Cholesteric Reflective Panel Stacking With Two-Mask Color Layers
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Solution Overview
Problem
The existing methods for preparing reflective electronic devices with cholesteric liquid crystal panels are costly and complex due to the complexity of layer stacking and design.
Innovation Solution
A reflective electronic device is designed with a specific structure comprising first and second panels, each having cholesteric liquid crystal layers and insulation layers with differently sized spacers, formed using two masks to pattern material layers of varying thicknesses, simplifying the process and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple layers of cholesteric liquid crystal panels are stacked together to reflect different colors, then the display performance is improved, but the process cost and complexity of the preparation method increases
Solution Approach 1:
The device is divided into multiple stacked panels, each panel containing a cholesteric liquid crystal layer with specific thickness to reflect different colors. This segmentation allows independent optimization of each panel's liquid crystal layer thickness while maintaining overall display performance, resolving the contradiction between enhanced display capabilities and manufacturing complexity
Solution Approach 2:
The patent utilizes parameter changes by varying the thickness of cholesteric liquid crystal layers across different panels to achieve different color reflections. By controlling the pitch parameter of the cholesteric structure, each panel can be tuned to reflect specific wavelengths, enabling multi-color display through stacking while using standardized panel architectures to control process complexity
2Adaptability or versatility
If multiple layers of cholesteric liquid crystal panels are stacked together to reflect different colors, then the display performance is improved, but the manufacturing cost increases
Solution Approach 1:
The patent employs universal substrate structures and common manufacturing processes across all panels, with the only variation being the liquid crystal layer thickness. This multi-functionality approach allows the same base architecture to serve multiple color reflection purposes, reducing per-unit manufacturing costs while achieving enhanced display performance through stacking
Solution Approach 2:
By changing only the critical parameter of liquid crystal layer thickness while keeping all other manufacturing parameters constant across panels, the patent enables cost-effective production. This single parameter variation approach maintains manufacturing simplicity and material selection consistency, thereby controlling costs while achieving the desired multi-color display capability
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 approach simplifies the manufacturing process and reduces costs by using two masks to create differently colored cholesteric liquid crystal layers, enhancing the efficiency and cost-effectiveness of reflective electronic device production.
Implementation Method 1
a first cholesteric liquid crystal layer disposed between the first substrate and the second substrate
Implementation Method 2
reflect different colors
Data Source
AI summary
A reflective electronic device includes a first panel and a second panel. The first panel includes first and second substrates, a second substrate, a first cholesteric liquid crystal layer, a first insulation layer having a first opening, and a first main spacer having a second main surface and a first main thickness. The second panel includes third and fourth substrates, a second cholesteric liquid crystal layer, a second insulation layer having a second opening, and a second main spacer having a fourth main surface and a second main thickness. The second main surface is disposed in the first opening. The fourth main surface is disposed in the second opening. The second main thickness is greater than the first main thickness.