Invention Grant
- Patent Title: Anisotropic optical film
-
Application No.: US15129219Application Date: 2015-03-17
-
Publication No.: US09989678B2Publication Date: 2018-06-05
- Inventor: Tsubasa Sakano , Masahide Sugiyama
- Applicant: Tomoegawa Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: Tomoegawa Co., Ltd.
- Current Assignee: Tomoegawa Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Norris McLaughlin & Marcus, P.A.
- Priority: JP2014-069771 20140328
- International Application: PCT/JP2015/057865 WO 20150317
- International Announcement: WO2015/146708 WO 20151001
- Main IPC: G02B5/02
- IPC: G02B5/02 ; G02F1/1335 ; B05D7/04 ; B29D11/00 ; B05D5/06 ; B05D3/06 ; B29K667/00 ; B29K33/00

Abstract:
In an anisotropic optical film including two or more anisotropic light diffusion layers where a linear transmittance varies depending on an incident light angle, each of the anisotropic light diffusion layers has a matrix region and a plurality of pillar regions that differ in refractive index from the matrix region, at least two types of anisotropic light diffusion layers (a) and (b) that differ in aspect ratio between a short diameter and a long diameter at a cross section perpendicular to an orientation direction of the pillar regions are used as the anisotropic light diffusion layers, the aspect ratio between the short diameter and the long diameter in the pillar regions is made less than 2 in the anisotropic light diffusion layer (a), and the aspect ratio between the short diameter and the long diameter in the pillar regions is made 2 or more and 20 or less in the anisotropic light diffusion layer (b).
Public/Granted literature
- US20170192137A1 ANISOTROPIC OPTICAL FILM Public/Granted day:2017-07-06
Information query