EP 1222678 A1 20020717 - SPACE-SAVING CATHODE RAY TUBE
Title (en)
SPACE-SAVING CATHODE RAY TUBE
Title (de)
RAUMSPARENDE KATHODENSTRAHLRÖHRE
Title (fr)
TUBE CATHODIQUE A ENCOMBREMENT REDUIT
Publication
Application
Priority
- US 0028928 W 20001019
- US 16065499 P 19991021
- US 16077299 P 19991021
- US 55980900 A 20000426
Abstract (en)
[origin: WO0129871A1] A cathode ray tube (10, 110, 210, 310, 410, 510) includes an electron gun (12, 112, 212, 312, 412, 512) directing electrons towards a faceplate (20, 120, 220, 320, 420, 520) having an electrode (22, 122, 222, 322, 422, 522) biased at screen potential. The electron beam is magnetically deflected to scan across the faceplate (20, 120, 220, 320, 420, 520) to impinge upon phosphors (23, 123, 223, 323, 423, 523) thereon to produce light depicting an image or information. A neck electrode (44, 144, 244, 344, 444, 544) near the tube neck is biased at or below screen potential and a second electrode (46, 146, 246, 346, 446, 546) between the neck electrode (44, 144, 244, 344, 444, 544) and the faceplate (20, 120, 220, 320, 420, 520) is biased at or above screen potential. As a result, the electrons are deflected over a greater total angle than is obtained from the magnetic deflection. A third electrode (48, 148, 248, 348, 448, 548) proximate the faceplate (20, 120, 220, 320, 420, 520) is biased at or below screen potential to direct electrons towards the faceplate (20, 120, 220, 320, 420, 520), thereby to increase the landing angle of the electrons thereon. A metal and ceramic support (360, 362, 364) includes a resistive voltage divider (366, 368) to which ones of the electrodes (344, 346, 348) connect.
[origin: WO0129871A1] A cathode ray tube (10, 110, 210, 310, 410, 510) includes an electron gun (12, 112, 212, 312, 412, 512) directing electrons towards a faceplate (20, 120, 220, 320, 420, 520) having an electrode (22, 122, 222, 322, 422, 522) biased at screen potential. The electron beam is magnetically deflected to scan across the faceplate (20, 120, 220, 320, 420, 520) to impinge upon phosphors (23, 123, 223, 323, 423, 523) thereon to produce light depicting an image or information. A neck electrode (44, 144, 244, 344, 444, 544) near the tube neck is biased at or below screen potential and a second electrode (46, 146, 246, 346, 446, 546) between the neck electrode (44, 144, 244, 344, 444, 544) and the faceplate (20, 120, 220, 320, 420, 520) is biased at or above screen potential. As a result, the electrons are deflected over a greater total angle than is obtained from the magnetic deflection. A third electrode (48, 148, 248, 348, 448, 548) proximate the faceplate (20, 120, 220, 320, 420, 520) is biased at or below screen potential to direct electrons towards the faceplate (20, 120, 220, 320, 420, 520), thereby to increase the landing angle of the electrons thereon. A metal and ceramic support (360, 362, 364) includes a resistive voltage divider (366, 368) to which ones of the electrodes (344, 346, 348) connect.
IPC 1-7
IPC 8 full level
H01J 29/70 (2006.01); H01J 29/72 (2006.01); H01J 29/80 (2006.01); H01J 29/81 (2006.01); H01J 31/12 (2006.01); H01J 31/20 (2006.01)
CPC (source: EP KR)
H01J 29/70 (2013.01 - EP); H01J 29/72 (2013.01 - EP); H01J 29/80 (2013.01 - EP); H01J 31/12 (2013.01 - EP KR); H01J 31/128 (2013.01 - EP); H01J 31/203 (2013.01 - EP); H01J 31/206 (2013.01 - EP); H01J 2229/582 (2013.01 - EP); H01J 2229/587 (2013.01 - EP); H01J 2229/88 (2013.01 - EP)
Citation (search report)
See references of WO 0129871A1
Citation (examination)
- US 5204585 A 19930420 - CHEN HSING-YAO [US]
- US 5036258 A 19910730 - CHEN HSING-YAO [US], et al
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
WO 0129871 A1 20010426; AU 1336501 A 20010430; CN 1208806 C 20050629; CN 1390359 A 20030108; EP 1222678 A1 20020717; JP 2003512700 A 20030402; KR 20020048969 A 20020624
DOCDB simple family (application)
US 0028928 W 20001019; AU 1336501 A 20001019; CN 00814491 A 20001019; EP 00975292 A 20001019; JP 2001531120 A 20001019; KR 20027004949 A 20020418