US Patent 10084074 Compound semiconductor field effect transistor gate length scaling

A compound semiconductor transistor may include a channel layer. The compound semiconductor transistor may also include a dielectric layer on the channel layer. The compound semiconductor transistor may further include a gate. The gate may include a vertical base portion through the dielectric layer and electrically contacting the channel layer. The gate may also include a head portion on the dielectric layer and electrically coupled to the vertical base portion of the gate.