Composite Glass Panel Coating for Scratch Resistance and Transmittance
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Solution Overview
Problem
Existing glass panels in terminal devices suffer from limited scratch resistance, easy detachment of protective films, significant color difference, and reduced transmittance due to externally applied protective coatings.
Innovation Solution
A composite film layer with specific structural components, including a first base layer, barrier layers, a diamond-like carbon film layer, and an anti-fingerprint layer, is coated on the glass panel substrate to enhance scratch resistance, adhesion, and maintain optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an externally attached protective film is used to improve scratch resistance, then the scratch resistance capability is improved, but the component cost increases and optical characteristics deteriorate
Solution Approach 1:
The patent merges the protective film function directly into the glass panel substrate by forming a protective layer on the substrate surface during the glass manufacturing process. This integration eliminates the need for separate externally attached protective films, reducing component count and cost while maintaining scratch resistance capability.
Solution Approach 2:
The patent employs composite material structure by combining glass panel substrate with a protective layer formed from specific material compositions. The protective layer is integrated into the glass panel structure, creating a composite system that provides both the base glass functionality and enhanced scratch resistance without requiring separate protective film components.
2Strength
If an externally coated protective film is applied to improve scratch resistance, then the scratch resistance capability is improved, but the adhesion is insufficient causing easy detachment
Solution Approach 1:
The patent applies preliminary action by forming the protective layer on the glass panel substrate during the glass manufacturing process itself, before the glass panel is assembled into the final product. This preliminary formation ensures proper adhesion bonding is established at the source, preventing detachment issues that occur with later externally applied protective films.
Solution Approach 2:
The patent uses an intermediary approach by incorporating a specific protective layer material that acts as a mediator between the glass substrate and external scratch resistance requirements. This intermediary layer is chemically and physically bonded to the substrate during manufacturing, creating a reliable adhesive connection that prevents detachment.
3Strength
If an externally coated protective film is used to improve scratch resistance, then the scratch resistance capability is improved, but significant color difference and transmittance reduction occur
Solution Approach 1:
The patent applies parameter changes by carefully controlling the thickness, material composition, and optical properties of the protective layer during the glass manufacturing process. By optimizing these parameters, the protective layer provides scratch resistance while minimizing optical interference and maintaining high transmittance, avoiding the color difference and transmittance reduction associated with thicker externally applied films.
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 composite film layer improves Mohs hardness, reduces color difference, and maintains high transmittance, ensuring long-term reliability and improved user experience.
Implementation Method 1
a diamond-like carbon film layer, a second barrier layer, a second base layer, and an anti-fingerprint layer that are sequentially stacked
Implementation Method 2
the composite film layer has strong adhesion to the surface of the substrate and is not easily detached
Data Source
AI summary
A glass panel is provided, including a glass panel substrate and a composite film layer disposed on a surface of the glass panel substrate. The composite film layer includes a first base layer, a first barrier layer, a diamond-like carbon film layer, a second barrier layer, a second base layer, and an anti-fingerprint layer that are sequentially stacked. The glass panel is coated with the composite film layer having a specific structure on the surface of the glass panel substrate, so that the glass panel can have high Mohs hardness, to improve a scratch resistance capability of the glass panel. In addition, the composite film layer has strong adhesion to the surface of the substrate and is not easily detached. The composite film layer can further reduce a color difference before and after coating to a specific extent, and increase transmittance.