Patent ID: 7601223

Claim:
An apparatus for depositing a thin film on a substrate, comprising: a reaction chamber having a reaction space; a substrate holder for holding the substrate within the reaction space; a gas outlet in fluid communication with the reaction space; a gas exchange plate having a first side and a second side, positioned within the reaction chamber, the plate comprising: a plurality of first passages machined therein being in fluid communication with a first reactant gas source and a purge gas source, the first passages communicating with a plurality of first apertures spaced along the first passages, the first apertures opening to the reaction space; a plurality of second passages machined therein being in fluid communication with a second reactant gas source and a purge gas source, the second passages communicating with a plurality of second apertures spaced along the second passages, the second apertures opening to the reaction space; and a plurality of third apertures extending from the first side to the second side of the gas exchange plate, allowing gas to pass therethrough.