초록 ▼

A thermal physical vapor deposition electroluminescent source includes a housing defining an enclosure having side walls and a bottom wall, the enclosure receiving solid organic electroluminescent material which can be vaporized, and the width of the housing having a dimension w.sub.h ; and the hous

A thermal physical vapor deposition electroluminescent source includes a housing defining an enclosure having side walls and a bottom wall, the enclosure receiving solid organic electroluminescent material which can be vaporized, and the width of the housing having a dimension w.sub.h ; and the housing has a conductive portion defining a vapor efflux aperture slit having a width w.sub.s for permitting vaporized electroluminescent materials to pass through the slit onto a surface of a substrate. A conductive baffle member has width b, the baffle member being centered on the slit and spaced from the side walls and spaced from the top plate by a distance m, the baffle member substantially providing a line-of-sight covering of the slit preventing direct access of vaporized electroluminescent materials to the slit, and preventing particulate electroluminescent materials from passing through the slit; and a straight-line projection from an edge of the slit to an edge of the baffle member onto a side wall defining a position on the side wall such that such position is spaced from the top plate by a dimension L. The ratio of the dimensions w.sub.h to w.sub.s is in a range of from 1.5 to 6.0; the ratio of L to w.sub.s is in a range of from 2 to 6; and the ratio of m to L is in a range of from 0.15 to 0.40. Heat is applied to different parts of the housing to cause vapor deposition.

대표청구항 ▼

[ What is claimed is:] [1.]1. A thermal physical vapor deposition source for vaporizing solid organic electroluminescent materials and applying a vaporized electroluminescent material as a layer onto a surface of a substrate in forming a display device, comprising:a) a housing defining an enclosure

[ What is claimed is:] [1.]1. A thermal physical vapor deposition source for vaporizing solid organic electroluminescent materials and applying a vaporized electroluminescent material as a layer onto a surface of a substrate in forming a display device, comprising:a) a housing defining an enclosure having side walls and a bottom wall, the enclosure receiving solid organic electroluminescent material which can be vaporized, and the width of the housing having a dimension w.sub.h ;b) the housing is further defined by a top plate having an electrically conductive portion and defining a vapor efflux aperture slit having a width w.sub.s for permitting vaporized electroluminescent materials to pass through the slit onto a surface of a substrate;c) an electrically conductive baffle member having a width b, the baffle member being centered on the slit and spaced from the side walls and spaced from the top plate by a distance m, the baffle member substantially providing a line-of-sight covering of the slit preventing direct access of vaporized electroluminescent materials to the slit, and preventing particulate electroluminescent materials from passing through the slit;d) a straight-line projection from an edge of the slit to an edge of the baffle member onto a side wall defining a position on the side wall such that such position is spaced from the top plate by a dimension L;e) the ratios of the dimensions: w.sub.h to w.sub.s being in a range of from 1.5 to 6.0; L to w.sub.s being in a range of from 2 to 6; and m to L being in a range of from 0.15 to 0.40; andf) means for applying an electrical potential to different parts of the housing to cause heat to be applied to the solid organic electroluminescent material in the enclosure causing the solid organic electroluminescent material to vaporize so that vaporized electroluminescent material is projected off of the side walls and the top plate of the housing and the top surface of the baffle member through the slit onto the substrate while particulate electroluminescent materials are prevented from passing through the slit by the baffle member.