Liquid Crystal Cell Electrode Layout to Suppress Moire Patterns
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Solution Overview
Problem
Existing liquid crystal devices suffer from moire patterns due to overlapping strip electrodes with similar extension directions, leading to interference and uneven light refraction.
Innovation Solution
A liquid crystal device is designed with multiple liquid crystal cells where the extension directions of strip electrodes in each cell are orthogonal or rotated at specific angles to prevent overlapping, ensuring different voltage applications and reducing moire interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If strip electrodes are arranged with similar extension directions to achieve uniform liquid crystal alignment, then alignment uniformity is improved, but moire patterns occur due to overlapping electrodes causing interference
Solution Approach 1:
The patent applies asymmetry by configuring strip electrodes in different liquid crystal cells with different extension directions (e.g., first cell has electrodes extending in a first direction, second cell has electrodes extending in a second direction different from the first). This asymmetric arrangement prevents overlapping of electrodes with similar extension directions, thereby eliminating moire patterns while maintaining alignment uniformity within each cell.
2Adaptability or versatility
If multiple liquid crystal cells are stacked to enhance light control capability, then light refraction control is improved, but device complexity increases due to multiple electrode arrangements
Solution Approach 1:
The patent segments the liquid crystal device into multiple liquid crystal cells (first liquid crystal cell, second liquid crystal cell, etc.), each with its own strip electrodes. This segmentation allows independent control of light refraction in each cell, enhancing overall light control capability while distributing the electrode arrangement complexity across separate, manageable units.
Solution Approach 2:
The patent resolves complexity by transitioning from a two-dimensional electrode arrangement (within a single cell) to a three-dimensional stacked configuration of multiple cells. Each cell's electrodes are arranged in different directions and positions along the stacking direction, allowing light control in multiple dimensions without requiring all electrodes to be arranged in the same plane, thus managing complexity through spatial distribution.
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 moire patterns, allowing for controlled light refraction and diffusion, enhancing the performance of the liquid crystal device by reducing interference and improving light control.
Implementation Method 1
controls an alignment state of liquid crystal molecules or a refractive index distribution of a liquid crystal layer to refract light (p-polarized light and s-polarized light) passing through the liquid crystal layer
Implementation Method 2
forming strip-shaped electrodes for forming the respective liquid crystal lenses
Data Source
AI summary
According to one embodiment, a liquid crystal device includes a first liquid crystal cell and a second liquid crystal cell. The first liquid crystal cell and the second liquid crystal cell each include a first strip electrode, a second strip electrode, a third strip electrode and a fourth strip electrode. The extension direction of each of the first strip electrode and the second strip electrode in the first liquid crystal cell is different from the extension direction of each of the first strip electrode and the second strip electrode in the second liquid crystal cell. The extension direction of each of the first strip electrode and the second strip electrode is orthogonal to the extension direction of each of the third strip electrode and the fourth strip electrode.