JPS55139742A - Highly precise shadow mask - Google Patents

Highly precise shadow mask

Info

Publication number
JPS55139742A
JPS55139742A JP4610079A JP4610079A JPS55139742A JP S55139742 A JPS55139742 A JP S55139742A JP 4610079 A JP4610079 A JP 4610079A JP 4610079 A JP4610079 A JP 4610079A JP S55139742 A JPS55139742 A JP S55139742A
Authority
JP
Japan
Prior art keywords
nickel
steel plate
hole
small holes
portions
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.)
Pending
Application number
JP4610079A
Other languages
Japanese (ja)
Inventor
Kazuyuki Koike
Jun Ishikawa
Yoshikazu Kondo
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.)
Toyo Kohan Co Ltd
Original Assignee
Toyo Kohan Co Ltd
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 Toyo Kohan Co Ltd filed Critical Toyo Kohan Co Ltd
Priority to JP4610079A priority Critical patent/JPS55139742A/en
Publication of JPS55139742A publication Critical patent/JPS55139742A/en
Pending 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
    • H01J29/06—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
    • H01J2229/0727—Aperture plate
    • H01J2229/0777—Coatings

Abstract

PURPOSE:To make easier machining and heating processes as well as raise accuracy by constructing a mask of a steel plate with a nickel-electrodeposited layer having a number of small holes whose hole wall is almost vertical and also whose sectional area is opened toward outside in combination with small holes. CONSTITUTION:A shadow mask is constituted of the steel plate 2 with the nickel layer 1 having the small holes 4 leading to the tapered large holes 3. The thickness of the nickel layer 1 is 4-30 micron m and the thickness of steel plate on the large hole side, having a sectional area opening toward outside for the hole wall leading to the small hole 4, is 0.05-0.2mm and also its pitch is 0.1-0.35mm. If, in etching, the nickel portions 6 and 7 extending into the large hole 3 of the steel plate 2 are too great, the portions 6 and 7 are liable to deform and also the distance between slits in slit hole tends to be disordered, so that the nickel portions 6 and 7 are preferably at most 70% of the impermeable portion 8 between the small holes 4 of the nickel layer 1.
JP4610079A 1979-04-17 1979-04-17 Highly precise shadow mask Pending JPS55139742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4610079A JPS55139742A (en) 1979-04-17 1979-04-17 Highly precise shadow mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4610079A JPS55139742A (en) 1979-04-17 1979-04-17 Highly precise shadow mask

Publications (1)

Publication Number Publication Date
JPS55139742A true JPS55139742A (en) 1980-10-31

Family

ID=12737566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4610079A Pending JPS55139742A (en) 1979-04-17 1979-04-17 Highly precise shadow mask

Country Status (1)

Country Link
JP (1) JPS55139742A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665338A (en) * 1983-05-17 1987-05-12 Kabushiki Kaisha Toshiba Front end elements for a color cathode ray tube
NL1003652C2 (en) * 1995-07-27 1997-07-25 Samsung Display Devices Co Ltd Method for making a shadow mask for color displays and a shadow mask made therewith.
EP0942450A1 (en) * 1998-03-12 1999-09-15 Sony Corporation Color selection electrode, method of producing color selection electrode and cathode ray tube
KR100703102B1 (en) 2003-01-09 2007-04-06 가부시키가이샤 히타치 디스프레이즈 Method for manufacturing organic electroluminescence device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665338A (en) * 1983-05-17 1987-05-12 Kabushiki Kaisha Toshiba Front end elements for a color cathode ray tube
NL1003652C2 (en) * 1995-07-27 1997-07-25 Samsung Display Devices Co Ltd Method for making a shadow mask for color displays and a shadow mask made therewith.
EP0942450A1 (en) * 1998-03-12 1999-09-15 Sony Corporation Color selection electrode, method of producing color selection electrode and cathode ray tube
US6354902B1 (en) 1998-03-12 2002-03-12 Sony Corporation Method of producing color selection electrode and cathode ray tube
US6384523B1 (en) 1998-03-12 2002-05-07 Sony Corporation Color selection electrode, method of producing color selection electrode and cathode ray tube
US6720720B2 (en) 1998-03-12 2004-04-13 Sony Corporation Color selection electrode, method of producing color selection electrode and cathode ray tube.
KR100703102B1 (en) 2003-01-09 2007-04-06 가부시키가이샤 히타치 디스프레이즈 Method for manufacturing organic electroluminescence device

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