EP 0388901 A3 19910828 - COLOR CATHODE-RAY TUBE APPARATUS
Title (en)
COLOR CATHODE-RAY TUBE APPARATUS
Publication
Application
Priority
- JP 6932089 A 19890323
- JP 25709189 A 19891003
Abstract (en)
[origin: EP0388901A2] In an electron gun assembly, electron (BR, BG, BB) beams emitted from cathodes (KR, KG, KB) are focused in first cross-over (CO1) and accelerated and controlled by grids (G1, G2, G3) along three axes (ZR, ZG, ZB) arranged in-line. The controlled electron beams (BR, BG, BB) are weakly converged by unipotential lenses (ELS) and are converged in a vertical plane by a common single electron lens (VL1) having a lens power which is varied in accordance with a horizontal or vertical deflection of the electron beams (BR, BG, BB). The converged electron beams (BR, BG, BB) form second cross-over on the axes (ZR, ZG, ZB) which are shifted along the axes (ZR, ZG, ZB) are diverged from the second cross-overs (ZR, ZG, ZB). The diverged electron beams (BR, BG, BB) are further focused and converged onto a screen (SCN) by a main lens (LEL).
IPC 1-7
IPC 8 full level
H01J 29/48 (2006.01); H01J 29/50 (2006.01)
CPC (source: EP KR)
H01J 29/48 (2013.01 - KR); H01J 29/50 (2013.01 - KR); H01J 29/503 (2013.01 - EP); H01J 2229/4841 (2013.01 - EP); H01J 2229/4865 (2013.01 - EP); H01J 2229/4872 (2013.01 - EP); H01J 2229/4896 (2013.01 - EP)
Citation (search report)
- [A] EP 0231964 A1 19870812 - PHILIPS NV [NL]
- [A] US 4009410 A 19770222 - POMMIER CLAUDE, et al
- [A] EP 0104674 A1 19840404 - PHILIPS NV [NL]
- [A] US 4528476 A 19850709 - ALIG ROGER T [US]
- [A] US 4737682 A 19880412 - ALIG ROGER C [US], et al
- [A] PATENT ABSTRACTS OF JAPAN, vol. 10, no. 244 (E-430)[2300], 22nd August 1986; JP-A-61 074 246 (TOSHIBA CORP.) 16-04-1986
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0388901 A2 19900926; EP 0388901 A3 19910828; EP 0388901 B1 19960306; DE 69025634 D1 19960411; DE 69025634 T2 19961002; JP 2825287 B2 19981118; JP H0320937 A 19910129; KR 900015234 A 19901026; KR 930000353 B1 19930116
DOCDB simple family (application)
EP 90105263 A 19900320; DE 69025634 T 19900320; JP 25709189 A 19891003; KR 900004015 A 19900323