公开(公告)号：US20250093708A1

公开(公告)日：2025-03-20

申请号：US18964732

申请日：2024-12-02

Applicant: Japan Display Inc.

Inventor： Mitsutaka OKITA ,  Shinichiro OKA ,  Daiichi SUZUKI

IPC: G02F1/1343

Abstract: A reflecting device includes a patch electrode, a common electrode, a liquid crystal layer sandwiched between the patch electrode and the common electrode, and a metal film arranged on the opposite side of the common electrode from the side of the liquid crystal layer, wherein the metal film is spaced apart from the common electrode, and the patch electrode is arranged to overlap the metal film. X can be the value obtained by multiplying a distance T between the common electrode and the metal film by the wavelength λ of the radio wave irradiated to the patch electrode, and x can be equal to or greater than 0.02 and less than or equal to 0.34. X can be equal to or greater than 0.10 and less than or equal to 0.22.

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：US20240322429A1

公开(公告)日：2024-09-26

申请号：US18673910

申请日：2024-05-24

Applicant: Japan Display Inc.

Inventor： Daiichi SUZUKI ,  Shinichiro OKA ,  Shigesumi ARAKI ,  Mitsutaka OKITA

IPC: H01Q3/46 ,  G02F1/1343 ,  H01Q3/36 ,  H01Q15/14

CPC classification number: H01Q3/46 ,  G02F1/134336 ,  H01Q3/36 ,  H01Q15/148

Abstract: According to one embodiment, an intelligent reflecting surface includes a plurality of individual areas, each of the individual areas including a first area and one or more second areas, a connection area, a first substrate including a plurality of patch electrodes, a second substrate including a common electrode, the common electrode being located in the first area of each of the individual areas and the connection area and being opposed to the patch electrodes, and a liquid crystal layer held between the first substrate and the second substrate and opposed to the patch electrodes.

公开(公告)号：US20240103322A1

公开(公告)日：2024-03-28

申请号：US18530320

申请日：2023-12-06

Applicant: Japan Display Inc.

Inventor： Shigesumi ARAKI ,  Mitsutaka OKITA ,  Daiichi SUZUKI ,  Shinichiro OKA

IPC: G02F1/1343 ,  G02F1/1335 ,  H01Q3/36

CPC classification number: G02F1/134309 ,  G02F1/133553 ,  H01Q3/36

Abstract: A phase modulating device includes a first electrode; a second electrode; and a liquid crystal layer including a plurality of liquid crystal molecules and arranged between the first electrode and the second electrode, wherein a height of the liquid crystal layer from the first electrode toward the second electrode is 30 μm or more and 50 μm or less, and in a planar view of a first plane including the first electrode, the liquid crystal layer and the second electrode, the first plane intersecting with an in-plane direction of the first electrode, at least two liquid crystal molecules arranged adjacent to each other in a direction parallel to the in-plane direction of the first electrode and oriented differently from each other are included.

公开(公告)号：US20230400747A1

公开(公告)日：2023-12-14

申请号：US18451122

申请日：2023-08-17

Applicant: Japan Display Inc.

Inventor： Shinichiro OKA ,  Mitsutaka OKITA ,  Daiichi SUZUKI ,  Shigesumi ARAKI

IPC: G02F1/313 ,  G02F1/00

CPC classification number: G02F1/313 ,  G02F1/0045 ,  G02F1/009 ,  G02F2201/121 ,  G02F2203/02

Abstract: According to one embodiment, an intelligent reflecting device includes a first substrate including a first base and a plurality of patch electrodes, a second substrate including a second base and a common electrode opposed to the plurality of patch electrodes, a liquid crystal layer held between the first and second substrates, a heat exchanger provided in contact with the second substrate, a temperature sensor, and a temperature controller that controls the heat exchanger based on the temperature detected by the temperature sensor, wherein an incident wave is incident on an incidence surface of the first substrate, and the heat exchanger is provided on a surface opposed to the incidence surface.

