Patent ID: 7700393

Claim:
A method of manufacturing an enhancement type semiconductor probe comprising: forming, on a silicon substrate, a first etching mask pattern for forming a tip portion of a probe in a first direction and forming side-walls on both sides of the first etching mask pattern; anisotropically etching the silicon substrate using the side-walls to form inclined faces of the probe; implanting impurities into the silicon substrate using the side-walls as a mask to form source and drain regions and removing the side-walls; forming source and drain regions on the inclined faces of the probe using the first etching mask pattern as a mask and removing the first etching mask pattern; forming, on the tip portion of the probe, a third etching mask pattern for forming a tip portion of the probe in a second direction; forming spacer layers on both sides of the second etching mask pattern; and etching the silicon substrate in a certain depth by a photolithography using the spacer layers and removing the spacer layers.