Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1992-05-15
1994-08-30
Yusko, Donald J.
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
313493, 313618, 313631, 313331, 313292, 313581, 313586, 345 43, 345 45, 3151694, H01J 6302
Patent
active
053431154
ABSTRACT:
A large area multi-channel flat fluorescent lamp with improved efficiency consists of two groups of closed hollow electrodes which are printed on the inner surfaces of the opposing ends of two flat glass substrates. The substrates are sealed together and have wave-guiding spacers which protect the lamp from implosion and also maintain a fixed spacing between the two substrates. A dielectric reflective layer is coated on the inner side of one of the substrates with an over-coat of phosphor, and the inner opposing surface of the other substrate is coated with only the phosphor. The space between the substrates is first evacuated and then filled with an inert gas and mercury vapor. The multi-channel closed hollow electrode structure with wave-guiding spacers, in combination with a reflective dielectric layer produces greater brightness with better brightness uniformity over a large area. In addition, the large area multi-channel flat fluorescent lamp maintains high efficiency and has a long life.
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patent: 3894264 (1975-07-01), Andoh et al.
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patent: 3952221 (1976-04-01), Kamegaya et al.
patent: 4978888 (1990-12-01), Anandan et al.
Hathaway, Hawthorne, Fleischer, "New Backlighting Technologies for LCDs", Society for Information Display, International Symposium, Digest of Technical Papers, vol. XXII, pp. 751-754, May 6, 1991.
Hinotani, Kishimoto, Terada, "Flat Fluorescent Lamp for LCD Backlight," International Display Research Conference, pp. 52-55, 1988.
Anandan Munisamy
Ketchum Douglas
Patel Ashok
Thomas Electronics Incorporated
Yusko Donald J.
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