GB1340225A - Manufacture of screens for cathode ray tubes - Google Patents

Manufacture of screens for cathode ray tubes

Info

Publication number
GB1340225A
GB1340225A GB3835471A GB3835471A GB1340225A GB 1340225 A GB1340225 A GB 1340225A GB 3835471 A GB3835471 A GB 3835471A GB 3835471 A GB3835471 A GB 3835471A GB 1340225 A GB1340225 A GB 1340225A
Authority
GB
United Kingdom
Prior art keywords
cathode ray
dots
ray tubes
aug
leave
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
GB3835471A
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.)
Space Systems Loral LLC
Original Assignee
Philco Ford Corp
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 Philco Ford Corp filed Critical Philco Ford Corp
Publication of GB1340225A publication Critical patent/GB1340225A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

1340225 Cathode ray tubes PHILCO-FORD CORP 16 Aug 1971 [14 Aug 1970] 38354/71 Heading H1D A process for making a multi-dot colour screen for a cathode ray tube comprises the steps of coating a panel with a light-sensitive layer comprising polyvinyl alcohol, dibasic calcium phosphate and ammonium dichromate and exposing and treating the layer to leave an array of dots, covering the panel with a lightabsorbing material then removing the dots together with the overlying areas of the lightabsorbing material with a solution of hydrogen peroxide and tribasic sodium phosphate to leave an array of holes for the reception of phosphor dots. The light-absorbing material can be lampblack suspended in isopropyl alcohol and water.
GB3835471A 1970-08-14 1971-08-16 Manufacture of screens for cathode ray tubes Expired GB1340225A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6382370A 1970-08-14 1970-08-14

Publications (1)

Publication Number Publication Date
GB1340225A true GB1340225A (en) 1973-12-12

Family

ID=22051745

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3835471A Expired GB1340225A (en) 1970-08-14 1971-08-16 Manufacture of screens for cathode ray tubes

Country Status (3)

Country Link
JP (1) JPS517977B1 (en)
CA (1) CA941662A (en)
GB (1) GB1340225A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019138680A1 (en) 2018-01-15 2019-07-18 Ａｇｃ株式会社 Fluorocopolymer dispersion, production method therefor, and article
WO2020175197A1 (en) 2019-02-26 2020-09-03 Ａｇｃ株式会社 Fluorine-containing copolymer, method for producing same, water repellent oil repellent agent composition, and article

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4919938A (en) * 1972-06-12 1974-02-21

Also Published As

Publication number Publication date
DE2137995B2 (en) 1972-11-30
CA941662A (en) 1974-02-12
JPS517977B1 (en) 1976-03-12
DE2137995A1 (en) 1972-04-06

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Legal Events

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