Light Modulator Encapsulation Structure for Stable Optical Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light modulating devices face issues with maintaining designed optical properties and substrate alignment during encapsulation processes due to applied pressure, leading to optical defects.
Innovation Solution
The device incorporates a light modulation layer with a specific K value range (0.15 to 0.4) and uses a pressure-sensitive adhesive layer to stabilize the orientation state and adhesive force between substrates, ensuring consistent optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a separate drive electrode is provided for each column electrode to enable independent control, then control precision is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent combines multiple drive electrodes into a single drive electrode structure that controls multiple column electrodes simultaneously. This is achieved by forming the drive electrode and column electrodes as interdigitated comb-like structures where a single drive electrode alternates with multiple column electrodes, enabling independent control of each column electrode through a single drive electrode without requiring separate drive electrodes for each column.
Solution Approach 2:
The single drive electrode serves multiple functions by controlling multiple column electrodes simultaneously. The drive electrode is designed with a comb-like structure where each tooth of the comb can independently control a corresponding column electrode, allowing one drive electrode to perform the function of multiple drive electrodes while reducing device complexity.
2Measurement precision
If a separate drive electrode is provided for each column electrode to enable independent control, then control precision is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent combines multiple drive electrodes into a single drive electrode structure that controls multiple column electrodes simultaneously. This is achieved by forming the drive electrode and column electrodes as interdigitated comb-like structures where a single drive electrode alternates with multiple column electrodes, enabling independent control of each column electrode through a single drive electrode without requiring separate drive electrodes for each column.
3Adaptability or versatility
If liquid crystal material is placed between column electrodes to enable light modulation, then modulation function is achieved, but response time increases due to material filling time
Solution Approach 1:
The patent extracts the liquid crystal material from the space between column electrodes and places it only in the spaces between the drive electrode and column electrodes. This is achieved by forming the liquid crystal layer between the drive electrode and column electrodes without liquid crystal material in the gaps between adjacent column electrodes, thereby reducing the volume of liquid crystal material and improving response time while maintaining modulation functionality.
4Illumination intensity
If transparent electrodes are used to maintain visibility, then optical transparency is improved, but electrode resistance increases
Solution Approach 1:
The patent applies different material properties to different parts of the electrode structure. The drive electrode uses a transparent conductive material with low resistance, while the column electrodes use a reflective metal material. This local differentiation allows the drive electrode to maintain both transparency and low resistance, while the column electrodes provide efficient electrical connection without compromising overall device performance.
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 enables the light modulating device to maintain stable optical properties and substrate alignment even after pressure application, such as in an autoclave process, enhancing durability and optical consistency.
Implementation Method 1
a drive electrode 12 and a plurality of column electrodes 13 that are parallel to each other and extend in a second direction crossing the first direction, respectively, are formed in an interdigitated manner on the same plane
Implementation Method 2
an odd-numbered column electrode 13 and an even-numbered column electrode 13 are inverted with respect to each other in a plan view
Implementation Method 3
wherein an optical anisotropic material is sealed in a region surrounded by the column electrodes 13 and the drive electrode 12
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present application can provide a light modulating device that can stably maintain designed optical properties even after an encapsulation process in which a pressure is applied, such as an autoclave process, an optical device or a manufacturing method thereof. The present application can also provide a light modulating device, which can also stably maintain the orientation state of a light modulation layer while effectively securing adhesive force between upper and lower substrates, an optical device comprising the same or a manufacturing method thereof.