Light Control Unit Buffer Member for Window Edge Compression
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Solution Overview
Problem
The light control sheet in window devices for automobiles is prone to compression and potential short circuits when its edges are held in the window frame, leading to deformation and peeling off due to forces exerted during opening and closing operations.
Innovation Solution
A light control unit with a buffer member having higher hardness and thickness than the light control sheet is positioned outside the sheet, absorbing compression forces from the window frame and preventing edge compression and short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the edge of the light control sheet is located at the edge of the window glass to prevent light leakage, then the light control effect is improved, but the edge of the light control sheet is compressed and deformed when the window is opened/closed
Solution Approach 1:
A buffer member with higher hardness than the light control sheet is positioned between the light control sheet edge and the window frame holding section. This intermediary component absorbs the compression force from the window frame during window opening/closing operations, preventing the force from being transmitted to the light control sheet edge, thereby preventing deformation while maintaining the light control effect
2Device complexity
If the edge of the light control sheet is held in the window frame, then the window structure is simplified, but compression forces cause peeling off of the light control sheet
Solution Approach 1:
The buffer member serves as a mediator between the window frame and the light control sheet. It absorbs compression forces during window operation, preventing these forces from reaching the adhesive layer that bonds the light control sheet to the window glass, thereby preventing peeling while maintaining the simplified window structure
3Ease of manufacture
If the edge of the light control sheet is held in the window frame, then the installation is simplified, but short circuits occur due to compression contact between conductive layers
Solution Approach 1:
The buffer member acts as a protective intermediary between the window frame and the light control sheet edges. By absorbing compression forces during window opening/closing, it prevents the transparent conductive layers from being compressed together and making unintended contact, thereby preventing short circuits while maintaining easy installation
Solution Approach 2:
The buffer member provides beforehand cushioning by being positioned in advance between the light control sheet and window frame. Its higher hardness and elastic properties allow it to absorb compression forces before they can damage the light control sheet or cause electrical short circuits, ensuring reliable operation
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 buffer member effectively reduces compression forces on the light control sheet, preventing deformation and short circuits, ensuring reliable operation and longevity of the window light control device.
Implementation Method 1
a buffer member 50 having a higher hardness than the light control sheet 40 and a larger thickness in a thickness direction than the light control sheet 40 is located outside the light control sheet 40
Data Source
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AI summary
A light control unit includes a light control sheet and a buffer member. The light control sheet includes a pair of transparent conductive layers and a light control layer that is located between the pair of transparent conductive layers and that contains a liquid crystal composition. The light control sheet is bonded to a surface of a transparent plate having an edge that is held in a window frame. The buffer member has a harder and thicker portion than the light control sheet. The buffer member is located outside an edge of the light control sheet at the edge of the transparent plate on the surface.