Color cathode ray tube

Details Color cathode ray tube Color cathode ray tube

1997-05-20

1999-06-22

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313404, 313405, H01J 2980

Patent

active

059145579

ABSTRACT:
A shadow mask opposed to a phosphor screen of a panel has a rectangular mask body and a rectangular mask frame fixed to the periphery of the mask body. The mask body has a pair of long side edges and a pair of short side edges, and the long side edges are respectively welded to long side walls of the mask frame while the short side edges are respectively welded to short side walls of the mask frame. The long and short side walls of the mask frame are respectively supported on the panel by mask holders. Each mask holder has a fixed portion welded to the mask frame and an engaging portion engaged with a stud pin of the panel. Welding positions between the long side edges of the mask body and the long side walls of the mask frame are shifted from the short axis, and welding positions between the short side edges of the mask body and the short side walls of the mask frame are shifted from the long axis.

REFERENCES:
patent: 5576595 (1996-11-01), Inoue

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