Patent ID: 6853124

Claim:
A liquid crystal display device ( 33 ) having a liquid crystal display ( 35 ), an electronic drive system ( 42 ) for driving the liquid crystal display ( 35 ), a lighting system as background lighting for the liquid crystal display ( 35 ), a receptacle ( 39 ) in which the liquid crystal display ( 35 ) is arranged with the electronic drive system ( 42 ) and dew lighting system; the lighting system having a flat fluorescent lamp ( 1 ) and having an electric voltage source ( 23 ) which is connected to the flat fluorescent lamp ( 1 ) in an electrically conducting fashion and is suitable for injecting into the flat fluorescent lamp ( 1 ) effective power pulses separated from one another by pauses during operation; the flat fluorescent lamp having an at least partially transparent discharge vessel ( 2 ) which is closed, flat and filled with a gas filling and consists of electrically non-conducting material, which discharge vessel ( 2 ) has an its inner wall at least in part a layer of a fluorescent material or a mixture of fluorescent materials, and having strip-like electrodes ( 3 - 6 ) arranged on the inner wall of the discharge vessel ( 2 ), at least the anodes ( 5 , 6 ) being covered in each case with a dielectric layer ( 15 ); the discharge vessel comprising a base plate ( 7 ), a top plate ( 8 ) and a frame ( 9 ), the base plate ( 7 ), the top plate ( 8 ) and the frame ( 9 ) being interconnected in a gas-tight fashion by means of solder ( 10 ); and the strip-like electrodes ( 3 - 6 ) merging into feedthroughs ( 12 ) which merge into external supply leads ( 13 , 14 ) in such a way that the electrodes ( 3 - 6 ), feedthroughs ( 12 ) and external supply leads ( 13 , 14 ) are constructed a structures ( 3 , 4 , 13 ; 5 , 6 , 14 ) resembling a conductor track, the feedthroughs being guided outwards and covered in a gas-tight fashion, and the external supply leads ( 13 , 14 ) immediately adjacent thereto serving to connect to an electric supply source.