Invention Grant
- Patent Title: Advanced through substrate via metallization in three dimensional semiconductor integration
-
Application No.: US15289187Application Date: 2016-10-09
-
Publication No.: US10396013B2Publication Date: 2019-08-27
- Inventor: Daniel C Edelstein , Chih-Chao Yang
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Jeffrey S LaBaw; Steven J Meyers
- Main IPC: H01L23/48
- IPC: H01L23/48 ; H01L21/768 ; H01L21/822 ; H01L27/06 ; H01L25/065 ; H01L23/00 ; H01L23/532

Abstract:
An advanced through silicon via structure for is described. The device includes a substrate including integrated circuit devices. A high aspect ratio through substrate via is disposed in the substrate. The through substrate via has vertical sidewalls and a horizontal bottom. The substrate has a horizontal field area surrounding the through substrate via. A metallic barrier layer is disposed on the sidewalls of the through substrate via. A surface portion of the metallic barrier layer has been converted to a nitride surface layer by a nitridation process. The nitride surface layer enhances the nucleation of subsequent depositions. A first metal layer fills the through substrate via and has a recess in an upper portion. A second barrier layer is disposed over the recess. A second metal layer is disposed over the second barrier layer and creates a contact.
Public/Granted literature
- US20170345739A1 ADVANCED THROUGH SUBSTRATE VIA METALLIZATION IN THREE DIMENSIONAL SEMICONDUCTOR INTEGRATION Public/Granted day:2017-11-30
Information query
IPC分类: