GB1040827A - Cathodoluminescent screens - Google Patents

Cathodoluminescent screens

Info

Publication number
GB1040827A
GB1040827A GB20801/65A GB2080165A GB1040827A GB 1040827 A GB1040827 A GB 1040827A GB 20801/65 A GB20801/65 A GB 20801/65A GB 2080165 A GB2080165 A GB 2080165A GB 1040827 A GB1040827 A GB 1040827A
Authority
GB
United Kingdom
Prior art keywords
phosphor
screen
microm
vanadate
dots
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
GB20801/65A
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.)
Verizon Laboratories Inc
GTE LLC
Original Assignee
General Telephone and Electronics Corp
General Telephone and Electronics Laboratories Inc
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 General Telephone and Electronics Corp, General Telephone and Electronics Laboratories Inc filed Critical General Telephone and Electronics Corp
Publication of GB1040827A publication Critical patent/GB1040827A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
    • C09K11/7794—Vanadates; Chromates; Molybdates; Tungstates
    • 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
    • H01J29/187—Luminescent screens screens with more than one luminescent material (as mixtures for the treatment of the screens)
    • 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
    • H01J29/20—Luminescent screens characterised by the luminescent material
    • 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
    • H01J29/322—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 with adjacent dots
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)

Abstract

The red phosphor of a three-colour C.R.T. screen comprises a trivalent metal vanadate activated by a rare earth, e.g. the vanadate of yttrium, gadolinium or lutetium activated 1-10, preferably 5m% of europium or proesodymium, or 0.5m% of samarium. The vanadate may have a particle size 2-20, prefarably 8, micron. The blue phosphor may be ZnS: Ag, 7-12 microm, the green phosphor may be Zn, CdS:Ag, 7-12 microm, or ZnSiO3:Mn, and both may be slightly poisoned by 0.5 p.p.m. cobalt. The screen may comprise clusters of dots, each cluster having one dot of each phosphor, and the tube may have three electron guns and an apertured mask adjacent the screen, so that each gun illuminates only the appropriate dot. The preparation of the screen, using U.V. radiation to polymerize dots of polyvinyl alcohol and phosphor, is described, using a dusting or a slurry method (using particles 0.5-7 microm size).
GB20801/65A 1964-05-28 1965-05-17 Cathodoluminescent screens Expired GB1040827A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US370804A US3243625A (en) 1964-05-28 1964-05-28 Cathodoluminescent screens including vanadates of yttrium, gadolinium or lutetium activated with europium or samarium

Publications (1)

Publication Number Publication Date
GB1040827A true GB1040827A (en) 1966-09-01

Family

ID=23461262

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20801/65A Expired GB1040827A (en) 1964-05-28 1965-05-17 Cathodoluminescent screens

Country Status (4)

Country Link
US (1) US3243625A (en)
DE (2) DE6606181U (en)
GB (1) GB1040827A (en)
NL (1) NL6506821A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331982A (en) * 1964-10-20 1967-07-18 Sylvania Electric Prod High pressure electric discharge device having a fill including vanadium
US3423621A (en) * 1966-03-07 1969-01-21 Rca Corp Color picture display containing a red-emitting europium-activated yttrium oxysulfide phosphor
US3382393A (en) * 1966-09-08 1968-05-07 Nat Video Corp Color television tube with faceplate panel of high transmittance in the red color
US3497749A (en) * 1966-11-28 1970-02-24 Rca Corp Color display tube whose blue emitter is a silver-activated zinc sulphide containing only one of magnesium,calcium,strontium and barium
NL6802411A (en) * 1967-02-20 1968-08-21
US3579016A (en) * 1967-10-23 1971-05-18 Gen Telephone & Elect Postdeflection tube with all rare earth phosphors
US3517243A (en) * 1969-03-17 1970-06-23 Texas Instruments Inc Color display screen employing two layers of phosphors,particles in the inner layer being small with respect to those in the outer layer and discontinuous in coverage
US4119883A (en) * 1969-06-30 1978-10-10 Sony Corporation Cathode ray tube
JPS48104461A (en) * 1972-04-14 1973-12-27
JPS5132271A (en) * 1974-09-13 1976-03-18 Hitachi Ltd Heimenhyojipaneru no keikotai no fuchakuhoho
JPS61266488A (en) * 1985-05-21 1986-11-26 Mitsubishi Electric Corp Phosphor for cathode ray tube
US5788881A (en) * 1995-10-25 1998-08-04 Micron Technology, Inc. Visible light-emitting phosphor composition having an enhanced luminescent efficiency over a broad range of voltages

