Patent ID: 6547939
Filing Date: 2003-04-15
Classification: C23C

Abstract:
An adjustable uniformity-mask deposition system comprising:a chamber for depositing a film on a substrate; a target containing material to be deposited as the film on the substrate; a target beam for transporting material from the target to the substrate for deposition of the film on the substrate; a shadow mask located to intercept a portion of the target beam, reducing a rate of depositing the film on the substrate; a monitor measuring a transmittance of the film at different radial locations on the substrate; adjustable fingers, on the shadow mask, for intercepting different radial portions of the target beam having different radii of the substrate, each of the adjustable fingers being extendable to reduce a deposition rate at a radius of the substrate of each of the adjustable fingers and retractable to increase the deposition rate at the radius of the substrate of each of the adjustable fingers; and a plurality of motors for extending or retracting the adjustable fingers, whereby film deposition rates at different radii of the substrate are adjustable by the adjustable fingers of the shadow mask.