Patent ID: 8926755
Filing Date: 2015-01-06
Classification: C23C

Abstract:
1. An apparatus for depositing a material on a substrate by evaporation that produces substrates capable of undergoing a lift-off process post substrate completion, the apparatus comprising: a conical-shaped housing with a domed top, a bottom with a bottom opening, a sloping lateral wall that converges linearly from the domed top towards the bottom, and an interior, the interior having a processing pressure of 10 an evaporation source containing an evaporant material positioned adjacent the bottom and aligned with a first axis that extends through a center of the domed top, the evaporation source being positioned substantially at a centerpoint of a sphere which centerpoint is located on the first axis; a central dome-shaped member positioned above the evaporation source and adjacent the domed top, the central dome-shaped member having a center on the first axis and located a predefined distance from the evaporation source on the first axis wherein the predefined distance is substantially equal to a radius of the sphere wherein the central dome-shaped member rotates about the center and the first axis; one or more orbital dome-shaped members positioned above the evaporation source and adjacent the domed top but offset from the first axis, the one or more orbital dome-shaped members located a predefined distance from the evaporation source that is substantially equal to the radius of the sphere wherein the one or more orbital dome-shaped members rotate about the first axis and wherein each orbital dome-shaped member simultaneously rotates about a second axis that extends through a center of the orbital dome-shaped member to the evaporation source, the one or more orbital dome-shaped members being substantially equal in diameter and concavity to the central dome-shaped member, the evaporation source being positioned at the centerpoint; a stationary uniformity mask located in a fixed position between the evaporation source and the central dome-shaped member, the uniformity mask being a single uniformity mask and having a width that tapers from a predefined width to a narrower width with increasing radius from the first axis of the central dome-shaped member and operationally affecting only the central dome-shaped member, wherein the stationary uniformity mask is shaped to define a resultant central dome deposition distribution of the evaporant material that is substantially uniform; and one or more wafer receiving positions located within each of the one or more orbital dome-shaped members and the central dome-shaped member for receiving a wafer therein, each of the plurality of wafer positions configured to orient a substrate surface of a wafer mounted therein substantially orthogonal to a linear trajectory from the evaporation source to the substrate surface during rotation about the first axis and the second axis, wherein each of the orthogonal wafer positions holds a substrate in a processing vacuum of 10