Glass panel and a cathode ray tube including the same

Details Glass panel and a cathode ray tube including the same Glass panel and a cathode ray tube including the same

2007-10-09

2007-10-09

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Envelope

C313S461000, C220S00210A

Reexamination Certificate

active

11170142

ABSTRACT:
A glass panel for use in a cathode ray tube includes a face portion for displaying images; a skirt portion extending from a periphery of the face portion backwards; and a blend radius portion for connecting the face portion and the skirt portion. The face portion is provided with an effective screen and a wedge portion positioned near a periphery portion of the effective screen. Compressive stress layers are formed on any regions of an inside and an outside surface of the face portion and the skirt portion, and a maximum compressive stress value σFmax of the face portion and a minimum compressive stress value σSmin of the skirt portion satisfy a relationship of σSmin/σFmax<0.5.

REFERENCES:
patent: 5964364 (1999-10-01), Shimizu et al.
patent: 6566802 (2003-05-01), Jeong
patent: 7026752 (2006-04-01), Kyono et al.
patent: 7088035 (2006-08-01), Sugawara et al.

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