Patent ID: 9447498
Filing Date: 2016-09-20
CPC Classification: C23C

Claim Text:
1. A method for performing uniform processing in multiple reaction chambers sharing a first gas source and a second gas source, each reaction chamber having a gas inlet line through which a first gas from the first gas source, a second gas from the second gas source, and a purge gas are introduced into the reaction chamber, wherein a same target treatment is conducted on a first substrate in a first reaction chamber and on a second substrate in a second reaction chamber, separately, said target treatment being cyclic processing constituted by predetermined times of cycles, wherein one cycle is considered to be complete when one cycle of the target treatment is conducted on the first substrate and the second substrate one time at the respective reaction chambers wherein the one cycle starts at one of the reaction chambers and then starts at another of the reaction chambers before the one cycle ends at the one of the reaction chambers, said complete cycle comprising: (i) supplying the first gas to the multiple reaction chambers through the respective gas inlet lines in a first supply order where the first gas is supplied to the first reaction chamber and then to the second reaction chamber or in a second supply order where the first gas is supplied to the second reaction chamber and then to the first reaction chamber; and (ii) supplying the second gas to the multiple reaction chambers through the respective gas inlet lines in a supply order where the second gas is supplied to one of the multiple reaction chambers and to another of the multiple reaction chambers; wherein the purge gas is supplied to the multiple reaction chambers through the respective gas inlet lines after every supply of the first gas and after every supply of the second gas so as to purge the first gas and the second gas, respectively, from the multiple reaction chambers and the gas inlet lines, wherein steps (i) and (ii) are conducted in a same order in each cycle in each reaction chamber, wherein the complete cycle is continuously repeated until the predetermined times of cycles of the target treatment are performed in the multiple reaction chambers, wherein the supply order of the first gas is changed between the first supply order and the second supply order every time the complete cycle is repeated.