Title:
CATHODE RAY TUBE NECK GLASS
Document Type and Number:
WIPO Patent Application WO2000005738
Kind Code:
A3
Abstract:
A cathode ray tube (10) with an improved tubular glass neck member having a softening point in the range 640-650 DEG C, a strain point in the range of 420-425 DEG C, a coefficient of thermal expansion in the range of 94-97 x 10-7/ DEG C, and a linear x-ray absorption value of at least 100 cm-1 and a composition, as calculated in weight % on an oxide basis, consisting essentially of 46.5-49.5 % SiO(2), 1.5-2 % Al(2)O(3), 0.5-1.5 % Na(2)O, 10-12 % K(2)O, 2-3 % SrO, 1-1.8 % BaO, 32-34 % PbO, 1-1.5 % ZnO and a fining agent.
Inventors:
TAMMARO DAVID A (US)
Application Number:
PCT/US1999/013990
Publication Date:
April 27, 2000
Filing Date:
June 21, 1999
Export Citation:
Assignee:
CORNING INC (US)
TAMMARO DAVID A (US)
TAMMARO DAVID A (US)
International Classes:
C03C3/105; C03C4/08; H01J29/86; (IPC1-7): C03C3/105; H01J31/00
Foreign References:
| US5192718A | 1993-03-09 |
Other References:
See also references of EP 1116253A4
Download PDF: