Optically controlled thyristor
US6218682A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1998 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Sep 18, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F30/263
Abstract
In an optically controlled thyristor having a four layer thyristor structure with respective first, second, third and fourth layers, the first and third layers have a first doping type, and the second and fourth layers have a second doping type different from the first doping type. A first shorting structure, formed from a semiconductor material of opposite doping from the first layer, is electrically coupled to the second layer by an electrically conducting, optically opaque layer. A first conductive layer connects between the first layer and the shorting structure and is adapted to transmit light into the first shorting structure. The first semiconductor layer of an optically controlled thyristor may have an aperture therethrough to permit light to enter the second layer from a first conductive layer side without propagating within the first layer. The semiconductor switch may be incorporated into a switching system having a light source controlled by a controller, and having a optical transmission channel coupled between the thyristor switch and the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.