Radiant energy – Photocells; circuits and apparatus – Signal isolator
Patent
1985-06-27
1987-12-08
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Signal isolator
357 19, G02B 2700
Patent
active
047120177
ABSTRACT:
A photocoupler device which comprises a light-emitting element and a light-receiving element which comprises a 4-layer structure of the PNPN conductivity type, and wherein that portion of said light-receiving element where a light entered does not contribute to its operation is covered with a light-reflecting membrane.
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IEEE Journal of Solid-State Circuits, vol. SC-14, No. 6, Dec. 1979, pp. 995-1003, New York, U.S.; H. Mori et al.: "An Optically-Coupled High-Voltage p-n-p-n Crosspoint Array".
Abstract for Japanese Pat. No. 57-79678(A) issued 5/18/82.
Japanese Journal of Applied Physics, vol. 18, Supplement 18-1, 1979, pp. 405-410, Tokyo, JP; Y. Sugawara et al.: "Integrated Photo-Coupled Semiconductor Crosspoint Switches".
Electron Device Letters, vol. EDL-1, No. 2, Feb. 1980, pp. 15-17, New York, U.S.; R. J. Roedel et al.: "A Gal-xAlxAs Monolithic Opto-Isolator".
Kabushiki Kaisha Toshiba
Nelms David C.
Oen William L.
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