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.

Date of Patent:
Mar. 19, 2019

Filed:

Oct. 24, 2017
Applicant:

Globalfoundries Inc., Grand Cayman, KY;

Inventors:

Ruilong Xie, Niskayuna, NY (US);

Youngtag Woo, San Ramon, CA (US);

Daniel Chanemougame, Niskayuna, NY (US);

Bipul C. Paul, Mechanicville, NY (US);

Lars W. Liebmann, Mechanicville, NY (US);

Heimanu Niebojewski, Cohoes, NY (US);

Xuelian Zhu, San Jose, CA (US);

Lei Sun, Altamont, NY (US);

Hui Zang, Guilderland, NM (US);

Assignee:

GLOBALFOUNDRIES Inc., Grand Cayman, KY;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/8234 (2006.01); H01L 21/768 (2006.01); H01L 23/522 (2006.01); H01L 27/088 (2006.01); H01L 23/528 (2006.01);
U.S. Cl.
CPC ...
H01L 21/823475 (2013.01); H01L 21/76816 (2013.01); H01L 21/76877 (2013.01); H01L 21/823431 (2013.01); H01L 23/528 (2013.01); H01L 23/5226 (2013.01); H01L 27/0886 (2013.01);
Abstract

One illustrative method disclosed includes, among other things, forming an initial gate-to-source/drain (GSD) contact structure and an initial CB gate contact structure, wherein an upper surface of each of these contact structures are positioned at a first level. In one example, this method also includes forming a masking layer that covers the initial CB gate contact structure and exposes the initial GSD contact structure and, with the masking layer in position, performing a recess etching process on the initial GSD contact structure so as to form a recessed GSD contact structure, wherein a recessed upper surface of the recessed GSD contact structure is positioned at a second level that is below the first level.


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