Optical Device Barrier Layer Moisture Isolation
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Solution Overview
Problem
Conventional optical devices face manufacturing simplification and cost-saving challenges that lead to defects such as abnormal appearance and poor reliability due to direct contact between sealants and conductive materials, resulting in issues like moisture permeation and short circuits.
Innovation Solution
The optical device design includes a first and second substrate with conductive layers, a liquid crystal layer, a sealant, and a barrier layer, where the barrier layer is strategically placed to prevent moisture ingress and insulating layers are used to prevent short circuits, enhancing the device's reliability and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the sealant is in direct contact with conductive materials to simplify manufacturing and save costs, then manufacturing complexity is reduced, but reliability deteriorates due to moisture permeation and short circuits
Solution Approach 1:
The patent introduces an insulating layer as an intermediary component between the sealant and conductive materials. This insulating layer prevents direct contact, thereby blocking moisture permeation pathways and preventing short circuits while maintaining manufacturing simplicity. The insulating layer acts as a mediator that resolves the conflict between ease of manufacture and device reliability.
2Device complexity
If the sealant directly contacts conductive materials, then device complexity is reduced, but harmful factors increase due to abnormal appearance and poor reliability
Solution Approach 1:
The insulating layer serves as a protective intermediary that blocks harmful factors (moisture and electrical conductivity) from reaching the conductive materials. By placing this intermediate layer, the patent effectively prevents moisture permeation and short circuits without significantly increasing overall device complexity, as the layer can be integrated into existing manufacturing processes.
3Ease of manufacture
If conductive layers are not isolated from sealants, then manufacturing process is simplified, but appearance quality deteriorates due to abnormal appearance
Solution Approach 1:
The insulating layer acts as a barrier that prevents direct contact between sealants and conductive layers, thereby preventing abnormal appearance defects. This intermediate layer can be applied using standard coating techniques, maintaining manufacturing process simplicity while significantly improving appearance quality by preventing discoloration and defects at the interface.
Data Source
AI summary
An optical device includes: a first substrate; a second substrate disposed opposite to the first substrate; a first conductive layer disposed on the first substrate, wherein the first conductive layer includes a first surface and a third side surface connecting to the first surface; a second conductive layer disposed on the second substrate; a sealant disposed between the first conductive layer and the second conductive layer and having a first side and a second side opposite to the first side; a liquid crystal layer disposed between the first conductive layer and the second conductive layer and locating at the first side of the sealant; and a barrier layer disposed between the first conductive layer and the second conductive layer and locating at the second side of the sealant, wherein at least part of the first surface and the third side surface are not covered by the barrier layer.