Dual-Layer Cover Glass Structure for Impact-Resistant Displays
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Solution Overview
Problem
Existing display devices face challenges in efficiently protecting the display panel from impact while maintaining aesthetic appeal and reducing manufacturing costs, particularly due to the complexity and cost associated with thick protective cover plates and the need for custom glass panels.
Innovation Solution
A dual-layer protective cover plate structure with a thicker first cover plate and thinner second cover plate, combined with bonding layers, to absorb impact forces and simplify manufacturing by eliminating the need for custom glass panels and complex cutting processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick protective cover plate is used to protect the display panel from impact, then impact resistance is improved, but manufacturing cost increases and manufacturing complexity increases due to the need for custom glass panels
Solution Approach 1:
The protective cover plate is divided into two separate layers: a first protective cover plate and a second protective cover plate. This segmentation allows each layer to be thinner and easier to manufacture while collectively providing the required impact resistance. The first protective cover plate has a first thickness and the second protective cover plate has a second thickness, where the sum of both thicknesses provides adequate protection without requiring a single thick custom glass panel.
Solution Approach 2:
The patent uses a composite structure combining two different protective cover plates with different thicknesses and potentially different materials, bonded together via a bonding layer. This composite approach optimizes both protection performance and manufacturability, allowing the use of standard glass panels rather than custom thick glass, thereby reducing cost while maintaining strength.
2Strength
If a thick protective cover plate is used to protect the display panel from impact, then impact resistance is improved, but device complexity increases due to complex cutting processes
Solution Approach 1:
By dividing the protective cover into two separate plates, each can be manufactured using standard sizes and shapes without requiring complex custom cutting. The bonding layer joins these simpler components together, reducing overall manufacturing process complexity compared to creating a single thick custom glass panel with complex cutouts.
Solution Approach 2:
A bonding layer is introduced as an intermediary element between the first protective cover plate and the second protective cover plate. This bonding layer simplifies the manufacturing process by providing a straightforward joining method rather than requiring complex integrated cutting and shaping of a single thick glass panel.
3Strength
If a single thick protective cover plate is used, then impact resistance is improved, but aesthetic appeal deteriorates due to the bulky appearance
Solution Approach 1:
The protective cover is segmented into two thinner plates rather than one thick plate. This segmentation allows the overall structure to maintain adequate impact resistance while presenting a thinner, more aesthetically pleasing profile from the front, avoiding the bulky appearance associated with single thick glass panels.
Solution Approach 2:
The first protective cover plate and second protective cover plate can have different local properties including different thicknesses. The first protective cover plate has a first thickness and the second has a second thickness, allowing optimization of both appearance (thinner visible profile) and protection (adequate total thickness) simultaneously.
Data Source
AI summary
A display device is provided. The display device includes: a first protective cover plate, a second protective cover plate, a first bonding layer, and a display panel; wherein the first bonding layer is disposed between the first protective cover plate and the second protective cover plate and is bonded to the first protective cover plate and the second protective cover plate; and the display panel is disposed on one side of the second protective cover plate distal to the first protective cover plate, and a light-emergent side of the display panel faces the second protective cover plate; wherein a thickness of the first protective cover plate is greater than a thickness of the second protective cover plate.