Title:
薄型高機能偏光膜を含む光学フィルム積層体、及び、薄型高機能偏光膜を含む光学フィルム積層体の製造に用いるための延伸積層体
Document Type and Number:
Japanese Patent JP5511719
Kind Code:
B2
Abstract:
Provided is a continuous web of polarizing film for an organic EL display device which has a thickness of 10 µm or less and exhibits high optical characteristics. The polarizing film for an organic EL display device is made of a polyvinyl alcohol type resin having a molecularly oriented dichroic material, and formed through stretching to have a thickness of 10 µm or less and exhibit optical characteristics satisfying the following conditions: T ¥ 43; and P ¥ 99.5, wherein T is a single layer transmittance, and P is a polarization rate. The polarizing film for an organic EL display device may be prepared by subjecting a laminate comprising a non-crystallizable ester type thermoplastic resin substrate and the polyvinyl alcohol type resin layer formed on the substrate, to 2-stage stretching consisting of preliminary in-air stretching and in-boric-acid-solution stretching.
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Inventors:
Shusaku Goto
Kitagawa Takeharu
Minoru Miyatake
Tomohiro Mori
Takushi Kamijou
Kitagawa Takeharu
Minoru Miyatake
Tomohiro Mori
Takushi Kamijou
Application Number:
JP2011061921A
Publication Date:
June 04, 2014
Filing Date:
March 22, 2011
Export Citation:
Assignee:
NITTO DENKO CORPORATION
International Classes:
G02B5/30; B29C55/04; C08J5/18; C08J7/04; G02F1/1335; G02F1/13363; B29K29/00; B29K67/00; B29L9/00; B29L11/00
Domestic Patent References:
| JP2007090613A | ||||
| JP2010066756A | ||||
| JP2006268065A | ||||
| JP2003043257A | ||||
| JP2010152334A | ||||
| JP2000338329A | ||||
| JP2001343521A |
Foreign References:
| WO2007119560A1 |
Attorney, Agent or Firm:
Patent corporation PDS