Color cathode ray tube

Details Color cathode ray tube Color cathode ray tube

2006-08-22

2006-08-22

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Envelope

C220S00210A, C220S00210R

Reexamination Certificate

active

07095165

ABSTRACT:
A color CRT comprising a panel having a substantially flat outer surface and an inner surface having a certain curvature, and a mask having a plurality of electron beam passing holes, wherein an effective surface diagonal size of the panel is not greater than about 534 mm, wherein a central portion transmittance rate is within the range of about 45–75%, wherein the panel satisfies the condition 1.1≦(Rxs/Ryc)≦4.6, wherein Rxs is defined as an inner curvature radius along an edge of a longer side of the panel, and wherein Ryc is defined as an inner curvature radius along a line in the center of the panel parallel to the shorter side of the panel.

REFERENCES:
patent: 5107999 (1992-04-01), Canevazzi
patent: 6072270 (2000-06-01), Hu et al.
patent: 6274977 (2001-08-01), Pyun et al.
patent: 6433470 (2002-08-01), Watanabe et al.
patent: 6639346 (2003-10-01), Bae et al.
patent: 6806636 (2004-10-01), Kang et al.

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