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WO2003046942A3 - Display tube and display device - Google Patents

Display tube and display device Download PDF

Info

Publication number
WO2003046942A3
WO2003046942A3 PCT/IB2002/004800 IB0204800W WO03046942A3 WO 2003046942 A3 WO2003046942 A3 WO 2003046942A3 IB 0204800 W IB0204800 W IB 0204800W WO 03046942 A3 WO03046942 A3 WO 03046942A3
Authority
WO
WIPO (PCT)
Prior art keywords
ebg
ebr
ebb
electron
electron beam
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.)
Ceased
Application number
PCT/IB2002/004800
Other languages
French (fr)
Other versions
WO2003046942A2 (en
Inventor
Der Vaart Nijs C Van
Der Poel Willibrordus A J Van
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to AU2002348914A priority Critical patent/AU2002348914A1/en
Publication of WO2003046942A2 publication Critical patent/WO2003046942A2/en
Anticipated expiration legal-status Critical
Publication of WO2003046942A3 publication Critical patent/WO2003046942A3/en
Ceased 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
    • H01J29/48—Electron guns
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/023—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof secondary-electron emitting electrode arrangements
    • 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
    • H01J29/481—Electron guns using field-emission, photo-emission, or secondary-emission electron source
    • 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
    • H01J2229/4824—Constructional arrangements of electrodes

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

A display tube comprises an electron source (10), a module (20) provided with a guidance cavity (25R, 25G, 25B) for guiding electrons emitted by the electron source (10) to an exit aperture (27R, 27G, 27B) of the guidance cavity (25R, 25G, 25B), and beam-shaping means (30) for forming an electron beam (EBR, EBG, EBB) from guided electrons leaving the exit aperture (27R, 27G, 27B). The electron beam (EBR, EBG, EBB) travels towards a display screen (3). The beam-shaping means (30) are arranged to constitute, in operation, an electron lens for shaping the electron beam (EBR, EBG, EBB) so as to compensate for unwanted distortions of the shape of the electron beam (EBR, EBG, EBB) between the exit aperture (27R, 27G, 27B) and the display screen (3). These distortions are, for example, caused by the magnetic field of deflection means (2). The image quality of the display tube is improved.
PCT/IB2002/004800 2001-11-27 2002-11-15 Display tube and display device Ceased WO2003046942A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002348914A AU2002348914A1 (en) 2001-11-27 2002-11-15 Display tube and display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP01204559 2001-11-27
EP01204559.7 2001-11-27

Publications (2)

Publication Number Publication Date
WO2003046942A2 WO2003046942A2 (en) 2003-06-05
WO2003046942A3 true WO2003046942A3 (en) 2004-06-10

Family

ID=8181309

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/004800 Ceased WO2003046942A2 (en) 2001-11-27 2002-11-15 Display tube and display device

Country Status (3)

Country Link
AU (1) AU2002348914A1 (en)
TW (1) TW200409169A (en)
WO (1) WO2003046942A2 (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682074A (en) * 1984-11-28 1987-07-21 U.S. Philips Corporation Electron-beam device and semiconductor device for use in such an electron-beam device
US4814670A (en) * 1984-10-18 1989-03-21 Matsushita Electronics Corporation Cathode ray tube apparatus having focusing grids with horizontally and vertically oblong through holes
WO2000079558A1 (en) * 1999-06-22 2000-12-28 Koninklijke Philips Electronics N.V. Cathode ray tube
WO2001026131A1 (en) * 1999-10-01 2001-04-12 Koninklijke Philips Electronics N.V. Cathode ray tube
US20010015627A1 (en) * 1999-12-24 2001-08-23 Van Vroonhoven Jozef Cornelis Walterus Colour display device
WO2002027749A2 (en) * 2000-09-27 2002-04-04 Koninklijke Philips Electronics N.V. Cathode-ray tube
WO2002041342A2 (en) * 2000-11-20 2002-05-23 Koninklijke Philips Electronics N.V. Display device and cathode ray tube
WO2002097844A2 (en) * 2001-06-01 2002-12-05 Koninklijke Philips Electronics N.V. Display tube and display device
WO2002097845A2 (en) * 2001-06-01 2002-12-05 Koninklijke Philips Electronics N.V. Electron gun, cathode ray tube, and picture display device
WO2003019603A1 (en) * 2001-08-28 2003-03-06 Koninklijke Philips Electronics N.V. Pre-focus lens in a he-crt
WO2003041039A2 (en) * 2001-11-09 2003-05-15 Koninklijke Philips Electronics N.V. Vacuum display device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4814670A (en) * 1984-10-18 1989-03-21 Matsushita Electronics Corporation Cathode ray tube apparatus having focusing grids with horizontally and vertically oblong through holes
US4682074A (en) * 1984-11-28 1987-07-21 U.S. Philips Corporation Electron-beam device and semiconductor device for use in such an electron-beam device
WO2000079558A1 (en) * 1999-06-22 2000-12-28 Koninklijke Philips Electronics N.V. Cathode ray tube
WO2001026131A1 (en) * 1999-10-01 2001-04-12 Koninklijke Philips Electronics N.V. Cathode ray tube
US20010015627A1 (en) * 1999-12-24 2001-08-23 Van Vroonhoven Jozef Cornelis Walterus Colour display device
WO2002027749A2 (en) * 2000-09-27 2002-04-04 Koninklijke Philips Electronics N.V. Cathode-ray tube
WO2002041342A2 (en) * 2000-11-20 2002-05-23 Koninklijke Philips Electronics N.V. Display device and cathode ray tube
WO2002097844A2 (en) * 2001-06-01 2002-12-05 Koninklijke Philips Electronics N.V. Display tube and display device
WO2002097845A2 (en) * 2001-06-01 2002-12-05 Koninklijke Philips Electronics N.V. Electron gun, cathode ray tube, and picture display device
WO2003019603A1 (en) * 2001-08-28 2003-03-06 Koninklijke Philips Electronics N.V. Pre-focus lens in a he-crt
WO2003041039A2 (en) * 2001-11-09 2003-05-15 Koninklijke Philips Electronics N.V. Vacuum display device

Also Published As

Publication number Publication date
TW200409169A (en) 2004-06-01
WO2003046942A2 (en) 2003-06-05
AU2002348914A8 (en) 2003-06-10
AU2002348914A1 (en) 2003-06-10

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