Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Patent
1997-05-27
2000-12-12
Day, Michael H.
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
313504, H05B 3304
Patent
active
061603465
ABSTRACT:
An organic electroluminescent device includes an electroluminescent element, which is enclosed in a housing. The deterioration in uniformity of the luminous surface, which occurs when an electroluminescent device is stored or operated under ambient conditions, and which deterioration manifests itself, for example, in the form of "dark spots", can be overcome to a substantial degree in accordance with the invention by using an airtight and waterproof housing which is sealed by a low-melting metal, such as a BiSn alloy.
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Peters Petrus J. M.
Van Munster Marcus G.
Vleggaar Jeroen J. M.
Yang Yang
Day Michael H.
Fox John
U.S. Philips Corporation
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