Composite Polarizer with Dual Dichroic Array Structures
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Solution Overview
Problem
Current polarizers for image display devices have limitations in achieving a high degree of alignment, which affects the performance of these devices, as they often require different devices and production processes for various optical functions such as attenuation, polarization, and light shielding.
Innovation Solution
A polarizer formed from a composition containing a liquid crystal compound, a first dichroic material, and a second dichroic material, with specific array structures and crystal structures for each dichroic material, optimizing their alignment and absorption wavelengths to enhance the polarizer's performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a polarizer uses traditional materials like iodine or single dichroic materials, then the production process is simpler, but the degree of alignment is insufficient and performance is limited
Solution Approach 1:
The patent uses composite materials by combining multiple dichroic materials (first and second dichroic materials with different absorption wavelengths) with a liquid crystal compound to form a polarizer-forming composition. This composite approach enables both high degree of alignment and enhanced optical performance, resolving the contradiction between manufacturing precision and device complexity.
Solution Approach 2:
The patent segments the polarizer structure into distinct array structures formed by different dichroic materials. The first dichroic material forms one array structure while the second dichroic material forms another, allowing each component to contribute specifically to the overall alignment and optical properties, thereby achieving high manufacturing precision.
2Reliability
If a polarizer uses a single dichroic material, then the device structure is simpler, but the optical performance and alignment degree are insufficient
Solution Approach 1:
The patent employs composite materials comprising a first dichroic material and a second dichroic material with different maximum absorption wavelengths, combined with a liquid crystal compound. This composite formulation enhances optical performance and alignment degree while managing material composition complexity through systematic design.
Solution Approach 2:
The patent applies local quality by having different dichroic materials form distinct array structures within the polarizer. Each dichroic material is positioned and oriented to provide specific optical functions at different locations or wavelengths, improving overall reliability while controlling complexity through functional differentiation.
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 proposed solution improves the degree of alignment and performance of polarizers, leading to better image display devices with enhanced optical properties and functionality.
Implementation Method 1
a polarizer which is formed of a polarizer-forming composition containing a liquid crystal compound, a first dichroic material, and a second dichroic material, in which the polarizer has an array structure formed of the first dichroic material and an array structure formed of the second dichroic material
Implementation Method 2
a first dichroic material, and a second dichroic material
Implementation Method 3
λM represents a maximum absorption wavelength in a difference spectrum between an absorption spectrum of a film formed of a composition that contains the first dichroic material, the second dichroic material, and the liquid crystal compound
Data Source
AI summary
A polarizer with a high degree of alignment and an image display device including the polarizer. The polarizer is formed of a polarizer-forming composition containing a liquid crystal compound, a first dichroic material, and a second dichroic material, in which the polarizer has an array structure formed of the first dichroic material and an array structure formed of the second dichroic material.