Patent ID: 7622007
Filing Date: 2009-11-24
Classification: C23C,H01L

Abstract:
1. A substrate processing apparatus, comprising: a reaction container to process a plurality of substrates; a heater to heat said plurality of substrates; and a plurality of nozzles having different lengths through which reaction gas is to be supplied into said reaction container, wherein each of said plurality of nozzles includes a horizontal portion extending in a horizontal direction and a vertical portion rising in a vertical direction, said horizontal portion is attached to a sidewall of said reaction container with said horizontal portion penetrating the sidewall of said reaction container, said vertical portion is disposed in said reaction container apart from an inner wall of said reaction container such that a portion of the vertical portion is opposed to said heater, a flow-path cross-sectional area of the portion of said vertical portion that is opposed to at least said heater is greater than a flow-path cross-sectional area of said horizontal portion, and a flow-path cross-sectional shape of the portion of said vertical portion that is opposed to at least said heater is formed into a substantially elliptic shape with a short axis thereof oriented toward a central portion of the substrate.