Organic Multi-Channel Optoelectronic Sensors For Smart Wristbands

Tech ID: 30190 / UC Case 2019-103-0

Patent Status

Country Type Number Dated Case
United States Of America Published Application 0192549-A1 06/23/2022 2019-103
Patent Cooperation Treaty Published Application WO 2021/067400 04/08/2021 2019-103

Brief Description

This invention is a printed, flexible, two-channel reflectance oximeter able to collect PPG signals using red and near- infrared (NIR) (or green) organic light-emitting diodes (OLEDs) and organic photodiodes (OPDs). Inverse-variance weighting and template matching algorithms are used to improve the detection of heart rate from the multi-channel PPG signals.   

Suggested uses

This invention is useful for and in wearable smart watches and wristbands.


This varied reflectance oximeter sensor has varying device geometry, light emitter and detector spacing.  In certain embodiments, an optical barrier between the emitter and the detector is provided to maximize sensor performance.

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