Flexible Display Layered Structure for Stretchable Integrity
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Solution Overview
Problem
Existing display apparatuses, particularly flexible and stretchable displays, face challenges in maintaining image quality and structural integrity when subjected to various stretching directions and forces.
Innovation Solution
A flexible display apparatus is designed with a layered structure comprising a first substrate, a second substrate with a light-emitting diode, a planarization insulating layer, a transistor, and a third substrate. This structure allows for efficient light transmission and electrical connectivity while accommodating stretching in multiple directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible display apparatus is designed to be stretchable, then adaptability and flexibility are improved, but structural integrity and image quality deteriorate when subjected to stretching forces
Solution Approach 1:
The display apparatus is divided into multiple independent layers including first substrate, second substrate, planarization insulating layer, transistor layer, and third substrate. Each layer can independently accommodate stretching deformation, preventing structural failure while maintaining overall integrity during stretching operations
Solution Approach 2:
The patent employs flexible substrate materials and thin film structures that can elastically deform under stretching forces. The multi-layer configuration with flexible materials allows the display to stretch while maintaining structural coherence and preventing permanent damage to the display elements
2Adaptability or versatility
If multiple layers are stacked to achieve flexibility, then adaptability is improved, but device complexity increases
Solution Approach 1:
Each layer in the multi-layer structure serves multiple functions: the substrates provide both structural support and flexibility, the planarization insulating layer provides both electrical insulation and surface planarity, and the transistor layer provides both switching functionality and structural integrity. This multi-functionality reduces the need for additional specialized layers
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 proposed display apparatus achieves improved stretchability and reliability by simplifying the manufacturing process and enhancing the structural integrity of the display layers, ensuring consistent image quality across various stretching conditions.
Implementation Method 1
a light-emitting diode at least partially accommodated in the second substrate
Implementation Method 2
each of the first substrate and the second substrate may include a transparent material
Data Source
AI summary
A display apparatus includes a first substrate, a second substrate disposed on the first substrate, a light-emitting diode at least partially accommodated in the second substrate, a first electrode pad disposed on the second substrate and electrically connected to the light-emitting diode, a planarization insulating layer disposed on the second substrate and covering the first electrode pad, a transistor disposed on the planarization insulating layer and electrically connected to the first electrode pad, and a third substrate disposed on the transistor.