JPS5772232A - Production of shadow mask for color picture tube - Google Patents

Production of shadow mask for color picture tube

Info

Publication number
JPS5772232A
JPS5772232A JP14685680A JP14685680A JPS5772232A JP S5772232 A JPS5772232 A JP S5772232A JP 14685680 A JP14685680 A JP 14685680A JP 14685680 A JP14685680 A JP 14685680A JP S5772232 A JPS5772232 A JP S5772232A
Authority
JP
Japan
Prior art keywords
etching
condition
part side
production
shadow mask
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
JP14685680A
Other languages
Japanese (ja)
Inventor
Yasuhisa Otake
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14685680A priority Critical patent/JPS5772232A/en
Publication of JPS5772232A publication Critical patent/JPS5772232A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

PURPOSE:To form a passing hole part of electron beam of high fidelity and high grade on a negative mask, by changing an etching condition and an etching direction in the preceding step from those in the latter step of the etching process. CONSTITUTION:An etching process is devided into the preceding step and the latter step, and the preceding etching is carried out by spraying an etching liquid 27 under a high spray-pressure condition, only out of a large perforated part side, where the etching liquid 27 is at high temperature, specific gravity is small, and etching efficiency is high. Next, at the stage in which a recessed part 29 has been formed, the etching carried out by spraying an etching liquid from both main surface of a metal plate 21 under the condition where the spray-pressure of a small perforated part side is lower than that of the large perforated part side; where the etching liquid is at low temperature, specific gravity is high and the etching efficiency is low.
JP14685680A 1980-10-22 1980-10-22 Production of shadow mask for color picture tube Pending JPS5772232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14685680A JPS5772232A (en) 1980-10-22 1980-10-22 Production of shadow mask for color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14685680A JPS5772232A (en) 1980-10-22 1980-10-22 Production of shadow mask for color picture tube

Publications (1)

Publication Number Publication Date
JPS5772232A true JPS5772232A (en) 1982-05-06

Family

ID=15417096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14685680A Pending JPS5772232A (en) 1980-10-22 1980-10-22 Production of shadow mask for color picture tube

Country Status (1)

Country Link
JP (1) JPS5772232A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS591662A (en) * 1982-06-25 1984-01-07 Toshiba Corp Etching method of metallic plate
JPS5971239A (en) * 1982-10-15 1984-04-21 Toshiba Corp Production method of shadow mask
JPS59158051A (en) * 1983-02-28 1984-09-07 Toshiba Corp Manufacture of shadow mask
JPS61114439A (en) * 1984-11-08 1986-06-02 Dainippon Printing Co Ltd Shadow mask of high fineness
JPS61114440A (en) * 1984-11-08 1986-06-02 Dainippon Printing Co Ltd Shadow mask of high fineness

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS591662A (en) * 1982-06-25 1984-01-07 Toshiba Corp Etching method of metallic plate
JPH0450388B2 (en) * 1982-06-25 1992-08-14 Tokyo Shibaura Electric Co
JPS5971239A (en) * 1982-10-15 1984-04-21 Toshiba Corp Production method of shadow mask
JPH0447419B2 (en) * 1982-10-15 1992-08-03 Tokyo Shibaura Electric Co
JPS59158051A (en) * 1983-02-28 1984-09-07 Toshiba Corp Manufacture of shadow mask
JPH0519250B2 (en) * 1983-02-28 1993-03-16 Tokyo Shibaura Electric Co
JPS61114439A (en) * 1984-11-08 1986-06-02 Dainippon Printing Co Ltd Shadow mask of high fineness
JPS61114440A (en) * 1984-11-08 1986-06-02 Dainippon Printing Co Ltd Shadow mask of high fineness

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