Semiconductor memory device and method of fabricating the same

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

Reexamination Certificate

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C257S295000, C257S311000, C438S257000, C438S260000

Reexamination Certificate

active

07453116

ABSTRACT:
A silicon nitride film for storing electric charge is formed on a semiconductor substrate while placing a tunnel oxide film in between, and the silicon nitride film is then subjected to hydrogen plasma treatment so as to effectively erase unnecessary charge stored therein during various process steps in fabrication of the semiconductor memory device, to thereby stabilize the threshold voltage (Vth) of the semiconductor memory device.

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patent: WO 94/10686 (1994-05-01), None
Office Action dated Jun. 17, 2008 issued in corresponding Japanese Application No. 2002-355933.

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