CA2050347A1 - Noircissement de masques a base de ni - Google Patents

Noircissement de masques a base de ni

Info

Publication number
CA2050347A1
CA2050347A1 CA2050347A CA2050347A CA2050347A1 CA 2050347 A1 CA2050347 A1 CA 2050347A1 CA 2050347 A CA2050347 A CA 2050347A CA 2050347 A CA2050347 A CA 2050347A CA 2050347 A1 CA2050347 A1 CA 2050347A1
Authority
CA
Canada
Prior art keywords
ftm
mask
nickel
surface layer
nickel phosphide
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.)
Granted
Application number
CA2050347A
Other languages
English (en)
Other versions
CA2050347C (fr
Inventor
Hua-Sou Tong
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.)
Zenith Electronics LLC
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2050347A1 publication Critical patent/CA2050347A1/fr
Application granted granted Critical
Publication of CA2050347C publication Critical patent/CA2050347C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01J9/02—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
    • 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
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • 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
    • H01J2229/0722—Frame
    • 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

La capacité de réception de puissance de masques perforés sous forme de feuille plate tendue à base de nickel-fer pour tubes à rayon cathodique à plaque plate (CRTs) est améliorée en utilisant un masque à feuille tendue (FTM) avec une couche superficielle mince qui est enrichie en nickel, lequel est converti en un composé de phosphure de nickel. La couche superficielle en phosphure de nickel est formée sur le masque par immersion du masque dans un premier bain d'un acide réducteur fort suivi d'une immersion du masque dans un second bain d'acide réducteur fort ayant une quantité efficace d'ions hypophosphites. La couche superficielle mince en composés de phosphure de nickel augmente l'émissivité du FTM et réduit la formation de dôme du FTM à des énergies élevées de faisceaux d'électrons. Le composé de phosphure de nickel peut être stabilisé dans le cycle de frittage-recuisson pendant le montage du tube à rayon cathodique ou dans une opération thermique séparée.
CA002050347A 1989-03-13 1990-02-28 Noircissement de masques a base de ni Expired - Fee Related CA2050347C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/308,904 US4929864A (en) 1987-12-02 1989-03-13 NI-based FTM shadow masks having a nickel phosphide black layer
US308,904 1989-03-13
PCT/US1990/001134 WO1990010946A1 (fr) 1989-03-13 1990-02-28 Noircissement de masques perfores ftm a base de nickel

Publications (2)

Publication Number Publication Date
CA2050347A1 true CA2050347A1 (fr) 1990-09-14
CA2050347C CA2050347C (fr) 2001-01-16

Family

ID=23195868

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002050347A Expired - Fee Related CA2050347C (fr) 1989-03-13 1990-02-28 Noircissement de masques a base de ni

Country Status (6)

Country Link
US (1) US4929864A (fr)
EP (1) EP0463060A1 (fr)
JP (1) JP2954344B2 (fr)
BR (1) BR9007217A (fr)
CA (1) CA2050347C (fr)
WO (1) WO1990010946A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5078812A (en) * 1990-10-09 1992-01-07 Rca Thomson Licensing Corp. Method for darkening a color-selection electrode
FR2737043B1 (fr) * 1995-07-18 1997-08-14 Imphy Sa Alliage fer-nickel pour masque d'ombre tendu
US6720722B2 (en) * 2002-03-13 2004-04-13 Thomson Licensing S.A. Color picture tube having a low expansion tensioned mask attached to a higher expansion frame
PL3659437T3 (pl) 2004-01-23 2022-08-22 Eden Research Plc Sposoby zabijania nicieni obejmujące aplikację enkapsulowanego składnika terpenowego
GB2431739A (en) * 2005-10-27 2007-05-02 Wolfson Microelectronics Plc Switch current sensing circuit

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6408044A (fr) * 1964-07-15 1966-01-17
DE2217280A1 (de) * 1972-04-11 1973-10-31 Metallgesellschaft Ag Lochblende in farbbildroehren
JPS4962073A (fr) * 1972-10-18 1974-06-15
US3867207A (en) * 1973-05-29 1975-02-18 Gte Sylvania Inc Method of blackening a steel component for a color cathode ray tube
JPS5956345A (ja) * 1982-09-25 1984-03-31 Toshiba Corp シヤドウマスクの製造方法
EP0121628A1 (fr) * 1983-03-03 1984-10-17 Tektronix, Inc. Tube cathodique avec masque d'ombre tendu
JP2672491B2 (ja) * 1984-07-31 1997-11-05 株式会社東芝 シヤドウマスク
JPS6176651A (ja) * 1984-09-21 1986-04-19 Toshiba Corp 受像管
JPS61273835A (ja) * 1985-05-29 1986-12-04 Mitsubishi Electric Corp シヤドウマスクの製造方法
US4704094A (en) * 1985-12-09 1987-11-03 Tektronix, Inc. Cathode ray tube and method of manufacture
US4695761A (en) * 1986-02-21 1987-09-22 Zenith Electronics Corporation Tension shadow mask support structure
US4767962A (en) * 1986-07-02 1988-08-30 Zenith Electronics Corporation Color cathode ray tube and tensible shadow mask blank for use therein
JP2551579B2 (ja) * 1987-04-15 1996-11-06 株式会社フジクラ 酸化物系超電導体と常電導体との接合構造

Also Published As

Publication number Publication date
EP0463060A1 (fr) 1992-01-02
JP2954344B2 (ja) 1999-09-27
US4929864A (en) 1990-05-29
CA2050347C (fr) 2001-01-16
WO1990010946A1 (fr) 1990-09-20
JPH04504185A (ja) 1992-07-23
BR9007217A (pt) 1992-02-18

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Legal Events

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