EP 0237005 A3 19881012 - CATHODE RAY TUBE FOR COLOR DISPLAY
Title (en)
CATHODE RAY TUBE FOR COLOR DISPLAY
Publication
Application
Priority
- JP 5291786 A 19860311
- JP 24456286 A 19861015
Abstract (en)
[origin: EP0237005A2] An electron gun has a G2 electrode having a horizontally positioned oblong groove thereon and three aperturs for passing three electron beams, which are disposed on a bottom of said groove, and intensity of an electric field on the axis of each electron gun between the G2 electrode (12) and a G3 electrode, diameters of respective apertures of a G1 electrode (11), the G2 electrode (12) and the G3 electrode (13), distance interval between an emitter and the G1 electrode (11), between the emitter and the G2 electrode (12) and between the G1 electrode (11) and the G2 (12) are selected in a predetermined relation, and thereby a generation of moire image interference fringes are prevented.
IPC 1-7
IPC 8 full level
H01J 29/50 (2006.01)
CPC (source: EP)
H01J 29/503 (2013.01); H01J 2229/4865 (2013.01); H01J 2229/4872 (2013.01)
Citation (search report)
- [A] EP 0117475 A1 19840905 - MATSUSHITA ELECTRONICS CORP [JP]
- [A] EP 0111872 A1 19840627 - MATSUSHITA ELECTRONICS CORP [JP]
- [A] GB 2020092 A 19791107 - RCA CORP
- [A] FR 2437062 A1 19800418 - RCA CORP [US]
- [A] PATENT ABSTRACTS OF JAPAN, vol. 4, no. 48 (E-6)[530], 12th April 1980, page 107 E 6; & JP-A-55 019 730 (MATSUSHITA DENSHI KOGYO K.K.) 12-02-1980
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 87103329 A 19870309