GB1375626A - - Google Patents

Info

Publication number
GB1375626A
GB1375626A GB3704872A GB3704872A GB1375626A GB 1375626 A GB1375626 A GB 1375626A GB 3704872 A GB3704872 A GB 3704872A GB 3704872 A GB3704872 A GB 3704872A GB 1375626 A GB1375626 A GB 1375626A
Authority
GB
United Kingdom
Prior art keywords
phosphor
screen
tubes
colour
aug
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
GB3704872A
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 GB1375626A publication Critical patent/GB1375626A/en
Expired 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
    • 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
    • H01J31/206—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 with three coplanar electron beams

Landscapes

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

Abstract

1375626 Cathode-ray display tubes HITACHI Ltd 9 Aug 1972 [11 Aug 1971] 37048/72 Heading H1D A colour picture tube includes a fluorescent screen having a plurality of phosphor units equally pitched over the entire screen and a coating of black non-luminous substance therebetween, a colour selection electrode 6 between the screen and electron gun, each phosphor unit having an area larger than the crosssectional beam area at the screen, and the phosphor units either being substantially the same size over the whole screen surface or larger at the peripheral portion (e.g. curves 10 and 9 respectively as in Fig. 2 (not shown)). Mislanding causes are considered (e.g. terrestrial magnetism or deflection field distortion), and the peripheral diameter of shadow mask perforations may be reduced by 0À04 to 0-09 mms. In a matrix tube the phosphor dot diameter may be about 40 to 60Á smaller than other tubes to increase the light absorption area by the black substance. Perforations pitches for particular perforation diameters are given. Red, green, blue phosphor dot trios are exemplified, and also grid mask type colour tubes with phosphor stripes.
GB3704872A 1971-08-11 1972-08-09 Expired GB1375626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46060312A JPS4826465A (en) 1971-08-11 1971-08-11

Publications (1)

Publication Number Publication Date
GB1375626A true GB1375626A (en) 1974-11-27

Family

ID=13138510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3704872A Expired GB1375626A (en) 1971-08-11 1972-08-09

Country Status (6)

Country Link
US (1) US3835347A (en)
JP (1) JPS4826465A (en)
CA (1) CA957719A (en)
DE (1) DE2239610A1 (en)
FR (1) FR2148607B1 (en)
GB (1) GB1375626A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7709617A (en) * 1977-09-01 1979-03-05 Philips Nv COLOR TELEVISION PICTURE TUBE.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3146368A (en) * 1961-04-04 1964-08-25 Rauland Corp Cathode-ray tube with color dots spaced by light absorbing areas
US3344301A (en) * 1966-07-25 1967-09-26 Rauland Corp Subtractive type color cathode ray tube having overlapping color phosphor areas
US3614504A (en) * 1970-04-09 1971-10-19 Zenith Radio Corp Color picture tube screen with phosphors dots overlapping portions of a partial-digit-transmissive black-surround material

Also Published As

Publication number Publication date
CA957719A (en) 1974-11-12
FR2148607B1 (en) 1975-09-12
FR2148607A1 (en) 1973-03-23
US3835347A (en) 1974-09-10
DE2239610A1 (en) 1973-02-22
JPS4826465A (en) 1973-04-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee