Deposition mask package and deposition mask packaging method

Patent metadata

Field	Value
Publication number	US-2024316902-A1
Application number	US-202418732759-A
Country	US
Kind code	A1
Filing date	Jun 4, 2024
Priority date	Sep 29, 2016
Publication date	Sep 26, 2024
Grant date	—

Abstract

A deposition mask package according to the present embodiment includes a receiving portion, a lid portion that faces the receiving portion, a deposition mask that is arranged between the receiving portion and the lid portion and has an effective region in which a plurality of through-holes is formed. The receiving portion has a first opposing surface facing the lid portion and a concave portion provided on the first opposing surface. The concave portion is covered by a first flexible film. The effective region of the deposition mask is arranged on the concave portion with the first flexible film interposed therebetween.

First claim

1 . A deposition mask packaging method for packaging a deposition mask, which includes a first surface, a second surface positioned opposite to the first surface, and a plurality of through-holes extending from the first surface to the second surface, the deposition mask packaging method comprising:
obtaining a deposition mask stacked body having the deposition mask and an interposed sheet stacked on the first surface and the second surface of the deposition mask, the deposition mask stacked body placed on the receiving portion; arranging a lid portion on the deposition mask stacked body such that the receiving portion and the lid portion face each other; and sandwiching the deposition mask stacked body between the receiving portion and the lid portion, wherein a difference between a thermal expansion coefficient of the deposition mask and a thermal expansion coefficient of the interposed sheet is 7 ppm/° C. or less.

2 . The deposition mask packaging method according to claim 1 , wherein the interposed sheet has a dimension that enables a circumferential edge of the interposed sheet to protrude from the deposition mask over an entire circumference as viewed along a stacking direction of the deposition mask.

3 . The deposition mask packaging method according to claim 1 , wherein the deposition mask and the interposed sheet are formed using an iron alloy containing nickel in an amount of 30% by mass to 54% by mass.

4 . The deposition mask packaging method according to claim 1 , wherein the deposition mask and the interposed sheet are formed using an iron alloy containing chromium.

5 . The deposition mask packaging method according to claim 1 , wherein a material forming the interposed sheet is identical to a material forming the deposition mask.

6 . The deposition mask packaging method according to claim 1 , wherein a thickness of the interposed sheet is 20 μm to 100 μm.

7 . The deposition mask packaging method according to claim 1 , wherein the thickness of the deposition mask is 15 μm or more.

8 . The deposition mask packaging method according to claim 1 , wherein
the receiving portion has a first opposing surface facing the lid portion and a concave portion provided on the first opposing surface, ends on both sides in a first direction of the deposition mask are arranged on the first opposing surface of the receiving portion, a dimension of the interposed sheet in a second direction orthogonal to the first direction is smaller than a dimension of the concave portion in the second direction.

Assignees

• Dainippon Printing Co Ltd

Inventors

• Ikenaga Chikao
• OIKE Takumi
• MUKAIDA Tsukasa
• Watanabe Takeru

Classifications

• H10W90/00

  Package configurations · CPC title

• B65D81/05

  maintaining contents at spaced relation from package walls, or from other contents ({B65D81/022, B65D81/025, } B65D81/03 take precedence) · CPC title

• B65D79/00

  Kinds or details of packages, not otherwise provided for · CPC title

• B65B2220/16

  Packaging contents into primary and secondary packaging · CPC title

• B65B23/00

  Packaging fragile or shock-sensitive articles other than bottles; Unpacking eggs (embedding articles in shock-absorbing media B65B55/20) · CPC title