Patent ID: 7309644
Filing Date: 2007-12-18
Classification: C23C

Abstract:
1. A fabrication method of a monolithic chip, the method comprising: depositing a single continuous composition spread thin-film with layers on a substrate by defining a desired thickness profile of the thin-film, defining a desired gradient profile of each layer, each gradient profile comprising a desired thinnest profile and a desired thickest profile, wherein each layer is formed of a discrete material and is deposited onto the substrate using a corresponding source, calibrating a rate of emission of each source based on an amount of the discrete material of the layer to be deposited during a specified period of time to form the desired gradient profile of each layer, aligning an aperture of a shutter over a desired area of the substrate to form the thin-film, calculating a shutter speed for the specified gradient profile of each layer across the desired area of the substrate, wherein the speed of the shutter is a function of the defined gradient profile, from thinnest to thickest, of the layer and the source rate of emission, and depositing each layer on the substrate, through the aperture, at the rate of emission as the aperture of the shutter moves at the calculated shutter speed from the desired thinnest profile of each layer to the desired thickest profile of each layer.