Random Spacer Arrangement in Liquid Crystal Light Barrier
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Solution Overview
Problem
Stereoscopic display devices with liquid crystal barriers face issues with uneven luminance due to the moire phenomenon, leading to reduced image quality, especially when spacers are periodically arranged, causing interference fringes and color imbalances.
Innovation Solution
A light barrier element with randomly arranged spacers between substrates in the liquid crystal barrier, which suppresses unevenness in luminance and color, improving image quality by avoiding periodic arrangements that cause interference fringes and color moire phenomena.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If spacers are periodically arranged in the liquid crystal barrier, then manufacturing precision is improved, but luminance uniformity deteriorates due to moire phenomenon
Solution Approach 1:
The patent applies asymmetry by changing the periodic arrangement of spacers to a random arrangement. This asymmetric configuration disrupts the regular interference patterns that cause moire phenomena, thereby improving luminance uniformity while maintaining manufacturing feasibility through random distribution methods
Solution Approach 2:
The patent changes the arrangement parameter of spacers from periodic to random. This parameter change eliminates the fixed spatial frequency that interacts with pixel arrangements to produce moire effects, resolving the contradiction between manufacturing precision and luminance uniformity
2Manufacturing precision
If spacers are non-randomly (periodically, or regularly) arranged, then manufacturing precision is improved, but image quality deteriorates due to moire phenomenon
Solution Approach 1:
The patent uses asymmetry by implementing random spacer arrangement instead of periodic patterns. This asymmetric layout prevents the formation of regular interference fringes, thereby improving image quality and eliminating moire phenomena while maintaining acceptable manufacturing precision
Solution Approach 2:
The patent converts the potential harm of random arrangement (reduced manufacturing precision) into a benefit by eliminating moire phenomena. The random configuration, while less precise to manufacture, successfully converts the interference pattern problem into a solution that improves overall image quality and display reliability
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 random arrangement of spacers effectively reduces luminance and color unevenness, enhancing the overall display quality by ensuring even light transmission and minimizing interference effects, resulting in improved stereoscopic and two-dimensional image displays.
Implementation Method 1
liquid crystal molecules are rotated depending on applied voltages, so that a refractive index of such a rotated-molecule portion is changed, leading to light modulation
Implementation Method 2
a refractive index of such a rotated-molecule portion is changed, leading to light modulation
Implementation Method 3
This suppresses unevenness in luminance due to a moire phenomenon (occurrence of an interference fringe) compared with the case where a plurality of spacers are non-randomly (periodically, or regularly) arranged
Data Source
AI summary
A display device includes a display section, and a light barrier element. The light barrier element includes a pair of substrates, a liquid crystal layer that is provided between the pair of substrates and has a plurality of sub-regions that transmit or block light, and a plurality of spacers provided between the pair of substrates. The plurality of spacers are randomly arranged in part or all of a region in surfaces of the substrates.