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：US11531396B2

公开(公告)日：2022-12-20

申请号：US16992305

申请日：2020-08-13

Applicant: Japan Display Inc.

Inventor： Shuji Hayashi ,  Keiji Takizawa

IPC: G06F3/01 ,  G06F3/03 ,  G02B30/25 ,  G02B30/56 ,  G02B5/12 ,  G06F3/042 ,  G06F3/16 ,  H04R1/02 ,  G02F1/1333

Abstract: According to one embodiment, a display device includes a display which emits display light, a retroreflective element which retroreflects incident light, an optical element including a lower surface opposing the display and the retroreflective element and an upper surface on an opposite side to the lower surface, which reflects part of the display light toward the retroreflective element and transmits reflection light retroreflected by the retroreflective element and a first blower mechanism which blows air to a side of the upper surface.

公开(公告)号：US20200371595A1

公开(公告)日：2020-11-26

申请号：US16992305

申请日：2020-08-13

Applicant: Japan Display Inc.

Inventor： Shuji HAYASHI ,  Keiji Takizawa

IPC: G06F3/01 ,  G06F3/03 ,  G02B30/25 ,  G02B30/56 ,  G02B5/12 ,  G06F3/042 ,  G06F3/16 ,  H04R1/02

Abstract: According to one embodiment, a display device includes a display which emits display light, a retroreflective element which retroreflects incident light, an optical element including a lower surface opposing the display and the retroreflective element and an upper surface on an opposite side to the lower surface, which reflects part of the display light toward the retroreflective element and transmits reflection light retroreflected by the retroreflective element and a first blower mechanism which blows air to a side of the upper surface.

公开(公告)号：US10061168B2

公开(公告)日：2018-08-28

申请号：US15703306

申请日：2017-09-13

Applicant: Japan Display Inc.

Inventor： Toshiharu Matsushima ,  Keiji Takizawa ,  Toshinori Uehara

IPC: G02F1/1343 ,  G02F1/1335

CPC classification number: G02F1/134363 ,  G02F1/133514 ,  G02F2001/134345

Abstract: According to an aspect, a liquid crystal display device includes: a first substrate; a second substrate; a liquid crystal layer between the first and second substrates; pixels each including sub-pixels corresponding to different color areas; a first electrode in each sub-pixel; and a second electrode facing the first electrode. The first electrode includes an electrode base portion extending in a first direction; and a plurality of comb tooth portions extending in a second direction from the electrode base portion. A slit pitch of a sub-pixel in one color area and a slit pitch of a sub-pixel in the other color area of at least two color areas out of different color areas are different in size, each slit pitch corresponding to a gap between the comb tooth portions adjacent to each other.

公开(公告)号：US09785021B2

公开(公告)日：2017-10-10

申请号：US14754185

申请日：2015-06-29

Applicant: Japan Display Inc.

Inventor： Toshiharu Matsushima ,  Keiji Takizawa ,  Toshinori Uehara

IPC: G02F1/1343 ,  G02F1/1335

CPC classification number: G02F1/134363 ,  G02F1/133514 ,  G02F2001/134345

Abstract: According to an aspect, a liquid crystal display device includes: a first substrate; a second substrate; a liquid crystal layer between the first and second substrates; pixels each including sub-pixels corresponding to different color areas; a first electrode in each sub-pixel; and a second electrode facing the first electrode. The first electrode includes an electrode base portion extending in a first direction; and a plurality of comb tooth portions extending in a second direction from the electrode base portion. A slit pitch of a sub-pixel in one color area and a slit pitch of a sub-pixel in the other color area of at least two color areas out of different color areas are different in size, each slit pitch corresponding to a gap between the comb tooth portions adjacent to each other.

公开(公告)号：US10782783B2

公开(公告)日：2020-09-22

申请号：US15798582

申请日：2017-10-31

Applicant: Japan Display Inc.

Inventor： Shuji Hayashi ,  Keiji Takizawa

IPC: G06F3/01 ,  G06F3/03 ,  G02B30/25 ,  G02B30/56 ,  G02B5/12 ,  G06F3/042 ,  G06F3/16 ,  H04R1/02 ,  G02F1/1333

Abstract: According to one embodiment, a display device includes a display which emits display light, a retroreflective element which retroreflects incident light, an optical element including a lower surface opposing the display and the retroreflective element and an upper surface on an opposite side to the lower surface, which reflects part of the display light toward the retroreflective element and transmits reflection light retroreflected by the retroreflective element and a first blower mechanism which blows air to a side of the upper surface.