Patent ID: 6034470
Filing Date: 2000-03-07
Classification: H01J

Abstract:
Flat fluorescent lamp (1) for background lighting 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 on 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), characterized in thatthe discharge vessel (2) comprises 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), andthe strip-like electrodes (3-6) additionally merge into feedthroughs (12), and the latter merge into supply leads (13, 14) in such a way that the electrodes (3-6), feedthroughs (12) and external supply leads (13, 14) are constructed as structures (3, 4, 13; 5, 6, 14) resembling a conductor track,the feedthroughs being guided outwards, covered in a gas-tight fashion through the solder (10), and the external supply leads (13, 14) immediately adjacent thereto serving to connect an electric supply source.