Flexible Display Window Structure With Full-Surface Resin Protection
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Solution Overview
Problem
Flexible display devices face challenges in maintaining product reliability due to the need for improved structural integrity and protection against external impacts, especially when folded or bent.
Innovation Solution
A display device design incorporating a glass substrate with a resin layer covering its top, bottom, and side surfaces, and a window protective layer, along with a fingerprint-resistant layer, to enhance structural strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a glass substrate is used in flexible display devices, then structural strength and durability are improved, but flexibility and resistance to external impacts during folding or bending deteriorate
Solution Approach 1:
The patent applies composite materials by combining a glass substrate with a resin layer to create a window structure that integrates the strength of glass with the flexibility and impact absorption of resin. The resin layer is formed to cover the entire surface of the glass substrate, creating a composite structure that maintains structural integrity while enabling flexibility for folding display devices.
Solution Approach 2:
The patent uses a resin layer as a flexible shell that covers the glass substrate. This resin layer acts as a protective film that allows the rigid glass substrate to be integrated into a flexible display device, enabling folding and bending while maintaining protection against external impacts.
2Reliability
If the resin layer completely covers the glass substrate including side surfaces, then protection against external impacts is improved, but manufacturing complexity increases
Solution Approach 1:
The patent extends the protection from two dimensions (top and bottom surfaces) to three dimensions by having the resin layer cover the side surfaces of the glass substrate as well. This dimensional extension ensures complete coverage and protection against external impacts from all directions, while the resin's fluidity during manufacturing facilitates this comprehensive coverage.
Solution Approach 2:
The resin layer acts as a cushioning layer that is applied beforehand to the glass substrate. This layer provides prior protection against external impacts by absorbing and distributing impact forces across the entire surface and edges of the glass substrate, preventing direct contact between external objects and the glass.
3Reliability
If multiple resin layers are used to cover different surfaces, then comprehensive protection is improved, but device complexity and manufacturing steps increase
Solution Approach 1:
The patent merges the protection function into a single integrated resin layer that simultaneously covers the top surface, bottom surface, and side surfaces of the glass substrate. This unified approach consolidates multiple protective functions into one layer, reducing the number of separate manufacturing steps while achieving comprehensive protection.
Solution Approach 2:
The resin layer serves multiple functions simultaneously: it protects the top surface, bottom surface, and side surfaces; provides impact absorption; enables flexibility for folding; and acts as an adhesive bonding layer. This multi-functionality eliminates the need for separate layers for each function, simplifying the overall structure and manufacturing process.
Data Source
AI summary
A display device includes a display panel and a window disposed on the display panel. The window includes a glass substrate including a top surface, a bottom surface facing the top surface in a thickness direction, and a side surface that is extended to the top surface and the bottom surface, a resin layer that covers an entirety of the top surface, the bottom surface, and the side surface of the glass substrate, and a window protective layer disposed on the resin layer.