Cover Window Resin Layer for Lightweight Impact-Resistant Displays
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Solution Overview
Problem
Conventional display devices with transparent cover windows lack sufficient impact resistance and durability, especially when subjected to external contacts or impacts, and existing manufacturing methods often result in non-uniform thickness and strength issues.
Innovation Solution
A display device with a cover window featuring a transparent protection layer made of UV and/or thermal hardening resin, which extends to the rear surface of the non-transparent area, providing both impact resistance and uniform thickness, and a manufacturing method involving injection and hardening of the resin within a mold to form the protection layer without additional processing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a transparent cover window is made thin and lightweight, then weight is reduced, but impact resistance deteriorates
Solution Approach 1:
The patent applies composite materials by combining the transparent cover window main body with a transparent protection layer made of UV and/or thermal hardening resin. This composite structure allows the cover window to maintain lightweight properties while the added protection layer provides enhanced impact resistance and durability. The resin layer is injected into the rear surface of the non-transparent area, creating a multi-layer composite structure that resolves the contradiction between weight reduction and impact resistance.
2Ease of manufacture
If conventional manufacturing methods are used for the cover window, then production is simple, but thickness uniformity deteriorates
Solution Approach 1:
The patent uses hydraulic injection to form the transparent protection layer. The UV and/or thermal hardening resin is injected into the mold cavity surrounding the cover window main body, allowing the resin to uniformly fill the space and form a protection layer with consistent thickness. This hydraulic injection method maintains manufacturing simplicity while achieving uniform thickness distribution across the protection layer, resolving the contradiction between ease of manufacture and manufacturing precision.
3Strength
If additional processing steps are added to enhance protection, then impact resistance is improved, but device complexity increases
Solution Approach 1:
The patent merges the cover window manufacturing process with the protection layer formation process into a single integrated operation. The transparent protection layer is injected and hardened within the same mold used for the cover window main body, eliminating the need for separate protection layer application and processing steps. This merging of processes enhances impact resistance while avoiding additional processing steps that could introduce cracks or reduce intensity, thus resolving the contradiction between strength improvement and device complexity.
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 solution achieves a lightweight cover window with enhanced impact resistance and uniform thickness, maintaining the structural integrity and allowing for various shapes and designs without compromising strength.
Implementation Method 1
hardening the protection layer formation resin by ultraviolet (UV) radiation and/or heat
Implementation Method 2
The transparent protection layer may be made of an ultraviolet (UV) and/or thermal hardening resin
Data Source
AI summary
A display device has a cover window that is light, has good resistance against external impact, and is capable of being processed with various shapes. A display device according to the present invention includes: a display panel including a display area and a non-display area; and a cover window positioned at the front side of the display panel and including a transparent area corresponding to the display area and a non-transparent area corresponding to the non-display area, wherein the cover window includes a cover window main body formed with the transparent area and the non-transparent area, and a transparent protection layer formed at the front surface of the cover window main body. The transparent protection layer extends to the rear surface corresponding to at least a portion of the non-transparent area of the cover window main body.