Invention Grant
- Patent Title: Continuous roll of optical function film, method of manufacture of liquid crystal display element employing same, and optical function film laminating device
- Patent Title (中): 光学功能膜的连续辊,使用其的液晶显示元件的制造方法和光学功能膜层压装置
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Application No.: US13814867Application Date: 2011-08-09
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Publication No.: US09019609B2Publication Date: 2015-04-28
- Inventor: Satoshi Hirata , Seiji Umemoto , Seiji Kondo , Takuya Nakazono
- Applicant: Satoshi Hirata , Seiji Umemoto , Seiji Kondo , Takuya Nakazono
- Applicant Address: JP Ibaraki-shi
- Assignee: Nitto Denko Corporation
- Current Assignee: Nitto Denko Corporation
- Current Assignee Address: JP Ibaraki-shi
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2010-191104 20100827
- International Application: PCT/JP2011/068159 WO 20110809
- International Announcement: WO2012/026326 WO 20120301
- Main IPC: G02B27/28
- IPC: G02B27/28 ; G02B5/30 ; B29D11/00 ; B32B37/18 ; B65H41/00 ; G02F1/13 ; B65H18/28 ; G02F1/1335

Abstract:
An objective of the present invention is to alleviate streaky display unevenness that occurs in liquid crystal display elements when feeding optical function film from a continuous roll having score lines in the width direction thereof and bonding the optical function film on a liquid crystal panel. A continuous roll comprises an optical film laminate (15) that is in the form of a continuous web wound into a roll and comprises at least an optical function film (10) and a carrier film (13) releasably placed on the optical function film (10). The optical function film (10) is divided into a plurality of cut pieces by score lines (16) formed along a widthwise direction of the optical film laminate (15). It is possible to resolve the problem by making the bending rigidity per unit longitudinal length of the optical function film fall within a specific range.
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