Switchable Film Seal Layout With Moisture Breach Indicators
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Solution Overview
Problem
Existing seal systems for switchable films in devices like electrochromic mirrors and laminated glass lack effective detection methods for seal breaches, which can lead to reduced durability, function, and safety issues, as breaches may not be detectable until after production or during extended use.
Innovation Solution
A seal system for switchable films that includes a first seal adherent to a conductive metal oxide electrode and a second seal encapsulating the first, with an integrated detection system using indicator materials to detect any breaches, ensuring early identification of seal failures during production or use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seal system is used to prevent water and air ingress, then reliability is improved, but difficulty of detecting and measuring seal breaches increases
Solution Approach 1:
The patent incorporates indicator materials that undergo color changes or other detectable visual changes when exposed to moisture or other environmental factors. This allows seal breaches to be easily detected through visual inspection, transforming an otherwise difficult-to-detect failure mode into an obvious visual signal that maintains reliability while solving the detection problem.
Solution Approach 2:
The patent uses indicator materials as intermediary substances between the seal system and the detection mechanism. These indicators act as mediators that translate seal integrity status into visible signals, allowing inspectors to detect seal breaches without directly examining the seal itself, thus resolving the contradiction between maintaining seal integrity and enabling easy detection.
2Manufacturing precision
If the seal is applied before the switching material, then manufacturing precision is improved, but harmful factors increase due to reaction between uncured seal and switching material
Solution Approach 1:
The patent separates the seal application process from the switching material placement by using a distinct seal layer that is applied independently. This extraction of the seal function allows the seal to be applied with high precision while preventing direct contact and harmful chemical reactions with the switching material, as the seal acts as a protective barrier.
Solution Approach 2:
The patent employs a seal system designed as a disposable protective layer that prevents harmful reactions during manufacturing. The seal material is formulated to be non-reactive with switching materials, effectively sacrificing the seal's chemical stability to protect the valuable switching material from degradation.
3Reliability
If a detection system is integrated into the seal, then reliability is improved through early breach detection, but device complexity increases
Solution Approach 1:
The patent integrates detection functionality directly into the seal material through indicator substances that change color or appearance when exposed to environmental factors. This approach maintains reliability by enabling early breach detection while avoiding increased device complexity, as the detection mechanism is built into the seal itself rather than requiring separate sensors or systems.
Solution Approach 2:
The patent creates a multi-functional seal system that simultaneously provides sealing, protection, and detection functions. The indicator materials embedded in the seal allow the same component to serve multiple purposes: preventing environmental ingress and detecting seal failures, thereby improving reliability without increasing overall device complexity.
Data Source
AI summary
The disclosure provides, in part a seal system for sealing a film. The disclosure further provides, in part, a sealed film comprising a first and a second substrate; a first and a second electrode disposed on the surface of at least one of the substrates; a switching material disposed between the first and second substrates; a first seal and a second seal; the first seal disposed along an edge of the switching material, separating the switching material from the second seal.