公开(公告)号：US11740506B2

公开(公告)日：2023-08-29

申请号：US16902590

申请日：2020-06-16

Applicant: FUJIFILM Corporation

Inventor： Akiko Watano ,  Tatsuya Oba ,  Hirofumi Toyama ,  Takashi Yonemoto

IPC: H01L33/50 ,  G02F1/13357 ,  G02F1/1335

CPC classification number: G02F1/133603 ,  H01L33/504 ,  C09K2323/035 ,  G02F1/133507 ,  G02F1/133602 ,  G02F1/133605 ,  G02F1/133614

Abstract: A wavelength conversion member suppresses peeling at an edge at cutting; and is used with a backlight unit and a liquid crystal display device. The wavelength conversion member includes a first substrate, a wavelength conversion layer, and a second substrate, in which each of the first and second substrates includes a support, a barrier layer, and an organic layer, where each of the barrier layers contains at least aluminum and phosphorus, each of the organic layers is formed of a composition containing a polymer A having a glass transition temperature of 50° C. or lower and a polymer B having an acryloyl or methacryloyl group in a molecule thereof, and the wavelength conversion layer is a layer in which at least one selected from the group consisting of a quantum dot, a phosphor particle, and a phosphor coloring agent is dispersed in a matrix made of an acrylic resin.

公开(公告)号：US11131800B2

公开(公告)日：2021-09-28

申请号：US16925305

申请日：2020-07-09

Applicant: FUJIFILM CORPORATION

Inventor： Takashi Yonemoto ,  Hirofumi Toyama ,  Naoyoshi Yamada

IPC: F21V8/00 ,  G02F1/13357 ,  G02F1/1335

Abstract: The backlight unit includes: a light guide that includes an incidence surface and an emission surface facing each other; and a light source portion including a plurality of point light sources that are two-dimensionally arranged to face the incidence surface of the light guide, in which light emitted from the light source portion is incident into the incidence surface of the light guide and emitted from the emission surface, the backlight unit is driven by local dimming in which at least two point light sources among the plurality of point light sources are used as a minimum point lighting unit, the light guide includes a plurality of light advancing direction conversion portions and a plurality of light extraction portions, each of the light advancing direction conversion portions is provided at each of positions on the incidence surface facing the plurality of point light sources and changes an advancing direction of each of light components to a direction in which the light component is guided in the light guide, and each of the light extraction portions is provided per unit region corresponding to the minimum point lighting unit in a state where a density in a peripheral portion of the unit region is set to be higher than a density in a center portion of the unit region and emits the light guided in the light guide.

公开(公告)号：US10274782B2

公开(公告)日：2019-04-30

申请号：US15471577

申请日：2017-03-28

Applicant: FUJIFILM Corporation

Inventor： Takashi Yonemoto ,  Eijiro Iwase ,  Koichi Sato

IPC: G02F1/13357 ,  G02F1/1335 ,  B32B7/04 ,  B32B27/36 ,  F21V8/00 ,  B32B27/08 ,  B32B27/18

Abstract: Provided is a backlight unit, including: a light source allowing light having a light emission center wavelength of λ nm to exit; and a wavelength conversion member positioned on an optical path of the light exiting from the light source, in which the wavelength conversion member includes a wavelength conversion layer containing a fluorescent material which is excited by exciting light and emits fluorescent light, and a light scattering layer containing particles having a particle size of greater than or equal to 0.1 μm in a matrix, an average refractive index n1 of the wavelength conversion layer satisfies a relationship of n1

公开(公告)号：US10175528B2

公开(公告)日：2019-01-08

申请号：US15399298

申请日：2017-01-05

Applicant: FUJIFILM Corporation

Inventor： Katsufumi Ohmuro ,  Yukito Saitoh ,  Takashi Yonemoto

IPC: G02F1/1335 ,  G02B5/30

Abstract: An aspect of the present invention relates to a liquid crystal panel including a visible side polarizing plate, a liquid crystal cell, and a backlight side polarizing plate, in which the backlight side polarizing plate is a reflective polarizing plate of which a degree of polarization P550 nm with respect to light at a wavelength of 550 nm is greater than or equal to 99.90%, and the reflective polarizing plate and the liquid crystal cell are integrally laminated, a liquid crystal display device, and a reflective polarizing plate and a manufacturing method thereof.

