Curable Composition Adhesion Liquid Crystal Orientation
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Solution Overview
Problem
Existing adhesive compositions for liquid crystal displays, particularly in 3D display devices, face challenges in simultaneously achieving adhesion and liquid crystal orientation, which is crucial for devices like auto-stereoscopic 3D displays.
Innovation Solution
A curable composition comprising an epoxy compound, such as bisphenol A or F type epoxy resin, combined with bisphenol type (meth)acrylate, which provides adhesion and liquid crystal orientation ability before or after curing, along with optional phenoxy resin and curing agents, to form a robust adhesive layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a separate alignment layer and adhesive layer are used, then liquid crystal orientation ability is improved, but device complexity increases
Solution Approach 1:
The patent combines the alignment layer and adhesive layer into a single integrated layer that simultaneously provides both liquid crystal orientation ability and adhesion to the lens array substrate. This is achieved by formulating a curable composition containing both alignment-inducing agents and adhesive components, eliminating the need for separate layers and simplifying the device structure.
Solution Approach 2:
The curable composition is designed to perform multiple functions simultaneously: it provides adhesion to the lens array substrate, enables liquid crystal orientation, and forms a robust adhesive layer. This multi-functional material replaces what would traditionally require separate specialized layers, reducing device complexity while maintaining performance.
2Reliability
If adhesion performance is enhanced, then reliability is improved, but liquid crystal orientation ability may deteriorate
Solution Approach 1:
The patent adjusts the chemical composition parameters of the curable composition to achieve optimal balance between adhesion and orientation. By selecting specific epoxy compounds with appropriate molecular weights and structures, and controlling the ratio of adhesive components to alignment-inducing components, the composition achieves both strong adhesion and effective liquid crystal orientation simultaneously.
Solution Approach 2:
The curable composition is formulated as a composite material containing multiple functional components: epoxy compounds for adhesion, alignment-inducing agents for liquid crystal orientation, and curing agents. This composite approach allows the single layer to deliver both robust adhesion performance and liquid crystal orientation ability without compromising either function.
3Device complexity
If a single layer provides both adhesion and orientation, then device complexity is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The curable composition is pre-formulated with optimized ratios of adhesive components and alignment-inducing agents, along with selected epoxy compounds of specific molecular weights. This preliminary preparation of the composition ensures that when applied and cured, it automatically achieves both adhesion and orientation functions with consistent performance, reducing the need for post-processing adjustments and simplifying manufacturing precision requirements.
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 curable composition effectively imparts both adhesion and liquid crystal orientation ability, enhancing the performance of optical devices like auto-stereoscopic 3D displays by ensuring proper liquid crystal alignment and strong attachment to lens structures.
Implementation Method 1
The curable composition of the present application comprises an epoxy compound and a bisphenol type (meth)acrylate
Data Source
AI summary
The present application relates to a curable composition. The curable composition of the present application exhibits excellent adhesion ability and liquid crystal orientation ability simultaneously before or after curing, so that it can be effectively applied to various optical uses.