EP1205959A3 - Colour display tube with dynamic geometry correction - Google Patents

Colour display tube with dynamic geometry correction Download PDF

Info

Publication number
EP1205959A3
EP1205959A3 EP01127064A EP01127064A EP1205959A3 EP 1205959 A3 EP1205959 A3 EP 1205959A3 EP 01127064 A EP01127064 A EP 01127064A EP 01127064 A EP01127064 A EP 01127064A EP 1205959 A3 EP1205959 A3 EP 1205959A3
Authority
EP
European Patent Office
Prior art keywords
display tube
colour display
geometry correction
dynamic geometry
correction
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Withdrawn
Application number
EP01127064A
Other languages
German (de)
French (fr)
Other versions
EP1205959A2 (en
Inventor
Siegfried Metzger
Friedrich Karl Nelle
Johann Mitrowitsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSI Esslingen GmbH
Original Assignee
Matsushita Electronics Europe GmbH
Matsushita Display Devices Germany GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from EP00124838A external-priority patent/EP1139379A3/en
Application filed by Matsushita Electronics Europe GmbH, Matsushita Display Devices Germany GmbH filed Critical Matsushita Electronics Europe GmbH
Priority to EP01127064A priority Critical patent/EP1205959A3/en
Publication of EP1205959A2 publication Critical patent/EP1205959A2/en
Publication of EP1205959A3 publication Critical patent/EP1205959A3/en
Withdrawn legal-status Critical Current

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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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/702—Convergence correction arrangements therefor
    • H01J29/705—Dynamic convergence systems
    • 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
    • H01J2229/5687—Auxiliary coils

Landscapes

  • Details Of Television Scanning (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

Zur Kompensation von Geometrieverzeichnungen einer Farbbildröhre, insbesondere eines NS- oder OW-Innenkissens, wird erfindungsgemäß eine Farbbildröhre angegeben, die mit Kompensationsspulen zur dynamischen Korrektur versehen ist. Diese Kompensationsspulen werden vom Ablenkstrom durchflossen, so dass ihr Kompensationsfeld mit zunehmender Ablenkung stärker wird. Im Zusammenspiel mit den statischen Feldern von Korrekturmagneten lässt sich so die verbleibende Innenkissenverzeichnung in NS- und/oder OW-Richtung minimieren oder sogar ganz beseitigen.

Figure 00000001
To compensate for distortions in the geometry of a color picture tube, in particular an NS or OW inner cushion, a color picture tube is provided according to the invention, which is provided with compensation coils for dynamic correction. The deflection current flows through these compensation coils, so that their compensation field becomes stronger with increasing deflection. In combination with the static fields of correction magnets, the remaining inner cushion distortion in the NS and / or OW direction can be minimized or even completely eliminated.
Figure 00000001
EP01127064A 2000-11-14 2001-11-14 Colour display tube with dynamic geometry correction Withdrawn EP1205959A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01127064A EP1205959A3 (en) 2000-11-14 2001-11-14 Colour display tube with dynamic geometry correction

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00124838A EP1139379A3 (en) 2000-03-29 2000-11-14 Color display tube with reduced aberration
EP00124838 2000-11-14
EP01127064A EP1205959A3 (en) 2000-11-14 2001-11-14 Colour display tube with dynamic geometry correction

Publications (2)

Publication Number Publication Date
EP1205959A2 EP1205959A2 (en) 2002-05-15
EP1205959A3 true EP1205959A3 (en) 2004-02-04

Family

ID=26071593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01127064A Withdrawn EP1205959A3 (en) 2000-11-14 2001-11-14 Colour display tube with dynamic geometry correction

Country Status (1)

Country Link
EP (1) EP1205959A3 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2164055A1 (en) * 1970-12-26 1972-07-13 Denki Onkyo Co Ltd Magnetic deflector for television picture tubes
DE2937871A1 (en) * 1978-09-20 1980-04-10 Tokyo Shibaura Electric Co COLOR IMAGE TUBE ARRANGEMENT
WO2002019373A1 (en) * 2000-08-29 2002-03-07 Koninklijke Philips Electronics N.V. Display device comprising a deflection unit, and a deflection unit for a display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2164055A1 (en) * 1970-12-26 1972-07-13 Denki Onkyo Co Ltd Magnetic deflector for television picture tubes
DE2937871A1 (en) * 1978-09-20 1980-04-10 Tokyo Shibaura Electric Co COLOR IMAGE TUBE ARRANGEMENT
WO2002019373A1 (en) * 2000-08-29 2002-03-07 Koninklijke Philips Electronics N.V. Display device comprising a deflection unit, and a deflection unit for a display device

Also Published As

Publication number Publication date
EP1205959A2 (en) 2002-05-15

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