Invention Grant
- Patent Title: Define via in dual damascene process
- Patent Title (中): 通过双镶嵌工艺定义
-
Application No.: US10603041Application Date: 2003-06-24
-
Publication No.: US07160799B2Publication Date: 2007-01-09
- Inventor: Steven Alan Lytle , Thomas Michael Wolf , Allen Yen
- Applicant: Steven Alan Lytle , Thomas Michael Wolf , Allen Yen
- Applicant Address: US PA Allentown
- Assignee: Agere Systems Inc.
- Current Assignee: Agere Systems Inc.
- Current Assignee Address: US PA Allentown
- Main IPC: H01L21/4763
- IPC: H01L21/4763

Abstract:
The invention includes a process for manufacturing an integrated circuit, comprising providing a substrate comprising a dielectric layer over a conductive material, depositing a hardmask over the dielectric layer, applying a first photoresist over the hardmask and photodefining a trench, etching the hard mask and partially etching the dielectric to form a trench having a bottom, stripping the photoresist, applying a second photoresist and photodefining a slit across the trench, selectively etching the dielectric from the bottom of the trench down to the underlying conductive material. Both the hardmask and the second photoresist are used as a mask. Later, a connection to the underlying metal is formed and integrated circuits made thereby.
Public/Granted literature
- US20050067710A1 Define via in dual damascene process Public/Granted day:2005-03-31
Information query
IPC分类: