Title:
位相差フィルム及びその製造方法
Document Type and Number:
Japanese Patent JP7373695
Kind Code:
B2
Abstract:
The phase difference film has a first resin layer that contains a negative intrinsic birefringent resin A and that exhibits Ro(450) > Ro(550) > Ro(650) where Ro(450) is the in-plane phase difference at an angle of incidence of 0° for light with a wavelength of 450 nm, Ro(550) is the in-plane phase difference at an angle of incidence of 0° for light with a wavelength of 550 nm, and Ro(650) is the in-plane phase difference at an angle of incidence of 0° for light with a wavelength of 650 nm, and has a second resin layer that contains a positive intrinsic birefringent resin B and that exhibits Ro(450) > Ro(550) > Ro(650) where Ro(450) is the in-plane phase difference at an angle of incidence of 0° for light with a wavelength of 450 nm, Ro(550) is the in-plane phase difference at an angle of incidence of 0° for light with a wavelength of 550 nm, and Ro(650) is the in-plane phase difference at an angle of incidence of 0° for light with a wavelength of 650 nm. The phase difference film has an Nz factor of -1.0 to 1.0 and exhibits Ro(450) < Ro(550) < Ro(650) where Ro(450) is the in-plane phase difference at an angle of incidence of 0° for light with a wavelength of 450 nm, Ro(550) is the in-plane phase difference at an angle of incidence of 0° for light with a wavelength of 550 nm, and Ro(650) is the in-plane phase difference at an angle of incidence of 0° for light with a wavelength of 650 nm.
Inventors:
Shogo Suga
Yoshiya Daejeon
Yasuhiro Suda
Yoshiya Daejeon
Yasuhiro Suda
Application Number:
JP2023517398A
Publication Date:
November 02, 2023
Filing Date:
November 18, 2022
Export Citation:
Assignee:
Osaka Gas Chemicals Co., Ltd.
International Classes:
G02B5/30; C08G63/187; G09F9/00; H10K50/86; H10K59/10
Domestic Patent References:
| JP2004325971A | ||||
| JP2016014794A |
Foreign References:
| WO2021140927A1 |
Attorney, Agent or Firm:
Toru Kamada
Toyotaka Abe
Toyotaka Abe