公开(公告)号：US09753198B2

公开(公告)日：2017-09-05

申请号：US14837574

申请日：2015-08-27

Applicant: FUJIFILM Corporation

Inventor： Yukito Saitoh ,  Yujiro Yanai ,  Akiko Watano ,  Takashi Yonemoto

IPC: G02B5/26 ,  F21V9/04 ,  G02B5/22 ,  B82Y20/00

CPC classification number: G02B5/26 ,  B82Y20/00 ,  G02B5/223

Abstract: The light emitting screen of the present invention includes: a blue light emitting layer emitting blue light by being excited with first excitation light; a green light emitting layer which is disposed on the blue light emitting layer and emits green light by being excited with second excitation light; a red light emitting layer which is disposed on the green light emitting layer and emits red light by being excited with third excitation light; a first selective reflection layer which is disposed between the blue light emitting layer and the green light emitting layer; and a second selective reflection layer which is disposed between the green light emitting layer and the red light emitting layer, wherein the blue light emitting layer, the green light emitting layer, and the red light emitting layer contain quantum rods or quantum dots.

公开(公告)号：US09229263B2

公开(公告)日：2016-01-05

申请号：US14133001

申请日：2013-12-18

Applicant: FUJIFILM Corporation

Inventor： Megumi Sekiguchi ,  Shinichi Morishima ,  Takashi Yonemoto ,  Hiroshi Sato ,  Taketo Otani

IPC: G02F1/1335

CPC classification number: G02F1/133504

Abstract: A liquid crystal display device includes first and second polarizers with absorption axes orthogonal to each other; first and second substrates between the first and second polarizers and at least one of which has a transparent electrode; and a twisted-nematic liquid crystal cell disposed between the first and second substrates, wherein a light scattering film is provided at a viewing side of the first and second polarizers and includes a support member and a liquid crystal layer composed of a liquid crystal compound, wherein the pitch of the liquid crystal compound ranges between 0.35 μm and 3 μm and is oriented at 45° relative to a liquid-crystal direction of the liquid crystal display device, wherein the liquid crystal layer has a thickness between 0.17 μm and 10 μm, and wherein a weighted scattering area ratio of a goniophotometer scattering profile of the light scattering film satisfies the following expression. S 60 / ( S 0 ) 2 × 1000 > 40 S 0 = ∑ S 0 ⁡ ( θ ) × θ ∑ S 0 ⁡ ( θ ) S 60 = ∑ S 60 ⁡ ( θ ) × exp ⁡ ( - 0.2 × θ ) ∑ S 60 ⁡ ( θ )

Abstract translation: 液晶显示装置包括具有彼此正交的吸收轴的第一和第二偏振器; 第一和第二偏振器之间的第一和第二基板，并且其中至少一个具有透明电极; 以及设置在第一和第二基板之间的扭曲向列型液晶单元，其中在第一和第二偏振器的观察侧设置有光散射膜，并且包括支撑构件和由液晶化合物构成的液晶层， 其中液晶化合物的间距在0.35μm和3μm之间，相对于液晶显示装置的液晶方向取向为45°，其中液晶层的厚度为0.17μm至10μm， 并且其中光散射膜的测角光度计散射分布的加权散射面积比满足以下表达式。 S 60 /（S 0）2×1000> 40 S 0 =ΣS 0⁡（＆thetas;）×＆thetas; ΣS 0⁡（＆thetas;）S 60 =ΣS 60⁡（＆thetas）×exp⁡（ - 0.2×＆thetas;）ΣS 60⁡（＆Thetas;）