US 11,686,614 B2
Photodetecting device for detecting different wavelengths
Yen-Cheng Lu, Hsinchu County (TW); Yun-Chung Na, Hsinchu County (TW); Shu-Lu Chen, Hsinchu County (TW); Chien-Yu Chen, Hsinchu County (TW); Szu-Lin Cheng, Hsinchu County (TW); Chung-Chih Lin, Hsinchu County (TW); and Yu-Hsuan Liu, Hsinchu County (TW)
Assigned to ARTILUX, INC., Menlo Park, CA (US)
Filed by ARTILUX, INC., Menlo Park, CA (US)
Filed on Dec. 27, 2021, as Appl. No. 17/562,948.
Application 17/562,948 is a continuation of application No. 16/734,918, filed on Jan. 6, 2020, granted, now 11,255,724.
Claims priority of provisional application 62/860,264, filed on Jun. 12, 2019.
Claims priority of provisional application 62/788,931, filed on Jan. 6, 2019.
Prior Publication US 2022/0120611 A1, Apr. 21, 2022
Int. Cl. G01J 1/44 (2006.01); H01L 31/101 (2006.01)
CPC G01J 1/44 (2013.01) [H01L 31/1013 (2013.01); G01J 2001/446 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A photodetecting device, comprising:
a first photodetecting component including a substrate having a first absorption region configured to absorb photons having a first peak wavelength and to generate first photo-carriers; and
a second photodetecting component including a second absorption region configured to absorb photons having a second peak wavelength different from the first peak wavelength and to generate second photo-carriers;
wherein the first photodetecting component further comprises two first readout circuits and two first control circuits for the first photo-carriers and electrically coupled to the first absorption region;
wherein the second photodetecting component further comprises two second readout circuits and two second control circuits for the second photo-carriers and electrically coupled to the second absorption region, wherein the two second readout circuits are separated from the two first readout circuits, and the two second control circuits are separated from the two first control circuit; and
wherein the first absorption region comprises silicon, and the second absorption region comprises germanium.