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:
Dec. 25, 2018
Filed:
Jun. 21, 2017
Applicant:
Himax Imaging Limited, Tainan, TW;
Inventors:
Yang Wu, Tainan, TW;
Inna Patrick, Tainan, TW;
Assignee:
Himax Imaging Limited, Tainan, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/0352 (2006.01); H01L 31/18 (2006.01); H01L 27/146 (2006.01);
U.S. Cl.
CPC ...
H01L 27/14643 (2013.01); H01L 27/1463 (2013.01); H01L 27/14612 (2013.01); H01L 27/14689 (2013.01);
Abstract
A photodiode (PD) of a complementary metal-oxide-semiconductor (CMOS) image sensor includes a top PD of a second type disposed in a first-type layer; and a bottom PD of the second type disposed in the first-type layer and below the top PD, the bottom PD including at least one sub-photodiode (sub-PD) of the second type connected to the top PD and at least one sub-well of the first type surrounded by the at least one sub-PD.