EP0843333A3 - Color cathode ray tube provided with a beam convergence adjustment device - Google Patents
Color cathode ray tube provided with a beam convergence adjustment device Download PDFInfo
- Publication number
- EP0843333A3 EP0843333A3 EP97119888A EP97119888A EP0843333A3 EP 0843333 A3 EP0843333 A3 EP 0843333A3 EP 97119888 A EP97119888 A EP 97119888A EP 97119888 A EP97119888 A EP 97119888A EP 0843333 A3 EP0843333 A3 EP 0843333A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- neck portion
- ray tube
- cathode ray
- color cathode
- adjustment device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/64—Magnetic lenses
- H01J29/68—Magnetic lenses using permanent magnets only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/56—Correction of beam optics
- H01J2229/568—Correction of beam optics using supplementary correction devices
- H01J2229/5681—Correction of beam optics using supplementary correction devices magnetic
- H01J2229/5682—Permanently magnetised materials, e.g. permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/70—Electron beam control outside the vessel
- H01J2229/703—Electron beam control outside the vessel by magnetic fields
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
A color cathode ray tube includes an evacuated envelope
(1) formed of a panel portion (1A) carrying a phosphor screen
(4) on an inner surface thereof, a neck portion (1B), a funnel
portion (1C) connecting the panel portion and the neck
portion, a three-beam, in-line type electron gun (2) housed
in the neck portion for generating a center electron beam and
two side electron beams, a deflection device (6), adjustable
magnetic field producing device (7, 12) mounted on the neck
portion for moving the two side electron beams in mutually
opposing directions, and a magnetic structure mounted on the
neck portion for producing such a fixed magnetic field as to
move the two side electron beams in mutually opposing directions.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30271496A JPH10144236A (en) | 1996-11-14 | 1996-11-14 | Color cathode-ray tube |
JP302714/96 | 1996-11-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0843333A2 EP0843333A2 (en) | 1998-05-20 |
EP0843333A3 true EP0843333A3 (en) | 1999-06-02 |
Family
ID=17912301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97119888A Withdrawn EP0843333A3 (en) | 1996-11-14 | 1997-11-13 | Color cathode ray tube provided with a beam convergence adjustment device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0843333A3 (en) |
JP (1) | JPH10144236A (en) |
KR (1) | KR19980042445A (en) |
SG (1) | SG74603A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001185060A (en) | 1999-12-24 | 2001-07-06 | Hitachi Ltd | In-line type color receiver tube |
US7038368B2 (en) | 2003-08-01 | 2006-05-02 | Matsushita Toshiba Picture Display Co., Ltd. | Color picture tube apparatus having a pair of bar shaped magnets for correcting misconvergence due to the rotational shift of the electron beams |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3725831A (en) * | 1972-01-14 | 1973-04-03 | Rca Corp | Magnetic beam adjusting arrangements |
US3808570A (en) * | 1972-03-20 | 1974-04-30 | Rca Corp | Static convergence device for electron beams |
US3898597A (en) * | 1973-09-14 | 1975-08-05 | Philips Corp | Pairs of oppositely rotatable ring magnets for a color television display device |
US4091347A (en) * | 1976-03-17 | 1978-05-23 | Rca Corporation | Convergence apparatus for in-line beams |
US4117433A (en) * | 1977-04-25 | 1978-09-26 | Rca Corporation | Static convergence device including magnetic corrector apparatus |
US4670726A (en) * | 1984-12-20 | 1987-06-02 | Hitachi Metals, Ltd. | Convergence device for electron beams in color picture tube |
-
1996
- 1996-11-14 JP JP30271496A patent/JPH10144236A/en active Pending
-
1997
- 1997-11-07 SG SG1997003983A patent/SG74603A1/en unknown
- 1997-11-13 EP EP97119888A patent/EP0843333A3/en not_active Withdrawn
- 1997-11-14 KR KR1019970060107A patent/KR19980042445A/en active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3725831A (en) * | 1972-01-14 | 1973-04-03 | Rca Corp | Magnetic beam adjusting arrangements |
US3808570A (en) * | 1972-03-20 | 1974-04-30 | Rca Corp | Static convergence device for electron beams |
US3898597A (en) * | 1973-09-14 | 1975-08-05 | Philips Corp | Pairs of oppositely rotatable ring magnets for a color television display device |
US4091347A (en) * | 1976-03-17 | 1978-05-23 | Rca Corporation | Convergence apparatus for in-line beams |
US4117433A (en) * | 1977-04-25 | 1978-09-26 | Rca Corporation | Static convergence device including magnetic corrector apparatus |
US4670726A (en) * | 1984-12-20 | 1987-06-02 | Hitachi Metals, Ltd. | Convergence device for electron beams in color picture tube |
Also Published As
Publication number | Publication date |
---|---|
EP0843333A2 (en) | 1998-05-20 |
KR19980042445A (en) | 1998-08-17 |
JPH10144236A (en) | 1998-05-29 |
SG74603A1 (en) | 2000-08-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0739028A3 (en) | Method and apparatus for controlling dynamic convergence of a plurality of electron beams of a color cathode ray tube | |
MY119433A (en) | Cathode ray tube having an envelope shaped to reduce beam deflection power requirements | |
CA2319395A1 (en) | A fed crt having various control and focusing electrodes along with horizontal and vertical deflectors | |
TW341711B (en) | Cathode ray tube and method for manufacturing the same | |
HK177895A (en) | Colour display system and cathode ray tube | |
EP0833364A3 (en) | Cathode ray tube | |
SG29493G (en) | Crt and color display system | |
MX9504348A (en) | Display apparatus having an enhanced resolution shadow mask and method of making same. | |
MY117097A (en) | Color cathode ray tube having a small neck diameter | |
MY120780A (en) | Cathode ray tube | |
EP0843333A3 (en) | Color cathode ray tube provided with a beam convergence adjustment device | |
MY124593A (en) | Cathode ray tube | |
CA2178156A1 (en) | Television receiver including shading correction without deteriorating s/n ratio | |
MY115686A (en) | Cathode ray tube apparatus and method of manufacturing the same | |
JPS63298945A (en) | Color picture tube device | |
US5777430A (en) | Funnel for a cathode ray tube having a flare zone | |
TW373216B (en) | Color cathode ray tube having a small diameter neck | |
CA2086238A1 (en) | Deflection system with a controlled beam spot | |
EP0997924A3 (en) | Color CRT with cross-misconvergence correction device | |
EP0778605A3 (en) | An electron gun assembly for a color cathode ray tube apparatus | |
EP0991105A3 (en) | Cathode ray tube | |
CA2039822C (en) | Cathode-ray tube having improved 16 x 9 aspect ratio faceplate panel | |
US4490652A (en) | Flat cathode ray tube with keystone compensation | |
EP0589522B1 (en) | Cathode-ray tube | |
US6686708B2 (en) | Display device comprising a deflection unit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT NL |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AKX | Designation fees paid |
Free format text: DE FR GB IT NL |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20000601 |