GB1149995A - Improvements relating to cathode-ray tubes - Google Patents

Improvements relating to cathode-ray tubes

Info

Publication number
GB1149995A
GB1149995A GB5884067A GB5884067A GB1149995A GB 1149995 A GB1149995 A GB 1149995A GB 5884067 A GB5884067 A GB 5884067A GB 5884067 A GB5884067 A GB 5884067A GB 1149995 A GB1149995 A GB 1149995A
Authority
GB
United Kingdom
Prior art keywords
cathode
dec
washing
glass window
phosphor
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
GB5884067A
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 GB1149995A publication Critical patent/GB1149995A/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
    • H01J9/221—Applying luminescent coatings in continuous layers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/56—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing sulfur
    • C09K11/562—Chalcogenides
    • C09K11/565—Chalcogenides with zinc cadmium
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Luminescent Compositions (AREA)

Abstract

1,149,995. Surface treating glassware. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 28 Dec., 1967 [31 Dec., 1966], No. 68840/67. Heading C1M. [Also in Divisions C4 and H1] A method of manufacturing a cathode-ray tube includes the steps of heating the tube glass window to above 350‹ C. and exposing to a gaseous sulphur compound, cooling and washing to remove the reaction product(s) formed, and subsequently forming a luminescent layer containing a ZnCdS phosphor over the treated surface with the aid of a suspension of the phosphor in a solution of an organic binder, e.g. polyvinyl alcohol. For example, a tube glass window of (in percentages by wt.) 65À3 SiO 2 , 0À5 Li 2 O, 7À4 Na 2 O, 6À8 K 2 O, 3À9 CaO, 13À2 BaO, 2À4 Al 2 O 3 , 0À3 Sb 2 O 3 and 0À2 GeO 2 is heated for 1 hour at 500‹ C. (440‹ C. also mentioned) in a flower of sulphur atmosphere which is oxidized to SO 2 and SO 3 , producing reaction products such as Na 2 SO 3 and Na 2 SO 4 which may be removed by washing with an aqueous solution containing 0À2% by wt. of sodium dodecyl sulphate.
GB5884067A 1966-12-31 1967-12-28 Improvements relating to cathode-ray tubes Expired GB1149995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6618490A NL6618490A (en) 1966-12-31 1966-12-31

Publications (1)

Publication Number Publication Date
GB1149995A true GB1149995A (en) 1969-04-23

Family

ID=19798615

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5884067A Expired GB1149995A (en) 1966-12-31 1967-12-28 Improvements relating to cathode-ray tubes

Country Status (4)

Country Link
DE (1) DE1614299A1 (en)
FR (1) FR1549895A (en)
GB (1) GB1149995A (en)
NL (1) NL6618490A (en)

Also Published As

Publication number Publication date
FR1549895A (en) 1968-12-13
NL6618490A (en) 1968-07-01
DE1614299A1 (en) 1970-07-09

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