Stretchable Insulating Film with Siloxane Surface for Stable SAM Formation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional stretchable insulating films face challenges in maintaining stretchability and insulating properties, especially when subjected to small strain conditions, and they are unable to form self-assembled monolayers due to the absence of oxide structures.
Innovation Solution
A stretchable insulating film is developed, comprising a first insulating layer with an elastomer and a second insulating layer with a cyclic siloxane polymer framework, allowing for improved stretchability and insulating properties while enabling the formation of a self-assembled monolayer on the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an inorganic insulating film (SiOx, SiNx, AIOx) is deposited on an elastomer film to improve insulating properties and enable SAM formation, then charge mobility characteristics improve, but the elastomer is damaged by plasma, heat, and solvents during deposition, and the inorganic material peels off or cracks under stretching
Solution Approach 1:
The patent uses a composite insulating film structure consisting of an elastomer base layer combined with an inorganic insulating layer. This composite structure allows the elastomer to provide stretchability while the inorganic layer provides insulating properties and enables SAM formation, resolving the contradiction between maintaining stretchability and achieving reliable insulating characteristics.
Solution Approach 2:
The patent modifies the deposition parameters and process conditions to reduce damage to the elastomer substrate. By optimizing deposition temperature, plasma power, and solvent composition, the patent achieves successful inorganic layer formation while minimizing elastomer degradation, thus maintaining both insulating reliability and stretchability.
2Ease of manufacture
If conventional stretchable insulating films are manufactured by coating with elastomer and azide-based curing agent followed by UV and heat treatment, then insulating film formation is achieved, but chemical changes and thermal deformation of the lower substrate occur during curing
Solution Approach 1:
The patent introduces an intermediary curing system that decouples the curing process from direct UV and heat exposure of the elastomer substrate. By using a two-component curing mechanism where one component remains dormant until mixed with the other, the patent enables complete curing without subjecting the substrate to damaging thermal or UV conditions during the curing process.
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 proposed film achieves enhanced stretchability and insulating properties, maintaining electrical stability even after stretching or repeated stretching, and facilitates the formation of a self-assembled monolayer, improving charge mobility characteristics.
Implementation Method 1
a self-assembled monolayer (SAM) is formed using ODTS (octadecyltrichlorosilane), ODTMS (octadecyltrimethoxysilane), etc. on the surface of the insulating film
Implementation Method 2
elastomers such as SEBS and PDMS, which are widely used as stretchable insulating films, do not have oxide structures such as Si—O, Al—O, etc. that exist in inorganic insulating films, and thus they cannot form self-assembled monolayers through chemical reactions with SAM materials
Implementation Method 3
a first insulating layer having stretchability and a second insulating layer on the first layer and having non-stretchability, wherein the first insulating layer may include an elastomer
Data Source
AI summary
A stretchable insulating film may include a first insulating layer having stretchability and a second insulating layer on the first layer and having non-stretchability. The first insulating layer may include an elastomer and the second insulating layer may include a cyclic siloxane polymer framework. An electronic device may include the stretchable insulating film. A method of manufacturing the stretchable insulating film may include forming the first insulating layer and forming the second insulating layer. The forming the first insulating layer may include coating a composition including the elastomer or depositing the elastomer. The forming the second insulating layer may include injecting a cyclic siloxane monomer and an initiator on the first insulating layer into a reactor equipped with a heat source and performing a polymerization reaction by low-temperature vapor deposition.