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.:
Date of Patent:
Feb. 12, 2019
Filed:
Jun. 09, 2017
Taiwan Semiconductor Manufacturing Company Ltd., Hsinchu, TW;
Yuichiro Yamashita, Hsinchu, TW;
Hsueh-Liang Chou, Hsinchu County, TW;
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD., Hsinchu, TW;
Abstract
The present disclosure provides a photodiode device, which includes a semiconductor substrate, a well region in the semiconductor substrate of a first dopant type, a first doped region of the first dopant type in the well region, and a second doped region of a second dopant type disposed in the well region and over the first doped region. The second doped region comprises first recesses exposed through a surface of the second doped region, and a first portion of the second doped region on the surface comprises a first doping concentration of the second dopant type greater than a second doping concentration of a second portion of the second doped region away from the first recesses.