Color cathode ray tube

Details Color cathode ray tube Color cathode ray tube

2005-01-11

2005-01-11

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Screen

C313S408000

Reexamination Certificate

active

06841927

ABSTRACT:
A color cathode ray tube capable of improving the luminance attenuation characteristic and the explosion-proof characteristic through an improved shape of a panel is disclosed. In an equation F=Rdo/(Sd H 1.767), F>21, Tc/CFT≦1.35, and Rdi>(Ryi or Rxi) are satisfied, wherein Sd is a length of a diagonal effective picture of the panel, Rdo is a curvature radius of a diagonal outer surface, Ryo is a curvature radius of a vertical outer surface, Rxi, Ryi and Rdi are a horizontal, vertically and diagonal curvature radius, respectively, CFT is a thickness of a center portion, Tc is a thickness of a diagonal end of the effective surface, F is a planarizing rate of the outer curvature.

REFERENCES:
patent: 6025676 (2000-02-01), Ohama et al.
patent: 6232712 (2001-05-01), Pyun et al.
patent: 6388373 (2002-05-01), Nah

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