GB1281582A - Electrical device containing phosphors - Google Patents

Electrical device containing phosphors

Info

Publication number
GB1281582A
GB1281582A GB33148/69A GB3314869A GB1281582A GB 1281582 A GB1281582 A GB 1281582A GB 33148/69 A GB33148/69 A GB 33148/69A GB 3314869 A GB3314869 A GB 3314869A GB 1281582 A GB1281582 A GB 1281582A
Authority
GB
United Kingdom
Prior art keywords
july
prepared
spheres
tube
phosphors
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
GB33148/69A
Inventor
Ernest A Dale
Martha J B Thomas
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.)
GTE Sylvania Inc
Original Assignee
GTE Sylvania 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 GTE Sylvania Inc filed Critical GTE Sylvania Inc
Publication of GB1281582A publication Critical patent/GB1281582A/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
    • H01J29/20—Luminescent screens characterised by the luminescent material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/44—Devices characterised by the luminescent material

Landscapes

  • Luminescent Compositions (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

1281582 Luminescent screens GTE SYL. VANIA Inc 1 July 1969 [1 July 1968] 33148/69 Heading C4S A phosphor, for use in a discharge tube, is prepared in the form of foraminous porous spheres. These are prepared by mixing solutions or colloidal suspensions of the necessary materials and spraying the solution through a stream of inert gas at a temperature sufficient to vaporize the solvent. The resultant spheres may have a diameter of between 3 and 20 Á, and, when hollow, may have a wall thickness between 0À5 and 8 Á. They are fired and applied to the tube in the form of a paint having an organic binder, e.g. a mixture of xylol-butanol and ethyl cellulose. Examples of phosphors are: titanium and tin activated magnesium borate, α-BaMgP 2 O 7 : Sn, Sb and Mn activated calcium chlorofluorophosphate. The Specification gives starting mixtures and firing temperatures.
GB33148/69A 1968-07-01 1969-07-01 Electrical device containing phosphors Expired GB1281582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74171768A 1968-07-01 1968-07-01

Publications (1)

Publication Number Publication Date
GB1281582A true GB1281582A (en) 1972-07-12

Family

ID=24981870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33148/69A Expired GB1281582A (en) 1968-07-01 1969-07-01 Electrical device containing phosphors

Country Status (5)

Country Link
US (1) US3668455A (en)
JP (1) JPS4942789B1 (en)
DE (1) DE1932843A1 (en)
FR (1) FR2014471A1 (en)
GB (1) GB1281582A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3781851A (en) * 1972-06-22 1973-12-25 Ibm Digital display device
US4020203A (en) * 1973-06-15 1977-04-26 Oscar Thuler Luminous marking in an indentation of an object
US5065519A (en) * 1990-05-23 1991-11-19 Trijicon, Inc. Iron sight with illuminated pattern
US5480582A (en) * 1993-06-30 1996-01-02 Pope; Edward J. A. Process for synthesizing amorphous silica microspheres with fluorescence behavior
JPH07292354A (en) * 1994-04-28 1995-11-07 Futaba Corp Fluorescent substance and its production
WO1998037166A1 (en) 1997-02-24 1998-08-27 Superior Micropowders Llc Sulfur-containing phosphor powders, methods for making phosphor powders and devices incorporating same
US6284156B1 (en) * 1998-11-19 2001-09-04 Kabushiki Kaisha Ohara Long-lasting phosphor, powdered long-lasting phosphor and method for manufacturing the powdered long-lasting phosphor
US6294867B1 (en) * 1999-01-25 2001-09-25 Judd Lynn Flourescent lamp with uniform output
JP3988337B2 (en) * 1999-10-01 2007-10-10 株式会社日立製作所 Phosphorus / vanadate phosphor, display device using the same, and light emitting device
GB2363611A (en) * 2000-04-20 2002-01-02 Kasei Optonix Phosphors consisting of hollow particles
DE10237598A1 (en) * 2002-08-16 2004-02-26 Philips Intellectual Property & Standards Gmbh Increasing the arcing diffusion of mercury free gas discharge lighting units is obtained by structuring inner and outer tubes
JP4124056B2 (en) * 2003-08-14 2008-07-23 昭栄化学工業株式会社 Method for producing phosphor powder

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3030313A (en) * 1958-06-19 1962-04-17 Du Pont Process for making thallium activated potassium iodide phosphor
US3023339A (en) * 1959-10-29 1962-02-27 Westinghouse Electric Corp Phosphor, lamp and method
DE1139596B (en) * 1960-05-05 1962-11-15 Merck Ag E Process for the production of a phosphor based on an alkali iodide activated with thallium as well as X-ray amplifier film containing this phosphor
US3360673A (en) * 1964-06-09 1967-12-26 Sylvania Electric Prod Lamps having a molybdenum phosphate phosphor
US3361270A (en) * 1965-10-04 1968-01-02 Tektronix Inc High contrast fluorescent screen having spaced phosphor layer and method of manufacture

Also Published As

Publication number Publication date
US3668455A (en) 1972-06-06
DE1932843A1 (en) 1970-07-09
FR2014471A1 (en) 1970-04-17
JPS4942789B1 (en) 1974-11-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees