GB1331539A - Luminescent screens - Google Patents

Luminescent screens

Info

Publication number
GB1331539A
GB1331539A GB4535871A GB4535871A GB1331539A GB 1331539 A GB1331539 A GB 1331539A GB 4535871 A GB4535871 A GB 4535871A GB 4535871 A GB4535871 A GB 4535871A GB 1331539 A GB1331539 A GB 1331539A
Authority
GB
United Kingdom
Prior art keywords
screen
photo
coating
light
sticky
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
GB4535871A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1331539A publication Critical patent/GB1331539A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • 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)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

1331539 Luminescent screens PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 Sept 1971 [2 Oct 1970] 45358/71 Heading HID A light-absorbing coating is provided on a colour television screen in the interstices of the phosphor areas by coating the screen with a photo-sensitive material which has a sticky surface when unexposed, this sticky property disappearing on exposure to radiation, exposing the screen three times through a shadow mask to expose areas of the surface on which phosphors will later be deposited, coating the sticky layers with a powder or suspension of the light absorbing material, and washing the latter off exposed areas. The three sets of phosphors are then deposited in known manner by photoconductive or by photo-resist processes. The photo-sensitive material may consist of " Cermifax " and disappears on firing after aluminizing the screen. The light-absorbing material may be graphite, MnO 2 or Fe 3 O 4 .
GB4535871A 1970-10-02 1971-09-29 Luminescent screens Expired GB1331539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7014480A NL7014480A (en) 1970-10-02 1970-10-02

Publications (1)

Publication Number Publication Date
GB1331539A true GB1331539A (en) 1973-09-26

Family

ID=19811208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4535871A Expired GB1331539A (en) 1970-10-02 1971-09-29 Luminescent screens

Country Status (7)

Country Link
JP (1) JPS5237352B1 (en)
BE (1) BE773389A (en)
CA (1) CA956498A (en)
DE (1) DE2145798C3 (en)
FR (1) FR2110958A5 (en)
GB (1) GB1331539A (en)
NL (1) NL7014480A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7510273A (en) * 1975-09-01 1977-03-03 Philips Nv PROCEDURE FOR MANUFACTURE OF A CATHODE RAY TUBE FOR DISPLAYING COLORED IMAGES AND CATHOD RAY TUBE MADE IN ACCORDANCE WITH THIS PROCESS.
FI71851C (en) * 1977-04-13 1987-02-09 Hitachi Ltd Method of forming a powder coating layer according to a pattern on an image surface of a color image tube
JPS53140268U (en) * 1977-04-13 1978-11-06
GB2304201B (en) * 1995-08-04 1999-04-07 Sony Corp Methods of forming a fluorescent screen on the front panel of a cathode ray tube

Also Published As

Publication number Publication date
DE2145798A1 (en) 1972-04-06
CA956498A (en) 1974-10-22
DE2145798B2 (en) 1978-05-24
FR2110958A5 (en) 1972-06-02
NL7014480A (en) 1972-04-05
JPS5237352B1 (en) 1977-09-21
BE773389A (en) 1972-03-30
DE2145798C3 (en) 1979-01-18

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Legal Events

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