Invention Grant
US08218937B2 Optical film, image display device, diethynylfluorene, and polymer thereof
有权
光学膜，图像显示装置，二乙炔基芴及其聚合物
- Patent Title: Optical film, image display device, diethynylfluorene, and polymer thereof
- Patent Title (中): 光学膜，图像显示装置，二乙炔基芴及其聚合物
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Application No.: US12443558Application Date: 2007-09-21
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Publication No.: US08218937B2Publication Date: 2012-07-10
- Inventor: Toshiyuki Iida , Yutaka Ohmori , Miyuki Kurogi
- Applicant: Toshiyuki Iida , Yutaka Ohmori , Miyuki Kurogi
- 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: JP2006-270530 20061002; JP2007-032858 20070214
- International Application: PCT/JP2007/068368 WO 20070921
- International Announcement: WO2008/041510 WO 20080410
- Main IPC: G02B6/00
- IPC: G02B6/00
Abstract:
An optical film of the present invention comprises a polyimide-based polymer represented by the following general formula (V). The optical film of the present invention exhibits an optical property such that wavelength dispersion of retardation scarcely changes ranging from the short wavelength side to the long wavelength side.Typically, the optical film of the present invention may be used as a retardation film of a liquid crystal display device.
Public/Granted literature
- US20100003490A1 OPTICAL FILM, IMAGE DISPLAY DEVICE, DIETHYNYLFLUORENE, AND POLYMER THEREOF Public/Granted day:2010-01-07
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