WO2002041342A3 - Display device and cathode ray tube - Google Patents

Display device and cathode ray tube Download PDF

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Publication number
WO2002041342A3
WO2002041342A3 PCT/EP2001/013144 EP0113144W WO0241342A3 WO 2002041342 A3 WO2002041342 A3 WO 2002041342A3 EP 0113144 W EP0113144 W EP 0113144W WO 0241342 A3 WO0241342 A3 WO 0241342A3
Authority
WO
WIPO (PCT)
Prior art keywords
electron beam
exit aperture
cathode
display device
ray tube
Prior art date
Application number
PCT/EP2001/013144
Other languages
French (fr)
Other versions
WO2002041342A2 (en
Inventor
Jozef J M Hulshof
Frederik C Gehring
Original Assignee
Koninkl 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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Priority to JP2002543459A priority Critical patent/JP2004514253A/en
Priority to KR1020027009198A priority patent/KR20020077885A/en
Priority to EP01995631A priority patent/EP1338024A2/en
Publication of WO2002041342A2 publication Critical patent/WO2002041342A2/en
Publication of WO2002041342A3 publication Critical patent/WO2002041342A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • 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

Abstract

The invention relates to a display device comprising a cathode ray tube including an electron source and an electron beam guidance cavity having an entrance aperture and an exit aperture for concentrating electrons emitted from the cathode in an electron beam. Furthermore, the cathode ray tube comprises a first electrode which is connectable to a first power supply for applying, in operation, an electric field with a first field strength E1 between the cathode and the exit aperture. (1 and E1 have values, which allow electron transport through the electron beam guidance cavity. Furthermore, a modulating means positioned between the cathode and the exit aperture is present for modulating a beam current to the display screen. According to the invention, the display device is provided with switching means for preventing the electron beam from passing through the exit aperture in a blanking period and for passing the electron beam through the exit aperture in a display period.
PCT/EP2001/013144 2000-11-20 2001-11-12 Display device and cathode ray tube WO2002041342A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2002543459A JP2004514253A (en) 2000-11-20 2001-11-12 Display device and cathode ray tube
KR1020027009198A KR20020077885A (en) 2000-11-20 2001-11-12 Display device and cathode ray tube
EP01995631A EP1338024A2 (en) 2000-11-20 2001-11-12 Display device and cathode ray tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP00204101 2000-11-20
EP00204101.0 2000-11-20

Publications (2)

Publication Number Publication Date
WO2002041342A2 WO2002041342A2 (en) 2002-05-23
WO2002041342A3 true WO2002041342A3 (en) 2002-08-01

Family

ID=8172294

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/013144 WO2002041342A2 (en) 2000-11-20 2001-11-12 Display device and cathode ray tube

Country Status (6)

Country Link
US (1) US6528958B2 (en)
EP (1) EP1338024A2 (en)
JP (1) JP2004514253A (en)
KR (1) KR20020077885A (en)
CN (1) CN1419706A (en)
WO (1) WO2002041342A2 (en)

