EP 1294009 A3 20040506 - Electron gun for color cathode ray tube
Title (en)
Electron gun for color cathode ray tube
Title (de)
Elektronenkanone für eine Farbkathodenstrahlröhre
Title (fr)
Cacon d'électron pour tube à rayons cathodiques couleur
Publication
Application
Priority
KR 20010056933 A 20010914
Abstract (en)
[origin: EP1294009A2] The present invention discloses an electron gun for a color cathode ray tube. In order to efficiently penetrate a speed modulation magnetic field of a velocity modulation coil, at least two focus electrodes of main electrodes receiving a fixed focus voltage are arranged in a row in the electron gun. When a sum of lengths of the focus electrodes is 'L' and a sum of intervals of the electrodes is 'g', '(gx100)/L = 5 SIMILAR 30(%)' is satisfied. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 29/48 (2006.01); H01J 29/50 (2006.01); H01J 29/58 (2006.01)
CPC (source: EP KR)
H01J 29/48 (2013.01 - KR); H01J 29/503 (2013.01 - EP); H01J 29/58 (2013.01 - EP); H01J 2229/5688 (2013.01 - EP)
Citation (search report)
- [A] US 6031326 A 20000229 - SUZUKI NOBUYUKI [JP], et al
- [A] US 4728858 A 19880301 - KOSHIGOE SHINPEI [JP], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
EP 1294009 A2 20030319; EP 1294009 A3 20040506; CN 1206695 C 20050615; CN 1405830 A 20030326; JP 2003092071 A 20030328; JP 2005129544 A 20050519; KR 100426569 B1 20040408; KR 20030023826 A 20030320
DOCDB simple family (application)
EP 02254610 A 20020701; CN 02127894 A 20020815; JP 2002181524 A 20020621; JP 2004371963 A 20041222; KR 20010056933 A 20010914