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Primary Examiner: Lynch, Michael J.
Assistant Examiner: Wojciechowicz, E.
Attorney: Stevens, Davis, Miller & Mosher

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Title: Switching device equipped with a semiconductor memory element

Abstract: A switching device equipped with a semiconductor memory element in which the semiconductor memory element includes at least one junction region provided on a semiconductor base plate, a thin insulating film through which carriers can pass and an insulating film having a trap level, said two insulating films being disposed on the surface of said semiconductor base plate in stacked layer relationship, thereby providing a memory function. The present device is provided with this semiconductor memory element, a power supply for controlling the semiconductor memory element and means for turning on or off the controlling power supply, thus accomplishing a touch-switching device of high impedance and ensuring its operations with inexpensive cost.


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Inventors: Uchida, Kosaku (Neyagawa, JA)
Kobayashi, Tsutomu (Kadoma, JA)
Koike, Susumu (Fujiidera, JA)

Application Number: 455883
Filing Date: 1974-03-28
Publication_date: 1976-01-06
Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JA)
Primary Class(es): 327/517 257/252, 257/324, 257/E29.309, 327/427, 365/177, 365/184
Other Classes:
US Patent Ref:
3676717Jul, 1972Lockwood307/304.
3693003Sep, 1972Sigsbee et al.357/23.

Other Refs: Other References: Compon Tech. (GB) - Vol. 4, No. 5, Oct. 1970, pp. 17-21 - Oakley.