Method of manufacturing semiconductor device

Active solid-state devices (e.g. – transistors – solid-state diode – Integrated circuit structure with electrically isolated... – Including dielectric isolation means

Reexamination Certificate

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C257S315000

Reexamination Certificate

active

07838961

ABSTRACT:
A semiconductor device includes a semiconductor substrate having trenches extending thereinto. A trench type insulating film fills the trenches. The trench type insulating film includes a first and second insulating film and is laminated in a portion of the trenches.

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