Patent ID: 6976896
Filing Date: 2005-12-20
Classification: H01J

Abstract:
1. A process for producing a discharge vessel of a flat gas discharge lamp, comprising: (a) forming an assembly of a base plate, at least one spacer, a frame and a cover plate, the frame comprising first and second layers each having two straight individual frame parts that are arranged parallel to and at a distance from one another, the individual frame parts of the first layer being arranged on the base plate and at right angles to the individual frame parts of the second layer, ends of individual frame parts of the second layer being placed on ends of the individual frame parts of the first layer so that two filling openings are formed in each layer, the cover plate being arranged on the frame, (b) filling the assembly with a gas, (c) heating the assembly at a joining temperature to soften the individual frame parts, close the filling openings and join the frame parts to each other and to the base and cover plates, the at least one spacer remaining sufficiently hard during the heating to define a distance between the cover plate and the back plate.