Liquid Crystal Element Uniform Potential Gradient Design
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Solution Overview
Problem
The complexity in designing liquid crystal lenses arises from varying inter-electrode distances, which require multiple favorable frequencies and electrical resistivities, leading to increased manufacturing costs and design complexity.
Innovation Solution
A liquid crystal element with a specific configuration including a first electrode, a second electrode, an insulating layer, a resistance layer, and a liquid crystal layer, where the resistance layer has a higher resistivity than the electrodes but lower than the insulating layer, and the insulating layer is thinner than the resistance layer, allowing for a uniform electric potential gradient suitable for a Fresnel lens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple high-resistance layers with different electrical resistivities are provided for a single liquid crystal lens to accommodate varying inter-electrode distances, then the favorable frequency and electrical resistivity can be optimized for each inter-electrode distance, but the design complexity increases and manufacturing cost increases
Solution Approach 1:
The patent applies parameter changes by making the thickness of the insulating layer a variable parameter that corresponds to the inter-electrode distance. By adjusting the insulating layer thickness rather than changing the electrical resistivity of multiple high-resistance layers, the system optimizes performance for different inter-electrode distances while maintaining a single high-resistance layer structure, thus reducing design complexity.
Solution Approach 2:
The patent implements universality by designing a single high-resistance layer that works across multiple liquid crystal lenses with different specifications. The insulating layer thickness is adjusted to match the inter-electrode distance, allowing the same high-resistance layer to be universally applied across different lens configurations without requiring multiple specialized layers.
2Reliability
If multiple high-resistance layers with different electrical resistivities are provided for different liquid crystal lenses with different specifications, then each lens can be optimized for its specific inter-electrode distance, but the manufacturing cost increases
Solution Approach 1:
The patent uses parameter changes by adjusting the insulating layer thickness instead of changing the electrical resistivity of high-resistance layers. This approach allows optimization for different inter-electrode distances while maintaining the same high-resistance layer material and structure across all lens types, significantly reducing manufacturing costs.
Solution Approach 2:
The patent achieves universality by creating a single high-resistance layer design that can be used across all liquid crystal lenses with different specifications. The insulating layer thickness is varied to match each lens's inter-electrode distance, eliminating the need to manufacture multiple types of high-resistance layers and reducing overall manufacturing complexity and cost.
3Device complexity
If the insulating layer thickness is made smaller to reduce variation in favorable frequency and resistivity, then design simplification is achieved, but the electrical insulation performance must be maintained
Solution Approach 1:
The patent applies parameter changes by carefully selecting the insulating layer thickness as a function of the inter-electrode distance. By optimizing this thickness parameter, the system achieves both design simplification (single high-resistance layer) and maintained electrical insulation performance, as the thinner insulating layer is compensated by the adjusted inter-electrode distance geometry.
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 variations in frequency and resistivity, simplifies the design, and lowers manufacturing costs by maintaining a consistent electric potential gradient across different liquid crystal lenses.
Implementation Method 1
a liquid crystal layer including liquid crystal... The liquid crystal element refracts and outputs light
Data Source
AI summary
A liquid crystal element (100) refracts and outputs light. The liquid crystal element (100) includes a first electrode (1), a second electrode (2), an insulating layer (21) that is an electric insulator, a resistance layer (22), a liquid crystal layer (23) including liquid crystal, and a third electrode (3). The insulating layer (21) is disposed between each location of the first and second electrodes (1) and (2) and the resistance layer (22) to insulate the first and second electrodes (1) and (2) from the resistance layer (22). The resistance layer (22) has an electrical resistivity higher than that of the first electrode (1) and lower than that of the insulating layer (21). The resistance layer (22) and the liquid crystal layer (23) are disposed between the insulating layer (21) and the third electrode (3). The resistance layer (22) is disposed between the insulating layer (21) and the liquid crystal layer (23). The insulating layer (21) has a thickness (ts) smaller than a thickness (th) of the resistance layer (22).