EP0114438B1 - Grün emittierender Leuchtstoff und Kathodenstrahlröhre mit einem derartigen Leuchtstoff - Google Patents

Grün emittierender Leuchtstoff und Kathodenstrahlröhre mit einem derartigen Leuchtstoff Download PDF

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Publication number
EP0114438B1
EP0114438B1 EP83201796A EP83201796A EP0114438B1 EP 0114438 B1 EP0114438 B1 EP 0114438B1 EP 83201796 A EP83201796 A EP 83201796A EP 83201796 A EP83201796 A EP 83201796A EP 0114438 B1 EP0114438 B1 EP 0114438B1
Authority
EP
European Patent Office
Prior art keywords
phosphor
color
phosphors
green
cathode ray
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
EP83201796A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0114438A3 (en
EP0114438A2 (de
Inventor
Klaus Dr. Carl
Wolfram Czarnojan
Thomas Dr. Welker
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 Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0114438A2 publication Critical patent/EP0114438A2/de
Publication of EP0114438A3 publication Critical patent/EP0114438A3/de
Application granted granted Critical
Publication of EP0114438B1 publication Critical patent/EP0114438B1/de
Expired legal-status Critical Current

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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
    • H01J29/187—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

Definitions

  • the invention relates to a green-emitting phosphor for heavy-duty cathode ray tubes, which consists of a mixture of a deep green and a yellowish-green emitting phosphor, and a cathode ray tube with such a phosphor.
  • Y 2 O 3 Eu or Y 2 0 2 S: Eu are usually used as red
  • ZnS Cu
  • Au or (Zn, Cd) S Cu as green
  • ZnS Ag as blue fluorescent (Funkschau, 44 (1972), 81-84).
  • the intrinsic energy and lumen yields of these phosphors are measured at low energy or current densities of the exciting electron beam.
  • the energy and lumen yields are measured at low excitation densities.
  • a decrease in the yields is observed with increasing energy density of the electron beam. This phenomenon is commonly referred to as saturation.
  • the phosphors of the ZnS type - depending on the composition and production method - show a saturation of up to 20%.
  • the invention has for its object to provide a green-emitting mixed phosphor for highly loaded cathode ray tubes, such as. B. projection tubes to create, which has the essential advantages of the above-mentioned one-component phosphors (low saturation, high extinction temperature, relatively high lumen yield) and at the same time has color coordinates according to the EBU standard for color television systems, so that a true color image transmission is achieved.
  • This object is achieved in that the mixture of Zn 2 Si0 4 : Mn and at least one phosphor of the general formula
  • X at least one of the elements Y, La, Gd and Lu and
  • Z represent at least one of the elements CI, Br, J and F.
  • Fig. 1 the color coordinates x and y of Zn 2 Si0 4 : Mn and LaOBr: Tb and the corresponding mixed phosphors are shown.
  • the EBU tolerance range is shown as a square with dashed side lines.
  • Zn 2 SiO 4 : Mn and LaOBr: Tb phosphors are weighed dry in a weight ratio of 4: 6. By dispersing both phosphor components in a 0.1% K 2 Si0 3 solution, these are mixed sufficiently.
  • a screen glass for a projection tube is coated by sedimentation in a Ba (N0 3 ) 2 solution, to which the phosphor dispersion is added. The total amount of phosphor is weighed in such a way that the thickness of the phosphor layer corresponds to a layer weight of 2 to 10 mg / cm 2 .
  • a thin Al film is evaporated. The phosphor screen is then heated.
  • Fig. 1 shows that the emission color of this mixed phosphor meets the EBU specifications.
  • the measured lumen yields and color points of this mixture and its components are listed in the table.
  • the saturation behavior of this mixture is plotted in FIG. 2 (curve AB) and is compared with the saturation behavior of LaOBr: Tb (curve B).

Landscapes

  • Luminescent Compositions (AREA)
EP83201796A 1982-12-29 1983-12-15 Grün emittierender Leuchtstoff und Kathodenstrahlröhre mit einem derartigen Leuchtstoff Expired EP0114438B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823248448 DE3248448A1 (de) 1982-12-29 1982-12-29 Leuchtstoff fuer kathodenstrahlroehren
DE3248448 1982-12-29

Publications (3)

Publication Number Publication Date
EP0114438A2 EP0114438A2 (de) 1984-08-01
EP0114438A3 EP0114438A3 (en) 1987-05-06
EP0114438B1 true EP0114438B1 (de) 1988-12-14

Family

ID=6182031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83201796A Expired EP0114438B1 (de) 1982-12-29 1983-12-15 Grün emittierender Leuchtstoff und Kathodenstrahlröhre mit einem derartigen Leuchtstoff

Country Status (4)

Country Link
US (1) US4559469A (enrdf_load_stackoverflow)
EP (1) EP0114438B1 (enrdf_load_stackoverflow)
JP (1) JPS59133283A (enrdf_load_stackoverflow)
DE (2) DE3248448A1 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993784A (ja) * 1982-11-18 1984-05-30 Toshiba Corp カラ−投写型映像装置及びその製造方法
CN1009513B (zh) * 1985-10-21 1990-09-05 东芝有限公司 阴极射线管
KR930006932B1 (ko) * 1990-05-11 1993-07-24 삼성전관 주식회사 녹색발광 형광체 및 그것을 사용한 브라운관
KR100342044B1 (ko) 1999-04-14 2002-06-27 김순택 녹색발광 형광체 조성물 및 이를 이용하여 제조된 음극선관
TW533447B (en) * 1999-12-14 2003-05-21 Matsushita Electric Ind Co Ltd Plasma display apparatus
WO2001093342A1 (de) 2000-05-29 2001-12-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Weiss emittierende beleuchtungseinheit auf led-basis
KR100424864B1 (ko) * 2001-05-03 2004-03-27 한국화학연구원 가돌륨옥시브로마이드계 녹색 형광체의 제조방법
KR100533922B1 (ko) * 2005-08-05 2005-12-06 알티전자 주식회사 황색 형광체 및 이를 이용한 백색 발광 장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110659A (en) * 1976-02-18 1978-08-29 Tektronix, Inc. Cathode ray tube storage target having increase life
DE2906505C2 (de) * 1978-02-20 1985-10-24 Japan Electric Industry Development Association, Tokio/Tokyo Fluoreszenzmischung und deren Verwendung in einem Fluoreszenzschirm einer durch langsame Elektronen angeregten Fluoreszenz-Anzeigevorrichtung
SU857212A1 (ru) * 1978-12-29 1981-08-23 Предприятие П/Я А-3917 Люминесцентный материал
JPS5790851A (en) * 1980-11-27 1982-06-05 Mitsubishi Electric Corp Cathode ray tube
JPS57124838A (en) * 1981-01-28 1982-08-03 Hitachi Ltd Color picture tube
JPS57174832A (en) * 1981-04-20 1982-10-27 Toshiba Corp Green light emission phosphor substance

Also Published As

Publication number Publication date
JPS59133283A (ja) 1984-07-31
EP0114438A3 (en) 1987-05-06
JPH0425991B2 (enrdf_load_stackoverflow) 1992-05-06
US4559469A (en) 1985-12-17
DE3248448A1 (de) 1984-07-05
DE3378708D1 (en) 1989-01-19
EP0114438A2 (de) 1984-08-01

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