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WO2003019603A1 (en) * 2001-08-28 2003-03-06 Koninklijke Philips Electronics N.V. Pre-focus lens in a he-crt
WO2003046942A2 (en) * 2001-11-27 2003-06-05 Koninklijke Philips Electronics N.V. Display tube and display device
AU2002366886A1 (en) * 2001-12-20 2003-07-09 Koninklijke Philips Electronics N.V. Cathode ray tube and electron gun
JP4485776B2 (en) * 2003-10-07 2010-06-23 パナソニック株式会社 Liquid crystal display device and control method of liquid crystal display device
US8118447B2 (en) 2007-12-20 2012-02-21 Altair Engineering, Inc. LED lighting apparatus with swivel connection
US7712918B2 (en) 2007-12-21 2010-05-11 Altair Engineering , Inc. Light distribution using a light emitting diode assembly
US8360599B2 (en) 2008-05-23 2013-01-29 Ilumisys, Inc. Electric shock resistant L.E.D. based light
US7976196B2 (en) 2008-07-09 2011-07-12 Altair Engineering, Inc. Method of forming LED-based light and resulting LED-based light
US7946729B2 (en) 2008-07-31 2011-05-24 Altair Engineering, Inc. Fluorescent tube replacement having longitudinally oriented LEDs
US8674626B2 (en) 2008-09-02 2014-03-18 Ilumisys, Inc. LED lamp failure alerting system
US8256924B2 (en) 2008-09-15 2012-09-04 Ilumisys, Inc. LED-based light having rapidly oscillating LEDs
US7938562B2 (en) 2008-10-24 2011-05-10 Altair Engineering, Inc. Lighting including integral communication apparatus
US8653984B2 (en) 2008-10-24 2014-02-18 Ilumisys, Inc. Integration of LED lighting control with emergency notification systems
US8901823B2 (en) 2008-10-24 2014-12-02 Ilumisys, Inc. Light and light sensor
US8444292B2 (en) 2008-10-24 2013-05-21 Ilumisys, Inc. End cap substitute for LED-based tube replacement light
US8214084B2 (en) 2008-10-24 2012-07-03 Ilumisys, Inc. Integration of LED lighting with building controls
US8324817B2 (en) 2008-10-24 2012-12-04 Ilumisys, Inc. Light and light sensor
US8556452B2 (en) 2009-01-15 2013-10-15 Ilumisys, Inc. LED lens
US8362710B2 (en) 2009-01-21 2013-01-29 Ilumisys, Inc. Direct AC-to-DC converter for passive component minimization and universal operation of LED arrays
US8664880B2 (en) 2009-01-21 2014-03-04 Ilumisys, Inc. Ballast/line detection circuit for fluorescent replacement lamps
US8330381B2 (en) 2009-05-14 2012-12-11 Ilumisys, Inc. Electronic circuit for DC conversion of fluorescent lighting ballast
US8299695B2 (en) 2009-06-02 2012-10-30 Ilumisys, Inc. Screw-in LED bulb comprising a base having outwardly projecting nodes
US7990604B2 (en) 2009-06-15 2011-08-02 Qualcomm Mems Technologies, Inc. Analog interferometric modulator
WO2011005579A2 (en) 2009-06-23 2011-01-13 Altair Engineering, Inc. Illumination device including leds and a switching power control system
WO2011119958A1 (en) 2010-03-26 2011-09-29 Altair Engineering, Inc. Inside-out led bulb
WO2011119907A2 (en) 2010-03-26 2011-09-29 Altair Engineering, Inc. Led light tube with dual sided light distribution
CA2792940A1 (en) 2010-03-26 2011-09-19 Ilumisys, Inc. Led light with thermoelectric generator
US8454193B2 (en) 2010-07-08 2013-06-04 Ilumisys, Inc. Independent modules for LED fluorescent light tube replacement
JP2013531350A (en) 2010-07-12 2013-08-01 イルミシス，インコーポレイテッド Circuit board mount for LED arc tube
US8523394B2 (en) 2010-10-29 2013-09-03 Ilumisys, Inc. Mechanisms for reducing risk of shock during installation of light tube
KR101761227B1 (en) * 2010-11-30 2017-07-26 씨이비티 주식회사 Method of blanking a particle beam in a particl beam column
US8870415B2 (en) 2010-12-09 2014-10-28 Ilumisys, Inc. LED fluorescent tube replacement light with reduced shock hazard
US9072171B2 (en) 2011-08-24 2015-06-30 Ilumisys, Inc. Circuit board mount for LED light
WO2013131002A1 (en) 2012-03-02 2013-09-06 Ilumisys, Inc. Electrical connector header for an led-based light
WO2014008463A1 (en) 2012-07-06 2014-01-09 Ilumisys, Inc. Power supply assembly for led-based light tube
US9271367B2 (en) 2012-07-09 2016-02-23 Ilumisys, Inc. System and method for controlling operation of an LED-based light
US9285084B2 (en) 2013-03-14 2016-03-15 Ilumisys, Inc. Diffusers for LED-based lights
US9267650B2 (en) 2013-10-09 2016-02-23 Ilumisys, Inc. Lens for an LED-based light
KR20160111975A (en) 2014-01-22 2016-09-27 일루미시스, 인크. Led-based light with addressed leds
US9510400B2 (en) 2014-05-13 2016-11-29 Ilumisys, Inc. User input systems for an LED-based light
US10161568B2 (en) 2015-06-01 2018-12-25 Ilumisys, Inc. LED-based light with canted outer walls

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5270611A (en) * 1989-06-01 1993-12-14 U.S. Philips Corporation Electric discharge element
WO2000079558A1 (en) * 1999-06-22 2000-12-28 Koninklijke Philips Electronics N.V. Cathode ray tube

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US5142206A (en) * 1991-07-15 1992-08-25 Thomson Consumer Electronics, Inc. Slow turn-on in a deflection circuit
RU2019881C1 (en) * 1991-12-26 1994-09-15 Физический институт им.П.Н.Лебедева РАН Cathode-ray tube
JPH0876707A (en) * 1994-07-08 1996-03-22 Sony Corp Display device by electronic beam and method for erasing display screen
KR100285899B1 (en) * 1996-12-30 2001-04-16 윤종용 Spot removal circuit
TW368241U (en) * 1998-02-17 1999-08-21 Acer Computer Co Ltd Generating circuit for display tube controlling grid voltage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5270611A (en) * 1989-06-01 1993-12-14 U.S. Philips Corporation Electric discharge element
WO2000079558A1 (en) * 1999-06-22 2000-12-28 Koninklijke Philips Electronics N.V. Cathode ray tube

Also Published As

Publication number Publication date
EP1338024A2 (en) 2003-08-27
US6528958B2 (en) 2003-03-04
JP2004514253A (en) 2004-05-13
WO2002041342A2 (en) 2002-05-23
CN1419706A (en) 2003-05-21
KR20020077885A (en) 2002-10-14
US20020060536A1 (en) 2002-05-23

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