IP Library › Granted Patent US 9,087,792
Granted Patent B2
US 9,087,792 · App. 14/020,503 · Granted Jul 21, 2015

Integration of dense and variable pitch fin structures

Inventors: Kangguo Cheng (Schenectady, NY); Matthew E. Colburn (Schenectady, NY); Bruce B. Doris (Brewster, NY); Ali Khakifirooz (Mountain View, CA)
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
H01L21/3086H01L21/845H01L27/0886H01L27/10826H01L27/1104H01L29/0657
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Quick Facts
Patent No.
US 9,087,792
App. No.
14/020,503
Granted
Jul 21, 2015
Kind
B2
Abstract

Semiconductor devices include a first set of fins having a uniform fin pitch that is less than half a minimum fin pitch for an associated lithography process; and a second set of fins having a variable fin pitch that is less the minimum fin pitch for the associated lithography process but greater than half the minimum fin pitch for the associated lithography process.

Claims (6)

1. A semiconductor device, comprising:

a first set of fins having a uniform fin pitch that is less than half a minimum fin pitch for a lithography process being used; and

a second set of fins having a variable fin pitch that is less the minimum fin pitch for the lithography process but greater than half the minimum fin pitch for the lithography process.

2. The semiconductor device of claim 1 , comprising one or more static random access memory cells formed from the second set of fins.

3. The semiconductor device of claim 1 , wherein the fins stand on a substrate layer.

4. The semiconductor device of claim 1 , wherein the fins are formed from amorphous carbon.

Assignments (5)
RELEASE OF SECURITY INTEREST Recorded Nov 20, 2020
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: GLOBALFOUNDRIES INC.
Reel/Frame 054636/0001 →
SECURITY AGREEMENT Recorded Nov 29, 2018
From: GLOBALFOUNDRIES INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 049490/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 5, 2015
From: GLOBALFOUNDRIES U.S. 2 LLC; GLOBALFOUNDRIES U.S. INC.
To: GLOBALFOUNDRIES INC.
Reel/Frame 036779/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 3, 2015
From: INTERNATIONAL BUSINESS MACHINES CORPORATION
To: GLOBALFOUNDRIES U.S. 2 LLC
Reel/Frame 036550/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 6, 2013
From: CHENG, KANGGUO; COLBURN, MATTHEW E.; DORIS, BRUCE B.; KHAKIFIROOZ, ALI
To: INTERNATIONAL BUSINESS MACHINES CORPORATION
Reel/Frame 031154/0464 →
Continuity (2)
Continuation 13961336 · Aug 7, 2013
Related Publication 20150041812A1 · Feb 12, 2015