公开(公告)号：US20220037785A1

公开(公告)日：2022-02-03

申请号：US17388573

申请日：2021-07-29

Applicant: Japan Display Inc.

Inventor： Mitsutaka OKITA

IPC: H01Q3/36 ,  H01Q19/10 ,  H01Q21/06

Abstract: According to one embodiment, a method of driving a phased array antenna, includes applying voltages to phase control electrodes in a first period such that radio waves to be emitted from antennas are in a same phase in a first emission direction, and applying the voltages to the phase control electrodes in a second period such that the radio waves to be emitted from the antennas are held in the same phase in the first emission direction. An absolute value of the voltage applied in the second period is different from an absolute value of the voltage applied in the first period, in each of the phase control electrodes.

公开(公告)号：US20210026172A1

公开(公告)日：2021-01-28

申请号：US17038413

申请日：2020-09-30

Applicant: Japan Display Inc.

Inventor： Mitsutaka OKITA

IPC: G02F1/1339 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1333

Abstract: According to one embodiment, a display device comprises a first A spacer, a second A spacer, a third A spacer and a fourth A spacer. The first A spacer and the third A spacer are on a first substrate. The second A spacer and the fourth A spacer are on a second substrate. At least one of the first and second substrates is a flexible substrate. The first A spacer and the second A spacer are aligned in a first direction. The third A spacer and the fourth A spacer are aligned in a second direction. Side surfaces of the first A spacer and the second A spacer face in the first direction. Side surfaces of the third A spacer and the fourth A spacer face in the second direction.

公开(公告)号：US20180348555A1

公开(公告)日：2018-12-06

申请号：US15947324

申请日：2018-04-06

Applicant: Japan Display Inc.

Inventor： Mitsutaka OKITA

IPC: G02F1/1339 ,  G02F1/1362 ,  G02F1/1343 ,  G02F1/1335

CPC classification number: G02F1/1339 ,  G02F1/133305 ,  G02F1/133514 ,  G02F1/13394 ,  G02F1/1343 ,  G02F1/136286 ,  G02F2001/13396

Abstract: According to one embodiment, a display device comprises a first A spacer, a second A spacer, a third A spacer and a fourth A spacer. The first A spacer and the third A spacer are on a first substrate. The second A spacer and the fourth A spacer are on a second substrate. At least one of the first and second substrates is a flexible substrate. The first A spacer and the second A spacer are aligned in a first direction. The third A spacer and the fourth A spacer are aligned in a second direction. Side surfaces of the first A spacer and the second A spacer face in the first direction. Side surfaces of the third A spacer and the fourth A spacer face in the second direction.

公开(公告)号：US20170115525A1

公开(公告)日：2017-04-27

申请号：US15292304

申请日：2016-10-13

Applicant: Japan Display Inc.

Inventor： Mitsutaka OKITA

IPC: G02F1/1335 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1333 ,  G02F1/1368 ,  G02F1/1339

CPC classification number: G02F1/133512 ,  G02F1/133345 ,  G02F1/1339 ,  G02F1/13394 ,  G02F1/134309 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/134372 ,  G02F2201/121 ,  G02F2201/123 ,  G02F2202/02

Abstract: There is provided a liquid crystal display device that reduces viewing angle color mixture on a high definition screen. In the liquid crystal display device, a pixel electrode is formed on a region surrounded by scanning lines and picture signal lines. The scanning line is insulated from the picture signal line by a first insulating film. An organic insulating film is formed to cover the picture signal line. The organic insulating film is not formed below the pixel electrode. A common electrode is formed to cover the organic insulating film and the first insulating film. A second insulating film is formed to cover the common electrode. The pixel electrode is formed on the second insulating film. On the organic insulating film, a metal light shielding film is formed as extending in a second direction. The metal light shielding film is in contact with the common electrode.