Invention Grant
- Patent Title: Self aligned via in integrated circuit
- Patent Title (中): 在集成电路中自对准通孔
-
Application No.: US14749140Application Date: 2015-06-24
-
Publication No.: US09373582B1Publication Date: 2016-06-21
- Inventor: Yannick Feurprier , Joe Lee , Lars W. Liebmann , Yann Mignot , Terry A. Spooner , Douglas M. Trickett , Mehmet Yilmaz
- Applicant: International Business Machines Corporation , Tokyo Electron Limited , STMicroelectronics, Inc.
- Applicant Address: US NY Armonk US TX Coppell JP
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION,STMICROELECTRONICS, INC.,TOKYO ELECTRON LIMITED
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION,STMICROELECTRONICS, INC.,TOKYO ELECTRON LIMITED
- Current Assignee Address: US NY Armonk US TX Coppell JP
- Agency: Cantor Colburn LLP
- Agent Steven Meyers
- Main IPC: H01L23/522
- IPC: H01L23/522 ; H01L21/768 ; H01L23/528 ; H01L23/532

Abstract:
A method for forming a via in an integrated circuit comprises patterning a first opening in a first hardmask, the first hardmask disposed on a first organic self-planarizing polymer (OPL) layer, removing an exposed portion of the first OPL layer to define a cavity, removing an exposed portion of a second hardmask in the cavity, removing an exposed portion of a first dielectric layer disposed under the second hardmask to further define the cavity, removing an exposed portion of a first cap layer in the cavity, removing an exposed portion of a second dielectric layer to further define the cavity, removing an exposed portion of a second cap layer to further define the cavity, removing an exposed portion of a liner layer over a second conductive material in the cavity, and depositing a conductive material in the cavity.
Information query
IPC分类: