3D Display Lens Structure with Electrode Patterns for Uniform Liquid Crystal Alignment
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Solution Overview
Problem
Conventional liquid crystal lens 3D display devices suffer from disclination lines and crosstalk due to inconsistent tilting directions of liquid crystal molecules, which degrade the display quality.
Innovation Solution
A lens structure with a specific configuration of substrates, anisotropic birefringence medium, and electrode patterns that create a controlled electric field distribution, forming either a Fresnel lens or gradient-index lens to align liquid crystal molecules uniformly, preventing disclination lines and improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional liquid crystal lens is used, then 3D display function is achieved, but disclination lines and crosstalk occur due to inconsistent liquid crystal molecule tilting directions
Solution Approach 1:
The patent applies local quality by designing different electrode patterns (center electrodes and edge electrodes) that create locally optimized electric field distributions. The center electrodes generate radial electric fields while edge electrodes generate tangential electric fields, ensuring that liquid crystal molecules tilt consistently in different regions of the lens, thereby eliminating disclination lines and crosstalk while maintaining 3D display functionality.
2Reliability
If liquid crystal molecules are aligned uniformly, then disclination lines are prevented, but device structure becomes more complex
Solution Approach 1:
The patent segments the electrode structure into multiple functional regions: center electrodes and edge electrodes. This segmentation allows each region to independently control the tilt direction of liquid crystal molecules in its respective area. The center electrodes handle the central region's molecular alignment while edge electrodes handle the peripheral region, achieving uniform overall alignment through coordinated control of simpler, dedicated components.
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 controlled electric field distribution ensures preferred tilting directions of liquid crystal molecules, eliminating disclination lines and crosstalk, thereby enhancing the display quality of 3D images.
Implementation Method 1
An electric field distribution is formed between the upper center electrode, the lower center electrode, the upper edge electrode, the lower edge electrode, the at least one set of upper side electrodes, and the at least one set of lower side electrodes
Implementation Method 2
The anisotropic birefringence medium is located between the upper substrate and the lower substrate
Implementation Method 3
the tilting directions of liquid crystal molecules in a conventional liquid crystal lens 3D display device are inconsistent
Data Source
AI summary
A lens structure and a 3D display device having the same are provided. The lens structure has unit regions. Each unit region includes upper and lower substrates, an anisotropic birefringence medium, center electrodes, edge electrodes and at least one set of side electrodes. The upper and the lower substrates are disposed oppositely to each other. The anisotropic birefringence medium is located between the upper and lower substrates. The center electrodes, the edge electrodes and the at least one set of side electrodes are located on the upper and lower substrates. The edge electrodes are disposed corresponding to the center electrodes. The at least one set of side electrodes are disposed between the center electrodes and the edge electrodes. An electric field distribution is formed between the center electrodes, the edge electrodes and the at least one set of side electrodes, so that the anisotropic birefringence medium constitutes a Fresnel lens.