Optical Path Control Layer Sealing Against Adhesive Penetration
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Solution Overview
Problem
The adhesive layer in switchable light-shielding films is vulnerable to penetration by external substances, leading to contamination or volatilization of solvents, which affects the performance and longevity of the film.
Innovation Solution
An optical path control device is designed with a sealing portion and dam portion to shield the adhesive layer from external factors, featuring a sealing portion that fills injection holes and a dam portion to prevent penetration, along with a manufacturing method that includes forming a protrusion and injecting sealants to enhance protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an adhesive layer is used to bond the light conversion layer and electrode, then bonding between components is achieved, but the adhesive layer becomes vulnerable to penetration by external substances such as moisture
Solution Approach 1:
The sealing portion is nested within the injection hole, creating a protective barrier that shields the adhesive layer from external substances. The sealing portion fills the injection hole and extends to cover the lower surface of the first substrate, forming a multi-layer protective structure that maintains bonding strength while preventing moisture and impurity penetration.
Solution Approach 2:
The sealing portion acts as an intermediary barrier between the adhesive layer and external substances. It is positioned at the interface where the injection hole penetrates the adhesive layer, preventing direct contact between external substances and the vulnerable adhesive layer while maintaining the structural integrity of the bonding.
2Ease of manufacture
If the adhesive layer is exposed to external substances, then manufacturing simplicity is maintained, but solvent contamination and volatilization occur
Solution Approach 1:
The sealing portion is formed by injecting sealing material into the injection hole, creating a nested protective structure that prevents solvent volatilization and contamination without adding complex external sealing mechanisms. This maintains manufacturing simplicity while effectively preventing substance loss.
Solution Approach 2:
The sealing portion uses a simple sealing material that can be easily injected and cured, providing effective protection against solvent loss without requiring complex or expensive sealing systems. The sealing material acts as a disposable barrier that prevents contamination and volatilization during device operation.
Data Source
AI summary
An optical path control device can include a first substrate having a first electrode disposed thereon, a second substrate disposed on the first substrate and having a second electrode disposed thereon, and a light conversion layer disposed between the first substrate and the second substrate and including a partition portion and a containing portion including suspended particles, where the partition portion and the containing portion are alternately disposed. The optical path control device can further include an adhesive layer disposed between the first substrate and the light conversion layer, a sealing portion disposed between the first substrate and the second substrate and surrounding the light conversion layer, and a dam portion disposed between the first substrate and the second substrate and disposed on an outside of the sealing portion.