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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11227958 B1

PDFFull Text
Date of Patent:
Jan. 18, 2022

Filed:

Apr. 30, 2020

Circular grating structure for photonic device

Applicant:

Taiwan Semiconductor Manufacturing Co., Ltd., Hsinchu, TW;

Inventors:

Tao-Cheng Liu, Hsinchu, TW;

Tsai-Hao Hung, Hsinchu, TW;

Ying-Hsun Chen, Hsinchu, TW;

Assignee:

TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD., Hsinchu, TW;

Attorney:

Seed IP Law Group LLP

Primary Examiner:

Eduardo A Rodela

Assistant Examiner:

Christopher M Roland

Int. Cl.
CPC ...
H01L 31/18 (2006.01); H01L 31/0232 (2014.01); H01L 31/0352 (2006.01); H01L 31/054 (2014.01); H01L 31/02 (2006.01); H01L 31/04 (2014.01);
U.S. Cl.
CPC ...
H01L 31/02024 (2013.01); H01L 31/02327 (2013.01); H01L 31/054 (2014.12); H01L 31/18 (2013.01); H01L 31/0352 (2013.01); H01L 31/04 (2013.01);
Abstract

An integrated circuit includes a photodetector. The photodetector includes a circular optical grating formed in an annular trench in a semiconductor substrate. The circular optical grating includes dielectric fins and photosensitive fins positioned in the annular trench. The circular optical grating is configured to receive incident light and to direct the incident light around the annular trench through the dielectric fins and the photosensitive fins until the light is absorbed by one of the photosensitive fins.

Find Patent Forward Citations

Liu, Tao-Cheng. (2022). Circular grating structure for photonic device (U.S. Patent No. 11227958). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11227958

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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