WO2003052787A3 - Cathode ray tube and picture display device - Google Patents

Cathode ray tube and picture display device Download PDF

Info

Publication number
WO2003052787A3
WO2003052787A3 PCT/IB2002/005407 IB0205407W WO03052787A3 WO 2003052787 A3 WO2003052787 A3 WO 2003052787A3 IB 0205407 W IB0205407 W IB 0205407W WO 03052787 A3 WO03052787 A3 WO 03052787A3
Authority
WO
WIPO (PCT)
Prior art keywords
electron
deflection
lens
ray tube
ebg
Prior art date
Application number
PCT/IB2002/005407
Other languages
French (fr)
Other versions
WO2003052787A2 (en
Inventor
Marcellinus P C M Krijn
Willem L Ijzerman
Original Assignee
Koninkl Philips Electronics Nv
Marcellinus P C M Krijn
Willem L Ijzerman
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
Application filed by Koninkl Philips Electronics Nv, Marcellinus P C M Krijn, Willem L Ijzerman filed Critical Koninkl Philips Electronics Nv
Priority to AU2002366421A priority Critical patent/AU2002366421A1/en
Publication of WO2003052787A2 publication Critical patent/WO2003052787A2/en
Publication of WO2003052787A3 publication Critical patent/WO2003052787A3/en

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
    • H01J29/62—Electrostatic lenses
    • H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
    • H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
    • 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
    • H01J29/48—Electron guns
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • H01J29/503—Three or more guns, the axes of which lay in a common plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/48—Electron guns
    • H01J2229/4834—Electrical arrangements coupled to electrodes, e.g. potentials
    • H01J2229/4837—Electrical arrangements coupled to electrodes, e.g. potentials characterised by the potentials applied
    • H01J2229/4841—Dynamic potentials

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

The invention relates to a cathode ray tube (CRT) having an electron gun (1), which is provided with a beam-forming part (20) for forming an electron beam (EBR, EBG, EBB). The electron beam is imaged onto a display screen (3) by means of the electron gun (1) and deflection means (2). In operation, the deflection means (2) deflect the electron beam (EBR, EBG, EBB) towards any position on the display screen (3), thereby constituting a deflection lens (2'), the lens strength of which varies with the deflection angle. The electron gun (1) is further provided with an electron lens (30) near the beam-forming part (20), for forming the electron beam (EBR, EBG, EBB) into a crossover (10R, 10G, 10B) in the vertical direction. Said crossover is shiftable along the gun axis (MA) so as to compensate for the varying power of the deflection lens (2'). The crossover (10R, 10G, 10B) may be located anywhere between the electron lens (30) and the deflection means (2). This is particularly advantageous for large deflection angles, such as angles of 120 degrees or more.
PCT/IB2002/005407 2001-12-17 2002-12-12 Cathode ray tube and picture display device WO2003052787A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002366421A AU2002366421A1 (en) 2001-12-17 2002-12-12 Cathode ray tube and picture display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP01204937 2001-12-17
EP01204937.5 2001-12-17

Publications (2)

Publication Number Publication Date
WO2003052787A2 WO2003052787A2 (en) 2003-06-26
WO2003052787A3 true WO2003052787A3 (en) 2004-06-17

Family

ID=8181456

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/005407 WO2003052787A2 (en) 2001-12-17 2002-12-12 Cathode ray tube and picture display device

Country Status (3)

Country Link
AU (1) AU2002366421A1 (en)
TW (1) TW200411708A (en)
WO (1) WO2003052787A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388901A2 (en) * 1989-03-23 1990-09-26 Kabushiki Kaisha Toshiba Color cathode-ray tube apparatus
US5262702A (en) * 1989-03-23 1993-11-16 Kabushiki Kaisha Toshiba Color cathode-ray tube apparatus
US5739629A (en) * 1995-11-24 1998-04-14 Samsung Display Devices Co., Ltd. Electron gun for color cathode ray tube providing two electron beam cross over points
US6255788B1 (en) * 1993-06-30 2001-07-03 Hitachi, Ltd. Cathode ray tube with low dynamic correction voltage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388901A2 (en) * 1989-03-23 1990-09-26 Kabushiki Kaisha Toshiba Color cathode-ray tube apparatus
US5262702A (en) * 1989-03-23 1993-11-16 Kabushiki Kaisha Toshiba Color cathode-ray tube apparatus
US6255788B1 (en) * 1993-06-30 2001-07-03 Hitachi, Ltd. Cathode ray tube with low dynamic correction voltage
US5739629A (en) * 1995-11-24 1998-04-14 Samsung Display Devices Co., Ltd. Electron gun for color cathode ray tube providing two electron beam cross over points

Also Published As

Publication number Publication date
AU2002366421A1 (en) 2003-06-30
AU2002366421A8 (en) 2003-06-30
WO2003052787A2 (en) 2003-06-26
TW200411708A (en) 2004-07-01

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