Innovation Solution
A flexible display device structure is developed, featuring a substrate with a first and second plastic layer, an inorganic embossed layer with mountain and valley parts, an organic layer, an inorganic buffer layer, a thin film transistor, and a display element, along with a metal pattern layer and additional inorganic layers, which distribute external forces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid structure is used in display devices, then durability and resistance to cracking are improved, but flexibility and adaptability to diverse applications deteriorate
Solution Approach 1:
The inorganic layer is segmented into multiple discrete inorganic particles distributed within the organic layers, rather than forming a continuous rigid structure. This segmentation allows the display device to maintain durability through the distributed inorganic reinforcement while preserving flexibility as the individual particles can move independently during bending
Solution Approach 2:
The patent creates a composite structure combining organic layers (providing flexibility) with dispersed inorganic particles (providing durability and crack resistance). This composite approach allows both materials to contribute their advantageous properties simultaneously, resolving the contradiction between flexibility and durability
2Adaptability or versatility
If a flexible structure is used in display devices, then adaptability and diverse design options are improved, but resistance to external pressures and impacts deteriorates
Solution Approach 1:
The inorganic particles are selectively distributed within specific regions of the organic layers, creating local areas of enhanced strength and pressure resistance while maintaining overall device flexibility. The local reinforcement occurs where inorganic particles are concentrated, without compromising the global flexible behavior
3Reliability
If a continuous inorganic layer is used, then barrier properties and durability are improved, but flexibility and stress distribution deteriorate
Solution Approach 1:
The continuous inorganic layer is replaced with discrete inorganic particles distributed throughout the organic layers. This segmentation maintains barrier properties by providing multiple obstruction points for moisture and oxygen penetration while allowing the organic matrix to flex without restriction
Solution Approach 2:
The patent uses thin organic layers containing inorganic particles as a flexible barrier structure. The organic matrix acts as a flexible shell that maintains barrier functionality through the dispersed inorganic reinforcement without requiring rigid continuous inorganic layers
Data Source
AI summary
A display device includes a substrate comprising a first plastic layer, a second plastic layer on the first plastic layer, and an inorganic layer between the first plastic layer and the second plastic layer, an inorganic embossed layer on the substrate and comprising a plurality of mountain parts, an organic layer on the inorganic embossed layer, an inorganic buffer layer on the organic layer, a thin film transistor on the inorganic buffer layer, and a display element electrically connected to the thin film transistor.