Patent ID: 6342103
Filing Date: 2002-01-29
Classification: C23C

Abstract:
A crucible cover for a multiple pocket vapor source wherein the vapor produced by an electron bean can be directed to uncovered crucible pockets, comprising;(a) a crucible having a crucible surface, the surface having a plurality of pockets for holding coating materials to be evaporative heated; and (b) a crucible cover with a covering surface facing the crucible, where the pockets are covered or uncovered, and where there is at least one uncovered pocket and at least one covered pocket, such that the crucible surface and cover surface have cooperating surface features forming an interlocking, non-contacting, line-of-sight blocking baffle between the uncovered pockets and the covered pockets, whereby line-of-sight material contamination from heated vapors is reduced and that deposition on the cover and crucible does not result in cross-contamination between pockets (c) an actuator that lifts the crucible cover.