Shadow mask for cathode ray tube having predetermined radius...

Details Shadow mask for cathode ray tube having predetermined radius... Shadow mask for cathode ray tube having predetermined radius...

2006-02-23

2009-06-02

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

C313S407000, C313S408000

Reexamination Certificate

active

07541727

ABSTRACT:
A cathode ray tube is disclosed, in which a shadow mask satisfies the following condition: Rx<1200 mm or Ry<1200 mm, and further satisfies the following condition: 0<Rd<3000 mm or Rd <−1500. The structural strength of the shadow mask is increased, thereby greatly improving thermal distortion and vibration problems of the shadow mask as well as greatly improving the qualities such as the drop characteristic, doming characteristic and inner pin distortion problem.

REFERENCES:
patent: 4881004 (1989-11-01), Inoue et al.
patent: 5247224 (1993-09-01), Bae
patent: 5416379 (1995-05-01), Inoue et al.
patent: 5631520 (1997-05-01), Inoue et al.
patent: 6472805 (2002-10-01), Nakagawa et al.
patent: 6650036 (2003-11-01), Nakagawa et al.
patent: 1031624 (1989-03-01), None

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