Patent ID: 6837939
Filing Date: 2005-01-04
Classification: C23C,H01L

Abstract:
1. A thermal physical vapor deposition source for vaporizing pellets containing organic materials onto a surface of a substrate in forming a display, comprising: (a) a housing defining a plurality of spaced passages each for receiving compacted pellets of organic materials; (b) a cover plate over the housing, with a first plurality of openings corresponding to the spaced passages of the housing; (c) an electrical heater structure disposed over the cover plate; (d) an aperture plate, disposed over the electrical heater structure and having at least one aperture; (e) an electrically insulating spacer member located between the electrical heater structure and engaging the aperture plate, such electrically insulating spacer member having at least one opening, corresponding to the first plurality of openings of the cover plate and the spaced passages of the housing; and (f) means for applying current to the electrical heater structure to produce heat sufficient to vaporize the pellets and permit vapor efflux of materials to pass through the first plurality of openings of the cover plate, the heater structure, the electrically insulating spacer member and the apertures of the aperture plate, onto the substrate.