Stretchable Circuit Board with Movable Terminal Alignment
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Solution Overview
Problem
Existing stretchable circuit boards face challenges in easily aligning and connecting external terminals to corresponding connection terminals of external devices, leading to misalignment issues.
Innovation Solution
A stretchable circuit board design featuring a first and second stretchable base with a conductive layer, adhesive, biological electrodes, external terminals, and movable terminal attachment members, allowing for easy alignment and connection by exposing at least a biological-body-side surface of each terminal attachment member on the adhesive, enabling movement in the in-plane direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If terminal attachment members are fixed in position on the stretchable circuit board, then structural stability is improved, but alignment ease with external device connection terminals deteriorates
Solution Approach 1:
The terminal attachment member is designed to be movable relative to the stretchable circuit board, allowing it to dynamically adjust its position during alignment with connection terminals of external devices. This dynamic capability enables easy alignment while the stretchable base maintains overall structural stability when stretched or deformed.
2Ease of operation
If terminal attachment members are exposed on the adhesive surface, then connection accessibility is improved, but manufacturing precision requirements increase
Solution Approach 1:
The terminal attachment member is positioned at a specific height above the adhesive surface, creating a vertical parameter separation. This elevation makes the attachment members accessible for connection operations while the manufacturing precision requirements are reduced because the attachment members can tolerate positional variations within the adhesive bonding area without affecting overall connection accuracy.
Data Source
AI summary
Provided is a stretchable circuit board including a first stretchable base; a stretchable conductive layer; a second stretchable base; an adhesive; biological electrodes; external terminals; and terminal attachment members, in which each biological electrode and each external terminal are included in the stretchable conductive layer, the second stretchable base is disposed so as to face the first stretchable base with the stretchable conductive layer interposed therebetween, the adhesive is configured to fix the stretchable circuit board to a biological body, each terminal attachment member is attached to an attachment portion of a corresponding connection terminal of external device to electrically connect the external terminals to the connection terminals of the external device, at least a biological-body-side surface of each terminal attachment member is exposed on the adhesive, and each terminal attachment member is movable in an in-plane direction of the stretchable circuit board.