Photomask case structure

Details Photomask case structure Photomask case structure

2011-04-26

2011-04-26

Bui, Luan K (Department: 3728)

Special receptacle or package

For plate or sheet

Fragile or sensitive

C206S710000

Reexamination Certificate

active

07931146

ABSTRACT:
The present invention relates to a photomask case structure, and more particularly to a photomask case able to firmly fix position of a photomask, which includes an upper cover, a lower cover, supporters and position fixing pieces. Accordingly, when a photomask is retained within the photomask case, then elastic holding portions of the position fixing pieces are used to elastically hold one side of the photomask, beveled edges of the position fixing pieces are used to hold another side of the photomask, and finally press portions of the elastic holding portions are used to elastically press down on the surface of the photomask, thereby firmly retaining the photomask within the photomask case, and preventing impact damage to the photomask from occurring.

REFERENCES:
patent: 6216873 (2001-04-01), Fosnight et al.
patent: 7088430 (2006-08-01), Chiu
patent: 7581639 (2009-09-01), Chiu
patent: 2010/0126904 (2010-05-01), Cheng et al.

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