Field controlled thyristor with buried grid

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357 20, 357 38, 357 45, H01L 2980

Patent

active

040608212

ABSTRACT:
A novel grid structure for a field controlled thyristor includes a current controlling grid structure interdigitated with a cathode structure in which the surface area of the cathode structure is substantially greater than that of the grid structure. High forward blocking voltage gain (anode voltage/grid voltage) and low on-state losses in a turn-off type field controlled thyristor are accomplished by providing a surface grid portion and a buried portion which are connected to the surface grid structure and substantially underlies the cathode structure. The buried grid structure is constructed in a manner to provide a high aspect ratio for the channel region.

REFERENCES:
patent: 3363153 (1968-01-01), Zloczower
patent: 3398337 (1968-08-01), So
patent: 3439192 (1969-04-01), Teszner
patent: 3465216 (1969-09-01), Teszner
patent: 3497777 (1970-02-01), Teszner
patent: 3841917 (1974-10-01), Shannon
A. Erikson, "New Tecnetrons Switch 15 Amp", Electronics, Sept. 6, 1963, pp. 75, 76.
"Field Controlled Thyristor is Faster," Electronic Engineering, Jan. 1976, p. 5.

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