US 11,864,877 B2
Health monitoring device including pinned photodiode
Assim Boukhayma, Neuchatel (CH); Antonino Caizzone, Milvignes (CH); and Christian Enz, Saint-Aubin-Sauges (CH)
Assigned to ECOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE (EPFL), Lausanne (CH)
Filed by ECOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE (EPFL), Lausanne (CH)
Filed on Jan. 4, 2023, as Appl. No. 18/149,690.
Application 18/149,690 is a continuation of application No. 16/631,642, granted, now 11,612,330, previously published as PCT/EP2018/069358, filed on Jul. 17, 2018.
Claims priority of application No. PCT/EP2017/068502 (WO), filed on Jul. 21, 2017.
Prior Publication US 2023/0157560 A1, May 25, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/024 (2006.01); H01L 27/14 (2006.01); H04N 25/00 (2023.01)
CPC A61B 5/02427 (2013.01) [H01L 27/14 (2013.01); H04N 25/00 (2023.01)] 16 Claims
OG exemplary drawing
 
1. A photoplethysmography (PPG) sensing device, the device comprising:
a pulsed light source,
at least one pixel for light-to-charge conversion to create photo-generated electrons, comprising:
a pinned photodiode including a well,
a sense node, and
a transfer gate having its source electronically connected to one electronic connection node of the pinned photodiode, and being configured to act as a transfer gate between the pinned photodiode and the sense node to transfer at least part of any integrated photo-generated electrons to the sense node for a read-out, with a grid of the transfer gate being connected to a DC power source.