公开(公告)号：US10578918B2

公开(公告)日：2020-03-03

申请号：US16013473

申请日：2018-06-20

Applicant: FUJIFILM Corporation

Inventor： Yukito Saito ,  Kotaro Yasuda

IPC: G02F1/1335 ,  G02B5/20 ,  G02B5/30

Abstract: A direct backlight unit includes: a rear-side reflective plate; a light source which is disposed on a reflection surface side of the rear-side reflective plate; a perforated reflective plate which is disposed to face the rear-side reflective plate through the light source and has a plurality of fine holes, which penetrate from a light source-side surface to an emission-side surface facing the light source-side surface and transmit light, and in which both the light source-side surface and the emission-side surface are reflection surfaces and a depolarization degree of the emission-side surface is 60% or less; and a circular polarization reflection film which is disposed on the emission-side surface side of the perforated reflective plate.

公开(公告)号：US10585222B2

公开(公告)日：2020-03-10

申请号：US16191450

申请日：2018-11-15

Applicant: FUJIFILM CORPORATION

Inventor： Yukito Saito ,  Yujiro Yanai

IPC: G02F1/1335 ,  G02B5/30 ,  G02F1/13363 ,  H01L27/32 ,  G02F1/13 ,  H01L51/52 ,  B29D11/00

Abstract: A patterned phase difference film has an optically anisotropic layer alternately having a first phase difference region and a second phase difference region, in which the first phase difference region and the second phase difference region contain rod-like liquid crystals or discotic liquid crystals in the form of a hybrid alignment with mutually opposite rising directions of tilt angles, and has a hybrid alignment in which directions of in-plane slow axes and absolute values of in-plane phase differences of the first phase difference region and the second phase difference region are equal in a range of 54 to 74 nm, and in each of the first phase difference region and the second phase difference region, one of an absolute value of a phase difference at a polar angle of 40° and an absolute value of a phase difference at a polar angle of −40° is 135 to 353 nm and the other is 8 to 28 nm.

公开(公告)号：US10605976B2

公开(公告)日：2020-03-31

申请号：US16013482

申请日：2018-06-20

Applicant: FUJIFILM Corporation

Inventor： Yukito Saito ,  Kotaro Yasuda

IPC: F21V8/00 ,  G02B5/30 ,  G02B5/20

Abstract: An edge light type backlight unit includes: a light source; a light guide plate which has an end surface, on which light emitted from the light source is incident, and propagates the light incident from the end surface; a rear-side reflective plate which is disposed on a surface side of the light guide plate; a perforated reflective plate which is disposed on a surface side of the light guide plate and has a plurality of fine holes, which penetrate from a surface on the light guide plate side to an emission-side surface facing the light guide plate-side surface and transmit light, and in which both the surface and the surface are reflection surfaces and a depolarization degree of the surface is 60% or less; and a circular polarization reflection film which is disposed on the surface side of the perforated reflective plate.

公开(公告)号：US10955601B2

公开(公告)日：2021-03-23

申请号：US16106677

申请日：2018-08-21

Applicant: FUJIFILM Corporation

Inventor： Kunihiro Atsumi ,  Yukito Saito ,  Shinichi Morishima ,  Wataru Hoshino

IPC: G02B5/30 ,  B32B7/02 ,  G09F9/00 ,  C09K19/32 ,  C09K19/02 ,  C09K19/34 ,  C09K19/56 ,  C09K19/38 ,  G02F1/13363 ,  C09K19/54 ,  C09K19/04 ,  C09K19/20 ,  H01L51/52 ,  C09K19/30 ,  H01L51/00 ,  H01L51/56

Abstract: An optical film includes a liquid crystal layer derived from a smectic phase, wherein an Nz factor of the liquid crystal layer is from 0.2 to 0.8. A display device that includes the optical film, and a method of producing an optical film is also provided.