Coating processes – Electrical product produced – Fluorescent or phosphorescent base coating
Patent
1997-04-28
1999-11-16
Talbot, Brian K.
Coating processes
Electrical product produced
Fluorescent or phosphorescent base coating
427 69, 42725515, 42725528, B05D 506, C23C 1600
Patent
active
059853581
ABSTRACT:
A method and apparatus for manufacturing EL devices in a short period of time wherein during formation of a light emitting layer composed of II, III or VI-group of elements doped with a light emitting element through a chemical vapor deposition method, water content of a transport gas that transports gasified organic metals is removed through a dehydration filter and thus, source material decomposition due to the water content is prevented and a steady supply of source materials becomes possible. By removing the water content of the transport gas, source materials can be supplied constantly even if heating temperatures exceed a temperature conventionally regarded as the temperature at which decomposition starts and thus, a light emitting layer having a practical thickness can be formed in a short period of time. Because of the high-speed film formation, the rate of the film being contaminated with impurities lessens and the light emitting layer has a luminance three times that of conventional layers.
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Hattori Tadashi
Ito Nobuei
Katayama Masayuki
Mizutani Atsushi
Nippondenso Co. Ltd.
Talbot Brian K.
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