WO2003096371A3 - Method for making a colour-selection mask for cathode ray tube - Google Patents

Method for making a colour-selection mask for cathode ray tube Download PDF

Info

Publication number
WO2003096371A3
WO2003096371A3 PCT/FR2003/001043 FR0301043W WO03096371A3 WO 2003096371 A3 WO2003096371 A3 WO 2003096371A3 FR 0301043 W FR0301043 W FR 0301043W WO 03096371 A3 WO03096371 A3 WO 03096371A3
Authority
WO
WIPO (PCT)
Prior art keywords
cathode ray
ray tube
mask
colour
making
Prior art date
Application number
PCT/FR2003/001043
Other languages
French (fr)
Other versions
WO2003096371A2 (en
Inventor
Giuseppe Magnone
Remo Bassetto
Guido Manciocco
Anna Mentuccia
Original Assignee
Thomson Licensing Sa
Giuseppe Magnone
Remo Bassetto
Guido Manciocco
Anna Mentuccia
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 Thomson Licensing Sa, Giuseppe Magnone, Remo Bassetto, Guido Manciocco, Anna Mentuccia filed Critical Thomson Licensing Sa
Priority to AU2003246769A priority Critical patent/AU2003246769A1/en
Publication of WO2003096371A2 publication Critical patent/WO2003096371A2/en
Publication of WO2003096371A3 publication Critical patent/WO2003096371A3/en

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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes
    • H01J9/146—Surface treatment, e.g. blackening, coating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/07—Shadow masks
    • H01J2229/0727—Aperture plate
    • H01J2229/0777—Coatings
    • H01J2229/0783—Coatings improving thermal radiation properties

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

The invention concerns a method for providing a protective anti-expansion layer on a perforated mask for cathode ray tube characterized in that it comprises the following steps: preparing a paste containing in weight percent a) 20 % to 40 % of a water-soluble dispersant, b) 45 % to 70 % of metal oxides such as bismuth and/or silicon and/or tungsten oxide, c) sintered glass powder; depositing the paste on the mask surface to produce a uniform layer on said surface; high-temperature melting. The resulting layer enables local expansion of the mask surface to be avoided during the tube operation and the resulting image colour fading. The method provides the advantage of being economical and of using environment-friendly products.
PCT/FR2003/001043 2002-05-07 2003-04-03 Method for making a colour-selection mask for cathode ray tube WO2003096371A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003246769A AU2003246769A1 (en) 2002-05-07 2003-04-03 Method for making a colour-selection mask for cathode ray tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI02A000961 2002-05-07
IT2002MI000961A ITMI20020961A1 (en) 2002-05-07 2002-05-07 MANUFACTURING PROCEDURE OF A COLORING MASK FOR CATHODE RAYS

Publications (2)

Publication Number Publication Date
WO2003096371A2 WO2003096371A2 (en) 2003-11-20
WO2003096371A3 true WO2003096371A3 (en) 2004-04-15

Family

ID=11449842

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2003/001043 WO2003096371A2 (en) 2002-05-07 2003-04-03 Method for making a colour-selection mask for cathode ray tube

Country Status (3)

Country Link
AU (1) AU2003246769A1 (en)
IT (1) ITMI20020961A1 (en)
WO (1) WO2003096371A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01194234A (en) * 1988-01-28 1989-08-04 Mitsubishi Electric Corp Manufacture of color cathode-ray tube
EP0357256A1 (en) * 1988-08-31 1990-03-07 RCA Thomson Licensing Corporation Color cathode-ray tube
KR940007246B1 (en) * 1992-02-07 1994-08-10 삼성전관 주식회사 Manufacturing method for shadow mask
US6094003A (en) * 1996-10-31 2000-07-25 Samsung Display Devices Co., Ltd. Anti-doming composition for a shadow-mask and processes for preparing the same
US20020031611A1 (en) * 1998-02-16 2002-03-14 Matsushita Electric Industrial Co., Ltd. Method for producing electron tube
US20020043917A1 (en) * 2000-08-29 2002-04-18 Lg Electronics, Inc. Shadow mask in color CRT

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01194234A (en) * 1988-01-28 1989-08-04 Mitsubishi Electric Corp Manufacture of color cathode-ray tube
EP0357256A1 (en) * 1988-08-31 1990-03-07 RCA Thomson Licensing Corporation Color cathode-ray tube
KR940007246B1 (en) * 1992-02-07 1994-08-10 삼성전관 주식회사 Manufacturing method for shadow mask
US6094003A (en) * 1996-10-31 2000-07-25 Samsung Display Devices Co., Ltd. Anti-doming composition for a shadow-mask and processes for preparing the same
US20020031611A1 (en) * 1998-02-16 2002-03-14 Matsushita Electric Industrial Co., Ltd. Method for producing electron tube
US20020043917A1 (en) * 2000-08-29 2002-04-18 Lg Electronics, Inc. Shadow mask in color CRT

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199620, Derwent World Patents Index; Class L03, AN 1996-199157, XP002261804 *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 486 (E - 840) 6 November 1989 (1989-11-06) *

Also Published As

Publication number Publication date
AU2003246769A1 (en) 2003-11-11
AU2003246769A8 (en) 2003-11-11
WO2003096371A2 (en) 2003-11-20
ITMI20020961A0 (en) 2002-05-07
ITMI20020961A1 (en) 2003-11-07

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