Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1988-04-15
1990-04-10
Yusko, Donald J.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313406, 313407, 313404, H01J 2907
Patent
active
049163574
ABSTRACT:
A color cathode ray tube according to this invention comprises a cylindrical neck section having an electron gun which emits three electron beams, a funnel section extending from the neck section, and a panel section having a faceplate on which an image is formed. Phosphor stripes for emitting red, green, and blue light rays, upon electron beams landing thereon, are formed on an inner surface of a faceplate of the panel. A shadow mask having slit apertures for directing the three electron beams onto the corresponding phosphor stripes is arranged in the panel, and is welded to a mask frame which is suspended and supported on the panel by supporting structures welded to the frame. Each supporting structure comprises a fixed section secured to the frame, and a movable section having a hole into which a panel pin is fitted. The supporting structures are strongly resistant to impact forces, as a result of having twist-prevention sections which are fixed close to a movable section thereof which is liable to plastic deformation.
REFERENCES:
patent: 3454813 (1969-07-01), Lewinson
patent: 3743878 (1973-07-01), Kautz et al.
patent: 4335329 (1982-06-01), Fukuzawa et al.
patent: 4358702 (1982-11-01), Gijrath et al.
patent: 4506188 (1985-03-01), Puhak
Hasegawa Masami
Nakamura Michio
Sone Toshinao
Takahashi Tohru
Horabik Michael
Kabushiki Kaisha Toshiba
Yusko Donald J.
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