Optically triggered lateral thyristor with auxiliary region

Details Optically triggered lateral thyristor with auxiliary region Optically triggered lateral thyristor with auxiliary region

1986-09-12

1988-10-18

James, Andrew J.

357 30, 357 35, 357 36, 357 51, 357 52, 357 59, H01L 2974

Patent

active

047791268

ABSTRACT:
An optically triggered lateral thyristor consists of a plurality of individual lateral thyristor elements connected in parallel. Each element has an active base region which contains a respective cathode region. Each of the base regions is carried in a common conductivity type body. Extending fingers of a continuous anode electrode partly enclose each individual base region to enable the parallel connection of the individual devices. The thyristor base and emitter zones are surrounded by an auxiliary P region which is resistively connected to a field plate and the cathode electrode to improve emitter collection efficiency. The cathode electrode and anode electrode are interdigitated. The cathode electrode is connected to spaced, parallel, generally rectangular emitter regions which are disposed in respective bases between loops of the cathode electrode. Radiation applied to the surface of the device by a noncritical photo source produces the effect of a gate current in order to turn on the device. A resistor, zener diode, capacitor and a plurality of parallel connected MOSFETs are integrated into the chip to define a control circuit for controlling the turn-on of the main lateral thyristor. The anode region may be relatively heavily doped to reduce forward drop. The emitter region surface may be relatively lightly doped to improve injection efficiency of the emitter.

REFERENCES:
patent: 3486088 (1969-12-01), Gray et al.
patent: 3508127 (1970-04-01), Bergman et al.
patent: 3832732 (1974-08-01), Roberts
patent: 3878551 (1975-04-01), Callahan, Jr.
patent: 3990091 (1976-11-01), Cresswell et al.
patent: 4003072 (1977-01-01), Matsushita et al.
patent: 4146906 (1979-03-01), Miyata et al.
patent: 4224634 (1980-09-01), Svedberg
patent: 4292550 (1981-09-01), Onda et al.
patent: 4315274 (1982-02-01), Fukui et al.
patent: 4354121 (1982-10-01), Terasawa et al.
patent: 4414560 (1983-11-01), Libow
patent: 4437107 (1984-03-01), Jonsson et al.
patent: 4467519 (1984-08-01), Glang et al.
patent: 4502070 (1985-02-01), Leipold et al.
patent: 4502071 (1985-02-01), Herberg
patent: 4613884 (1986-09-01), Angerstein et al.

Affiliated with

Also associated with

Rating

Optically triggered lateral thyristor with auxiliary region does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optically triggered lateral thyristor with auxiliary region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optically triggered lateral thyristor with auxiliary region will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1197908