Coated Display Window Structure for Lightweight Impact Resistance
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Solution Overview
Problem
Existing mobile electronic device windows lack sufficient impact resistance and structural integrity, especially with the integration of touch panels, requiring improved protection against external impacts and increased contact with fingers.
Innovation Solution
A window structure comprising a base substrate with a first and second coating layer, where the first coating layer is covalently bonded to the substrate and includes methyl T polydimethylsiloxane, and the second coating layer enhances surface hardness, both layers improving impact resistance and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the window uses a simple single-layer structure, then the device complexity is low, but the impact resistance and structural integrity are insufficient
Solution Approach 1:
The window is divided into multiple functional layers: a base substrate, a first coating layer with specific chemical composition (methyl T polydimethylsiloxane, octamethylcyclotetrasiloxane, dimethylsiloxane, melamine resin) applied to the first surface, and a second coating layer applied to the second surface. Each layer serves a specific function in providing impact resistance and structural integrity while maintaining transparency.
Solution Approach 2:
The window employs composite material structure combining different materials with complementary properties. The base substrate provides structural framework, the first coating layer with siloxane and melamine components provides impact absorption and adhesion, and the second coating layer enhances surface hardness and scratch resistance. This composite approach achieves superior overall performance.
2Strength
If the window thickness is increased to improve impact resistance, then the strength is improved, but the weight increases
Solution Approach 1:
Instead of increasing overall window thickness, the invention optimizes the thickness and composition parameters of the coating layers. The first coating layer is formulated with specific ratios of methyl T polydimethylsiloxane, octamethylcyclotetrasiloxane, dimethylsiloxane, and melamine resin to achieve maximum impact resistance at minimal thickness. The second coating layer is optimized for surface hardness. This parameter optimization provides enhanced strength without proportionally increasing weight.
3Strength
If the window uses conventional materials, then the manufacturing cost is low, but the impact resistance and structural integrity are insufficient
Solution Approach 1:
The invention specifies precise compositional parameters for the coating layers, including the chemical composition of the first coating layer (methyl T polydimethylsiloxane, octamethylcyclotetrasiloxane, dimethylsiloxane, melamine resin in specific ratios) and the second coating layer. These parameter specifications ensure consistent performance and facilitate standardized manufacturing processes while achieving superior structural integrity.
4Weight of moving object
If the window is made thinner to reduce weight, then the weight is reduced, but the impact resistance decreases
Solution Approach 1:
The invention compensates for reduced window thickness by optimizing the chemical composition and thickness parameters of the coating layers. The first coating layer with its specific siloxane and melamine formulation provides enhanced impact absorption properties, while the second coating layer maintains surface durability. This allows the window to achieve adequate impact resistance even when made thinner and lighter.
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 window design provides enhanced impact resistance and reduced weight, minimizing breakage and maintaining transparency while reducing yellowing, thus enhancing the durability and performance of mobile devices.
Implementation Method 1
The base substrate and the first coating layer may be covalently bonded to each other
Data Source
AI summary
A window for a display device that includes: a base substrate; a first coating layer disposed on a first surface of the base substrate; and a second coating layer disposed on a second surface that overlaps the first surface of the base substrate, wherein the base substrate further includes a vertical surface perpendicular to the first surface and the second surface, and the first coating layer overlaps the vertical surface. The impact resistance of the window is improved through the first coating layer covering the rear surface and the vertical surface of the base substrate.