Patent ID: 6531417
Filing Date: 2003-03-11
Classification: F04B

Abstract:
A micro pump comprising:cavities formed by oxidizing and etching trench walls formed in a silicon substrate in order to form a pumping region including a main pumping region and an auxiliary pumping region; first channels formed on both sides of the pumping region; a flow prevention region having backward-flow preventing plates to resist a fluid flow such that the flow of the fluid is directed to a predetermined direction, wherein the backward-flow preventing plates are disposed in the main pumping region and the first channel adjacent to the main pumping region and wherein the backward-flow preventing plates are formed by the silicon substrate in which the cavities formed by oxidizing and etching trench walls are formed; inlet/outlet regions formed at each of the first channels which are disposed on both ends of the pumping region; an outer layer covering the trenches of the silicon substrate and opening portions of the inlet/outlet regions; and a thermal conducting layer formed on the outer layer and over the main pumping region so that a pressure of the fluid in the main pumping region can be increased by the thermal conducting layer.