公开(公告)号：US20250015508A1

公开(公告)日：2025-01-09

申请号：US18893986

申请日：2024-09-24

Applicant: Japan Display Inc.

Inventor： Daiichi SUZUKI ,  Takanori TSUNASHIMA ,  Masayuki IKARI ,  Shinichiro OKA ,  Mitsutaka OKITA ,  Kazuki MATSUNAGA

IPC: H01Q15/14

Abstract: A reflect array includes a plurality of patch electrodes arranged spaced apart and interconnected to an incident surface of a radio wave, a plurality of control electrodes arranged spaced apart to correspond to the plurality of patch electrodes and disposed on a rear side of the plurality of patch electrodes, a liquid crystal layer between the plurality of patch electrodes and the plurality of control electrodes, and an auxiliary electrode disposed to overlap a separated region of the plurality of control electrodes.

公开(公告)号：US20250004322A1

公开(公告)日：2025-01-02

申请号：US18885794

申请日：2024-09-16

Applicant: Japan Display Inc.

Inventor： Kazuki MATSUNAGA ,  Shinichiro OKA ,  Mitsutaka OKITA ,  Daiichi SUZUKI

IPC: G02F1/1335 ,  G02F1/1343 ,  G02F1/1362

Abstract: A reflecting device in an embodiment according to the present invention includes common electrodes arranged in a matrix at a distance in a first direction and a second direction intersecting the first direction, bias electrodes arranged overlapping the common electrodes in a planar view, a liquid crystal layer between the common electrodes and the bias electrodes, and common wirings connecting adjacent common electrodes among the common electrodes. Each of the common wirings has a length of half an effective wavelength λg when a radio wave of a specific wavelength λ propagates through the liquid crystal layer.

公开(公告)号：US20220057664A1

公开(公告)日：2022-02-24

申请号：US17453224

申请日：2021-11-02

Applicant: Japan Display Inc.

Inventor： Toshiyuki HIGANO ,  Kazuhiro NISHIYAMA ,  Genki ASOZU ,  Kazuki MATSUNAGA

IPC: G02F1/1333 ,  G02F1/1335 ,  G06K9/00

Abstract: According to an aspect, a detection apparatus includes: an optical sensor including a sensor base member and a plurality of photoelectric conversion elements that are provided on the sensor base member and each of which is configured to output a signal corresponding to light emitted to the photoelectric conversion element; and a lighting device including a plurality of first light-emitting elements configured to emit first light having a first maximum emission wavelength and a plurality of second light-emitting elements configured to emit second light having a second maximum emission wavelength. Each of the photoelectric conversion elements has responsivity in a wavelength region including a wavelength region of the first light and a wavelength region of the second light.

公开(公告)号：US20250024695A1

公开(公告)日：2025-01-16

申请号：US18753064

申请日：2024-06-25

Applicant: Japan Display Inc.

Inventor： Motochika YUKAWA ,  Kazuki MATSUNAGA ,  Genki ASOZU

IPC: H10K39/38 ,  H10K30/88

Abstract: A light detection device includes two adjacent pixels that each include a light receiving element including a lower electrode, an organic light receiving part laminated on the lower electrode, and an upper electrode laminated on the organic light receiving part, and a wall portion that is provided between the two pixels and extends from below an upper surface of the upper electrode included in the light receiving element to above the upper surface of the upper electrode included in the light receiving element.

公开(公告)号：US20240290134A1

公开(公告)日：2024-08-29

申请号：US18659213

申请日：2024-05-09

Applicant: Japan Display Inc.

Inventor： Shigesumi ARAKI ,  Kazuki MATSUNAGA ,  Akio TAKIMOTO

IPC: G06V40/13 ,  H01L27/146

CPC classification number: G06V40/1318 ,  H01L27/14625 ,  H01L27/14678

Abstract: According to an aspect, a detection device includes: a photosensor including light-receiving elements; a front light including a light guide plate and a light source configured to emit light to a first side surface of the light guide plate; and an optical filter layer provided between the light-receiving elements and the front light. The optical filter layer includes light guide paths and a light-blocking portion. A first opening of each light guide path closest to the light-receiving elements is offset in a direction more away from the light source than a second opening of the light guide path farthest from the light-receiving elements. The light guide plate includes a scattering portion on the optical filter layer side. A first peak of an intensity of first light emitted from the detection surface of the light guide plate is observed to be tilted toward a side opposite to the first side surface.

公开(公告)号：US20240288303A1

公开(公告)日：2024-08-29

申请号：US18659181

申请日：2024-05-09

Applicant: Japan Display Inc.

