BE822727A - CATHODIC TUBE WITH COMBINED INTERNAL-EXTERNAL MAGNETIC SHIELDING AND DEMAGNETIZING DEVICE - Google Patents

CATHODIC TUBE WITH COMBINED INTERNAL-EXTERNAL MAGNETIC SHIELDING AND DEMAGNETIZING DEVICE

Info

Publication number
BE822727A
BE822727A BE150969A BE150969A BE822727A BE 822727 A BE822727 A BE 822727A BE 150969 A BE150969 A BE 150969A BE 150969 A BE150969 A BE 150969A BE 822727 A BE822727 A BE 822727A
Authority
BE
Belgium
Prior art keywords
external magnetic
magnetic shielding
combined internal
demagnetizing device
cathodic tube
Prior art date
Application number
BE150969A
Other languages
French (fr)
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 filed Critical
Publication of BE822727A publication Critical patent/BE822727A/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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • 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
    • H01J29/003—Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
    • 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
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/867—Means associated with the outside of the vessel for shielding, e.g. magnetic shields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
    • H01J2229/003—Preventing or cancelling fields entering the enclosure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
    • H01J2229/0046—Preventing or cancelling fields within the enclosure
    • H01J2229/0053—Demagnetisation

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
BE150969A 1973-11-29 1974-11-28 CATHODIC TUBE WITH COMBINED INTERNAL-EXTERNAL MAGNETIC SHIELDING AND DEMAGNETIZING DEVICE BE822727A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US420324A US3867668A (en) 1973-11-29 1973-11-29 Cathode-ray tube having an internal-external magnetic shield and degaussing combination

Publications (1)

Publication Number Publication Date
BE822727A true BE822727A (en) 1975-03-14

Family

ID=23665997

Family Applications (1)

Application Number Title Priority Date Filing Date
BE150969A BE822727A (en) 1973-11-29 1974-11-28 CATHODIC TUBE WITH COMBINED INTERNAL-EXTERNAL MAGNETIC SHIELDING AND DEMAGNETIZING DEVICE

Country Status (12)

Country Link
US (1) US3867668A (en)
JP (1) JPS5426418B2 (en)
BE (1) BE822727A (en)
BR (1) BR7409924A (en)
CA (1) CA1017400A (en)
DE (1) DE2456315A1 (en)
ES (1) ES432172A1 (en)
FR (1) FR2253267B1 (en)
GB (1) GB1459656A (en)
IT (1) IT1027576B (en)
NL (1) NL7415534A (en)
PL (1) PL100481B1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5527957Y2 (en) * 1974-05-20 1980-07-04
JPS52120518U (en) * 1976-03-02 1977-09-13
JPS5413253A (en) * 1977-07-01 1979-01-31 Hitachi Ltd Color receiving tube
JPS5569938A (en) * 1978-11-21 1980-05-27 Toshiba Corp Color picture tube device
US4243913A (en) * 1979-08-29 1981-01-06 Rca Corporation Color picture tube magnetic shielding and degaussing structure
US4556821A (en) * 1984-03-15 1985-12-03 Rca Corporation Color image display system having an improved external magnetic shield
GB2177539B (en) * 1985-05-20 1989-07-05 Mitsubishi Electric Corp Magnetic shielding system in color television receiver
JPH07107831B2 (en) * 1986-12-26 1995-11-15 ソニー株式会社 Cathode ray tube
JPS63221790A (en) * 1987-03-11 1988-09-14 Sony Corp Cathode-ray tube
US4767969A (en) * 1987-05-26 1988-08-30 Honeywell, Inc. RF emission shield for CRT displays
US4996461A (en) * 1989-09-07 1991-02-26 Hughes Aircraft Company Closed loop bucking field system
US5081392A (en) * 1990-09-11 1992-01-14 Rca Thomson Licensing Corporation Color picture tube having an internal magnetic shield
US5097174A (en) * 1990-11-23 1992-03-17 Thomson Consumer Electronics, Inc. Color picture tube having an improved internal magnetic shield
ATE142047T1 (en) * 1991-03-08 1996-09-15 Philips Electronics Nv COLOR IMAGE REVIEW TUBE WITH INTERNAL MAGNETIC SHIELD CAP
US5180947A (en) * 1991-04-23 1993-01-19 Alliant Techsystems Inc. Shielded cathode ray tube
US5229689A (en) * 1991-05-14 1993-07-20 Apple Computer, Inc. Electrostatic shield for nearfield alternating electrical field emission reduction in a CRT display
KR100234168B1 (en) * 1997-06-28 1999-12-15 손욱 Inner shield for color cathode-ray tube
KR20030010096A (en) * 2001-07-25 2003-02-05 엘지.필립스디스플레이(주) Structure for shielding external magnetism in color cathode ray tube
US6686695B2 (en) * 2001-10-16 2004-02-03 Samsung Sdi Co., Ltd. Cathode ray tube having degaussing coil for minimizing variations in landing of electron beam
US11177114B1 (en) * 2020-09-15 2021-11-16 ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH Electrode arrangement, contact assembly for an electrode arrangement, charged particle beam device, and method of reducing an electrical field strength in an electrode arrangement

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3317781A (en) * 1963-12-19 1967-05-02 Rca Corp Television degaussing apparatus
US3322998A (en) * 1964-08-31 1967-05-30 Rca Corp Color purity correcting apparatus for colored television picture tubes
US3431454A (en) * 1967-07-31 1969-03-04 Zenith Radio Corp Cathode-ray tube magnetic shield and tube mount
US3564329A (en) * 1968-10-28 1971-02-16 Philco Ford Corp Shielding apparatus of metal plates strap-mounted on cathode ray tube for shielding against external magnetic fields
US3549932A (en) * 1969-04-04 1970-12-22 Motorola Inc Color television tube with shadow mask assembly provided with shield for reducing x-ray radiation and the effect of stray magnetic fields
US3571652A (en) * 1969-04-14 1971-03-23 Sony Corp Degaussing device for color picture tube having parallel-slitted beam-selecting grid
US3576395A (en) * 1969-05-21 1971-04-27 Sylvania Electric Prod Integral support and magentic shielding means for cathode-ray

Also Published As

Publication number Publication date
PL100481B1 (en) 1978-10-31
DE2456315A1 (en) 1975-06-05
GB1459656A (en) 1976-12-22
JPS5426418B2 (en) 1979-09-04
FR2253267A1 (en) 1975-06-27
FR2253267B1 (en) 1979-07-06
CA1017400A (en) 1977-09-13
US3867668A (en) 1975-02-18
AU7567874A (en) 1976-05-27
ES432172A1 (en) 1976-09-16
JPS50114927A (en) 1975-09-09
NL7415534A (en) 1975-06-02
IT1027576B (en) 1978-12-20
BR7409924A (en) 1976-05-25

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