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:
Sep. 01, 2020
Filed:
Jan. 29, 2019
Tessera, Inc., San Jose, CA (US);
Injo Ok, Loudonville, NY (US);
Balasubramanian Pranatharthiharan, Watervliet, NY (US);
Soon-Cheon Seo, Glenmont, NY (US);
Charan V. V. S. Surisetty, Clifton Park, NY (US);
Tessera, Inc., San Jose, CA (US);
Abstract
A method of forming a semiconductor structure includes forming a middle-of-line (MOL) oxide layer in the semiconductor structure. The MOL oxide layer including multiple gate stacks formed on a substrate. A nitride layer is formed over a silicide in the MOL oxide layer. At least one self-aligned contact area (CA) element is formed within the nitride layer. The MOL oxide layer is selectively recessed on a first side and a second side of the at least one self-aligned CA element leaving remaining portions of the MOL oxide layer on the nitride layer and a nitride. A nitride cap of the plurality of gate stacks is selectively recessed. An air-gap oxide layer is deposited for introducing one or more air-gaps in the deposited air-gap oxide layer. The air gap oxide layer is reduced to the at least one self-aligned CA element and the nitride layer.