Fluorescent display panel comprising a grid lead having an inden

Details Fluorescent display panel comprising a grid lead having an inden Fluorescent display panel comprising a grid lead having an inden

1978-11-09

1980-09-02

Segal, Robert

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313269, H01J 6302

Patent

active

042208947

ABSTRACT:
In a fluorescent display panel comprising a grid member comprising, in turn, a pair of grid leads extended integrally from a grid frame to which a grid is attached, each grid lead is fixed to a substrate of the panel. When driven in a time division fashion, the panel produces audible noises disagreeable to the ear. In order to reduce the noises, at least one of the grid lead pair is deformed perpendicularly of the grid at its portion between the grid frame and the portion at which the grid lead is fixed to the substrate. The deformation may be an indent directed either away or towards the substrate, with the thickness of the grid lead rendered at the position of the indent. The deformation may alternatively be a bend, with the thickness kept uniform. Also in the latter case, an indent is formed in the grid lead.

REFERENCES:
patent: 4023876 (1977-05-01), Fukunaga et al.
patent: 4132920 (1979-01-01), Kobayakawa et al.

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