Patent ID: 6589804
Filing Date: 2003-07-08
Classification: G01B

Abstract:
A system for regulating oxide/nitride (ON) dielectric formation in non volatile memory devices, comprising:at least one oxide/nitride former operative to form one or more oxide and/or nitride layers on a portion of a wafer; an oxide/nitride former driving system for driving the at least one oxide/nitride former; a system for directing light to the portion of the wafer; a measuring system for measuring parameters of ON formation thickness and uniformity based on light reflected from one or more ON formations; and a processor operatively coupled to the measuring system and the oxide/nitride former driving system, the processor receiving ON formation thickness and uniformity data from the measuring system and the processor using the data to at least partially base control of the at least one oxide/nitride former so as to continuously regulate ON thickness and uniformity on the portion of the wafer during formation of each layer thereon.