Transparent Conductive Screen Electrode for Biopotential Monitoring
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Solution Overview
Problem
Conventional wearables face challenges in integrating biopotential signal detection and processing without increasing the number of components, which affects space and cost.
Innovation Solution
A smartwatch with a multiresolution touch interface that includes a transparent conductive screen with a first electrode, a display layer, and an array of IR sensors, along with a second and third electrode for bioimpedance and ECG data measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional separate sensor is added for detecting biopotential signals, then the sensor detection capability is improved, but the device complexity and component count increase
Solution Approach 1:
The patent combines the touch screen electrode and the biopotential sensor electrode into a single integrated electrode structure. The transparent conductive layer serves dual functions as both the touch interface electrode and the ECG/bioimpedance sensing electrode, eliminating the need for separate sensor components while maintaining detection capabilities.
Solution Approach 2:
The electrode structure is designed to perform multiple functions simultaneously: it serves as the touch screen interface for user interaction, the ECG sensor for cardiac monitoring, and the bioimpedance sensor for respiratory and other physiological measurements. This multi-functional design resolves the contradiction by avoiding additional components.
2Measurement precision
If a traditional separate sensor is added for detecting biopotential signals, then the sensor detection capability is improved, but the device size and space requirements increase
Solution Approach 1:
The patent merges the biopotential sensing function into the existing touch screen electrode structure. The transparent conductive layer on the display surface serves as both the touch interface and the sensing electrode, requiring no additional space while enabling biopotential detection.
Solution Approach 2:
The integrated electrode performs multiple sensing functions (touch detection, ECG, bioimpedance) within the same physical structure and space, eliminating the need for separate sensor components and reducing overall device footprint.
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
Enables biomedical monitoring by integrating sensor capabilities into the display device without increasing component count, providing efficient space utilization and cost-effectiveness.
Implementation Method 1
The array of IR sensors is configured to detect infrared light transmitted through the transparent conductive screen
Implementation Method 2
The first electrode and the second electrode of the smartwatch together are configured to measure a bioimpedance of a user of the smartwatch
Implementation Method 3
The first electrode and the third electrode of the smartwatch together are configured to measure ECG data associated with the user
Data Source
AI summary
A smartwatch includes a multiresolution touch interface, a second electrode, and a third electrode. The transparent conductive screen includes a first electrode, a display layer, and an array of IR sensors. The display layer of the transparent conductive screen includes a plurality of display pixels, and is positioned beneath a bottom surface of the transparent conductive screen. The array of IR sensors of the transparent conductive screen is configured to detect infrared light transmitted through the transparent conductive screen. The second electrode is communicatively coupled to the first electrode. The first electrode and the second electrode together are configured to measure a bioimpedance of a user of the smartwatch. The third electrode is coupled to a bottom portion of the smartwatch, and is configured to contact an extremity of the user. The first electrode and the third electrode together are configured to measure ECG data associated with the user.