EP 1557862 A1 20050727 - Cathode ray tube with a panel portion
Title (en)
Cathode ray tube with a panel portion
Title (de)
Kathodenstrahlröhre mit Frontscheibe
Title (fr)
Tube à rayons cathodiques comportant un panneau
Publication
Application
Priority
EP 04075133 A 20040120
Abstract (en)
A cathode ray tube (1) comprises an panel portion (2), a funnel portion (3) and a neck portion (4) with an electron gun (5) and a shadow mask. The shadow mask is made of a material with a high thermal expansion coefficient, and the panel portion has an outside radius of curvature (R) larger than 30000 mm. The thicknesses of the panel portion have the following ratios: <DF>0.85≤Ts/Td≤1 </DF> <DF>0.6≤Tl/Td≤0.72 </DF> <DF>0.67≤Tc/Td≤0.34 </DF> wherein Tc is a glass thickness at the centre of the front portion Ts is a glass thickness at the end of the short axis, at the end of the effective screen area Tl is a glass thickness at the end of the long axis, at the end of the effective screen area Td is a glass thickness at the end of the diagonal, at the end of the effective screen area. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 29/86 (2006.01)
CPC (source: EP)
H01J 29/861 (2013.01); H01J 2229/862 (2013.01)
Citation (search report)
- [Y] EP 1376645 A2 20040102 - LG PHILIPS DISPLAYS KOREA [KR]
- [Y] EP 0923107 A1 19990616 - TOSHIBA KK [JP]
- [A] EP 0825632 A1 19980225 - SONY CORP [JP]
- [A] US 6566802 B1 20030520 - JEONG SEONG HAN [KR]
- [E] WO 2004038755 A1 20040506 - KONINKL PHILIPS ELECTRONICS NV [NL], et al & EP 1383156 A1 20040121 - NIPPON ELECTRIC GLASS CO [JP]
- [Y] PATENT ABSTRACTS OF JAPAN vol. 2003, no. 02 5 February 2003 (2003-02-05)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04075133 A 20040120