Patent ID: 7413942

Claim:
A method for forming a T-gate on a substrate comprising the steps of: a) providing a substrate; b) disposing a layer of a UV-sensitive first photoresist the substrate; c) patterning the first photoresist by exposing the first photoresist to UV radiation through a mask and developing the exposed first photoresist to define a first opening for a base of the T-gate; d) rendering the pattern insensitive to the UV-radiation; e) disposing a layer of a UV-sensitive second photoresist, the second photoresist being negative-acting; f) patterning the second photoresist by exposing the second photoresist to the UV radiation through a mask to create an undercut profile and developing the exposed second photoresist to define a second opening for a cap of the T-gate over the first opening; and g) depositing a conductive material within the first and second openings to form a T-gate.