US 12,302,011 B2
Photosensitive sensor and corresponding optical signal acquisition method
Frederic Lalanne, Bernin (FR); and Pierre Malinge, Bernin (FR)
Assigned to STMicroelectronics (Crolles 2) SAS, Crolles (FR)
Filed by STMicroelectronics (Crolles 2) SAS, Crolles (FR)
Filed on Aug. 9, 2022, as Appl. No. 17/883,764.
Claims priority of application No. 2108657 (FR), filed on Aug. 12, 2021.
Prior Publication US 2023/0051181 A1, Feb. 16, 2023
Int. Cl. H04N 25/77 (2023.01); G01J 1/44 (2006.01); H04N 5/33 (2023.01); H04N 25/42 (2023.01); H04N 25/75 (2023.01)
CPC H04N 25/42 (2023.01) [G01J 1/44 (2013.01); H04N 5/33 (2013.01); H04N 25/75 (2023.01); H04N 25/77 (2023.01); G01J 2001/4473 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A photosensitive sensor, comprising:
at least one pixel capable of operating in a global shutter mode and in a rolling shutter mode, said at least one pixel including:
a photosensitive region configured to photogenerate electric charges;
a first transfer gate configured to transfer said photogenerated electric charges from the photosensitive region to a transfer node;
a first source-follower transistor configured to transmit a reading signal to a read node when the at least one pixel is operating in the global shutter mode in response to a potential of the photogenerated electric charges on the transfer node;
a second transfer gate configured to transfer said photogenerated electric charges from the photosensitive region to the read node when the at least one pixel is operating in the rolling shutter mode; and
a second source-follower transistor configured to transmit an output signal on a read line in response to a potential on the read node when the at least one pixel is operating in both the global shutter mode and the rolling shutter mode.