Invention Grant
- Patent Title: Bond pad having ruthenium directly on passivation sidewall
- Patent Title (中): 焊盘直接在钝化侧壁上具有钌
-
Application No.: US14278613Application Date: 2014-05-15
-
Publication No.: US09281275B2Publication Date: 2016-03-08
- Inventor: Brian Zinn
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Tuenlap D. Chan; Frank D. Cimino
- Main IPC: H01L21/311
- IPC: H01L21/311 ; H01L23/532 ; H01L23/00 ; H01L21/768

Abstract:
A method of forming bond pads includes providing a substrate including an integrated circuit (IC) device formed thereon having an oxidizable uppermost metal interconnect layer which provides a plurality of bond pads that are coupled to circuit nodes on the IC device. The plurality of bond pads include a metal bond pad area. At least one passivation layer provides a trench including dielectric sidewalls above the metal bond pad area. A ruthenium (Ru) layer is deposited directly on the dielectric sidewalls and directly on the metal bond pad area, which removes the need for a barrier layer lining the dielectric sidewalls of the trench. The Ru layer is patterned to provide a bond pad surface for the plurality of bond pads.
Public/Granted literature
- US20150333010A1 BOND PAD HAVING RUTHENIUM DIRECTLY ON PASSIVATION SIDEWALL Public/Granted day:2015-11-19
Information query
IPC分类: