公开(公告)号：US20220190163A1

公开(公告)日：2022-06-16

申请号：US17549867

申请日：2021-12-14

Applicant: Japan Display Inc.

Inventor： Takeshi SAKAI ,  Masashi TSUBUKU

IPC: H01L29/786

Abstract: According to one embodiment, a semiconductor device includes a first insulating layer, an oxide semiconductor disposed on the first insulating layer, a second insulating layer which covers the oxide semiconductor and a gate electrode disposed on the second insulating layer and overlapping the oxide semiconductor. The oxide semiconductor includes a first region overlapping the gate electrode and a second region not overlapping the gate electrode. The first insulating layer, the second region and the second insulating layer contain impurities of a same type. The impurities contained in a region directly below the second region in the first insulating layer are more than the impurities contained in the second region.

公开(公告)号：US20220187145A1

公开(公告)日：2022-06-16

申请号：US17686910

申请日：2022-03-04

Applicant: Japan Display Inc.

Inventor： Hiroumi KINJO

IPC: G01L1/20 ,  G01L1/14 ,  G01L1/16

Abstract: According to an aspect, a force sensor includes: a sensor sheet having a first surface and a second surface on an opposite side to the first surface; a substrate facing the first surface; a first adhesive layer interposed between the substrate and the sensor sheet and made of an anisotropic conductive material; and a plurality of array electrodes interposed between the substrate and the first adhesive layer and separated from each other. The first surface of the sensor sheet is bonded to the first adhesive layer. The first adhesive layer has conductivity in a thickness direction and has insulation properties in a planar direction along a plane.

公开(公告)号：US11360596B2

公开(公告)日：2022-06-14

申请号：US17073403

申请日：2020-10-19

Applicant: Japan Display Inc.

Inventor： Gen Koide

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/20 ,  G09G3/36 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362

Abstract: According to an aspect, a display device includes a display panel provided with a display region including a plurality of pixels and with a plurality of detection electrodes. The display panel includes: a plurality of lines of first common wiring configured to transmit pixel signals to be supplied to the pixels and a detection input/output signal to be supplied to the detection electrodes; pixel signal wiring electrically coupled to the pixels; detection electrode wiring electrically coupled to the detection electrodes; a first switching circuit configured to electrically couple or uncouple the first common wiring to or from the pixel signal wiring; and a second switching circuit configured to electrically couple or uncouple the first common wiring to or from the detection electrode wiring.

公开(公告)号：US11360341B2

公开(公告)日：2022-06-14

申请号：US16877998

申请日：2020-05-19

Applicant: Japan Display Inc.

Inventor： Koji Ishizaki ,  Hayato Kurasawa ,  Masanobu Ikeda

IPC: G02F1/1345 ,  G06F3/044 ,  G02F1/1333 ,  G02F1/1339 ,  G06F3/041

Abstract: A display device is provided and including first and second substrates, wherein the first substrate includes a first area, a second area overlapping the second substrate, a first edge extending in a first direction, a first terminal portion on the first area; the second substrate has a first protruding portion protruding toward the first edge of the first substrate and a second edge including a linear portion along the first edge and a curved portion connected to the linear portion and extending toward the first edge, the curved portion constitutes a part of a edge of the first protruding portion, and a width in the first direction of the first protruding portion gradually decreases toward the first edge.

公开(公告)号：US20220179149A1

公开(公告)日：2022-06-09

申请号：US17680428

申请日：2022-02-25

Applicant: Japan Display Inc.

Inventor： Masayuki MIFUNE ,  Makoto MIYAO

IPC: F21V8/00

Abstract: According to one embodiment, an illuminating device includes a lightguide plate including a curved emitting surface, and an incidence surface including a side edge curved along the emitting surface, a printed circuit board facing the incidence surface, and light sources mounted on the printed circuit board. Each light source includes a light-emitting center, a pair of connection terminals, and a central axis extending through the connection terminals and the light-emitting center. The light sources are arranged along a curved mounting line extending along the curved side edge of the incidence surface on the printed circuit board. The light-emitting centers are located on the mounting line, and the central axes are parallel to each other.

公开(公告)号：US11353647B2

公开(公告)日：2022-06-07

申请号：US17493035

申请日：2021-10-04

Applicant: Japan Display Inc.

Inventor： Hiroyuki Shimokawa ,  Nobuyuki Suzuki

IPC: F21V8/00 ,  G02F1/13357

Abstract: According to one embodiment, an electronic device includes a liquid crystal panel and an illumination device. The illumination device includes a first light guide having a first opening and facing the liquid crystal panel, a first light source facing the first light guide, a second light guide provided in the first opening and having a first main surface facing the liquid crystal panel, a second main surface, and a side surface, a second light source having a light emitting surface facing the side surface, and a wavelength conversion element located between the side surface and the light emitting surface, and configured to convert a wavelength of light from the second light source.

公开(公告)号：US20220173248A1

公开(公告)日：2022-06-02

申请号：US17523054

申请日：2021-11-10

Applicant: Japan Display Inc.

Inventor： Akihiro HANADA ,  Takuo KAITOH

IPC: H01L29/786

Abstract: A semiconductor device includes a thin-film transistor. The thin-film transistor comprises an oxide semiconductor layer, a gate insulating layer, a gate electrode overlapped on the oxide semiconductor layer through the gate insulating layer, a source electrode in contact with the oxide semiconductor layer, a drain electrode in contact with the oxide semiconductor layer and n (n is a natural number) metal layer(s) in contact with the oxide semiconductor layer and disposed across the oxide semiconductor layer between the source electrode and the drain electrode. The oxide semiconductor layer has (n+1) channel regions between the source electrode and the drain electrode in a plan view.

公开(公告)号：US20220173132A1

公开(公告)日：2022-06-02

申请号：US17671709

申请日：2022-02-15

Applicant: Japan Display Inc.

Inventor： Koji YAMAMOTO ,  Tatsuya ISHII

IPC: H01L27/12 ,  G09G3/36 ,  H01L29/786 ,  H01L27/02 ,  G09G3/3266

Abstract: To make the dimension of an electrostatic protection circuit small with the same maintained high in sensitivity. The electrostatic protection circuit is of the configuration that a first diode and a second diode are connected in series, wherein a semiconductor layer owned by each diode is configured to be sandwiched between a gate electrode and a conductive light shielding film. The light shielding film is formed to overlap with the semiconductor layer and has a wider area than the semiconductor layer. This results in having a gate covering the semiconductor layer from an upper side and a back gate covering the semiconductor layer from a lower side, so that the sensitivity can be maintained high irrespective of decreasing the electrostatic protection circuit in dimension.

公开(公告)号：US20220171237A1

公开(公告)日：2022-06-02

申请号：US17651598

申请日：2022-02-18

Applicant: Japan Display Inc.

Inventor： Masahiko KURIHARA ,  Kouji FUJISAWA

IPC: G02F1/13357 ,  G02F1/1335

Abstract: According to one embodiment, an illumination device includes a wiring substrate, light emitting elements, a projection, and a protective layer. The main surface of the wiring substrate is divided into segment regions. Each of the segment regions is provided with n of the light emitting elements. N is greater than 1. The light emitting elements are independently driven in units of the segment regions. The protective layer is configured to protect the light emitting elements. The upper surface of the protective layer is located on the main surface side from the highest part of the projection.

公开(公告)号：US20220171236A1

公开(公告)日：2022-06-02

申请号：US17539196

申请日：2021-12-01

Applicant: Japan Display Inc.

Inventor： Mitsutaka OKITA

IPC: G02F1/1335 ,  G02F1/139 ,  G02F1/1333

Abstract: According to one embodiment, a display device comprises a liquid crystal layer held between a first substrate and a second substrate, a display region having a first region in which a plurality of pixels are provided, a non-display region provided in an island-like shape in the display region and having a second region, a first polarizer and a second polarizer that overlap the first region, and a third polarizer and a fourth polarizer that overlap the second region, wherein a transmission axis of the fourth polarizer and a transmission axis of the second polarizer form an angle other than 0° and other than 90° with each other.