公开(公告)号：US10890804B2

公开(公告)日：2021-01-12

申请号：US16743530

申请日：2020-01-15

Applicant: Japan Display Inc.

Inventor： Manabu Mizuno ,  Kentaro Okuyama ,  Hiroshi Inamura ,  Hiroki Sugiyama

IPC: G02F1/13357 ,  F21V8/00 ,  G02F1/1334 ,  G02F1/137 ,  G02F1/1339 ,  G02F1/1341

Abstract: According to an aspect, a display apparatus includes: a first light-transmissive substrate; a second light-transmissive substrate arranged to face the first light-transmissive substrate; a liquid crystal layer including polymer dispersed liquid crystals sealed between the first light-transmissive substrate and the second light-transmissive substrate; at least one light-emitting device arranged to face at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate; and at least one reflector arranged on at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate, the side surface of the first or second light-transmissive substrate being on an opposite side of the side surface of the first or second light-transmissive substrate to which the at least one light-emitting device faces, and configured to reflect light at the side surface on the opposite side.

公开(公告)号：US10684510B2

公开(公告)日：2020-06-16

申请号：US16573212

申请日：2019-09-17

Applicant: Japan Display Inc.

Inventor： Hiroki Sugiyama ,  Kentaro Okuyama ,  Hideki Kaneko ,  Hiroshi Inamura ,  Manabu Mizuno

IPC: G02F1/13357 ,  G02F1/1334 ,  G02F1/1345 ,  G02B6/00 ,  F21V8/00 ,  G02F1/1335

Abstract: A display device according to one aspect of the present invention includes a first substrate including a pixel portion and a terminal portion, a second substrate arranged to face the pixel portion, a first light source device arranged in the terminal portion, and irradiating a first end surface of the second substrate with first light, a liquid crystal layer arranged between the first substrate and the second substrate, and a semiconductor element arranged on a side opposite to a side of the pixel portion across the first light source device, and electrically coupled with the terminal portion, wherein the first light is propagated while reflected between the first substrate and the second substrate, and the liquid crystal layer modulates the propagated first light.

公开(公告)号：US10571746B2

公开(公告)日：2020-02-25

申请号：US16414433

申请日：2019-05-16

Applicant: Japan Display Inc.

Inventor： Akira Sakaigawa ,  Kentaro Okuyama

IPC: G09G5/02 ,  G02F1/1335 ,  G09G3/34 ,  G09G3/36 ,  G02F1/13 ,  G02F1/1334

Abstract: A display device including a first substrate including a plurality of reflection electrodes on a front side of the first substrate, the plurality of reflection electrodes including a first reflection electrode and a second reflection electrode which is farther away from a light source than the first reflection electrode; a second substrate including a transparent electrode on a back side of the second substrate; a light modulation layer which includes a polymer dispersed liquid crystal layer containing a liquid crystalline monomer and liquid crystal molecules dispersed in the liquid crystalline monomer, the light modulation layer being disposed between the plurality of reflection electrodes and the transparent electrode; a drive section driving the plurality of reflection electrodes and the transparent electrode, wherein an application time of a first drive voltage applied between the transparent electrode and the first reflection electrode is shorter than an application time of a second drive voltage applied between the transparent electrode and the second reflection electrode.

公开(公告)号：US10466538B2

公开(公告)日：2019-11-05

申请号：US15454161

申请日：2017-03-09

Applicant: Japan Display Inc.

Inventor： Hiroki Sugiyama ,  Kentaro Okuyama ,  Hideki Kaneko ,  Hiroshi Inamura ,  Manabu Mizuno

IPC: G02F1/1335 ,  G02F1/1334 ,  G02F1/1345 ,  G02B6/00 ,  F21V8/00

Abstract: A display device according to one aspect of the present invention includes a first substrate including a pixel portion and a terminal portion, a second substrate arranged to face the pixel portion, a first light source device arranged in the terminal portion, and irradiating a first end surface of the second substrate with first light, a liquid crystal layer arranged between the first substrate and the second substrate, and a semiconductor element arranged on a side opposite to a side of the pixel portion across the first light source device, and electrically coupled with the terminal portion, wherein the first light is propagated while reflected between the first substrate and the second substrate, and the liquid crystal layer modulates the propagated first light.

公开(公告)号：US10338441B2

公开(公告)日：2019-07-02

申请号：US15474095

申请日：2017-03-30

Applicant: Japan Display Inc.

Inventor： Kentaro Okuyama ,  Tae Kurokawa

IPC: G02F1/137 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/139

Abstract: According to one embodiment, a display device includes a first polarizing element, a second polarizing element, and a light-modulating layer located between the first polarizing element and the second polarizing element, each of the first polarizing element and the second polarizing element includes a guest-host liquid crystal layer and a control electrode in an active area including at least one sub-area, the guest-host liquid crystal layer including dye having anisotropy in absorptive power for visible light, the control electrode controlling an alignment direction of the dye in the sub-area.

公开(公告)号：US10303000B2

公开(公告)日：2019-05-28

申请号：US15958799

申请日：2018-04-20

Applicant: Japan Display Inc.

Inventor： Kentaro Okuyama

IPC: G02F1/1335 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/137 ,  G02F1/1334

Abstract: According to one embodiment, a display device includes a display panel including a display surface, which displays an image by selectively reflecting light entering the display surface, and an illuminating device including an optical modulator provided on a display surface side of the display panel and including a plurality of portions in a major surface thereof and a light source provided on a side surface of the optical modulator, and the illuminating device illuminates the display panel at a predetermined brightness specific for each respective portion with the light entering the optical modulator from the light source.

公开(公告)号：US10268062B2

公开(公告)日：2019-04-23

申请号：US14883834

申请日：2015-10-15

Applicant: Japan Display Inc.

Inventor： Kentaro Okuyama ,  Akira Sakaigawa

IPC: G02F1/1334 ,  G02F1/1335 ,  G02F1/13363

Abstract: A display device includes a light modulation layer and a light source. The light modulation layer is disposed between a pair of transparent substrates, has determined refractive index anisotropy, and includes plural light modulation elements which differ in responsiveness to an electric field generated by electrodes formed on a transparent substrate. The light source emits light of a determined color incident on the light modulation layer from a side of the light modulation layer. When the electric field is not generated, the light modulation layer transmits the incident light emitted from the light source. When the electric field is generated, the light modulation layer scatters the incident light and emits scattered light to a transparent substrate.

公开(公告)号：US10120238B2

公开(公告)日：2018-11-06

申请号：US15651317

申请日：2017-07-17

Applicant: Japan Display Inc.

Inventor： Tatsuya Yata ,  Kentaro Okuyama

IPC: G02F1/1334 ,  G02F1/1335

Abstract: According to one embodiment, a display device comprises first and second substrate having light transmissivity and opposing each other, a light-modulating layer arranged between the first substrate and the second substrate, a light source unit which illuminates the light-modulating layer from an outer side of a position which opposes a display area, along a normal direction, first to third color filters of different colors arranged on the first substrate, and first to third electrodes which oppose the first to third color filters, respectively, the light-modulating layer being able to change light dispersibility of each of regions which oppose the first to third color filters according to the electric field produced by each respective one of the first to third electrodes.

公开(公告)号：US20180074356A1

公开(公告)日：2018-03-15

申请号：US15700823

申请日：2017-09-11

Applicant: Japan Display Inc.

Inventor： Kentaro Okuyama

IPC: G02F1/133 ,  G02F1/167 ,  G02F1/163 ,  G02F1/137

CPC classification number: G02F1/13318 ,  G02F1/1334 ,  G02F1/13725 ,  G02F1/157 ,  G02F1/163 ,  G02F1/167 ,  G02F2201/44 ,  H01L27/3232 ,  H01L27/3269 ,  H01L33/02 ,  H01L51/5012

Abstract: According to one embodiment, a display device includes a display panel including a first outer surface and a second outer surface which is on a side opposite to the first outer surface, a light-modulating element opposed to the first outer surface, a first optical sensor which measures brightness on a first outer surface side of the display panel, and a controller which controls a transmittance of the light-modulating element on the basis of a measurement result obtained from the first optical sensor.

公开(公告)号：US12099270B2

公开(公告)日：2024-09-24

申请号：US18538101

申请日：2023-12-13

Applicant: Japan Display Inc.

Inventor： Kentaro Okuyama ,  Akira Sakaigawa

IPC: G02F1/1334 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/13363

CPC classification number: G02F1/1334 ,  G02F1/133615 ,  G02F1/133622 ,  G02F1/133638

Abstract: A display device is provided and includes display panel including first substrate, lower electrode on first substrate, lower alignment layer with first alignment direction on lower electrode, second substrate, upper electrode on second substrate, upper alignment layer with first alignment direction on upper electrode, and liquid crystalline polymers with striped structure and liquid crystal molecules which are aligned in first alignment direction, and which are disposed between first and second substrates; light source unit disposed at side of display panel and configured to emit incident light which is not polarized; and light guided structure disposed between side of display panel and light source unit, wherein light source unit is disposed in parallel to first alignment direction and light which is emitted from display panel is polarized in first alignment direction.