Invention Grant
- Patent Title: Method of eliminating poor reveal of through silicon vias
- Patent Title (中): 消除硅通孔缺点的方法
-
Application No.: US14052366Application Date: 2013-10-11
-
Publication No.: US09443764B2Publication Date: 2016-09-13
- Inventor: Jeffrey C. Maling , Anthony K. Stamper , Zeljka Topic-Beganovic , Daniel S. Vanslette
- Applicant: GLOBALFOUNDRIES, INC.
- Applicant Address: KY Grand Cayman
- Assignee: GlobalFoundries, Inc.
- Current Assignee: GlobalFoundries, Inc.
- Current Assignee Address: KY Grand Cayman
- Agency: Hoffman Warnick LLC
- Agent David Cain
- Main IPC: H01L21/768
- IPC: H01L21/768 ; H05K1/11 ; H01L23/48

Abstract:
A method and structure for eliminating through silicon via poor reveal is disclosed. In one embodiment, the method includes obtaining a wafer having a front side, a back side and partially etched and metalized through silicon vias each extending from a portion of the front side through a portion of the back side, terminating before reaching an end surface of the back side. A region of the back side of the wafer is patterned and etched to expose and reveal a portion of each of the plurality of through silicon vias. A metal layer is deposited on the back side of the wafer to form a back side metallization. The metal layer covers all of the back side including the etched region of the back side and the exposed portions of each of the through silicon vias.
Public/Granted literature
- US20150101856A1 ELIMINATING POOR REVEAL OF THROUGH SILICON VIAS Public/Granted day:2015-04-16
Information query
IPC分类: