Flexible Display Support Plate Adhesion for Folding and Sliding
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Solution Overview
Problem
In flexible display apparatuses, the support plate with slits formed in it may not adhere securely to the display panel, leading to reliability issues.
Innovation Solution
A display apparatus design featuring a support plate with a main adhesive layer and auxiliary adhesive layers, where the adhesive force between the auxiliary adhesive layers and the grid pattern portions is greater than that of the main adhesive layer, and the adhesive layers are formed from materials with varying concentrations of isobornyl acrylate, ensuring secure adhesion and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If slits are formed in the support plate to enable folding and sliding, then flexibility and adaptability are improved, but adhesion strength deteriorates
Solution Approach 1:
The support plate is divided into different regions with distinct adhesive properties: grid pattern portions with enhanced adhesion (through auxiliary adhesive layers or material composition changes) and non-grid portions with standard adhesion. This local differentiation allows the grid areas to maintain strong bonding despite slit formations, while other areas provide overall structural support.
Solution Approach 2:
The adhesive system uses composite adhesive layers with different material compositions. The auxiliary adhesive layer contains different polymer components or additives compared to the main adhesive layer, creating a multi-layer composite structure that provides both flexibility for folding/sliding and sufficient adhesion strength to prevent detachment.
2Reliability
If adhesive layers are added to improve adhesion, then reliability is improved, but device complexity increases
Solution Approach 1:
Instead of uniformly increasing adhesive complexity across the entire support plate, the auxiliary adhesive layer is applied only to specific grid pattern portions where enhanced adhesion is needed. This localized approach improves reliability at critical bonding areas without unnecessarily complicating the entire adhesive system.
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
Enhances the reliability and durability of the display apparatus by maintaining secure adhesion between the support plate and display panel, allowing for folding and sliding operations without detachment.
Implementation Method 1
the main adhesive layer may be a hardened product of a first adhesive layer forming material, the auxiliary adhesive layer may be a hardened product of a second adhesive layer forming material
Data Source
AI summary
Provided are a display apparatus and a method of manufacturing the display apparatus, the display apparatus including a display panel including a first area, a second area, a folding area between the first area and the second area, and a sliding area across the first area from the folding area, a support plate supporting a lower surface of the display panel and including a first plate portion overlapping the first area, a second plate portion overlapping the second area, a first grid pattern portion overlapping the folding area, and a second grid pattern portion overlapping the sliding area, a main adhesive layer between the display panel and the support plate, and an auxiliary adhesive layer between the main adhesive layer and the support plate and overlapping a portion of the support plate.