Patent ID: 9685546
Date: 2017-06-20
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising: a first layer; a second layer provided on the first layer, the second layer configured to form a two-dimensional electron gas in the first layer; a source electrode provided on the second layer; a drain electrode provided on the second layer; a gate electrode provided between the source electrode and the drain electrode on the second layer; and a first insulating layer provided in cross-sectional view between a lateral boundary of the gate electrode and a lateral boundary of the drain electrode on the second layer, the first insulating layer including: a first film; a second film having a higher oxygen density than the first film; and a first region provided between the first film and the second film, the first region containing at least one first element selected from the group consisting of F (fluorine), H (hydrogen), and D (deuterium), the first region having a first peak of concentration of the first element.