Semiconductor device

Details Semiconductor device Semiconductor device

2007-06-26

2009-11-10

Weiss, Howard (Department: 2814)

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

C257S315000, C257S316000, C257S758000, C257SE23011

Reexamination Certificate

active

07615819

ABSTRACT:
A semiconductor device includes a semiconductor substrate, an insulating film formed above an upper surface of the substrate and including a contact hole penetrating the insulating film, a wiring portion formed on the insulating film, and a contact plug formed in the contact hole and including a first conductive plug formed in a lower portion of the contact hole so that the exposed upper surface of the semiconductor substrate is in contact with the first conductive plug and a second conductive plug formed on the first conductive plug, so that the wiring portion is in contact with the second conductive plug. The first and second conductive plugs have an interface with a height that is lower than a height of the boundary portion relative to an upper surface of the semiconductor substrate.

REFERENCES:
patent: 5144579 (1992-09-01), Okabe et al.
patent: 7326993 (2008-02-01), Kajimoto et al.
patent: 2005/0051831 (2005-03-01), Kajimoto et al.
patent: 2000-150637 (2000-05-01), None

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