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2569939A (en) * 1951-10-02 Infbared phosphoks
US2527365A (en) * 1945-05-22 1950-10-24 Rca Corp Doubly activated infrared phosphors
US2462547A (en) * 1945-08-08 1949-02-22 Polytechnic Inst Brooklyn Doubly activated infrared phosphors and methods of preparing same
US2522074A (en) * 1946-05-03 1950-09-12 Univ Rochester Method of rendering infrared radiation visible employing doubly activated alkaline earth sulfide phosphors
US2521124A (en) * 1946-08-09 1950-09-05 Neville F Miller Infrared strontium sulfide phosphors
US2570136A (en) * 1949-12-22 1951-10-02 Du Pont Infrared phosphors
US2569940A (en) * 1949-12-22 1951-10-02 Du Pont Infrared phosphors
US2729605A (en) * 1953-03-23 1956-01-03 Du Pont Samarium activated lanthanum oxychloride phosphor
US3037136A (en) * 1953-05-04 1962-05-29 Fairchild Camera Instr Co Cathode ray tube
US2791565A (en) * 1953-05-08 1957-05-07 Gen Electric Luminescent alkaline earth oxides
US3025161A (en) * 1955-06-27 1962-03-13 Sylvania Electric Prod Method of forming patterns
US3151945A (en) * 1958-02-03 1964-10-06 Bayer Ag Process for the production of pure borohydrides
US2988515A (en) * 1958-09-29 1961-06-13 Westinghouse Electric Corp Electroluminescent phosphor
US2991383A (en) * 1959-01-05 1961-07-04 Rca Corp Tri-color phosphor screens of the mosaic variety
USRE26184E (en) * 1961-08-07 1967-04-04 Van ultert

Also Published As

Publication number Publication date
DE6606181U (en) 1970-09-03
NL6506821A (en) 1965-11-29
DE1288629B (en) 1969-02-06
US3243625A (en) 1966-03-29

Similar Documents

Publication Publication Date Title
GB1040827A (en) Cathodoluminescent screens
GB1355308A (en) Photographic method for printing a screen structure for a cathode ray tube
JPS53136039A (en) Fluoresent substance containing pigment
GB1448705A (en) Method of forming a secondary electron emission preventive film and television colour picture tube containing the same
GB1152290A (en) Improvements relating to Luminescent Screens for Colour Television Picture Tubes
GB1357252A (en) Photographic method for printing a screen structure for a cathode-ray tube
JPS528992A (en) Fluorescent substance
MY128981A (en) Cathode-ray tube phosphor and method of manufacturing the same
GB1494434A (en) Red emitting phosphor
GB1168295A (en) Colour Picture Display Device
GB1323620A (en) Shadow masks for use in colour picture tubes
GB1197279A (en) Luminescent Materials
GB1177144A (en) Cathode-Ray Tube for Colour Television and Phosphorus therefor
GB1132182A (en) Improvements relating to luminescent materials
GB835688A (en) Improvements in or relating to cathode-ray tubes for colour-reproduction
GB1462205A (en) Phosphor screen for a post-deflection focusing type colour picture tube
GB1205774A (en) Cathodoluminiscent phosphors
CA1009702A (en) Shadow mask and associated phosphor screen for color cathode ray tube
GB1102136A (en) Improvement in colour television receiver tubes
GB1465181A (en) Apertured-mask cathode-ray tube
GB1405899A (en) Method of forming secondary electron emission preventing layer for post-deflection acceleration type colour picture tube
GB1236045A (en) Manufacture of colour cathode ray tube screens
GB1378990A (en) Luminescent screen assemblies for post-deflection focusing type colour picture tubes
GB1163047A (en) A Colour Picture Tube.
GB1432708A (en) Image tube