Vehicle Window Glass Coating to Reduce Ceramic Layer Stress
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Solution Overview
Problem
The formation of a ceramic color layer on vehicle window glass leads to a decrease in strength due to stress concentration caused by surface roughness, which existing technologies have not effectively addressed.
Innovation Solution
A window glass design where a ceramic color layer is applied with an organic ink layer covering at least a partial region, smoothing the surface and alleviating stress concentration, thereby maintaining the glass's strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ceramic color layer is formed on the glass plate, then the adhesive is protected from ultraviolet deterioration and the design is improved, but the strength of the window glass decreases due to stress concentration from surface roughness
Solution Approach 1:
An organic ink layer is introduced as an intermediary between the ceramic color layer and the external environment. This organic ink layer has smooth surface properties that mediate the stress distribution, preventing stress concentration while allowing the ceramic color layer to maintain its protective and aesthetic functions.
Solution Approach 2:
The patent applies local quality by creating a dual-layer structure where the ceramic color layer provides UV protection and design features in specific regions, while the organic ink layer provides smooth surface characteristics and stress distribution. Each layer has localized properties optimized for its specific function.
2Reliability
If a ceramic color layer is formed on the glass plate, then the adhesive is protected from ultraviolet deterioration, but the surface roughness causes stress concentration and strength decrease
Solution Approach 1:
The patent creates a composite material structure combining ceramic color layer and organic ink layer. The ceramic color layer provides UV protection and design features, while the organic ink layer provides smooth surface properties. The composite structure integrates the beneficial properties of both materials to achieve both protection and strength.
3Reliability
If the ceramic color layer has a rough surface, then the adhesive protection function is maintained, but the stress concentration reduces the window glass strength
Solution Approach 1:
The patent segments the protective coating into two distinct layers: the ceramic color layer that provides UV protection and design features, and the organic ink layer that provides smooth surface properties. This segmentation allows each layer to independently optimize its specific function without compromising the other.
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 organic ink layer effectively reduces surface roughness and prevents a decrease in strength by smoothing the ceramic color layer, enhancing the static load strength of the window glass.
Implementation Method 1
when at least a partial region on the ceramic color layer is covered with an organic ink layer, the surface thereof is smoothed, the stress concentration is alleviated
Data Source
AI summary
A window glass for a vehicle includes: a glass plate having a first main surface and a second main surface; a ceramic color layer, and an organic ink layer, in which the ceramic color layer is provided at least in a periphery on the first main surface of the glass plate, the organic ink layer is provided to cover at least a partial region on the ceramic color layer provided in the periphery, and a thickness of the organic ink layer is smaller than a thickness of the ceramic color layer.