Liquid Crystal Lens Panel Vertical Alignment UV Curing
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Solution Overview
Problem
Existing liquid crystal lens panels for three-dimensional image display devices face challenges in maintaining optimal optical properties, particularly when exposed to ultraviolet light during the curing process, which can damage liquid crystal molecules and degrade their performance.
Innovation Solution
A liquid crystal lens panel design featuring a first substrate with a lens area, non-lens area, and cutting area, including a liquid crystal driving part that applies a voltage to drive liquid crystal molecules vertically, reducing damage from ultraviolet light by aligning them vertically during adhesive curing, and a method of manufacturing that involves attaching the panel to a display device using an adhesive member and curing it with ultraviolet light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultraviolet light is used to cure the adhesive member during manufacturing, then the adhesive bonding is effective, but the liquid crystal molecules are damaged and optical properties deteriorate
Solution Approach 1:
The patent applies a preliminary voltage to the liquid crystal lens panel before ultraviolet curing to pre-align the liquid crystal molecules in a stable state. This preliminary action protects the molecules from ultraviolet damage by establishing their orientation before the harmful curing process occurs, thereby maintaining optical properties while still achieving effective adhesive bonding.
2Reliability
If liquid crystal molecules are aligned horizontally for optimal optical performance, then viewing quality is improved, but ultraviolet light damage increases during adhesive curing
Solution Approach 1:
The patent implements preliminary voltage application to establish the desired horizontal alignment of liquid crystal molecules before ultraviolet curing begins. This ensures that the molecules achieve their optimal optical orientation while being protected from ultraviolet damage during the curing process, as the voltage maintains their stable alignment throughout the harmful exposure.
Solution Approach 2:
The applied voltage creates an electric field that counteracts the disruptive effect of ultraviolet light on liquid crystal molecules. This preliminary anti-action prevents the molecules from becoming disordered during curing, thereby protecting the optical performance while still allowing effective adhesive bonding to occur.
3Ease of manufacture
If no voltage is applied during adhesive curing, then the manufacturing process is simple, but liquid crystal molecules become disordered and optical properties are degraded
Solution Approach 1:
The patent applies a voltage to the liquid crystal lens panel before and during the adhesive curing process. This preliminary action maintains the liquid crystal molecules in a stable, ordered state throughout curing, preventing disorder and optical degradation while still allowing the manufacturing process to remain relatively simple and efficient.
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 solution significantly improves the optical properties of the liquid crystal lens panel by minimizing damage from ultraviolet light, ensuring the liquid crystal molecules remain functional and maintaining the panel's performance, as demonstrated by enhanced voltage holding ratios and reduced flickering phenomena.
Implementation Method 1
the liquid crystal molecules of the liquid crystal layer may be driven substantially in the vertical direction by an electric field generated by the first voltage and the second voltage
Implementation Method 2
irradiating an ultraviolet light onto the adhesive member through the liquid crystal lens panel to cure the adhesive member
Implementation Method 3
The image light exiting from the display panel is refracted by the liquid crystal lens panel that functions as the convex lens or the Fresnel lens
Data Source
AI summary
A liquid crystal lens panel includes a first substrate including a lens area, a non-lens area disposed adjacent to the lens area, and a cutting area disposed adjacent to the non-lens area and including a liquid crystal driving part, a second substrate disposed opposite to the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate, where the liquid crystal driving part applies a liquid crystal driving voltage to the liquid crystal layer through the non-lens area, and liquid crystal molecules of the liquid crystal layer are driven substantially in a vertical direction by the liquid crystal driving voltage.