发明授权
US06958797B2 Optical film having low chromaticity variation and quarter wavelength plate, and liquid crystal display using the same
失效
具有低色度变化和四分之一波长板的光学薄膜和使用其的液晶显示器
- 专利标题： Optical film having low chromaticity variation and quarter wavelength plate, and liquid crystal display using the same
- 专利标题（中）： 具有低色度变化和四分之一波长板的光学薄膜和使用其的液晶显示器
-
申请号： US10623590申请日： 2003-07-22
-
公开(公告)号： US06958797B2公开(公告)日： 2005-10-25
- 发明人: Satoru Kawahara , Naoki Takahashi , Hironori Motomura , Ikuo Kawamoto
- 申请人： Satoru Kawahara , Naoki Takahashi , Hironori Motomura , Ikuo Kawamoto
- 申请人地址： JP Ibaraki
- 专利权人： Nitto Denko Corporation
- 当前专利权人： Nitto Denko Corporation
- 当前专利权人地址： JP Ibaraki
- 代理机构： Westerman, Hattori, Daniels & Adrian LLP
- 优先权： JP2002-214340 20020723; JP2002-214341 20020723
- 主分类号： G02F1/1335
- IPC分类号： G02F1/1335 ; G02B5/30 ; G02F1/13363
摘要：
An optical film in which a function of a brightness enhancement film is maintained and variations in brightness and chromaticity within a film plane are suppressed is provided. An optical film is a laminate of an absorptive dichroic polarizing plate and a brightness enhancement film. A maximum chromaticity difference Δxy(max) of in-plane transmitted light is 0.008 or smaller after the optical film is attached to a glass plate and allowed to stand at 70° C. for 120 hours. The brightness enhancement film includes a layer having a circularly polarized light separating function, and a quarter wavelength plate. The quarter wavelength plate is a film showing an in-plane retardation (Δnd) satisfying Δnd(450 nm)/Δnd(550 nm)
公开/授权文献
- US20040125291A1 Optical film and liquid crystal display using the same 公开/授权日：2004-07-01
信息查询
IPC分类:
