Stacked Liquid Crystal Light Adjustment Device with Peripheral Metal Wire Shielding
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Solution Overview
Problem
Conventional light modulation devices using liquid crystal cells suffer from light leakage and degradation of light modulation function due to orientation disorder of liquid crystal molecules in the peripheral regions, leading to inefficiencies in light control.
Innovation Solution
A light adjustment device comprising stacked liquid crystal cells with metal wires on substrates, where the metal wires are arranged to block light in the peripheral regions, preventing orientation disorder and light leakage by ensuring light is shielded across the entire surface outside the light adjustment region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a liquid crystal cell is used for light modulation, then light distribution can be controlled, but light leakage occurs in peripheral regions due to orientation disorder of liquid crystal molecules
Solution Approach 1:
The invention divides the substrate into different functional regions: a light modulation region with electrodes and alignment films for active light control, and a peripheral light-shielding region without electrodes that prevents light leakage. This segmentation isolates the problematic peripheral region from the functional region, allowing each to perform its specific role without interfering with the other.
Solution Approach 2:
The invention extracts the light-shielding function from the electrode structure by creating a separate peripheral region dedicated to light blocking. This removes the harmful light leakage effect from the peripheral region while preserving the light modulation function in the central region, effectively separating the useful function from the harmful effect.
2Ease of operation
If electrodes and alignment films are provided only in the light adjustment region, then light modulation is achieved in that region, but peripheral regions experience orientation disorder and light leakage
Solution Approach 1:
The invention converts the harmful light leakage from the peripheral region into a beneficial light-shielding function. By deliberately designing the peripheral region to block light rather than modulate it, the previously problematic orientation disorder is transformed into a useful light-blocking barrier that improves overall device performance.
Solution Approach 2:
The invention applies different structural qualities to different regions: the central region has electrodes and alignment films for light modulation, while the peripheral region has a simplified structure with light-shielding properties. This local differentiation allows each region to optimize its specific function without compromising the other.
3Reliability
If the light-shielding layer is provided on the substrate closer to the light emission target, then light leakage is effectively blocked, but the structure becomes more complex
Solution Approach 1:
The invention merges the light-shielding function with the substrate structure itself by forming the light-shielding layer as an integral part of the substrate rather than as a separate component. This integration achieves effective light leakage prevention while avoiding the complexity of additional discrete light-blocking elements.
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 effectively prevents light leakage and maintains the light modulation function by ensuring that light is blocked in the peripheral regions, enhancing the overall light control and modulation efficiency.
Implementation Method 1
electrodes are provided on two substrates sandwiching a liquid crystal layer, and the orientation of liquid crystal molecules is controlled by applying drive voltage between the electrodes provided on the two substrates
Implementation Method 2
a light adjustment region that polarizes light emitted from a light source
Implementation Method 3
light is blocked at gaps between the first metal wires by the second metal wires in the direction in which the light is emitted
Data Source
AI summary
A light adjustment device includes a plurality of liquid crystal cells each including a light adjustment region that polarizes light emitted from a light source, the liquid crystal cells being stacked in a direction in which the light is emitted. The liquid crystal cells each include a first substrate in which a plurality of first metal wires are provided, and a second substrate in which a plurality of second metal wires are provided and that sandwiches a liquid crystal layer with the first substrate.