Hearing aid

Details Hearing aid Hearing aid

2007-08-28

2007-08-28

Dinh, Son (Department: 2824)

Static information storage and retrieval

Floating gate

Particular connection

C257S316000, C257S322000

Reexamination Certificate

active

10844525

ABSTRACT:
A hearing aid comprising a data memory includes a plurality of semiconductor memory cells. The semiconductor memory cell has a gate insulating film formed on a semiconductor substrate, on a well region provided in the semiconductor substrate, or on a semiconductor film deposited on an insulator; a single gate electrode formed on the gate insulating film; two memory functional units formed on both sidewalls of the single gate electrode; a channel formation region formed under the single gate electrode; and first diffusion regions disposed on both sides of the channel formation region. The semiconductor memory cell is constituted so as to change an amount of currents flowing from one of the first diffusion regions to the other first diffusion region according to an amount of charges retained in the memory functional unit or a polarization vector when a voltage is applied to the gate electrode.

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patent: 6493270 (2002-12-01), Chevallier
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patent: 2001-148899 (2001-05-01), None
patent: 2002-237540 (2002-08-01), None

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