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Title:
PROCESS FOR ELIMINATING CVD ALUMINUM SELECTIVITY LOSS WITH WARM PVD ALUMINUM
Document Type and Number:
Japanese Patent JPH10116800
Kind Code:
A
Abstract:

To deposit a planarized metal film by employing a metal deposited by hot physical vapor deposition on a dielectric surface on which a conductive material is deposited unevenly.

A dielectric layer 12 is formed on a conductive layer 14 and etched to make an opening for interconnecting the conductive layers before forming a metal interconnection 22. A physical vapor deposition(PVD) At layer 30 is then deposited on a region 26 including a deposit or a nodule of a conductive metal. When the conductive metal deposit or nodule is aluminum, a PVD layer 30 is composed of aluminum deposited at substrate temperature preferably higher than about 150°C, more preferably higher than about 250°C and most preferably higher than about 300°C. The PVD Al layer 30 preferably contains at least a trace of copper. Finally, a TiN antireflection coating is applied by PVD onto the surface 32 of the CVD/PVD Al mixture layer.


Inventors:
HOINKIS MARK
Application Number:
JP14700897A
Publication Date:
May 06, 1998
Filing Date:
April 30, 1997
Export Citation:
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Assignee:
APPLIED MATERIALS INC
International Classes:
C23C14/14; C23C14/16; C23C16/04; C23C16/20; H01L21/203; H01L21/28; H01L21/285; H01L21/768; (IPC1-7): H01L21/285; H01L21/285; C23C14/14; C23C16/20; H01L21/203
Attorney, Agent or Firm:
Yoshiki Hasegawa (4 outside)