公开(公告)号：US10928671B2

公开(公告)日：2021-02-23

申请号：US15803104

申请日：2017-11-03

Applicant: Japan Display Inc.

Inventor： Tatsuya Yata ,  Shigenori Aoki

IPC: G02F1/13357 ,  F21V8/00

Abstract: According to one embodiment, a display device includes a display panel including a first sub-display area and a second sub-display area and an illumination device which illuminates the display panel, the illumination device including a first light guide opposing the first sub-display area, a second light guide opposing the second sub-display area, and a light diffusion layer disposed between the display panel and each of the first light guide and the second light guide, the light diffusion layer exhibiting a first diffusion degree in a first direction along which the first light guide and the second light guide are arranged, which is higher than a second diffusion degree in a second direction crossing the first direction.

公开(公告)号：US20200152139A1

公开(公告)日：2020-05-14

申请号：US16738622

申请日：2020-01-09

Applicant: Japan Display Inc.

Inventor： Shigenori Aoki ,  Tatsuya Yata ,  Tsutomu Harada

IPC: G09G3/34 ,  G02F1/13357 ,  G09G3/36

Abstract: According to one embodiment, a display device includes a display panel including a first sub display area and a second sub display area, and an illumination device, wherein the illumination device includes a first light source opposed to the first sub display area, a second light source opposed to the second sub display area, and a partition positioned between the first and second light sources and the display panel, and the partition includes a first side surface surrounding the first light source, a second side surface surrounding the second light source, and a connector which connects the first side surface and the second side surface, and the connector is formed of curved surfaces, or two or more flat surfaces, or a combination of curved surfaces and flat surfaces.

公开(公告)号：US10345508B2

公开(公告)日：2019-07-09

申请号：US15879985

申请日：2018-01-25

Applicant: Japan Display Inc.

Inventor： Shigenori Aoki ,  Susumu Kimura ,  Tsutomu Harada ,  Naoyuki Takasaki

IPC: F21V8/00 ,  G02F1/1335

Abstract: According to one embodiment, an illumination device includes a light source, clad, and a plurality of cores. The clad includes a first edge at a light source side, a second edge opposite to the first edge, and a plurality of grooves formed by a plurality of partitions extending in parallel to each other from the first edge to the second edge. The cores are accommodated in the grooves, and each core includes an incident surface on which light from the light source is incident and an exit surface exposed from the groove to emit the light incident on the incident surface.

公开(公告)号：US10032418B2

公开(公告)日：2018-07-24

申请号：US15583146

申请日：2017-05-01

Applicant: Japan Display Inc.

Inventor： Kazuhiko Sako ,  Naoyuki Takasaki ,  Tsutomu Harada ,  Tatsuya Yata ,  Shigenori Aoki

IPC: G06F3/038 ,  G09G3/34

Abstract: According to an aspect, a display apparatus includes: a plurality of light sources; a display device that includes a display area provided with n1 pixels and that is irradiated with light from the light sources; a light source controller controlling an operation of the light sources; and a display controller controlling an output gradation value of part or all of the pixels. The display area includes a plurality of partial areas, the partial areas corresponding to the light sources on a one-to-one basis. The light source controller determines the amount of light emitted from each light source corresponding to a corresponding one of the partial areas based on luminance of light required for the corresponding partial area. The display controller performs first correction and second correction when the amounts of light emitted from two light sources corresponding to two adjacent partial areas are different.

公开(公告)号：US20170337885A1

公开(公告)日：2017-11-23

申请号：US15598552

申请日：2017-05-18

Applicant: Japan Display Inc.

Inventor： Shigenori Aoki ,  Tatsuya Yata ,  Tsutomu Harada

IPC: G09G3/34 ,  G02F1/1335 ,  G09G3/36

CPC classification number: G09G3/3426 ,  G02F1/133603 ,  G02F1/133605 ,  G02F1/133606 ,  G02F1/133611 ,  G02F2201/08 ,  G09G3/3611 ,  G09G2300/0452 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0646

Abstract: According to one embodiment, a display device includes a display panel including a first sub display area and a second sub display area, and an illumination device, wherein the illumination device includes a first light source opposed to the first sub display area, a second light source opposed to the second sub display area, and a partition positioned between the first and second light sources and the display panel, and the partition includes a first side surface surrounding the first light source, a second side surface surrounding the second light source, and a connector which connects the first side surface and the second side surface, and the connector is formed of curved surfaces, or two or more flat surfaces, or a combination of curved surfaces and flat surfaces.

公开(公告)号：US20170316746A1

公开(公告)日：2017-11-02

申请号：US15496447

申请日：2017-04-25

Applicant: Japan Display Inc.

Inventor： Kazuhiko Sako ,  Naoyuki Takasaki ,  Tsutomu Harada ,  Tatsuya Yata ,  Shigenori Aoki

IPC: G09G3/34 ,  G02B27/01

CPC classification number: G09G3/3426 ,  G02B27/0101 ,  G02B2027/0118 ,  G09G2320/0646 ,  G09G2360/16

Abstract: According to an aspect, a display apparatus includes: a plurality of light sources; a display device irradiated with light from the light sources; and a controller. The display area includes a plurality of partial areas corresponding to the light sources on a one-to-one basis. Each of the partial areas includes a first area and a second area, the first area being irradiated with light from a first light source that corresponds thereto, and the second area being irradiated with light from the first light source and a second light source adjacent to the first light source. The controller controls an operation of the first light source based on whether the first area requires the light from the first light source and whether the second area obtains light required for display output by receiving the light from the second light source.

公开(公告)号：US11605357B2

公开(公告)日：2023-03-14

申请号：US17861924

申请日：2022-07-11

Applicant: Japan Display Inc.

Inventor： Shigenori Aoki ,  Tatsuya Yata ,  Tsutomu Harada

IPC: G09G3/34 ,  G02F1/13357 ,  G09G3/36

Abstract: According to one embodiment, a display device includes a display panel including a first sub display area and a second sub display area, and an illumination device, wherein the illumination device includes a first light source opposed to the first sub display area, a second light source opposed to the second sub display area, and a partition positioned between the first and second light sources and the display panel, and the partition includes a first side surface surrounding the first light source, a second side surface surrounding the second light source, and a connector which connects the first side surface and the second side surface, and the connector is formed of curved surfaces, or two or more flat surfaces, or a combination of curved surfaces and flat surfaces.

公开(公告)号：US20220343868A1

公开(公告)日：2022-10-27

申请号：US17861924

申请日：2022-07-11

Applicant: Japan Display Inc.

Inventor： Shigenori Aoki ,  Tatsuya Yata ,  Tsutomu Harada

IPC: G09G3/34 ,  G02F1/13357 ,  G09G3/36

Abstract: According to one embodiment, a display device includes a display panel including a first sub display area and a second sub display area, and an illumination device, wherein the illumination device includes a first light source opposed to the first sub display area, a second light source opposed to the second sub display area, and a partition positioned between the first and second light sources and the display panel, and the partition includes a first side surface surrounding the first light source, a second side surface surrounding the second light source, and a connector which connects the first side surface and the second side surface, and the connector is formed of curved surfaces, or two or more flat surfaces, or a combination of curved surfaces and flat surfaces.

公开(公告)号：US11294173B2

公开(公告)日：2022-04-05

申请号：US16201330

申请日：2018-11-27

Applicant: Japan Display Inc.

Inventor： Tsutomu Harada ,  Shigenori Aoki ,  Koji Yoshida ,  Masayuki Mifune ,  Kazunori Yamaguchi

IPC: G02B27/01 ,  G02F1/13357 ,  G02F1/1335 ,  F21V8/00 ,  G02F1/1333

Abstract: According to one embodiment, a display device includes a display panel, a backlight device including a plurality of light sources, to irradiate light to the display panel, and an optical element provided on an emission side of the display panel and inclined with respect to a direction perpendicular to an optical axis of the display panel.

公开(公告)号：US11249343B2

公开(公告)日：2022-02-15

申请号：US17181148

申请日：2021-02-22

Applicant: Japan Display Inc.

Inventor： Tatsuya Yata ,  Shigenori Aoki

IPC: G02F1/13357 ,  F21V8/00

Abstract: A display device is provided and includes display panel; and illumination device opposed to display panel, illumination device including first light guide, second light guide arranged adjacent to first light guide in first direction, third light guide arranged adjacent to first light guide in second direction intersecting first direction, and fourth light guide arranged adjacent to second light guide in the second direction, light diffusion layer disposed between display panel and each of the first, second, third, and fourth light guides, wherein light diffusion layer exhibit first diffusion degree in first direction and second diffusion degree in second direction, second diffusion degree is different from the first diffusion degree, illumination device includes first ridge between first and second light guides and second ridge between first and third light guides, and under light diffusion layer, first brightness in first ridge is different from second brightness in second ridge.