Polarizer Composition with Dual Dichroic Materials for High Alignment
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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, and existing solutions often require different production processes for various optical functions.
Innovation Solution
A polarizer formed from a composition containing a liquid crystal compound, a first dichroic material compatible with it, and a second dichroic material that is not compatible, where both dichroic materials are horizontally aligned, with specific absorption wavelengths and log P values, to enhance the degree of alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single dichroic material is used in the polarizer composition, then the production process is simpler, but the degree of alignment is insufficient
Solution Approach 1:
The patent uses a composite polarizer composition containing both a first dichroic material (iodine or iodine compound) and a second dichroic material (organic dye). This composite approach enables high degree of alignment by combining the alignment capabilities of different dichroic materials while maintaining distinct functional roles within the polarizer structure.
Solution Approach 2:
The patent applies different dichroic materials to different functional requirements within the polarizer. The first dichroic material (iodine-based) provides one type of alignment characteristic while the second dichroic material (organic dye) provides complementary alignment properties, creating local quality differentiation to achieve overall high alignment performance.
2Manufacturing precision
If different dichroic materials are used to improve alignment, then the degree of alignment improves, but different production processes are required
Solution Approach 1:
The patent merges the production processes for different dichroic materials into a single unified process. By formulating a composition that contains both the first dichroic material (iodine or iodine compound) and the second dichroic material (organic dye) together with a liquid crystal compound, the patent enables simultaneous processing and alignment of both materials through one production cycle, eliminating the need for separate production processes.
Solution Approach 2:
The polarizer composition serves multiple functions simultaneously: it provides alignment for both iodine-based and organic dye-based dichroic materials, maintains compatibility with liquid crystal compounds, and achieves high degree of alignment all through a single unified formulation and production process.
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 of the polarizer, leading to enhanced performance in image display devices by optimizing the alignment of dichroic materials within the polarizer composition.
Implementation Method 1
the first dichroic material and the second dichroic material are aligned horizontally with respect to a surface of the polarizer
Implementation Method 2
any one of the first dichroic material or the second dichroic material is a dichroic material having a maximum absorption wavelength in a range of 380 nm or greater and less than 455 nm
Data Source
AI summary
An object of the present invention is to provide a polarizer with a high degree of alignment and an image display device including the polarizer. The polarizer of the present invention is 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 first dichroic material and the second dichroic material are aligned horizontally with respect to a surface of the polarizer, the first dichroic material is a compound compatible with the liquid crystal compound, and the second dichroic material is a compound which is not compatible with the liquid crystal compound.