GB1142113A - Cathode ray tube shield - Google Patents

Cathode ray tube shield

Info

Publication number
GB1142113A
GB1142113A GB1942867A GB1942867A GB1142113A GB 1142113 A GB1142113 A GB 1142113A GB 1942867 A GB1942867 A GB 1942867A GB 1942867 A GB1942867 A GB 1942867A GB 1142113 A GB1142113 A GB 1142113A
Authority
GB
United Kingdom
Prior art keywords
shield
shadow
mask
shadowmask
colour television
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.)
Expired
Application number
GB1942867A
Inventor
Richard Jay Lindeman
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of GB1142113A publication Critical patent/GB1142113A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/20—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours
    • H01J31/201—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode
    • H01J31/203—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode with more than one electron beam
    • 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

Abstract

1,142,113. Colour television tubes. MOTOROLA Inc. 27 April, 1967 [8 Aug., 1966], No. 19428/67. Heading H1D. A shadow-mask colour television tube has an internal magnetic shield 30 extending from the shadow-mask frame 40 to the vicinity of the deflection yoke. The shield serves also to eliminate stray electrons and to reduce X-ray radiation from the shadow-mask assembly 27. The shield may be of annealed cold rolled steel blackened to absorb heat from the shadowmask. A pocket formed at 37 traps secondary electrons generated by the beam slightly overscanning the entrance aperture of the shadowmask frame. The shield may also serve as the tube anode in place of the usual graphite coating.
GB1942867A 1966-08-08 1967-04-27 Cathode ray tube shield Expired GB1142113A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57088866A 1966-08-08 1966-08-08

Publications (1)

Publication Number Publication Date
GB1142113A true GB1142113A (en) 1969-02-05

Family

ID=24281452

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1942867A Expired GB1142113A (en) 1966-08-08 1967-04-27 Cathode ray tube shield

Country Status (2)

Country Link
DE (1) DE1512326A1 (en)
GB (1) GB1142113A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2318906A (en) * 1996-10-31 1998-05-06 Lg Electronics Inc Shielding a CRT from the earth's magnetic field
GB2319887A (en) * 1996-11-30 1998-06-03 Lg Electronics Inc Cathode ray tubes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2318906A (en) * 1996-10-31 1998-05-06 Lg Electronics Inc Shielding a CRT from the earth's magnetic field
GB2318906B (en) * 1996-10-31 2001-09-05 Lg Electronics Inc Device for shielding earth magnetic field of a colour CRT
GB2319887A (en) * 1996-11-30 1998-06-03 Lg Electronics Inc Cathode ray tubes
GB2319887B (en) * 1996-11-30 2001-11-14 Lg Electronics Inc Rail structure of a cathode-ray tube

Also Published As

Publication number Publication date
DE1512326A1 (en) 1969-06-26

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