Flexible Display Plate-like Inorganic Layer Adhesive Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in achieving flexibility and maintaining structural integrity, particularly in the manufacturing process, where the removal of a carrier substrate without damaging the flexible base is difficult, and the use of polymeric materials can lead to thermal instability and defects.
Innovation Solution
A display device is manufactured using a plate-like inorganic layer with specific particle sizes and compositions, including graphene oxide particles, which are applied in a multilayer structure on the base to provide a stable and flexible substrate, allowing for mechanical lifting off of the carrier substrate without damage and minimizing adhesive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a polymeric material is used as a temporary adhesive layer, then ease of manufacture is improved, but thermal stability deteriorates causing defects during heat treatment
Solution Approach 1:
The patent changes the material parameter from polymeric to inorganic particles, fundamentally altering the thermal properties to withstand heat treatment temperatures while maintaining adhesive functionality during the manufacturing process
Solution Approach 2:
The patent uses composite inorganic particles comprising multiple components (e.g., metal oxide core with shell structure) to achieve both adhesive properties and thermal stability, combining different material characteristics in a single functional layer
2Manufacturing precision
If a carrier substrate is used to support the base, then manufacturing precision is improved, but adhesive force increases making mechanical lifting off difficult
Solution Approach 1:
The patent applies local quality by creating a temporary adhesive layer with specific spatial characteristics - it provides strong adhesion during manufacturing but is designed to be selectively removable, with different regions or properties optimized for different stages of the process
Solution Approach 2:
The temporary adhesive layer acts as an intermediary between the carrier substrate and the base, providing the necessary bonding during manufacturing while being designed to facilitate clean separation afterward, mediating between the need for strong attachment and easy release
3Adaptability or versatility
If a flexible base is used to enable flexibility, then adaptability is improved, but structural integrity deteriorates making it prone to damage during manufacturing
Solution Approach 1:
The patent applies beforehand cushioning by providing a carrier substrate that supports the flexible base during the manufacturing process, preventing damage before it can occur, and the temporary adhesive layer is applied in advance to ensure proper positioning and protection throughout subsequent processing steps
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 method enables the stable formation of driving element and light emitting devices on a flexible base while reducing the adhesive force between the carrier substrate and the base, preventing defects and thermal issues, and allowing for efficient mechanical lifting off during manufacturing.
Implementation Method 1
A plate-like inorganic layer including plate-like inorganic particles having different sizes is formed on the other surface of the base to minimize an adhesive force between the carrier substrate and the base
Implementation Method 2
the use of polymeric materials can lead to thermal instability and defects
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A display device includes a base, a light emitting device on a first surface of the base, and a plate-like inorganic layer on a second surface of the base, the plate-like inorganic layer including a first plate-like inorganic particle with a first size and a second plate-like inorganic particle with a second size different from the first size.