Invention Grant
- Patent Title: Self-aligned lower bottom electrode
- Patent Title (中): 自对准下底电极
-
Application No.: US12619375Application Date: 2009-11-16
-
Publication No.: US08129268B2Publication Date: 2012-03-06
- Inventor: Matthew J. Breitwisch
- Applicant: Matthew J. Breitwisch
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Vazken Alexanian
- Main IPC: H01L21/4763
- IPC: H01L21/4763

Abstract:
A method of fabricating a lower bottom electrode for a memory element and a semiconductor structure having the same includes forming a dielectric layer over a semiconductor substrate having a plurality of conductive contacts formed therein to be connected to access circuitry, forming a dielectric cap layer over exposed portions of the dielectric layer and the conductive contacts, depositing a planarizing material over the dielectric cap layer, etching a via to an upper surface of each conductive contact, removing the planarizing material, depositing electrode material over the dielectric cap layer and within the vias, the electrode material contacting an upper surface of each conductive contact, and planarizing the electrode material to form a lower bottom electrode over each conductive contact.
Public/Granted literature
- US20110115087A1 SELF-ALIGNED LOWER BOTTOM ELECTRODE Public/Granted day:2011-05-19
Information query
IPC分类: