Electric Field Generating Substrate for Liquid Crystal Lens
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Solution Overview
Problem
Conventional liquid crystal lenses have complex preparation and driving methods, limiting their widespread use due to the need for sufficient space and complicating the process of changing focus positions, which contradicts the trend of thinness and lightweight electronic products.
Innovation Solution
An electric field generating substrate with a unique pattern design, featuring parallel main and sub-electrodes with resistors in between, which generates a gradient electric field to control light deflection and focusing effects in a liquid crystal lens, simplifying the preparation and driving processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional liquid crystal lens uses complex preparation and driving methods, then the lens can achieve focusing and light deflection effects, but the device complexity increases and the preparation process becomes cumbersome
Solution Approach 1:
The electrode structure is segmented into multiple parallel electrodes (first electrode, second electrode, third electrode, fourth electrode) with specific resistor configurations between them. This segmentation allows the complex focusing function to be achieved through simpler, modular components that can be independently manufactured and assembled, reducing the overall preparation complexity while maintaining the focusing effect.
Solution Approach 2:
The patent changes the electrical parameters by introducing resistors with specific resistance values (first resistor, second resistor, third resistor, fourth resistor) between the electrodes. This parameter change simplifies the driving method by enabling voltage-controlled focusing through straightforward electrical connections, reducing the complexity of the driving circuit while achieving reliable light deflection and focusing effects.
2Ease of operation
If conventional liquid crystal lens uses complex driving methods, then the lens can control focus position, but the driving circuit becomes complicated and power consumption increases
Solution Approach 1:
The patent merges the driving circuit complexity into the electrode structure itself by integrating resistors directly between the electrodes. This combination allows focus position control to be achieved through simple voltage application to the electrode pairs, eliminating the need for complex external driving circuits while maintaining ease of operation for focus adjustment.
Solution Approach 2:
The electrode structure with integrated resistors serves itself by creating the necessary electric field gradients automatically when voltage is applied. The resistors between the electrodes self-generate the gradient electric fields needed for light deflection and focusing, eliminating the need for complex external driving mechanisms and reducing power consumption.
3Adaptability or versatility
If conventional liquid crystal lens is designed for focusing function, then the lens can change focus position, but the space requirement increases contradicting thinness trend
Solution Approach 1:
The patent achieves focus adjustment by creating electric field gradients in the horizontal dimension through the resistor-configured electrode structure, rather than requiring vertical space for mechanical focus adjustment. This dimensional approach allows the lens to maintain thinness while achieving focus adjustment through electrical field manipulation in the plane of the substrate.
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 substrate enables a lightweight and low-power liquid crystal lens with a simplified preparation and driving method, allowing for wider application and improved focusing and illumination control, reducing the complexity of the driving circuit and enabling broader use in electronic devices.
Implementation Method 1
the first electric field generating unit can generate a gradient electric field by disposing the first resistor between the first main electrode and the first sub-electrode and disposing the second resistor between the first sub-electrode and the second main electrode
Implementation Method 2
the liquid crystal lens has electrical modulation property, the focus position or the deflection direction of the light can be controlled through an applied electric field
Data Source
AI summary
Provided is an electric field generating substrate and a liquid crystal lens containing the same. The electric field generating substrate contains: a first substrate; and a first electric field generating unit disposed on the first substrate. The first electric field generating unit contains: a first main electrode; a second main electrode; and a first sub-electrode disposed between the first main electrode and the second main electrode. The first sub-electrode electrically connects to the first main electrode and the second main electrode. A first resistor is disposed between the first main electrode and the first sub-electrode, and a second resistor is disposed between the first sub-electrode and the second main electrode. In addition, the first main electrode, the second main electrode and the first sub-electrode are substantially parallel to each other.