Liquid Crystal Polarizer Alignment via X-Ray Diffraction Control
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Solution Overview
Problem
Current polarizers for image display devices have limitations in achieving a high degree of alignment, which affects their performance, and existing technologies use different devices for various optical functions, leading to distinct production processes for each function.
Innovation Solution
A polarizer formed with a composition containing a liquid crystal compound and a dichroic material, where the liquid crystal compound and dichroic material are horizontally aligned, with specific X-ray diffraction characteristics that include peaks without integer multiple relationships, indicating the presence of both nematic and crystal components, enhancing the degree of alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a polarizer is formed using conventional methods with liquid crystal compound and dichroic material, then the polarizer can be manufactured, but the degree of alignment is insufficient and performance is limited
Solution Approach 1:
The patent changes the physical and chemical parameters of the liquid crystal composition by incorporating specific additives and controlling molecular orientation during the stretching process. This modifies the alignment characteristics of the liquid crystal compound and dichroic material, achieving a degree of alignment of 90% or more and eliminating haze for improved performance
Solution Approach 2:
The patent creates a composite polarizer structure by combining liquid crystal compound, dichroic material, and specific additives in a formulated composition. This composite approach enables simultaneous achievement of high alignment degree and haze suppression, resolving the contradiction between manufacturing precision and reliability
2Reliability
If different devices are used for attenuation function, polarization function, and scattering function, then each function can be optimized, but the production process becomes complex and time-consuming
Solution Approach 1:
The patent merges multiple optical functions (attenuation, polarization, and scattering control) into a single polarizer device. By incorporating specific liquid crystal compounds and dichroic materials that simultaneously provide these functions, the patent eliminates the need for separate devices and simplifies the production process while maintaining functional optimization
Solution Approach 2:
The patent designs the polarizer to perform multiple functions universally within a single structure. The liquid crystal compound and dichroic material combination provides attenuation, polarization, and scattering control capabilities simultaneously, enabling one device to replace multiple specialized devices and improving production efficiency
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 polarizer achieves a high degree of alignment, improving the performance of image display devices by combining nematic and crystal components, which suppresses haze and maintains high-order crystal phase benefits.
Implementation Method 1
the polarizer-forming composition exhibits only nematic liquid crystallinity
Implementation Method 2
combining nematic and crystal components, which suppresses haze and maintains high-order crystal phase benefits
Implementation Method 3
in an X-ray diffraction spectrum of the polarizer, at least one of a plurality of peaks observed in a diffraction angle range of 17° or less is a peak A in which an interval of a periodic structure corresponding to the at least one peak
Implementation Method 4
in an X-ray diffraction spectrum of the polarizer, at least one of a plurality of peaks observed in a diffraction angle range of 17° or less is a peak A in which an interval of a periodic structure corresponding to the at least one peak
Data Source
AI summary
Provided are a polarizer having 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 and a dichroic material, in which the liquid crystal compound and the dichroic material are horizontally aligned, and in an X-ray diffraction spectrum of the polarizer, at least one of a plurality of peaks observed in a diffraction angle range of 17° or less is a peak A in which an interval of a periodic structure corresponding to the at least one peak does not have an integer multiple relationship with an interval of a periodic structure corresponding to at least one of other peaks.