Flat panel for cathode-ray tube

Details Flat panel for cathode-ray tube Flat panel for cathode-ray tube

2006-02-28

2006-02-28

Glick, Edward J. (Department: 2882)

Electric lamp and discharge devices

Cathode ray tube

Envelope

C220S00210A, C220S00230A, C348S836000, C348S826000

Reexamination Certificate

active

07005791

ABSTRACT:
The present invention is related to a flat panel for cathode-ray tube capable of securing a large viewing area in the flat panel which is fitted into a window of a cabinet. In accordance with the panel of the present invention, stepped portions are formed along an edge of a face to fit the panel into the window of the cabinet. A depth from a surface of the face to a surface of the stepped portion is set to satisfy a condition of 2≧Tf/Tc≧0.7 where Tf is a vertical distance from a starting point of the stepped portion to an inner surface of the panel and Tc is a thickness of the center of the face. The panel in accordance with the present invention can provide perceptual flatness to a viewer; improved implosion-proof characteristics; and a structure capable of enduring an external mechanical impact. Further, the panel having a precise structure can be manufactured by a press-molding process.

REFERENCES:
patent: 5293096 (1994-03-01), Nakamura
patent: 6283814 (2001-09-01), Lee
patent: 6388373 (2002-05-01), Nah
patent: 6566802 (2003-05-01), Jeong
patent: 2005/0184637 (2005-08-01), Sugawara et al.
patent: 2000-113841 (2000-04-01), None
patent: 2000-0073436 (2000-05-01), None

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