Color cathode ray tube

Details Color cathode ray tube Color cathode ray tube

2007-02-13

2007-02-13

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Screen

C313S47700R

Reexamination Certificate

active

10763333

ABSTRACT:
A color CRT is disclosed to improve a production yield of a panel by reducing a damage due to a thermal impact in a furnace in a thermal treatment process in fabricating the panel and accomplish a light-weight product and a cost reduction compared to the same type CRT, for which a following condition is satisfied: −1.7168*Ln(U)+11.627≦(Rh*Rv*Ro/U)*Tc≦−2.0131*Ln(U)+13.645, where U is a diagonal size of an effective surface of the panel, Rh, Rv and Ro are parameters determined based on dimensions of the panel, and Tc is the thickness of the panel at its center point.

REFERENCES:
patent: 4537321 (1985-08-01), Tokita
patent: 4537322 (1985-08-01), Okada et al.
patent: 5155410 (1992-10-01), Wakasono et al.
patent: 6157124 (2000-12-01), Wakasono
patent: 2003/0122474 (2003-07-01), Lee
patent: 2004/0239232 (2004-12-01), Baek et al.
Wolfram Research MathWorld Natural Logarithm Article:□□http://mathworld.wolfram.com/NaturalLogarithm.html.

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