Cathode ray tube with improved electrical connection means
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United States of America Patent
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-
Oct 1, 1996
Grant Date -
N/A
app pub date -
Apr 29, 1992
filing date -
Jul 13, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cathode ray tube relates to the improvement of its contact spring for grounding thermoelectrons remaining on a phosphor layer to an external anode, and the coupling structure of the contact spring. One end of the contact spring whose other end has a circular contact portion in contact with a graphite conductive layer of a funnel extends a predetermined length to form a contact portion in contact with an aluminum deposited layer of a panel. A contact spring coupling unit is formed at the center of the body of the contact spring and one side of the frame of a shadow mask frame assembly. The graphite layer formation process for electrically connecting the aluminum deposited layer and a stud pin can be eliminated, and the inferiority caused by choking of the electron beam passing holes of the shadow mask produced during welding the contact spring can be prevented which enhances productivity and quality of the end product.
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