Stacked Liquid Crystal Cell Electrode Layout for Moire Suppression
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Solution Overview
Problem
Existing liquid crystal devices suffer from moire patterns due to overlapping electrodes with similar extension directions.
Innovation Solution
The liquid crystal device is configured with multiple liquid crystal cells where the strip electrodes in each cell extend in different directions, ensuring no electrodes completely overlap, and the cells are stacked with rotational symmetry to suppress moire patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strip electrodes are formed in multiple liquid crystal cells with similar extension directions, then the device can control light effectively, but moire patterns occur due to electrode overlapping
Solution Approach 1:
The patent applies asymmetry by setting different extension directions for strip electrodes in different liquid crystal cells. Specifically, first strip electrodes extend in a first direction while second strip electrodes extend in a second direction that is not parallel to the first direction. This asymmetric arrangement prevents overlapping of electrodes with similar extension directions, thereby suppressing moire patterns while maintaining effective light control across multiple cells.
Solution Approach 2:
The patent introduces a directional dimension to electrode arrangement by specifying that strip electrodes in different cells extend in non-parallel directions. This adds orientational diversity to the otherwise repetitive electrode structure, transforming the problem from a one-dimensional overlapping issue into a multi-directional configuration that eliminates moire interference while preserving optical functionality.
2Object-affected harmful factors
If strip electrodes are arranged to extend in different directions in each cell, then moire patterns are suppressed, but device complexity increases
Solution Approach 1:
The patent applies local quality by allowing different regions (different liquid crystal cells) to have different electrode extension directions tailored to their specific positions. The first liquid crystal cell has strip electrodes extending in a first direction, while the second liquid crystal cell has strip electrodes extending in a second direction. This localized differentiation suppresses moire patterns at each position without requiring complete redesign of the entire device structure.
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
This configuration reduces interference actions and effectively suppresses moire patterns, enhancing the optical performance of the device.
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
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AI summary
The purpose of the embodiments is to provide a liquid crystal device in which it is possible to suppress moire. According to one embodiment, a liquid crystal device comprises a first liquid crystal cell and a second liquid crystal cell. The first liquid crystal cell and the second liquid crystal cell each comprise a first strip electrode and a second strip electrode, a first alignment film, a third strip electrode and a fourth strip electrode, a second alignment film, and a liquid crystal layer located between the first alignment film and the second alignment film. 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. In each of the first liquid crystal cell and 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 in plan view.