EP1139379A3 - Color display tube with reduced aberration - Google Patents

Color display tube with reduced aberration Download PDF

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Publication number
EP1139379A3
EP1139379A3 EP00124838A EP00124838A EP1139379A3 EP 1139379 A3 EP1139379 A3 EP 1139379A3 EP 00124838 A EP00124838 A EP 00124838A EP 00124838 A EP00124838 A EP 00124838A EP 1139379 A3 EP1139379 A3 EP 1139379A3
Authority
EP
European Patent Office
Prior art keywords
deflection
vertical
coil pair
vertical deflection
pair
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Withdrawn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
EP00124838A
Other languages
German (de)
French (fr)
Other versions
EP1139379A2 (en
Inventor
Friedrich-Karl Nelle
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 EP00106713A external-priority patent/EP1139380A1/en
Application filed by Matsushita Electronics Europe GmbH, Matsushita Display Devices Germany GmbH filed Critical Matsushita Electronics Europe GmbH
Priority to EP00124838A priority Critical patent/EP1139379A3/en
Publication of EP1139379A2 publication Critical patent/EP1139379A2/en
Priority to EP01127064A priority patent/EP1205959A3/en
Publication of EP1139379A3 publication Critical patent/EP1139379A3/en
Withdrawn legal-status Critical Current

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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • H01J29/762—Deflecting by magnetic fields only using saddle coils or printed windings
    • 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
    • H01J2229/563—Aberrations by type

Landscapes

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

Abstract

Die Erfindung betrifft eine Farbbildröhre mit einer verbesserten Ablenkeinheit für geringere Abbildungsfelder. An der Farbbildröhre ist eine Ablenkeinheit mit einem vertikalen Ablenkspulenpaar und einem horizontalen Ablenkspulenpaar montiert. Das vertikale Ablenkspulenpaar erzeugt ein vertikales Ablenkfeld und das horizontale Ablenkspulenpaar erzeugt ein horizontales Ablenkfeld. Das vertikale Ablenkspulenpaar ist mehrteilig ausgebildet, wobei ein Teil näher am Elektronenstrahlerzeugungssystem angeordnet ist. Die wenigstens zwei Teile des vertikalen Ablenkspulenpaares sind so gestaltet, dass der Ablenkschwerpunkt des vertikalen Ablenkfeldes relativ zu dem des horizontalen Ablenkfeldes in Richtung des Elektronenstrahlerzeugungssystems verschoben ist. Dadurch können vertikale Abbildungsverzeichnungen im mittleren Bereich des Leuchtschirms minimiert werden. Zusätzliche an der Farbbildröhre vorgesehen Mittel schwächen den Ablenkstrom für das vertikale Ablenkspulenpaar am oberen und unteren Bildrand ab.

Figure 00000001
The invention relates to a color picture tube with an improved deflection unit for smaller imaging fields. A deflection unit with a pair of vertical deflection coils and a pair of horizontal deflection coils is mounted on the color picture tube. The vertical deflection coil pair creates a vertical deflection field and the horizontal deflection coil pair creates a horizontal deflection field. The vertical deflection coil pair is made up of several parts, one part being arranged closer to the electron gun. The at least two parts of the vertical deflection coil pair are designed such that the center of deflection of the vertical deflection field is shifted relative to that of the horizontal deflection field in the direction of the electron gun. This minimizes vertical distortions in the image in the central area of the fluorescent screen. Additional means provided on the color picture tube weaken the deflection current for the vertical deflection coil pair at the upper and lower edge of the picture.
Figure 00000001
EP00124838A 2000-03-29 2000-11-14 Color display tube with reduced aberration Withdrawn EP1139379A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00124838A EP1139379A3 (en) 2000-03-29 2000-11-14 Color display tube with reduced aberration
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
EP00106713A EP1139380A1 (en) 2000-03-29 2000-03-29 Deflection device for use in a color cathode-ray tube
EP00106713 2000-03-29
EP00124838A EP1139379A3 (en) 2000-03-29 2000-11-14 Color display tube with reduced aberration

Publications (2)

Publication Number Publication Date
EP1139379A2 EP1139379A2 (en) 2001-10-04
EP1139379A3 true EP1139379A3 (en) 2004-02-04

Family

ID=26070750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124838A Withdrawn EP1139379A3 (en) 2000-03-29 2000-11-14 Color display tube with reduced aberration

Country Status (1)

Country Link
EP (1) EP1139379A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1515356A1 (en) * 2003-09-15 2005-03-16 LG Philips Displays Device for displaying television pictures including a deflection unit therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4547707A (en) * 1982-06-01 1985-10-15 Denki Onkyo Company Limited Deflection yoke apparatus
EP0266181A2 (en) * 1986-10-31 1988-05-04 Kabushiki Kaisha Toshiba Colour picture tube apparatus
EP0311806A1 (en) * 1987-09-16 1989-04-19 Kabushiki Kaisha Toshiba Deflection unit for a colour cathode ray apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4547707A (en) * 1982-06-01 1985-10-15 Denki Onkyo Company Limited Deflection yoke apparatus
EP0266181A2 (en) * 1986-10-31 1988-05-04 Kabushiki Kaisha Toshiba Colour picture tube apparatus
EP0311806A1 (en) * 1987-09-16 1989-04-19 Kabushiki Kaisha Toshiba Deflection unit for a colour cathode ray apparatus

Also Published As

Publication number Publication date
EP1139379A2 (en) 2001-10-04

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