Semiconductor device and method for manufacturing same
US10297694B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 2016 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Oct 13, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/1213
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A semiconductor device includes a first thin film transistor (101) on a substrate (10), the first thin film transistor including: a sub-gate electrode (12); a first insulating layer (14) covering the sub-gate electrode; a main gate electrode (16) formed on the first insulating layer; a second insulating layer (18) covering the main gate electrode; an oxide semiconductor layer (20) having a layered structure of a first layer (20A) and a second layer (20B), the second layer having a larger band gap than the first layer; a first source electrode (22); and a first drain electrode (24), wherein as seen from a direction normal to the substrate, the oxide semiconductor layer (20) includes: a gate opposing region (20g) that overlaps the main gate electrode; a source contact region that is in contact with the first source electrode (22); a drain contact region that is in contact with the first drain electrode; and an offset region (30s, 30d) that is provided at least one of between the gate opposing region and the source contact region and between the gate opposing region and the drain contact region, wherein at least a portion of the offset region overlaps the sub-gate electrode (12) with …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.