Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2007-02-13
2007-02-13
Kebede, Brook (Department: 2823)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C257S315000, C257SE29129, C257SE21680
Reexamination Certificate
active
10963029
ABSTRACT:
A new structure is disclosed for semiconductor devices with which contact regions are self-aligned to conductive lines. Openings to a gate oxide layer, in partially fabricated devices on a silicon substrate, having insulating sidewalls. First polysilicon lines disposed against the insulating sidewalls extend from below the top of the openings to the gate oxide layer. Oxide layers are grown over the top and exposed sides of the first polysilicon lines serving to insulate the first polysilicon lines. Polysilicon contact regions are disposed directly over and connect to silicon substrate regions through openings in the gate oxide layer and fill the available volume of the openings. Second polysilicon lines connect to the contact regions and are disposed over the oxide layers grown on the first polysilicon lines.
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Kebede Brook
Thomas Kayden Horstemeyer & Risley
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