Colored Layer Composition for Durable Curved Glass Substrates
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Solution Overview
Problem
Existing methods for forming a colored layer on curved glass substrates using a transfer decoration method face durability issues, particularly in display devices with complex shapes.
Innovation Solution
A colored layer-attached glass substrate is developed, comprising a glass substrate with a colored layer containing a cured resin, a non-curable resin, and a curing agent, where the curing agent is a thermal curing agent, and the colored layer includes specific components like blocked isocyanate and tackifiers, with a thickness of 5 µm to 20 µm and a non-cured component content between 5 mass% and 40 mass%, ensuring no air bubbles and a smooth curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a colored layer is formed by using the transfer decoration method on a curved glass substrate, then the display can accommodate more complicated shapes and improve visibility and designability, but the durability of the formed colored layer deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the colored layer by incorporating specific ratios of curable resin (5-50 mass%), non-curable resin (50-95 mass%), and colorants (1-20 mass%). This compositional parameter change enables the colored layer to maintain durability while being formed on complicated curved surfaces using the transfer decoration method.
Solution Approach 2:
The patent creates a composite material system by combining curable resin, non-curable resin, and colorants in specific proportions. The curable resin provides durability and adhesion when cured, the non-curable resin maintains flexibility and transferability, and the colorants provide the light-shielding function. This composite approach resolves the contradiction between durability and adaptability to complicated shapes.
2Reliability
If the colored layer contains high content of curable resin to improve durability, then the adhesion and durability of the colored layer improve, but the flexibility and ease of transfer deteriorate
Solution Approach 1:
The patent optimizes the parameter range of curable resin content to 5-50 mass% of the total colored layer composition. Within this parameter range, the colored layer achieves sufficient adhesion and durability after curing while maintaining enough flexibility during the transfer process. This parameter optimization resolves the contradiction between durability and ease of transfer.
Solution Approach 2:
The patent applies different functional properties to different portions of the colored layer composition: the curable resin portion (5-50 mass%) provides local durability and adhesion properties, while the non-curable resin portion (50-95 mass%) provides local flexibility and transferability. This local quality differentiation allows the material to exhibit both durability and ease of transfer at different stages of the process.
3Illumination intensity
If the colored layer is made thinner to improve transparency and aesthetics, then the visual appearance and transparency improve, but the light-shielding performance and durability deteriorate
Solution Approach 1:
The patent uses a composite material system where colorants (1-20 mass%) provide light-shielding function, curable resin (5-50 mass%) provides durability, and non-curable resin provides flexibility. This composite approach allows thin layers to maintain both transparency/aesthetics and light-shielding performance/durability through optimized material composition rather than relying solely on thickness.
Solution Approach 2:
The patent changes the concentration parameter of colorants to 1-20 mass% within the colored layer composition. This concentration optimization allows the colored layer to achieve sufficient light-shielding performance even at thin thicknesses, thereby maintaining both transparency/aesthetics and light-shielding durability without relying on increased thickness.
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 provides a colored layer with enhanced durability and adhesion, suitable for curved surfaces, improving visibility and designability in display devices by shielding wiring and enhancing aesthetics.
Implementation Method 1
the curing agent is a thermal curing agent or a photocuring agent
Implementation Method 2
the curing agent is a thermal curing agent or a photocuring agent
Implementation Method 3
the curing agent contains a blocked isocyanate
Implementation Method 4
the non-curable resin contains a tackifier
Data Source
Figure 1~2B
Figure 2C~3
Figure 4
AI summary
The present invention provides a colored layer-equipped glass substrate that includes: a glass substrate having a main surface; and a colored layer disposed contacting the main surface. The colored layer includes: a colorant; a cured resin; and a non-curable resin. Furthermore, the present invention provides a method for manufacturing a colored layer-equipped glass substrate which includes a glass substrate having a main surface, and a colored layer disposed contacting the main surface, the method including: preparing a glass substrate having a main surface; preparing a transfer member having a transfer base material and a colored layer precursor film; laminating the transfer member on the glass substrate such that the main surface of the glass substrate and the colored layer precursor film contact each other; and forming the colored layer by curing the colored layer precursor film disposed contacting the main surface of the glass substrate. The colored layer precursor film includes: a colorant; a curable resin; and a non-curable resin.