Transparent Electrodes for Bio Signal Detection in Wearable Devices
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Solution Overview
Problem
Wearable electronic devices for bio signal measurement face challenges in integrating electrodes without compromising aesthetics or increasing device size, as exposed electrodes interfere with touch input units and require additional space for connecting parts.
Innovation Solution
The integration of transparent electrodes or conductive printed electrodes on the outer surface of the device, combined with a metallic decoration for electrical connection, allows for both aesthetic design and compact miniaturization, with connecting members ensuring electrical connectivity without visual exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional exposed electrodes are used for bio signal detection, then the device can measure bio signals, but the appearance is spoiled and the device size increases
Solution Approach 1:
The patent applies transparent electrodes that are visually invisible or minimally visible on the outer surface of the device. This allows the electrodes to maintain their electrical functionality for bio signal detection while being aesthetically pleasing and not spoiling the appearance of the device.
Solution Approach 2:
The patent combines the electrode function with the outer surface structure of the device. The electrodes are integrated into the housing or cover plate, merging the detection function with the aesthetic outer surface, thereby eliminating the need for separate exposed electrodes.
2Reliability
If traditional exposed electrodes with connecting parts are used, then the device can detect bio signals, but the device size increases due to additional space requirements
Solution Approach 1:
The patent merges the electrode and connecting part functions into a single integrated structure. The transparent electrode is directly connected to the circuit board through the housing structure, eliminating the need for separate connecting parts such as conductive pads, pogo pins, or c-clips, thereby reducing device volume.
Solution Approach 2:
The patent extracts the connecting parts from the traditional electrode assembly and integrates them into the housing structure. This removes the need for additional connecting components and reduces the overall space required for electrode installation.
3Reliability
If traditional exposed electrodes are used, then the device can measure bio signals, but interference occurs with the touch input unit
Solution Approach 1:
The transparent electrodes are visually invisible and do not interfere with the touch input unit's operation. The transparency allows the touch screen to function normally without visual or physical interference from the electrodes.
Solution Approach 2:
The patent positions the electrodes in a different spatial dimension relative to the touch input unit. The transparent electrodes are placed on the outer surface in a configuration that does not overlap with the touch-sensitive areas, allowing both functions to operate independently without interference.
Data Source
AI summary
A portable bio information measuring device is provided. The portable bio information measuring device includes a circuit board placed in the portable bio information measuring device, a housing accommodating the circuit board, an electrode to measure bio information, and a connecting member electrically connecting the circuit board with the electrode. The electrode is configured as at least one of a transparent electrode, a conductive decoration, and a conductive printed electrode.