Surface topology improvement method for plug surface areas
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 21, 2009
Grant Date -
Jun 7, 2007
app pub date -
May 1, 2006
filing date -
Dec 2, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The surface topology of a plug surface area-containing surface of a semiconductor device can be improved by removing material to create a first planarized surface with at least one plug surface area, typically a tungsten or copper plug area, comprising a recessed region. A material is deposited onto the first planarized surface, to create a material layer, and into the upper portion of the recessed region. The material layer is removed to create a second planarized surface with the material maintained in the upper portion of the recessed region. To form a semiconductor phase change memory device, a phase change element is formed between the at least one plug area, acting as a first electrode, at the second planarized surface and a second electrode.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully