JPS57136731A - Manufacture of cover glass for display tube - Google Patents

Manufacture of cover glass for display tube

Info

Publication number
JPS57136731A
JPS57136731A JP2112181A JP2112181A JPS57136731A JP S57136731 A JPS57136731 A JP S57136731A JP 2112181 A JP2112181 A JP 2112181A JP 2112181 A JP2112181 A JP 2112181A JP S57136731 A JPS57136731 A JP S57136731A
Authority
JP
Japan
Prior art keywords
die
glass
pieces
glass plate
glass pieces
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
JP2112181A
Other languages
Japanese (ja)
Other versions
JPS6360494B2 (en
Inventor
Katsuyuki Matsushita
Kiyohisa Kato
Masamitsu Yamashita
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.)
KAGOSHIMA NIPPON DENKI KK
Nippon Electric Kagoshima Ltd
NEC Kagoshima Ltd
Original Assignee
KAGOSHIMA NIPPON DENKI KK
Nippon Electric Kagoshima Ltd
NEC Kagoshima 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 KAGOSHIMA NIPPON DENKI KK, Nippon Electric Kagoshima Ltd, NEC Kagoshima Ltd filed Critical KAGOSHIMA NIPPON DENKI KK
Priority to JP2112181A priority Critical patent/JPS57136731A/en
Publication of JPS57136731A publication Critical patent/JPS57136731A/en
Publication of JPS6360494B2 publication Critical patent/JPS6360494B2/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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/241—Manufacture or joining of vessels, leading-in conductors or bases the vessel being for a flat panel display
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/20—Uniting glass pieces by fusing without substantial reshaping

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To maintain the flatness of a cover glass for a display tube, and enhance its reliability by placing a glass plate and glass pieces over a mold, heating and fusing the glass pieces locally to the periphery of the glass plate, and forming a side wall part by heat molding. CONSTITUTION:A die 9 is provided with a groove Q in which glass pieces 10, 10', 10'' and the like are placed. Part of the die 9 which touches the inner sides of the pieces 10, 10' and 10'' is provided with a taper in order that release of the product is facilitated. The glass pieces 10-10'' are combined and inserted into the groove Q of the die 9. After the glass pieces 10-10'' are placed in such a way, a glass plate 1 and a male die 11 are placed over the pieces 10-10'' in that order, and the male and female die 9 and 11 are subjected to high-frequency dielectric heating by using N2 as the protection gas for the die 9. Since the above dielectric heating primarily raises the temperature of only the graphite die, the appearance of a glass plate 1 corresponding to a display screen is not deteriorated in its flatness. Here, the male die 11 moves down as its temperature rises, and the glass pieces 10, 10' and 10'' are fused to each other owing to downward pressure and extension developed due to their temperature rises.
JP2112181A 1981-02-16 1981-02-16 Manufacture of cover glass for display tube Granted JPS57136731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2112181A JPS57136731A (en) 1981-02-16 1981-02-16 Manufacture of cover glass for display tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2112181A JPS57136731A (en) 1981-02-16 1981-02-16 Manufacture of cover glass for display tube

Publications (2)

Publication Number Publication Date
JPS57136731A true JPS57136731A (en) 1982-08-23
JPS6360494B2 JPS6360494B2 (en) 1988-11-24

Family

ID=12046042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2112181A Granted JPS57136731A (en) 1981-02-16 1981-02-16 Manufacture of cover glass for display tube

Country Status (1)

Country Link
JP (1) JPS57136731A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0881661A1 (en) * 1997-05-30 1998-12-02 Kabushiki Kaisha Toshiba Image display apparatus and method of manufacturing the same
CN103319077A (en) * 2012-03-23 2013-09-25 盟立自动化股份有限公司 Mould structure for manufacturing moulded glass
US20190291377A1 (en) * 2016-11-08 2019-09-26 Mitsubishi Heavy Industries Machinery Systems, Ltd Sheet folding device and method, and box-making machine
CN112759235A (en) * 2020-12-25 2021-05-07 安徽金龙浩光电科技有限公司 3D forming curved surface insert die

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0881661A1 (en) * 1997-05-30 1998-12-02 Kabushiki Kaisha Toshiba Image display apparatus and method of manufacturing the same
CN103319077A (en) * 2012-03-23 2013-09-25 盟立自动化股份有限公司 Mould structure for manufacturing moulded glass
US20190291377A1 (en) * 2016-11-08 2019-09-26 Mitsubishi Heavy Industries Machinery Systems, Ltd Sheet folding device and method, and box-making machine
CN112759235A (en) * 2020-12-25 2021-05-07 安徽金龙浩光电科技有限公司 3D forming curved surface insert die

Also Published As

Publication number Publication date
JPS6360494B2 (en) 1988-11-24

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