Patent ID: 7205581

Claim:
A thyristor structure, comprising: a first terminal formed as a first region having a first conductivity type; a second region of a second conductivity type adjoining said first region; a third region of the first conductivity type adjoining said second region and having a common surface with said second region; a second terminal functioning as a fourth region, formed of the second conductivity type, and adjoining said third region; said first terminal and said second terminal each being connected to a respective one of a first potential and a second potential; auxiliary electrodes disposed on said common surface and each adjoining one of said second and third regions so that no further structure is formed between the auxiliary electrodes and a boundary of the second and third regions, said auxiliary electrodes being formed as gate electrodes, said auxiliary electrodes being electrically conductively connected with a respective one of said first terminal and said second terminal, and said auxiliary electrodes being so formed on said common surface that no parasitic effect between said first terminal and said second terminal leads to a conductive state between said two terminals; and a control terminal adapted to control the thyristor structure by an applied current embodied in one of said second region and said third region, said control terminal being formed of the same conductivity type as a surrounding region thereof.