Patent ID: 6828162
Filing Date: 2004-12-07
Classification: G01N,H01L

Abstract:
A system for monitoring and controlling boron phosphorous doped silicon oxide (BPSG) deposition and reflow, comprising:at least one reflow controlling component operative to control the temperature of at least one portion of a wafer; a reflow controlling component driving system for driving the at least one reflow controlling component; a system for directing light to the at least one portion of the wafer; a measuring system for measuring BPSG deposition parameters based on light reflected from the at least one portion of the wafer; and a processor operatively coupled to the measuring system and the reflow controlling component driving system, the processor receiving BPSG deposition data from the measuring system and the processor using the data to at least partially base control of the at least one reflow controlling component so as to regulate the temperature of the at least one portion of the wafer.