Liquid Crystal Light Control Device with Intersecting Electrode Patterns
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Solution Overview
Problem
Existing light distribution control technologies using liquid crystal cells face challenges in preventing moiré and non-uniform brightness due to overlapping electrode patterns, which lead to interference and color irregularities.
Innovation Solution
A liquid crystal light control device comprising multiple liquid crystal cells with electrodes arranged at specific angles (45 degrees ± 10 degrees or 67.5 degrees ± 10 degrees) to intersect, preventing overlapping patterns and minimizing interference by controlling the diffusion of polarized components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple liquid crystal cells are overlapped to control light distribution, then light distribution control capability is improved, but moiré and non-uniform brightness occur due to overlapping electrode patterns
Solution Approach 1:
The patent applies asymmetry by setting the electrode patterns in overlapping liquid crystal cells at non-parallel angles (specifically 45° or 67.5° relative to each other). This asymmetric angular arrangement prevents the electrode patterns from aligning and creating moiré effects, while still maintaining the ability to control light distribution through the stacked cells.
Solution Approach 2:
The patent changes the angular parameter of electrode pattern orientation to resolve the contradiction. By specifying that electrodes in overlapping cells should be arranged at angles of 45° or 67.5° relative to each other, the patent modifies this geometric parameter to eliminate moiré and non-uniform brightness while preserving light control functionality.
2Ease of manufacture
If electrode patterns are arranged parallel to each other in overlapping liquid crystal cells, then manufacturing is simplified, but interference and color irregularities occur
Solution Approach 1:
Instead of arranging electrode patterns in parallel (symmetric arrangement), the patent introduces asymmetric angular offsets of 45° or 67.5° between overlapping cells. This asymmetric configuration prevents the interference and color irregularities that would result from parallel alignment, while still allowing for standardized manufacturing processes.
3Manufacturing precision
If liquid crystal cells are stacked to enhance light control, then light distribution precision is improved, but device complexity increases
Solution Approach 1:
The patent manages device complexity by standardizing the angular parameter of electrode patterns to specific values (45° or 67.5°). This parameter standardization allows for precise light distribution control through multiple stacked cells while simplifying the manufacturing and alignment process, thereby controlling overall device complexity.
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 suppresses moiré and non-uniform brightness by ensuring that specific polarized components are not diffused across multiple liquid crystal cells, resulting in improved light distribution and reduced interference.
Implementation Method 1
a liquid crystal layer between the first substrate and the second substrate... controls the light distribution of light emitted from a light source using the electrooptical effect of liquid crystals
Implementation Method 2
a first electrode having a strip pattern, a second substrate arranged with a second electrode having a strip pattern
Data Source
AI summary
A liquid crystal light control device in an embodiment according to the present invention includes a first liquid crystal cell, and a second liquid crystal cell overlapping the first liquid crystal cell. Each of the first liquid crystal cell and the second liquid crystal cell includes a first substrate arranged with a first electrode having a strip pattern, a second substrate arranged with a second electrode having a strip pattern, and a liquid crystal layer between the first substrate and the second substrate. A longitudinal direction of the strip pattern of the first electrode and a longitudinal direction of the strip pattern of the second electrode are arranged to intersect at an angle in the range of 45 degrees±10 degrees.