Semiconductor device manufacturing: process – Coating with electrically or thermally conductive material – To form ohmic contact to semiconductive material
Reexamination Certificate
2005-06-07
2005-06-07
Wojciechowicz, Edward (Department: 2815)
Semiconductor device manufacturing: process
Coating with electrically or thermally conductive material
To form ohmic contact to semiconductive material
C438S618000, C438S621000, C438S006000, C438S201000, C438S629000, C438S637000, C257S503000
Reexamination Certificate
active
06902998
ABSTRACT:
A semiconductor device is manufactured by forming a first insulating layer on a semiconductor substrate. First contact pads and second contact pads are formed that penetrate through the first insulating layer and are electrically connected to the semiconductor substrate. A second insulating layer is formed that has guide contact holes that expose upper surfaces of the first contact pads. An etch stopper is formed on bottoms and sidewalls of the guide contact holes of the second insulating layer. Bit lines are formed that are electrically connected to the semiconductor substrate by the second contact pads. The bit lines are electrically isolated from the first contact pads.
REFERENCES:
patent: 6649508 (2003-11-01), Park et al.
patent: 2001-57666 (2001-07-01), None
patent: 2002-34468 (2002-05-01), None
Notice to Submit a Response, Korean Application No. 10-2002-0063025, Sep. 23, 2004.
Cho Chang-hyun
Lee Sang-hyeon
Park Yang-keun
Myers Bigel & Sibley & Sajovec
Wojciechowicz Edward
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