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GB2000366A - Cathode ray tube screen - Google Patents

Cathode ray tube screen

Info

Publication number
GB2000366A
GB2000366A GB7826765A GB7826765A GB2000366A GB 2000366 A GB2000366 A GB 2000366A GB 7826765 A GB7826765 A GB 7826765A GB 7826765 A GB7826765 A GB 7826765A GB 2000366 A GB2000366 A GB 2000366A
Authority
GB
United Kingdom
Prior art keywords
ray tube
cathode ray
phosphor lines
tube screen
light
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.)
Granted
Application number
GB7826765A
Other versions
GB2000366B (en
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
Philips Gloeilampenfabrieken 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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB2000366A publication Critical patent/GB2000366A/en
Application granted granted Critical
Publication of GB2000366B publication Critical patent/GB2000366B/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
    • H01J29/327—Black matrix materials
    • 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
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2278—Application of light absorbing material, e.g. between the luminescent areas

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

A colour display tube in which, in order to overcome the problem of irregular light reflection from an aluminium film adhering to the phosphor lines of the display screen, the aluminium film (13) of the display screen adheres mainly to the light-absorbing coating (17) disposed between adjacent phosphor lines (14, 15, 16), which coating (17) is at least 3 mu m thicker than the phosphor lines. The light-absorbing coating (17) typically comprises grains, 50% by weight of the said grains preferably having a diameter exceeding 15 mu m. <IMAGE>
GB7826765A 1977-06-16 1978-06-13 Colour display tube and screen therefor Expired GB2000366B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7706617A NL7706617A (en) 1977-06-16 1977-06-16 COLOR IMAGE TUBE.

Publications (2)

Publication Number Publication Date
GB2000366A true GB2000366A (en) 1979-01-04
GB2000366B GB2000366B (en) 1982-01-27

Family

ID=19828731

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7826765A Expired GB2000366B (en) 1977-06-16 1978-06-13 Colour display tube and screen therefor

Country Status (9)

Country Link
JP (1) JPS5931826B2 (en)
BE (1) BE868113A (en)
CA (1) CA1101915A (en)
DE (1) DE2826134C2 (en)
ES (1) ES470761A1 (en)
FR (1) FR2394888A1 (en)
GB (1) GB2000366B (en)
IT (1) IT1095069B (en)
NL (1) NL7706617A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285224A3 (en) * 1987-04-03 1991-03-06 Koninklijke Philips Electronics N.V. Colour cathode ray tube

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5675212A (en) * 1992-04-10 1997-10-07 Candescent Technologies Corporation Spacer structures for use in flat panel displays and methods for forming same
FR2647592B1 (en) * 1989-05-23 1991-07-26 Thomson Tubes Electroniques THIN FILM CATHODOLUMINESCENT SHIELD FOR HIGH LUMINANCE CATHODE RAY TUBE
KR950004395B1 (en) * 1992-12-16 1995-04-28 삼성전관주식회사 C-crt having enhanced screen and manufacturing method for the same
DE69430568T3 (en) * 1993-02-01 2007-04-26 Candescent Intellectual Property Services, Inc., San Jose FLAT SCREEN WITH INTERNAL STRUCTURE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223872A (en) * 1962-08-13 1965-12-14 Paramount Pictures Corp Color screen with electron- and lightabsorptive material separating adjacent color strips
GB1306766A (en) * 1970-02-24 1973-02-14 Zenith Radio Corp Black-surround colour picture tubes
GB1324377A (en) * 1969-10-01 1973-07-25 Rca Corp Process for fabricating a screen structure for a cathode ray tube

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676127A (en) * 1970-01-23 1972-07-11 Staley Mfg Co A E Color television tube fabrication
US3890527A (en) * 1973-04-26 1975-06-17 Westinghouse Electric Corp Triad color screen having elements larger than mask apertures near screen center and smaller near periphery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223872A (en) * 1962-08-13 1965-12-14 Paramount Pictures Corp Color screen with electron- and lightabsorptive material separating adjacent color strips
GB1324377A (en) * 1969-10-01 1973-07-25 Rca Corp Process for fabricating a screen structure for a cathode ray tube
GB1306766A (en) * 1970-02-24 1973-02-14 Zenith Radio Corp Black-surround colour picture tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285224A3 (en) * 1987-04-03 1991-03-06 Koninklijke Philips Electronics N.V. Colour cathode ray tube

Also Published As

Publication number Publication date
ES470761A1 (en) 1979-02-01
DE2826134A1 (en) 1978-12-21
NL7706617A (en) 1978-12-19
IT7824534A0 (en) 1978-06-13
FR2394888B1 (en) 1983-03-25
GB2000366B (en) 1982-01-27
JPS547269A (en) 1979-01-19
JPS5931826B2 (en) 1984-08-04
FR2394888A1 (en) 1979-01-12
DE2826134C2 (en) 1987-02-05
BE868113A (en) 1978-12-14
IT1095069B (en) 1985-08-10
CA1101915A (en) 1981-05-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee