Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1985-12-19
1987-12-01
Moore, David K.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313408, 313477HC, 313479, H01J 2907, H01J 2992
Patent
active
047106697
ABSTRACT:
A conductive connector arrangement for use in a CRT comprising a funnel having an internal Aquadag coating, a faceplate having a luminescent screen deposited upon its display surface, a ring formed of a non-conductive material having at least one recess thereon and interposed between the funnel and faceplate for supporting a mask in registration with the screen and an internal magnetic shield disposed within the funnel. The connector arrangement serves to establish the Aquadag, the screen, the mask and the shield at a common electrical potential. To this end the connector comprises a clip formed of a resilient conductive material and configured for retention in the ring recess. A first contact supported by the clip effects a conductive engagement between the screen and the clip. A second contact, also supported by the clip, effects a conductive engagement between the funnel coating and the clip. An electrical connection is effected between the clip and the mask. Finally, a mechanical and electrical connection is effected between the clip and the magnetic shield. In this manner, the screen, the Aquadag, the mask and the magnetic shield are established at a common potential by a unitary self-supporting arrangement.2CRT61R
REFERENCES:
patent: 2951179 (1960-08-01), Evans
patent: 3541373 (1970-11-01), Barr
patent: 3796903 (1974-03-01), Yamazaki et al.
patent: 4333037 (1982-06-01), Andre et al.
patent: 4344015 (1982-08-01), Marschka
patent: 4433267 (1984-02-01), Kuryla et al.
Adamski Alfred
DeFranco Thomas P.
Dougherty Lawrence W.
Moore David K.
O'Connor Cornelius J.
Wieder K.
Zenith Electronics Corporation
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