公开(公告)号：US20190146619A1

公开(公告)日：2019-05-16

申请号：US16171561

申请日：2018-10-26

Applicant: Japan Display Inc.

Inventor： Hayato KURASAWA ,  Toshinori UEHARA

IPC: G06F3/041 ,  G02F1/1343 ,  G02F1/1333 ,  G06F3/044 ,  G02F1/1335 ,  F21V8/00

Abstract: According to an aspect, a display device includes: a first substrate; a display functional layer; a plurality of first electrodes; a light guide plate; a plurality of second electrodes; and a controller configured to control the first electrodes and the second electrodes. The first substrate, the display functional layer, the first electrodes, the light guide plate, and the second electrodes are stacked in this order. The controller performs operations during a plurality of display periods to display an image, during a first sensing period, and during a second sensing period in a time-division manner. The first electrodes are supplied with a first drive signal and an electromotive force caused by electromagnetic induction is generated in the second electrodes during the first sensing period. The first electrodes are supplied with a second drive signal to generate electrostatic capacitance between the first electrodes and the second electrodes during the second sensing period.

公开(公告)号：US20190102039A1

公开(公告)日：2019-04-04

申请号：US16139759

申请日：2018-09-24

Applicant: Japan Display Inc.

Inventor： Toshinori UEHARA ,  Hayato KURASAWA

IPC: G06F3/041 ,  G06F3/044 ,  G06K9/00

Abstract: A detection apparatus includes a substrate, a plurality of first electrodes provided on the substrate, a first selection circuit provided on the substrate, the first selection circuit including a plurality of first input terminals that receive a first control signal supplied from an outside and a plurality of first output terminals that output a first selection signal based on the first control signal, and a second selection circuit provided on the substrate, the second selection circuit including a plurality of second input terminals that receive a second control signal supplied from the outside and a plurality of second output terminals that output a second selection signal based on the second control signal.

公开(公告)号：US20190102020A1

公开(公告)日：2019-04-04

申请号：US16139799

申请日：2018-09-24

Applicant: Japan Display Inc.

Inventor： Yuji SUZUKI ,  Toshinori UEHARA ,  Hayato KURASAWA

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

Abstract: A detection apparatus includes a substrate, a plurality of first electrode blocks provided on the substrate, each of the first electrode blocks including a plurality of first electrodes, and a first electrode selection circuit configured to select at least one of the first electrode blocks in a time-division manner in a first detection period and select at least one of the first electrodes in a second detection period. The least one of the first electrode blocks selected by the first electrode selection circuit is supplied with a first drive signal in the first detection period, and the at least one of the first electrodes selected by the first electrode selection circuit is supplied with a second drive signal, a voltage level of the second drive signal different from a voltage level of the first drive signal in the second detection period.

公开(公告)号：US20170242531A1

公开(公告)日：2017-08-24

申请号：US15437686

申请日：2017-02-21

Applicant: Japan Display Inc.

Inventor： Toshio SOYA ,  Toshinori UEHARA ,  Hiroshi MIZUHASHI

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

CPC classification number: G06F3/0416 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04101 ,  G06F2203/04107 ,  G06F2203/04108

Abstract: According to an aspect, a touch detecting apparatus includes: three or more detectors; three or more detection signal lines; an integration line; three or more switches; and a control circuit. The control circuit controls the number of times an output integration is performed. During the output integration, the control circuit switches a first type switch to a decoupling mode, and switches second type switches to a coupling mode. The first type switch is one switch coupled to a first type detector, and each second type switch is coupled to one or more of second type detectors with which the second type switch corresponds. During the output integration, the integration line outputs an integrated output of outputs from the second type detectors. The output integration is performed a plurality of times corresponding to at least the number of the detectors while a combination of the second type detectors is changed.

公开(公告)号：US20160012760A1

公开(公告)日：2016-01-14

申请号：US14795565

申请日：2015-07-09

Applicant: Japan Display Inc.

Inventor： Chihiro TANAKA ,  Toshihiko TANAKA ,  Toshinori UEHARA

IPC: G09G3/00

CPC classification number: G09G3/3648 ,  G09G2300/0426 ,  G09G2320/041

Abstract: According to an aspect, a display device comprising: a display unit; a plurality of electrodes arranged side by side in a first direction along a display surface of the display unit; a detecting unit that detects one of an electric resistance of the electrodes, a voltage, and a current; and a specifying unit that specifies temperature distribution of the display surface based on the one of the electric resistance of the electrodes, the voltage, and the current. The electrodes are tapered in a second direction along the display surface and orthogonal to the first direction, and the electrodes include a first electrode tapered toward one side in the second direction and a second electrode tapered toward the other side opposite to the one side. The first and second electrodes are alternately arranged side by side in the first direction.

Abstract translation: 根据一个方面，一种显示装置，包括：显示单元; 沿显示单元的显示表面沿第一方向并排布置的多个电极; 检测电极的电阻，电压和电流之一的检测单元; 以及指定单元，其基于电极的电阻，电压和电流中的一个来指定显示表面的温度分布。 电极沿着显示面在与第一方向正交的第二方向上逐渐变细，并且电极包括朝向第二方向的一侧渐缩的第一电极和朝向与该一侧相反的另一侧逐渐变细的第二电极。 第一和第二电极沿第一方向并排布置。

公开(公告)号：US20240419253A1

公开(公告)日：2024-12-19

申请号：US18745182

申请日：2024-06-17

Applicant: Japan Display Inc.

Inventor： Toshinori UEHARA ,  Muneaki ZAKO ,  Keiji TAGO ,  Tenfu NAKAMURA

IPC: G06F3/01

Abstract: A display device includes a first camera that captures an image of a first viewer present in a first normal direction of a display surface of a transparent display, a second camera that captures an image of a second viewer present in a second normal direction of the display surface of the transparent display, the second normal direction being an opposite direction of the first normal direction, a microphone, and a control circuit that includes a user coordinate calculation circuit, a gesture detection circuit, a dictation circuit, and a drawing information generation circuit. The user coordinate calculation circuit specifies positions of the first viewer and the second viewer on the basis of the images from the first camera and the second camera. When the gesture detection circuit determines that the first viewer utters sound, the dictation circuit generates a character based on sound information from the microphone, and the generated character is displayed on the transparent display toward the second viewer by the drawing information generation circuit.

公开(公告)号：US20240183723A1

公开(公告)日：2024-06-06

申请号：US18517423

申请日：2023-11-22

Applicant: Japan Display Inc.

Inventor： Toshinori UEHARA ,  Fumihoru NAKANO

IPC: G01L1/14 ,  G01B7/16 ,  G01B7/293 ,  G01L25/00

CPC classification number: G01L1/14 ,  G01B7/22 ,  G01B7/293 ,  G01L25/00

Abstract: Disclosed herein is a detection device including a sensor substrate including strain sensors arranged on a rectangular flexible substrate at fixed intervals in a longitudinal direction. A curvature radius between a pair of adjacent strain sensors is calculated on a value from a preceding strain sensor of the pair of adjacent sensors. When a start point node is defined as a position of a first strain sensor at one end of the strain sensors, a relative position of each of the strain sensors is determined by sequentially adding the relative positions. When the first and second strain sensors overlap, positions of the first and second strain sensors are considered identical on relative space. A position of each strain sensor is corrected based on a difference between a calculated position of the second strain sensor determined by sequentially adding the relative positions and actual position of the second strain sensor.

公开(公告)号：US20220326811A1

公开(公告)日：2022-10-13

申请号：US17705894

申请日：2022-03-28

Applicant: Japan Display Inc.

Inventor： Takaaki KONO ,  Toshinori UEHARA

IPC: G06F3/044 ,  G06F3/041

Abstract: A detecting device includes a plurality of drive electrodes extending in a first direction and arrayed in a second direction, a detection electrode facing the drive electrodes in a direction orthogonal to the first direction and the second direction, a drive circuit configured to supply a drive signal to the drive electrodes, and a detector configured to detect proximity of an object to a detection region provided with the detection electrode based on an output from the detection electrode generated according to capacitance generated between the drive electrodes and the detection electrode due to the drive signal.

公开(公告)号：US20200327293A1

公开(公告)日：2020-10-15

申请号：US16883469

申请日：2020-05-26

Applicant: Japan Display Inc.

Inventor： Hayato KURASAWA ,  Toshinori UEHARA ,  Hiroshi MIZUHASHI

IPC: G06K9/00

Abstract: A fingerprint detection device includes: a substrate having a first surface and a second surface on an opposite side of the first surface, the first surface serving as a detection surface configured to detect unevenness of an object in contact or in proximity; a detection electrode provided on the second surface side of the substrate and configured to detect unevenness of a finger in contact or in proximity on the basis of an electrostatic capacitance change; and a drive circuit provided on the second surface side of the substrate and configured to supply a drive signal to the detection electrode.

公开(公告)号：US20200242318A1

公开(公告)日：2020-07-30

申请号：US16845911

申请日：2020-04-10

Applicant: Japan Display Inc.

Inventor： Fumihito SHIBANO ,  Hiroshi MIZUHASHI ,  Toshinori UEHARA ,  Kimiyo NONOYAMA ,  Hayato KURASAWA

IPC: G06K9/00

Abstract: A fingerprint sensor is provided and includes a substrate; sensor electrodes arranged in a matrix on the substrate; switches coupled to the sensor electrodes; a control line drive circuit; a signal line drive circuit; signal lines coupling the signal line drive circuit to the sensor electrodes through the switches; control lines transmitting a selection signal to the switches from the control line drive circuit; and a sensor drive electrode surrounding the matrix of the sensor electrodes, wherein a distance of the sensor drive electrode from a surface of the substrate is larger than a distance of the sensor electrodes from the surface of the substrate.