EP 0912991 B1 20040303 - FLAT FLUORESCENT LIGHT FOR BACKGROUND LIGHTING AND LIQUID CRYSTAL DISPLAY DEVICE FITTED WITH SAID FLAT FLUORESCENT LIGHT
Title (en)
FLAT FLUORESCENT LIGHT FOR BACKGROUND LIGHTING AND LIQUID CRYSTAL DISPLAY DEVICE FITTED WITH SAID FLAT FLUORESCENT LIGHT
Title (de)
FLACHLEUCHTSTOFFLAMPE FÜR DIE HINTERGRUNDBELEUCHTUNG UND FLÜSSIGKRISTALLANZEIGE-VORRICHTUNG MIT DIESER FLACHLEUCHTSTOFFLAMPE
Title (fr)
TUBE FLUORESCENT PLAT DESTINE A L'ECLAIRAGE DE FOND ET DISPOSITIF D'AFFICHAGE A CRISTAUX LIQUIDES DOTE DE CE TUBE FLUORESCENT PLAT
Publication
Application
Priority
- DE 9800827 W 19980320
- DE 19711890 A 19970321
- DE 19729181 A 19970708
Abstract (en)
[origin: US6034470A] PCT No. PCT/DE98/00827 Sec. 371 Date Nov. 17, 1998 Sec. 102(e) Date Nov. 17, 1998 PCT Filed Mar. 20, 1998 PCT Pub. No. WO98/43277 PCT Pub. Date Oct. 1, 1998A flat fluorescent lamp (1) has a discharge vessel (2) having a base plate (7), a top plate (8) and a frame (9) which are connected to one another in a gas-tight fashion by means of solder (10). Structures resembling conductor tracks function in the interior of the discharge vessel as electrodes (3-6), in the feedthrough region as feedthroughs, and in the external region as external supply leads (13; 14). Flat lamps of the most different sizes can thereby be produced simply in engineering terms and in a fashion capable of effective automation. Moreover, virtually any electrode shapes can be realized, in particular optimized with regard to a uniform luminous density with a reduced drop in luminous density towards the edges of the flat lamp. At least the anodes (5, 6) are covered in each case with a dielectric layer (15). The lamp (1) is preferably operated by means of a pulsed voltage source and serves as background lighting for LCDs, for example in monitors or driver information displays.
IPC 1-7
IPC 8 full level
F21V 7/00 (2006.01); G02F 1/13357 (2006.01); G02F 1/1335 (2006.01); H01J 61/00 (2006.01); H01J 61/067 (2006.01); H01J 61/30 (2006.01); H01J 61/92 (2006.01); H01J 65/00 (2006.01); H01J 65/04 (2006.01)
CPC (source: EP KR US)
H01J 61/00 (2013.01 - KR); H01J 61/305 (2013.01 - EP US); H01J 61/92 (2013.01 - EP US); H01J 65/046 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE DK ES FI FR GB IT NL SE
DOCDB simple family (publication)
US 6034470 A 20000307; AT E261188 T1 20040315; CA 2256346 A1 19981001; CA 2256346 C 20060516; CN 1220771 A 19990623; CN 1267967 C 20060802; DE 59810890 D1 20040408; EP 0912991 A2 19990506; EP 0912991 B1 20040303; HU 224147 B1 20050530; HU P0000863 A2 20000828; HU P0000863 A3 20030128; JP 2000503801 A 20000328; JP 3264938 B2 20020311; KR 100375615 B1 20030418; KR 20000015788 A 20000315; TW 412770 B 20001121; US 6853124 B1 20050208; WO 9843277 A2 19981001; WO 9843277 A3 19990107
DOCDB simple family (application)
US 18086198 A 19981117; AT 98925418 T 19980320; CA 2256346 A 19980320; CN 98800323 A 19980320; DE 59810890 T 19980320; DE 9800827 W 19980320; EP 98925418 A 19980320; HU P0000863 A 19980320; JP 54468598 A 19980320; KR 19980709336 A 19981119; TW 87104177 A 19980320; US 48376100 A 20000114