公开(公告)号：US12056303B2

公开(公告)日：2024-08-06

申请号：US18196117

申请日：2023-05-11

Applicant: Japan Display Inc.

Inventor： Koji Noguchi

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/36 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368

CPC classification number: G06F3/0412 ,  G06F3/04164 ,  G06F3/04166 ,  G06F3/0443 ,  G06F3/0445 ,  G06F3/0446 ,  G09G3/3648 ,  G02F1/13338 ,  G02F1/133514 ,  G02F1/134309 ,  G02F1/13439 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2201/52 ,  G06F2203/04101 ,  G06F2203/04102 ,  G09G2354/00

Abstract: According to an aspect, a touch detection device includes: a first substrate; a second substrate opposed to the first substrate; a cover base material opposed to the second substrate; a plurality of first electrodes overlapping a display region on a plane parallel with the first substrate; and a second electrode arranged at the cover base material and overlapping a frame region outside the display region. Proximity or contact of an object with respect to the frame region is detected based on capacitance between the first electrodes and the second electrode. The second electrode extends along a side of the frame region.

公开(公告)号：US11960672B2

公开(公告)日：2024-04-16

申请号：US18078410

申请日：2022-12-09

Applicant: Japan Display Inc.

Inventor： Koji Noguchi ,  Yoshitoshi Kida ,  Kohei Azumi

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/047 ,  G09G3/36 ,  G09G5/00 ,  G09G5/18

CPC classification number: G06F3/0412 ,  G06F3/04166 ,  G06F3/0418 ,  G06F3/04184 ,  G06F3/0445 ,  G06F3/0446 ,  G06F3/047 ,  G09G3/36 ,  G09G3/3677 ,  G09G5/003 ,  G09G5/18 ,  G09G3/3685 ,  G09G2300/0426 ,  G09G2310/0202 ,  G09G2310/0297 ,  G09G2310/08

Abstract: A display device is provided and includes signal line; pixel electrode; drive electrode opposed to pixel electrode; scanning lines; and display periods and a detection period in frame, wherein during one of display periods, common voltage is applied to drive electrode, scanning signal is applied to some scanning lines, pixel signal is applied to pixel electrode, wherein, during detection period, AC drive or pulse signal is applied to drive electrode, AC drive or pulse signal having pulses, wherein pulses during the detection period is less than number of some of scanning signal lines.

公开(公告)号：US11868570B2

公开(公告)日：2024-01-09

申请号：US18086802

申请日：2022-12-22

Applicant: Japan Display Inc.

Inventor： Koji Noguchi ,  Koji Ishizaki ,  Hayato Kurasawa

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/04164 ,  G06F3/04166 ,  G06F2203/04103

Abstract: According to one embodiment, an electrostatic capacitance-type sensor-equipped display device includes a display panel with a display surface which displays an image. The sensor includes a plurality of detection electrodes disposed in a matrix, the detection electrodes being mutually electrically independently provided above the display surface and being configured to detect a variation in electrostatic capacitance, and a plurality of lead lines provided above the display surface, connected to the detection electrodes in a one-to-one correspondence, and formed of a metal.

公开(公告)号：US11620013B2

公开(公告)日：2023-04-04

申请号：US17666674

申请日：2022-02-08

Applicant: Japan Display Inc.

Inventor： Yoshitoshi Kida ,  Koji Noguchi ,  Hiroshi Mizuhashi ,  Kohei Azumi

IPC: G06F3/044 ,  G06F3/041 ,  H03K17/96 ,  G02F1/1333

Abstract: There are provided a display panel with a touch detection function, a drive circuit, and an electronic unit, which make it possible to realize many functions related to touch detection. The display panel includes: one or more display elements; one or more drive electrodes extending in one direction; an electrode drive section integrated into a chip, and applying a drive signal to the drive electrodes; and one or more touch detection electrodes extending in a direction intersecting the direction in which the drive electrodes extend.

公开(公告)号：US11531416B2

公开(公告)日：2022-12-20

申请号：US17399216

申请日：2021-08-11

Applicant: Japan Display Inc.

