Optical Path Control Member Adhesive Layer Thickness
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Solution Overview
Problem
Existing optical path control members, such as light blocking films, face challenges in reducing thickness and improving manufacturing ease while maintaining effective electrical connections for switchable applications.
Innovation Solution
The optical path control member incorporates a first and second substrate with electrodes, a light conversion unit, and a connection electrode system connected via an isotropic conductive adhesive layer to a printed circuit board, enhancing electrical connections and reducing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conductive adhesive layer is used to connect the switchable light blocking film and the printed circuit board, then electrical connection is achieved, but the thickness of the adhesive layer increases and the manufacturing process becomes difficult
Solution Approach 1:
The adhesive layer is segmented into multiple functional layers: a first adhesive layer for initial bonding, a second adhesive layer with conductive particles for electrical connection, and a third adhesive layer for final bonding. This segmentation allows each layer to perform its specific function optimally while controlling overall thickness.
Solution Approach 2:
The adhesive structure uses composite materials by incorporating conductive particles into the second adhesive layer, creating a multi-functional adhesive that provides both mechanical bonding and electrical conductivity. This eliminates the need for separate conductive layers, reducing thickness while maintaining connection reliability.
2Length of stationary object
If the thickness of the adhesive layer is reduced, then the overall thickness of the optical path control member is reduced, but electrical connection characteristics may deteriorate
Solution Approach 1:
The second adhesive layer contains conductive particles concentrated in specific regions to ensure electrical connection at critical interfaces. This local concentration of conductive material ensures reliable electrical connection without requiring increased overall thickness of the adhesive structure.
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 configuration improves electrical connection characteristics, reduces the overall thickness of the optical path control member, and simplifies manufacturing processes, making it suitable for thinner and more efficient display devices.
Implementation Method 1
the adhesive layer includes an isotropic conductive adhesive layer. Accordingly, the adhesive layer has conductivity in all directions
Implementation Method 2
a light conversion unit disposed between the first electrode and the second electrode
Data Source
AI summary
An optical path control member according to an embodiment includes a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed under the second substrate; a light conversion unit disposed between the first electrode and the second electrode; a connection electrode including a first connection electrode formed by exposing the first electrode and a second connection electrode formed by exposing the second electrode; and a printed circuit board electrically connected to the first connection electrode and the second connection electrode, wherein an adhesive layer disposed between the connection electrode and the printed circuit board, and the adhesive layer includes an isotropic conductive adhesive layer.