JPS6477825A - Manufacture of shadow mask framing - Google Patents

Manufacture of shadow mask framing

Info

Publication number
JPS6477825A
JPS6477825A JP23217087A JP23217087A JPS6477825A JP S6477825 A JPS6477825 A JP S6477825A JP 23217087 A JP23217087 A JP 23217087A JP 23217087 A JP23217087 A JP 23217087A JP S6477825 A JPS6477825 A JP S6477825A
Authority
JP
Japan
Prior art keywords
shadow mask
ring
frame
side wall
dia
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
JP23217087A
Other languages
Japanese (ja)
Inventor
Masaki Shinoda
Hideo Tanabe
Takao Kawamura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP23217087A priority Critical patent/JPS6477825A/en
Publication of JPS6477825A publication Critical patent/JPS6477825A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent generation of wrinkles on a shadow mask by fixing a ring to the side wall of shadow mask, thermally expanding the shadow mask and ring, putting them over a frame, and by fixing the shadow mask to the frame with the aid of contraction of the ring caused by cooling. CONSTITUTION:A shadow mask 1 is press shaped so as to have a side wall 1a, and a ring 2 made of the same material as to the shadow mask 1 or a material having greater coefficient of thermal expansion than it is fixed to the side wall 1a by means of welding etc. Here the inner dia. of the shadow mask 1 is formed smaller than the outside dia. of a frame 3. The shadow mask 1 and ring 2 are heated and expanded so that the inner dia. of the shadow mask 1 becomes a little greater than the outside dia. of the frame 3. This shadow mask 1 with ring 2 expanded as mentioned is put over the frame 3.
JP23217087A 1987-09-18 1987-09-18 Manufacture of shadow mask framing Pending JPS6477825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23217087A JPS6477825A (en) 1987-09-18 1987-09-18 Manufacture of shadow mask framing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23217087A JPS6477825A (en) 1987-09-18 1987-09-18 Manufacture of shadow mask framing

Publications (1)

Publication Number Publication Date
JPS6477825A true JPS6477825A (en) 1989-03-23

Family

ID=16935094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23217087A Pending JPS6477825A (en) 1987-09-18 1987-09-18 Manufacture of shadow mask framing

Country Status (1)

Country Link
JP (1) JPS6477825A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07153374A (en) * 1993-11-26 1995-06-16 Nec Corp Manufacture of shadow mask structural body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07153374A (en) * 1993-11-26 1995-06-16 Nec Corp Manufacture of shadow mask structural body

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