Panel for use in a cathode ray tube

Details Panel for use in a cathode ray tube Panel for use in a cathode ray tube

2007-05-22

2007-05-22

Patel, Vip (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Envelope

C313S461000

Reexamination Certificate

active

11034807

ABSTRACT:
A panel for use in a cathode ray tube includes a face portion for displaying picture images, a skirt portion extending backward from a perimeter of the face portion and a blend radius portion joining the skirt portion to the face portion. The panel for use in a cathode ray tube has average outside curvature radius R (mm) of the face portion which satisfies the following relationship: R≧10,000; wedge rate Td/Tc of the face portion which satisfies the following relationship: 2.0≦Td/Tc≦2.6; maximum compressive surface stress σCmax(MPa) of the face portion and the skirt portion which satisfies the following relationship: −30≦σCmax≦−15; and tensile bending stress σbt (MPa) at inner surface of the blend radius portion which satisfies the following relationship: σbt≦10.

REFERENCES:
patent: 6566802 (2003-05-01), Jeong
patent: 2003/0214221 (2003-11-01), Choo
patent: 2004/0140752 (2004-07-01), Choi

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