Silane-Modified Epoxy Resin for LCD Protective Film Adhesion
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Solution Overview
Problem
The development of a thermally curable resin composition for protective films in liquid crystal display devices is challenged by the need to balance film strength and adhesive strength, as these properties are inversely proportional, and existing compositions struggle to maintain both effectively, especially with increasing LCD sizes.
Innovation Solution
Incorporating an alkoxy group-containing silane-modified epoxy resin in the thermally curable resin composition, which reacts with a binder resin to form chemical bonds with substrates, enhancing adhesive strength while maintaining film strength through a specific weight ratio and molecular weight range of the epoxy resin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the strength of the protective film is increased, then the film strength is improved, but the adhesive strength decreases
Solution Approach 1:
The patent changes the chemical composition parameters of the resin system by incorporating silane-modified epoxy resin with specific alkoxy groups. This modification alters the curing behavior and molecular structure of the protective film, enabling simultaneous achievement of high film strength and adhesive strength through controlled chemical reactions during thermal curing
Solution Approach 2:
The patent uses a composite resin system combining silane-modified epoxy resin with other compatible resins and additives. This composite formulation creates a multi-functional material that exhibits both high mechanical strength for film integrity and enhanced adhesion to substrates, resolving the inverse relationship between film strength and adhesive strength
2Area of stationary object
If the LCD area is increased, then the display size is improved, but the adhesive strength and film strength become difficult to maintain
Solution Approach 1:
The patent modifies the resin composition parameters specifically to address large-area applications. The silane-modified epoxy resin provides enhanced cross-linking density and chemical stability that maintains adhesive strength across extended substrate areas, preventing the degradation typically observed in large-scale displays
3Area of stationary object
If the LCD area is increased, then the display size is improved, but the film strength becomes difficult to maintain
Solution Approach 1:
The patent employs a composite resin formulation with silane-modified epoxy as a key component. This composite material provides uniform mechanical properties across large areas, maintaining film strength through enhanced cross-linking networks that prevent weak spot formation in extended display areas
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 use of alkoxy group-containing silane-modified epoxy resin in the thermally curable resin composition achieves improved adhesive strength and film strength, ensuring the protective film's durability and compatibility with substrates, even in large area LCDs.
Implementation Method 1
reacts with a binder resin to form chemical bonds with substrates
Data Source
AI summary
The present invention relates to a thermally curable resin composition for a protective film including an alkoxy group-containing silane-modified epoxy resin as an essential component, a protective film of a color filter prepared from the same, and a liquid crystal display device including the same. The thermally curable resin composition for a protective film of the present invention includes an alkoxy group-containing silane-modified epoxy resin as an essential component to have excellent film strength and adhesive strength, and thus may be effectively used in a protective film of a color filter for a liquid crystal display device.