Field controlled thyristor with buried grid
US4060821A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1976 |
| Grant date | Nov 29, 1977 |
| Priority date | — |
| Expiry date | Jun 21, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D12/212
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.