Liquid Crystal Lens Panel Light Blocking Pattern
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Solution Overview
Problem
Existing liquid crystal lens panels face issues with reliability and optical characteristics, particularly in maintaining uniform cell gaps and preventing liquid crystal deterioration during the manufacturing process, which affects luminance and optical efficiency.
Innovation Solution
The liquid crystal lens panel incorporates a light blocking pattern in the seal line and peripheral regions, along with column spacers of varying sizes and densities, to prevent liquid crystal deterioration and maintain uniform cell gaps, ensuring improved reliability and optical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a sealant is applied in the seal line region to bond substrates, then substrate bonding is achieved, but liquid crystal deterioration occurs during the solidifying process
Solution Approach 1:
The patent introduces a light blocking pattern that converts the harmful UV light (which causes liquid crystal deterioration) into a beneficial tool by selectively blocking it from reaching the liquid crystal layer while allowing the sealant to be cured. The UV light is used to solidify the sealant, but the light blocking pattern prevents the same UV light from damaging the liquid crystal, thus converting a harmful effect into a controlled process.
Solution Approach 2:
The light blocking pattern acts as an intermediary element between the UV light source and the liquid crystal layer. It mediates the interaction by selectively blocking UV light from reaching the liquid crystal while permitting the sealant curing process to occur, thus protecting the liquid crystal from deterioration during bonding.
2Manufacturing precision
If column spacers are used to maintain cell gap, then cell gap uniformity is achieved, but liquid crystal alignment is disturbed at electrode edges
Solution Approach 1:
The patent applies different properties to different regions by making the column spacers selectively transparent or opaque to UV light based on their location. Spacers in regions where liquid crystal alignment must be preserved are made transparent to UV, while spacers in non-critical regions can be opaque. This local differentiation resolves the contradiction between maintaining cell gap uniformity and preserving liquid crystal alignment.
3Strength
If UV light is used to solidify the sealant, then bonding is achieved, but liquid crystal deterioration occurs
Solution Approach 1:
The light blocking pattern converts the harmful UV light into a beneficial process tool by enabling selective UV curing. The UV light is allowed to reach the sealant for solidification while being blocked from reaching the liquid crystal layer, thus converting a potentially harmful radiation into a controlled bonding process.
Solution Approach 2:
The patent segments the UV light path by introducing light blocking patterns in specific regions. This segmentation allows UV light to reach certain areas (sealant regions) for curing while blocking other areas (liquid crystal regions) from UV exposure, thus enabling simultaneous bonding and protection.
Data Source
AI summary
A liquid crystal lens panel includes a plurality of lens electrodes, an alignment layer, a sealant and a light blocking pattern. The lens electrodes are arranged in an active region. The alignment layer is disposed in an alignment region which overlaps an entire of the active region and extends further than the active region. The sealant is disposed in a seal line region which is outside the alignment region. The light blocking pattern is disposed in the light blocking region which is between the seal line region and the alignment region.