Substrate processing apparatus and substrate processing method
First Claim
1. A method for processing a substrate using a substrate processing apparatus including a reaction chamber for processing the substrate using a processing gas, a shower head which includes a gas diffusion plate having a plate shape and a plurality of through holes for passing the processing gas and which is for supplying the processing gas into the reaction chamber, and a substrate support which is provided in the reaction chamber and which is for placing the substrate so that the substrate faces the gas diffusion plate, the method comprising the process steps of:
- a) placing the substrate on the substrate support; and
b) supplying the processing gas to the reaction chamber through the plurality of through holes formed in the gas diffusion plate to perform processing to the substrate,wherein the plurality of through holes are formed in both a center region of the gas diffusion plate and a peripheral region of the gas diffusion plate that surrounds the center region, andeach of the plurality of through holes formed in the peripheral region of the gas diffusion plate has an inlet for the processing gas and an outlet for discharging and supplying the processing gas into the reaction chamber, an area of the inlet being larger than that of the outlet.
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Accused Products
Abstract
A substrate processing apparatus includes a reaction chamber with a structure allowing pressure reduction, a shower head for supplying a processing gas into the reaction chamber including a gas diffusion plate in which through holes are formed, and a substrate support for placing a substrate. Each ones of through holes provided in a peripheral region of the gas diffusion plate is formed so that an area of an inlet thereof is larger than an area of an outlet thereof. With use of the substrate processing apparatus, a processing gas can be supplied uniformly in the gas diffusion plate. Therefore, substrate processing such as film deposition and film etching can be uniformly performed.
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Citations
16 Claims
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1. A method for processing a substrate using a substrate processing apparatus including a reaction chamber for processing the substrate using a processing gas, a shower head which includes a gas diffusion plate having a plate shape and a plurality of through holes for passing the processing gas and which is for supplying the processing gas into the reaction chamber, and a substrate support which is provided in the reaction chamber and which is for placing the substrate so that the substrate faces the gas diffusion plate, the method comprising the process steps of:
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a) placing the substrate on the substrate support; and b) supplying the processing gas to the reaction chamber through the plurality of through holes formed in the gas diffusion plate to perform processing to the substrate, wherein the plurality of through holes are formed in both a center region of the gas diffusion plate and a peripheral region of the gas diffusion plate that surrounds the center region, and each of the plurality of through holes formed in the peripheral region of the gas diffusion plate has an inlet for the processing gas and an outlet for discharging and supplying the processing gas into the reaction chamber, an area of the inlet being larger than that of the outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for processing a substrate using a substrate processing apparatus including a reaction chamber for processing the substrate using a processing gas, a first shower head which includes a first gas diffusion plate having a plate shape and a plurality of first through holes for passing the processing gas and which is for supplying the processing gas into the reaction chamber, a second shower head which includes a second gas diffusion plate having a plate shape and a plurality of second through holes for passing the processing gas and which surrounds the first shower head and which is for supplying the processing gas into the reaction chamber, and a substrate support which is provided in the reaction chamber and which is for placing the substrate so that the substrate faces the second gas diffusion plate, the method comprising the process steps of:
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a) placing the substrate on the substrate support; and b) supplying the processing gas to the reaction chamber through the plurality of the first and second through holes respectively formed in the first and second gas diffusion plates to perform processing to the substrate, wherein the plurality of the through holes are formed at least in a center region of one of the first and second gas diffusion plates and a peripheral region of said one gas diffusion plate that surrounds the center region, and each of the plurality of the through holes formed in the peripheral region of said one gas diffusion plate has an inlet for the processing gas and an outlet for discharging and supplying the processing gas into the reaction chamber, an area of the inlet being larger than that of the outlet. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification