公开(公告)号：US12163642B2

公开(公告)日：2024-12-10

申请号：US18517560

申请日：2023-11-22

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Takeo Koito ,  Tae Kurokawa ,  Keiji Takizawa

IPC: G02F1/29 ,  F21V8/00 ,  F21V14/00

Abstract: A lighting device includes a light emitting module and an optical element including first and second liquid crystal cells. Each of the first and second liquid crystal cells includes first and second transparent electrodes extending in a first direction and third and fourth transparent electrodes extending in a second direction. The light emitting module includes a light source, a light guide plate including an end surface into which light emitted from the light source is incident and a first surface from which the light incident into the end surface is emitted, and a prism sheet disposed opposite to the first surface. The second substrate of the first liquid crystal cell and the first substrate of the second liquid crystal cell are adjacent to each other. The first surface includes a plurality of first grooves extending in a third direction intersecting the first direction and the second direction.

公开(公告)号：US12140306B2

公开(公告)日：2024-11-12

申请号：US18231297

申请日：2023-08-08

Applicant: Japan Display Inc.

Inventor： Tae Kurokawa ,  Takeo Koito ,  Kojiro Ikeda

IPC: F21V9/40 ,  G02F1/1343 ,  G02F1/1347

Abstract: An optical element includes a first liquid crystal cell and a second liquid crystal cell. The first liquid crystal cell and the second liquid crystal cell are stacked. Each of the first liquid crystal cell and the second liquid crystal cell includes a first substrate on which a first transparent electrode and a second transparent electrode are alternately and repeatedly arranged in a first direction, a second substrate on which a third transparent electrode and a fourth transparent electrode are alternately and repeatedly arranged in a second direction intersecting the first direction, and a liquid crystal layer between the first substrate and the second substrate. The second substrate of the first liquid crystal cell and the first substrate of the second liquid crystal cell are adjacent to each other.

公开(公告)号：US12044934B2

公开(公告)日：2024-07-23

申请号：US18506522

申请日：2023-11-10

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Takeo Koito

IPC: G02F1/1343 ,  G02F1/1347

CPC classification number: G02F1/134309 ,  G02F1/1347

Abstract: An optical element includes first to fourth liquid crystal cells. Each of the first to fourth liquid crystal cells includes a first substrate on which a first pair of comb-shaped transparent electrodes are arranged and a second substrate on which a second pair of comb-shaped transparent electrodes are arranged. An extending direction of the first pair of comb-shaped transparent electrodes is orthogonal to an extending direction of the second pair of comb-shaped transparent electrodes. Between two different liquid crystal cells of the first to fourth liquid crystal cells, one of the first pair of comb-shaped transparent electrodes of one liquid crystal cell and one of the second pair of comb-shaped transparent electrodes of the other liquid crystal cell are electrically connected to each other.

公开(公告)号：US11869394B2

公开(公告)日：2024-01-09

申请号：US18109041

申请日：2023-02-13

Applicant: Japan Display Inc.

Inventor： Kazunari Tomizawa ,  Takeo Koito

IPC: G09G3/00 ,  G09G3/36 ,  F21V8/00

CPC classification number: G09G3/001 ,  G02B6/0035 ,  G09G3/36 ,  G09G2300/0439 ,  G09G2320/0209 ,  G09G2320/068

Abstract: According to an aspect, a display device includes: a liquid crystal display panel provided with a plurality of pixels; and a light source provided with a plurality of light emission points. The ratio of a pitch of the pixels arranged in a predetermined direction to a pitch of the light emission points arranged in the predetermined direction is 1:4n or 1:6n, and n is a natural number.

公开(公告)号：US11852303B2

公开(公告)日：2023-12-26

申请号：US18136881

申请日：2023-04-20

Applicant: Japan Display Inc.

Inventor： Makoto Hasegawa ,  Takeo Koito ,  Nobuyuki Suzuki ,  Masafumi Okada

IPC: F21K9/233 ,  F21K9/61 ,  F21Y115/10 ,  F21V8/00 ,  F21V11/06 ,  F21V14/00 ,  F21V5/00

CPC classification number: F21K9/233 ,  F21K9/61 ,  F21V5/005 ,  F21V11/06 ,  F21V14/003 ,  G02B6/003 ,  G02B6/0053 ,  F21Y2115/10

Abstract: The purpose of the present invention is to realize a lighting device of small light distribution angle and less leakage light and further to realize a lighting device in which the light beam is easy to control. The following is an example of the structure to meet the above purpose. A lighting device including: a light guide; LEDs set at a side surface of the light guide; a prism sheet set on a major surface of the light guide, in which a first louver which extends in a first direction and, a second louver which extends in an orthogonal direction to the first direction are superposed on the prism sheet.

公开(公告)号：US11415827B2

公开(公告)日：2022-08-16

申请号：US17304772

申请日：2021-06-25

Applicant: Japan Display Inc.

Inventor： Takeo Koito

IPC: G02F1/1333 ,  G01S17/04 ,  G02F1/1343 ,  F21V8/00 ,  G02F1/1335 ,  H04N5/225 ,  G02F1/1339

Abstract: According to one embodiment, an electronic apparatus includes a liquid crystal panel including a liquid crystal layer, a first transparent electrode, an insulating film covering the first transparent electrode, a second transparent electrode disposed between the insulating film and the liquid crystal layer, and a modulation area in which the first transparent electrode and the second transparent are arranged alternately, a projection element overlapping the liquid crystal panel, and projecting linearly polarized infrared light toward the modulation area, and a detection element overlapping the liquid crystal panel, and detecting infrared light via the liquid crystal panel.

公开(公告)号：US11269449B2

公开(公告)日：2022-03-08

申请号：US17072734

申请日：2020-10-16

Applicant: Japan Display Inc.

Inventor： Koji Ishizaki ,  Hayato Kurasawa ,  Takeo Koito

IPC: G06F3/01 ,  G06F3/041 ,  G06F3/044 ,  G06F3/047

Abstract: A touch panel is disclosed herein. In an embodiment, the touch panel includes a substrate with first and second surfaces, a drive electrode facing the first surface, a plurality of touch detection electrodes facing the second surface, and a dummy electrode between adjacent touch detection electrodes. Each touch detection electrode includes a first conductive thin wire extending parallel to the first and second surfaces. The dummy electrode includes a second conductive thin wire extending along the first conductive thin wire. The first conductive thin wire includes a first bent portion and a second bent portion alternately arranged with the first conductive thin wire having a zigzag pattern. The second conductive thin wire includes a third bent portion and a slit that are alternately arranged. The third bent portion is arranged on a virtual straight line formed by virtually connecting the first bent portions of one first conductive thin wire.

公开(公告)号：US10386671B2

公开(公告)日：2019-08-20

申请号：US15873025

申请日：2018-01-17

Applicant: Japan Display Inc.

Inventor： Takeo Koito

IPC: G02F1/1335 ,  G02F1/1343 ,  G02F1/13 ,  G02B27/22 ,  G02F1/29

Abstract: According to one embodiment, a display device includes a display panel and an illumination device. The illumination device includes a light source unit, at least one light-shielding body which blocks part of the light emitted from the light source unit, at least one lens which refracts the light emitted from the light source unit, and an illumination controller. The illumination controller controls a first mode in which the light-shielding body and the lens are arranged at a first position, and a second mode in which at least one of the light-shielding body and the lens is arranged at a second position, which is different from the first position.

公开(公告)号：US10302986B2

公开(公告)日：2019-05-28

申请号：US15659859

申请日：2017-07-26

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Yudai Numata

IPC: G02F1/00 ,  G02F1/1335 ,  G02F1/03 ,  G02F1/13363 ,  G02F1/136

Abstract: According to one embodiment, a display device includes an illumination unit, a polarizing element which transmits a specific polarized component of light entering from the illumination unit, a display panel which transmits the polarized light entering from the polarizing element while maintaining or converting a polarized state, an optical element comprising a transmission axis which transmits first linearly polarized light, which transmits or reflects the light entering from the display panel and a reflective element which retro-reflects the light reflected by the optical element, and the display panel and the reflective element face one surface of the optical element.

公开(公告)号：US10222528B2

公开(公告)日：2019-03-05

申请号：US15440751

申请日：2017-02-23

Applicant: Japan Display Inc.

Inventor： Yudai Numata ,  Takeo Koito

IPC: G02B5/30 ,  G02B5/08 ,  G02B5/124

Abstract: According to one embodiment, a display device includes an optical element urging incident light to be transmitted or reflected, a first reflective element includes a first retroreflective surface in an uneven state on which the light reflected on the optical element is retroreflected, and a first specular reflection surface on which the light reflected on the optical element is specularly reflected, and a second reflective element includes a second retroreflective surface in an uneven state on which the light reflected on the first specular reflection surface is retroreflected.