Patent ID: 6653245
Filing Date: 2003-11-25
Classification: H01L,Y10T

Abstract:
A method for liquid phase deposition, comprising the steps of:(a) providing an apparatus for liquid phase deposition, the apparatus has a saturation reaction system and a steady-flow over-saturation loop reaction system, the saturation reaction system including a mixture trough, at least two supply devices for raw materials, and valve control devices, the steady-flow over-saturation loop reaction system including an over-saturation reaction trough, at least one liquid level control trough, at least two said supply devices for raw materials, and said valve control devices connected to said saturation reaction system; (b) providing at least two raw materials from at least two said supply devices of said saturation reaction system into said mixture trough; (c) after stirring by said stirrer device until saturation, filtering out unnecessary solid-state particles by using said filter device; (d) providing saturated and filtered liquid by using said pumps through said valve control devices into said over-saturation reaction trough of said steady-flow over-saturation loop reaction system; (e) stopping providing said saturated and filtered liquid when said over-saturation reaction trough is filled up with said saturated and filtered liquid and said saturated and filtered liquid over-flows into said at least one liquid level control trough to a pre-determined level; (f) switching said valve control devices into a state in which said steady-flow over-saturation loop reaction system runs independently; (g) providing a substrate into said over-saturation reaction trough; (h) providing reactants from said at least two supply devices into said over-saturation reaction trough; (i) depositing a thin film into said substrate when said saturated liquid becomes over-saturated; and (j) changing the operation mode of said valve control devices to an exhaust mode when the concentration of said solution in said over-saturation reaction trough has reached the limitation of said over-saturation reaction trough.