JPS55111037A - Method for manufacturing flat mask - Google Patents

Method for manufacturing flat mask

Info

Publication number
JPS55111037A
JPS55111037A JP1723379A JP1723379A JPS55111037A JP S55111037 A JPS55111037 A JP S55111037A JP 1723379 A JP1723379 A JP 1723379A JP 1723379 A JP1723379 A JP 1723379A JP S55111037 A JPS55111037 A JP S55111037A
Authority
JP
Japan
Prior art keywords
line
metal plate
cut out
rectangular
flat 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.)
Granted
Application number
JP1723379A
Other languages
Japanese (ja)
Other versions
JPS6143815B2 (en
Inventor
Shoji Ogura
Kiyomi Shimazawa
Akihiro 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.)
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 JP1723379A priority Critical patent/JPS55111037A/en
Publication of JPS55111037A publication Critical patent/JPS55111037A/en
Publication of JPS6143815B2 publication Critical patent/JPS6143815B2/ja
Granted 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
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/07—Shadow masks
    • H01J2229/0727—Aperture plate
    • H01J2229/0766—Details of skirt or border
    • H01J2229/0772—Apertures, cut-outs, depressions, or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE:To obtain a good quality shadow mask, by causing a rectangular cut out frame line on the opposite side of the flat mask of a rectangular frame to be a curved or straight smooth line. CONSTITUTION:A photosensitive film 22 is formed on both main surfaces of a rolled thin metal plate 21, and after two negatives, on which predetermined dots 23 and rectangular frame 24 are formed, are closely contacted on these photosensitve films 22 respectively, exposure process, development process, etching process, and photosensitive film removing process are carried out, and then electron-beam passing hole portions and a rectangular cut out frame line are formed on the metal plate 21 to obtain a flat mask. In this case, the envelope at the unevenness part 30 and the full line part 29 is a doubled line, and this doubled line part corresponding to the unevenness part 30, 31 is coated, for example, into black color so that the exposure light can not transmit therethrough. Thus, the rectangular cut out frame line on the metal plate 21 side is caused to be a curved or straight smooth line.
JP1723379A 1979-02-19 1979-02-19 Method for manufacturing flat mask Granted JPS55111037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1723379A JPS55111037A (en) 1979-02-19 1979-02-19 Method for manufacturing flat mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1723379A JPS55111037A (en) 1979-02-19 1979-02-19 Method for manufacturing flat mask

Publications (2)

Publication Number Publication Date
JPS55111037A true JPS55111037A (en) 1980-08-27
JPS6143815B2 JPS6143815B2 (en) 1986-09-30

Family

ID=11938221

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1723379A Granted JPS55111037A (en) 1979-02-19 1979-02-19 Method for manufacturing flat mask

Country Status (1)

Country Link
JP (1) JPS55111037A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100369975B1 (en) * 2000-08-29 2003-02-05 엘지전자 주식회사 Shadow mask in flat cathode ray tube and methode for bonding thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100369975B1 (en) * 2000-08-29 2003-02-05 엘지전자 주식회사 Shadow mask in flat cathode ray tube and methode for bonding thereof

Also Published As

Publication number Publication date
JPS6143815B2 (en) 1986-09-30

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