Electrolyte Adhesive Tape for Residue-Free Electrical Detachment
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Solution Overview
Problem
Current adhesive tapes for electronic devices are not easily detachable without leaving remnants on the substrates, and their production is complex due to non-uniform dimensions of conductive layers, making them difficult to produce and use in reworking or repair processes.
Innovation Solution
A double-sided adhesive tape with a first layer of adhesive containing an electrolyte, a second electrically conductive adhesive layer, and an electrically conductive carrier layer, where the layers are stacked such that none laterally protrude, allowing for easy production and detachment by applying a voltage to separate the tape from the substrate without leaving residues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If adhesive tapes are made detachable without remnants, then ease of repair is improved, but manufacturing complexity increases due to non-uniform dimensions of conductive layers
Solution Approach 1:
The adhesive tape is divided into three distinct functional layers: a first adhesive layer containing electrolyte for electrical detachment, a conductive carrier layer for structural support and electrical conduction, and a second adhesive layer for bonding. This segmentation allows each layer to be optimized independently, enabling remnant-free detachment while simplifying manufacturing through standardized layer production.
Solution Approach 2:
The conductive carrier layer acts as an intermediary between the two adhesive layers, providing a stable platform that enables electrical detachment functionality while maintaining uniform dimensions. This intermediary structure allows the adhesive layers to be produced with consistent dimensions, reducing manufacturing complexity despite the added detachment functionality.
2Reliability
If adhesive tapes use complex multi-layer structures for electrical detachment, then reliability of detachment is improved, but ease of manufacture deteriorates due to separate diecutting and assembly steps
Solution Approach 1:
The patent combines the conductive carrier layer with the adhesive layers into an integrated three-layer structure where the conductive layer is sandwiched between two adhesive layers. This merging eliminates the need for separate diecutting and assembly steps, as the entire structure can be produced as a single integrated component, improving ease of manufacture while maintaining reliable electrical detachment functionality.
Solution Approach 2:
The conductive carrier layer serves multiple functions simultaneously: it provides structural support for the adhesive layers, enables electrical conduction for detachment, and acts as a barrier between the adhesive layers. This multi-functionality reduces the need for additional components and assembly steps, simplifying manufacturing while ensuring reliable detachment.
3Productivity
If adhesive tapes are designed for electrical detachment, then productivity of repair processes is improved, but device complexity increases due to extension portions of conductive layers
Solution Approach 1:
The patent extracts the electrical detachment functionality from complex extension portions and concentrates it in the electrolyte-containing first adhesive layer. By removing the need for conductive layer extensions, the design achieves electrical detachment capability with a simpler, more compact structure that improves repair productivity without adding device complexity.
Solution Approach 2:
Instead of adding conductive extensions to enable electrical detachment, the patent inverts the approach by placing the conductive carrier layer in the middle and using the electrolyte in the adhesive layer to achieve detachment. This inverted structure eliminates the need for complex extensions while maintaining or improving productivity of repair processes.
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 adhesive tape can be easily and reliably detached from substrates without leaving residues, simplifying the reworking and repair processes, and its production is simplified due to uniform dimensions, maintaining peel adhesion before separation.
Implementation Method 1
a first layer of adhesive (D), the layer (D) comprising at least one electrolyte
Implementation Method 2
applying a voltage to separate the tape from the substrate
Data Source
AI summary
An adhesive tape, and adhesive tape assembly, that includes: a first layer of adhesive (D), the layer (D) comprising at least one electrolyte; a second layer of adhesive (C), the layer (C) being electrically conductive; and an electrically conductive carrier layer (T), the carrier layer (T) disposed between the first layer (D) and the second layer (C). Further, the layers (D), (T), and (C) are disposed one above another such that none of the layers (D), (T), and (C) laterally protrudes beyond any of the other layers (D), (T), and (C). The adhesive tape assembly can further include a first substrate (A) that is electrically conductive, a second substrate (B) disposed on a face of the second layer (C) that is opposite the carrier layer (T), and wherein the second layer (C) laterally protrudes beyond the substrate (B) such that the layer (C) has an exposed face.