Patent ID: 7914621

Claim:
A vapor deposition source, comprising: a housing; a crucible mounted in the housing for vaporizing deposition materials; at least one heater installed adjacent to the crucible in the housing for heating the crucible, said at least one heater comprises a plate heater; and an injection nozzle disposed to inject the vaporized deposition materials through the injection nozzle into a substrate disposed at an exterior of the housing; a first heat blocking plate disposed at a front end of the injection nozzle and blocking heat radiated through the injection nozzle, said first heat blocking plate being generally cylindrical in shape and having side portions continuously extending peripherally from a front side of said injection nozzle and mating against an exterior peripheral surface of the housing, and extending at respective angles greater than 0° and less than 90° relative to a central longitudinal axis of said injection nozzle; and at least two spaced-apart second heat blocking plates continuously protruding from and beyond the exterior peripheral surface of the housing on radially opposite sides of the first heat blocking plate, said at least two second heat blocking plates extending in a direction parallel to the central longitudinal axis of said injection nozzle, said at least two second heat blocking plates protruding farther from both sides of the first heat blocking plate.