Patent ID: 7563481
Filing Date: 2009-07-21
Classification: H01L

Abstract:
1. A baking method for baking a polysilazane coating film disposed on a plurality of target substrates placed at intervals in a vertical direction within a process area inside a reaction container, the baking method comprising: a first heating process, a second heating process, and a third heating process sequentially applied to the polysilazane coating film in this order; the first heating process being performed while supplying water vapor into the process area and setting the process area at a first temperature of from 390° C. to 410° C.; the second heating process being performed while supplying water vapor into the process area and, setting the process area at a second temperature of from 600° C. to 800° C.; and the third heating process being performed while setting the process area at a third temperature of from 800° C. to 1000° C., wherein the first and second heat processes are directly connected to each other by a first heating-up period and the second and third heat processes are directly connected to each other by a second heating-up period such that each of the first and second heating-up period is arranged to increase temperature of the process area with time without a temperature decrease halfway therethrough, and the process area is kept vacuum-exhausted to a vacuum pressure of from 133 to 93,100 Pa over the first, second, and third heat processes.