Manufacturing of a semiconductor device and corresponding semiconductor device
US8841186B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2010 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Mar 4, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D64/513
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
The disclosed method of manufacturing (110, 120, 130, 140) a semiconductor device (12) has the steps (112, 114, 116) of: forming at least one wall (33) of a body (44) of the semiconductor device (12) by etching at least one trench (22) for a gate (42) of the semiconductor device (12) into the body (44); and performing a slanted implantation doping (126, 128) into the at least one wall (33) of the body (44), after the etching (112) of the at least one trench (22) and prior to coating the at least one trench (22) with an insulating layer (29). A semiconductor device (12) comprises at least one trench (22) for a gate (42) of the semiconductor device (12); and a body (44) having at least one wall (33) of the at least one trench (22), wherein a deviation (64) of a doping concentration (62) along a distance (66) in depth-direction (do) of the at least one trench (22) in a surface (33) of the at least one wall (33) is less than ten percent of a maximum value (68) of the doping concentration (62) along the distance (66).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.