Segmented Electrode Angles for Liquid Crystal Lens Uniformity
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Solution Overview
Problem
Existing light control devices with liquid crystal lenses face inefficiencies due to ineffective areas where electric fields are not formed, leading to suboptimal light modulation and increased complexity in electrode designs.
Innovation Solution
The design incorporates a light control device with first and second liquid crystal cells, each featuring control electrodes with segments intersecting at different angles, allowing for efficient light modulation by reducing ineffective areas and optimizing the formation of liquid crystal lenses through precise alignment and voltage control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lead electrodes are disposed in the effective area of liquid crystal lenses, then electrical connection is achieved, but electric field disturbance occurs that prevents proper liquid crystal lens formation
Solution Approach 1:
The control electrodes are divided into multiple segments (first control electrode segments, second control electrode segments, third control electrode segments) arranged at different angles (first angle, second angle, third angle) relative to the light incident direction. This segmentation allows the electrodes to be distributed more efficiently in the effective area without creating electric field disturbances, enabling proper liquid crystal lens formation while maintaining electrical connectivity.
Solution Approach 2:
The patent introduces angular diversity by arranging electrode segments at multiple different angles rather than using simple linear or planar arrangements. This dimensional approach allows electrodes to be positioned in three-dimensional space around the light incident direction, reducing overlap and electric field interference in the effective area while maintaining comprehensive electrical coverage.
2Adaptability or versatility
If multiple liquid crystal lenses are layered with overlapping strip electrodes, then light control capability is enhanced, but lead electrodes occupy effective area causing electric field disturbance
Solution Approach 1:
Control electrodes are segmented into multiple groups with different angular orientations (first, second, and third angles relative to the light incident direction). This segmentation allows the electrodes to be distributed throughout the effective area without concentrating in specific regions, thereby maintaining full optical effectiveness while providing comprehensive electrical control for enhanced light modulation capability.
Solution Approach 2:
Different segments of control electrodes are positioned at specific angular locations to create localized electric fields where needed. This local quality approach ensures that each region of the effective area receives appropriate electrical control without interference from adjacent electrode structures, maximizing both light control capability and effective area utilization.
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 enhances light modulation efficiency by uniformly distributing light in multiple directions, reducing ineffective areas, and simplifying the electrode structure, thereby improving the overall performance of light control devices.
Implementation Method 1
a light control device includes: a first substrate including a plurality of first control electrodes disposed in an effective area
Implementation Method 2
layering a plurality of liquid crystal lenses in which strip electrodes of one liquid crystal lens and strip electrodes of the other liquid crystal lens overlap with each other in a shifted manner, such that the strip electrodes are arranged in a pseud fine structure. The lead electrode connected to each of the strip electrodes will be disposed in an effective area where the liquid crystal lens is formed, and it may cause disturbance in the electric field to form the liquid crystal lens
Data Source
AI summary
According to one embodiment, a light control device includes a first substrate including a plurality of first control electrodes disposed in an effective area, and a plurality of feed lines disposed in a peripheral area, a second substrate, and a first liquid crystal layer. The first control electrodes are transparent electrodes. Each of the first control electrodes includes, in the effective area, first segments crossing a first direction at a first angle, second segments crossing the first direction at a second angle, and third segments crossing the first direction at a third angle. The first control electrode is electrically connected to the feed line. The first to third angles are different from each other.