Liquid Crystal Polarizer Layout for Seamless Foldable Displays
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Solution Overview
Problem
In foldable image display devices with multiple units, the gap between adjacent image display surfaces is visually noticeable due to the use of polarizers, which leads to a less-than-ideal display experience as the polarizers cause spacing issues and deterioration in high-humidity environments.
Innovation Solution
The use of polarizers containing a dichroic substance and a liquid crystal compound, which are designed to be thin, moisture-resistant, and aligned to reduce the interval between image display surfaces, allowing for a seamless display without conspicuous gaps, even when bent or folded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional polarizers (PVA containing iodine) are used in image display units, then high polarization degree is achieved, but the polarizers are thick and moisture-sensitive causing visible gaps and deterioration in high-humidity environments
Solution Approach 1:
The patent changes the material composition parameters of the polarizer by incorporating a liquid crystal compound with specific molecular structure and orientation characteristics, replacing the conventional PVA-iodine system. This parameter change enables the polarizer to achieve both thinness and moisture resistance while maintaining high polarization degree
Solution Approach 2:
The patent creates a composite polarizer structure combining liquid crystal compound, dichroic substance, and polymer matrix. This composite material approach allows the polarizer to integrate multiple functions: thin film formation, moisture resistance, and high polarization efficiency, resolving the contradiction between thickness and reliability
2Area of stationary object
If multiple image display units are arranged adjacent to each other, then large screen display is achieved, but visible gaps appear between adjacent units due to polarizer thickness and spacing requirements
Solution Approach 1:
By changing the polarizer material to a thin-film liquid crystal-based composition, the patent reduces the polarizer thickness parameter, which directly enables smaller gaps between adjacent image display units while maintaining the required optical performance for large area display
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 solution effectively reduces the visible gap between adjacent image display units, maintaining image quality and preventing deterioration in high-temperature and high-humidity conditions, ensuring a seamless display experience.
Implementation Method 1
polarizers contain a dichroic substance and a liquid crystal compound
Implementation Method 2
polarizers disposed on image display surface sides of the image display units
Data Source
AI summary
Provided is an image display device that includes a plurality of image display units disposed adjacent to each other and is capable of reducing an interval between image display surfaces of the adjacent image display units. The image display device includes a plurality of image display units and polarizers disposed on image display surface sides of the image display units, in which the image display units are disposed adjacent to each other, and the polarizers contain a dichroic substance and a liquid crystal compound.