Inventor： Kazuki MATSUNAGA ,  Akio TAKIMOTO ,  Shigesumi ARAKI

IPC: G01J1/04 ,  G01J1/42

CPC classification number: G01J1/0407 ,  G01J1/42

Abstract: According to an aspect, a detection device includes: a plurality of photodiodes arranged on a substrate; a front light including a light guide plate disposed so as to overlap the photodiodes and a light source configured to emit light to a side surface of the light guide plate; and an optical filter layer provided between the photodiodes and the light guide plate of the front light. The optical filter layer includes a plurality of light guide paths that at least partially overlap the photodiodes, and a light-blocking portion having higher absorptance of the light than the light guide paths. The detection device includes a reflective layer that is provided between the light guide plate and the optical filter layer and overlaps the light-blocking portion of the optical filter layer.

公开(公告)号：US20230186674A1

公开(公告)日：2023-06-15

申请号：US18102158

申请日：2023-01-27

Applicant: Japan Display Inc.

Inventor： Yasushi TOMIOKA ,  Kazuki MATSUNAGA ,  Toshiyuki HIGANO ,  Kazuhiro NISHIYAMA

IPC: G06V40/13 ,  H01L27/146

CPC classification number: G06V40/1318 ,  G06V40/1329 ,  H01L27/14643 ,  H01L27/14685

Abstract: According to an aspect, a detection device includes: a plurality of light-receiving elements configured to receive light; and a light guide portion one surface of which faces the light-receiving elements. The light guide portion includes a plurality of light guide paths provided throughout from the one surface to the other surface of the light guide portion, and a light-absorbing portion having higher absorbance of the light than that of the light guide paths. When viewed from a direction in which the light-receiving elements and the light guide portion are stacked, more than one of the light guide paths overlap one of the light-receiving elements.

公开(公告)号：US20220221954A1

公开(公告)日：2022-07-14

申请号：US17557757

申请日：2021-12-21

Applicant: Japan Display Inc.

Inventor： Tomoyuki ITO ,  Kazuki MATSUNAGA ,  Shigesumi ARAKI ,  Kazuhide MOCHIZUKI

IPC: G06F3/042 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  H01L27/146 ,  G06F3/041

Abstract: According to one embodiment, a liquid crystal display device comprises first and second substrates and a liquid crystal layer. The first substrate includes a base member, a sensor between the base member and the liquid crystal layer, a collimation layer between the sensor and the liquid crystal layer, an insulating layer between the sensor and the collimation layer, an insulating layer, and a light shielding layer between the sensor and the base member. The sensor is configured to output a signal corresponding to light incident from a liquid crystal layer side. The light shielding layer overlaps with an outer peripheral part of the first collimation layer.

公开(公告)号：US20240315561A1

公开(公告)日：2024-09-26

申请号：US18679466

申请日：2024-05-31

Applicant: Japan Display Inc.

Inventor： Kazuki MATSUNAGA ,  Shigesumi ARAKI ,  Yasushi TOMIOKA

IPC: A61B5/00

CPC classification number: A61B5/0059

Abstract: Provided is an optical sensor capable of obtaining a plurality of types of information by a plurality of wavelengths in a short time. The optical sensor includes a light receiving part that includes a plurality of pixels disposed in a plane surface and receives light from a measuring object, an interposer that includes a plurality of through holes and is disposed on an upper side of the light receiving part such that one or plurality of the through holes overlap each of the pixels, a first wavelength selecting unit that transmits light in a first wavelength band and overlaps each of the plurality of through holes belonging to a first group, and a second wavelength selecting unit that transmits light in a second wavelength band and overlaps the plurality of through holes belonging to a second group, which is different from the first group.

公开(公告)号：US20240288622A1

公开(公告)日：2024-08-29

申请号：US18659225

申请日：2024-05-09

Applicant: Japan Display Inc.

Inventor： Shigesumi ARAKI ,  Kazuki MATSUNAGA ,  Akio TAKIMOTO

IPC: F21V8/00 ,  G06V40/13 ,  H01L27/146

CPC classification number: G02B6/0043 ,  G06V40/1318 ,  H01L27/14625

Abstract: According to an aspect, a detection device includes: a plurality of photodiodes arranged on a substrate; a front light including a light guide plate disposed so as to overlap the photodiodes, a light source configured to emit light to a first side surface of the light guide plate, and a plurality of scattering portions provided on the light guide plate and configured to scatter light from the light source; and an optical filter layer provided between the photodiodes and the light guide plate of the front light. The optical filter layer includes a plurality of light guide paths that at least partially overlap the photodiodes, and a light-blocking portion having higher absorbance of the light than the light guide paths. The scattering portions are provided in an area overlapping the light-blocking portion of the optical filter layer on a surface of the light guide plate facing the optical filter layer.