Invention Grant
- Patent Title: Optical film, optical compensation film, polarizing plate and liquid crystal display
- Patent Title (中): 光学膜，光学补偿膜，偏光板和液晶显示器
-
Application No.: US13609834Application Date: 2012-09-11
-
Publication No.: US08823909B2Publication Date: 2014-09-02
- Inventor: Hajime Nakayama , Hirofumi Toyama , Yuta Takahashi
- Applicant: Hajime Nakayama , Hirofumi Toyama , Yuta Takahashi
- Applicant Address: JP Minato-ku, Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Minato-ku, Tokyo
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: JP2005-262304 20050909; JP2006-63026 20060308
- Main IPC: G02F1/1335
- IPC: G02F1/1335 ; C09K19/00
Abstract:
An optical film is provided and has retardations satisfying relations (1) to (3): 0≦Re(550)≦10; (1) −25≦Rth(550)≦25; and (2) |I|+|II|+|III|+|IV|>0.5 (nm), (3) with definitions: I=Re(450)−Re(550); II=Re(650)−Re(550); III=Rth(450)−Rth(550); and IV=Rth(650)−Rth(550), wherein Re(450), Re(550) and Re(650) are in-plane retardations measured with lights of wavelength of 450, 550 and 650 nm, respectively; and Rth(450), Rth(550) and Rth(650) are retardations in a thickness direction of the optical film, which are measured with lights of wavelength of 450, 550 and 650 nm, respectively.
Public/Granted literature
- US20130003000A1 OPTICAL FILM, OPTICAL COMPENSATION FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY Public/Granted day:2013-01-03
Information query
IPC分类:
