Allyl Ester Resin Light Control Panel with Metal Film Layers
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Solution Overview
Problem
Existing transparent plastic substrates for light control panels lack sufficient surface hardness and strength, making them prone to flaws and breakage, while glass alternatives are heavy and brittle.
Innovation Solution
A light control panel using a cured product of a specific allyl ester resin composition with alternately laminated metal film layers, providing enhanced transparency, surface hardness, and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If plastic substrate is used to replace glass, then the substrate becomes lightweight and break-resistant, but the surface hardness decreases making it more liable to be flawed
Solution Approach 1:
The patent applies composite materials by forming a metal oxide film (such as indium tin oxide, zinc oxide, or silicon oxide) on the plastic substrate surface. This creates a composite structure where the plastic substrate provides lightweight and break-resistant properties, while the metal oxide film layer provides high surface hardness and scratch resistance, thereby resolving the contradiction between break resistance and surface hardness.
Solution Approach 2:
The patent changes the surface properties of the plastic substrate by depositing a metal oxide film, which fundamentally alters the surface hardness parameter without changing the bulk properties of the plastic substrate. This allows the substrate to maintain its inherent lightweight and flexible characteristics while achieving glass-like surface hardness through the film layer.
2Adaptability or versatility
If metal or metal oxide film is formed on plastic substrate, then conductivity and reflecting function are imparted, but the substrate becomes more complex in structure
Solution Approach 1:
The patent applies multi-functionality by using metal oxide films that can simultaneously provide multiple functions: electrical conductivity (for touch panel operation), reflecting function (for optical imaging), and surface hardness enhancement. This single film layer serves multiple purposes, reducing the need for separate functional layers and thereby simplifying the overall structure despite the enhanced functionality.
3Stress or pressure
If acrylic resin with crosslinked structure is used, then surface hardness is increased, but the substrate becomes brittle and liable to break
Solution Approach 1:
The patent resolves this contradiction by creating a composite structure where the acrylic resin substrate maintains its inherent toughness and flexibility, while a metal oxide film layer is deposited on the surface to provide the required surface hardness. This separation of functions allows the bulk material to provide impact resistance while the surface film provides scratch resistance, avoiding the brittleness issue of fully crosslinked acrylic resins.
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 allyl ester resin composition with metal film layers achieves high surface hardness, strength, and optical performance, reducing the likelihood of flaws and breakage while maintaining lightness, thus being suitable for light control panels and optical imaging devices.
Implementation Method 1
band-shaped planar light-reflecting portions arranged vertically and at a constant pitch on a surface on one side... metal reflecting surfaces formed on its surfaces on both sides
Implementation Method 2
an acrylic curable resin can be increased in surface hardness because the resin has a crosslinked structure... cured product of a specific allyl ester resin composition
Data Source
Figure 1~2
AI summary
The present invention provides a light control panel, including a plurality of band-shaped planar light-reflecting portions in each of which layers of a curedproduct of an allyl ester resin composition, which curedproduct is excellent in optical characteristics, surface hardness and strength, and metal film layers are alternately laminated in a plane direction (direction vertical to a thickness). The allyl ester resin composition preferably contains an allyl ester oligomer having a group represented by the formula (2) as a terminal group, and having a structure represented by the formula (3) as a structural unit (the symbols in formulae (2) and (3) have the same meanings as those described in the description).