Inventor： Koji Ishizaki ,  Koji Noguchi ,  Osamu Ishige

IPC: G06F3/041 ,  G06F3/044

Abstract: A display device with a touch detection function including: a plurality of elements performing display operation; a plurality of touch detection electrodes arranged side by side to extend in one direction, and each outputting a detection signal based on a change in an electrostatic capacitance caused by an external proximity object; a conductive film insulated from or connected with high resistance to the touch detection electrodes, and disposed to cover the touch detection electrodes; and a touch detection circuit detecting the external proximity object by sampling the detection signal. The conductive film has a sheet resistance equal to or smaller than a predetermined resistance value, and has a time constant larger than a predetermined minimum time constant defined by sampling timings in the touch detection circuit.

公开(公告)号：US11029794B2

公开(公告)日：2021-06-08

申请号：US16166810

申请日：2018-10-22

Applicant: Japan Display Inc.

Inventor： Takayuki Nakanishi ,  Koji Noguchi ,  Koji Ishizaki ,  Yasuyuki Teranishi ,  Takeya Takeuchi

IPC: G06F3/044 ,  G09G3/298 ,  H01J11/12 ,  G06F3/047 ,  G09G3/36 ,  G06F3/0354 ,  G06F3/041 ,  G02F1/1343

Abstract: A touch panel, a display panel, and a display unit achieving prevention of erroneous detection caused by external noise. The touch panel includes: a plurality of detection scan electrodes extending in a first direction and a plurality of detection electrodes facing the plurality of detection scan electrodes and extending in a second direction which intersects the first direction. A ratio of fringe capacitance to total capacitance between one or more selected detection scan electrodes and a first detection electrode is different from a ratio of fringe capacitance to total capacitance between the one or more selected detection scan electrodes and a second detection electrode. The one or more selected detection scan electrodes are selected, in a desired unit, from the plurality of detection scan electrodes, to be supplied with a selection pulse, and each of the first and the second detection electrodes is selected from the plurality of detection electrodes.

公开(公告)号：US10817108B2

公开(公告)日：2020-10-27

申请号：US16295021

申请日：2019-03-07

Applicant: Japan Display Inc.

Inventor： Takayuki Nakanishi ,  Koji Noguchi ,  Koji Ishizaki ,  Yasuyuki Teranishi ,  Takeya Takeuchi

IPC: G06F3/041 ,  G02F1/1333 ,  G06F3/044 ,  G09G5/18 ,  G02F1/1343 ,  G02F1/1335 ,  G02F1/1368

Abstract: An information input device including a touch panel configured to be provided with a touch sensor that detects a position at which a sensing object is brought close to a sensing surface. In this information input device, the touch sensor has a scanning electrode and a detecting electrode that is opposed to the scanning electrode with the intermediary of a dielectric substance, and is a capacitive sensor whose electrostatic capacitance changes if the sensing object is brought close to the detecting electrode. Furthermore, a slit is formed in a surface of the detecting electrode opposed to the scanning electrode.

公开(公告)号：US10558307B2

公开(公告)日：2020-02-11

申请号：US15903897

申请日：2018-02-23

Applicant: Japan Display Inc.

Inventor： Naoki Takada ,  Hayato Kurasawa ,  Koji Noguchi ,  Takayuki Nakanishi ,  Yasuyuki Teranishi

IPC: G06F3/044 ,  H03K17/96 ,  G06F3/041

Abstract: A display device includes a substrate, a plurality of detection electrodes, a drive circuit, a detector, and a first switching circuit. The detection electrodes are provided in a display area of the substrate. The drive circuit supplies a drive signal to the detection electrodes. The detector receives, from the detection electrodes, a detection signal corresponding to a capacitance change in the detection electrodes occurring when the drive signal is supplied. The first switching circuit is coupled to the detector via wiring and provided between the detection electrodes and the detector. The first switching circuit changes the number of detection electrodes electrically coupled to one of the wiring based on the detection signal.

公开(公告)号：US10514810B2

公开(公告)日：2019-12-24

申请号：US16397397

申请日：2019-04-29

Applicant: Japan Display Inc.

Inventor： Koji Noguchi ,  Yoshitoshi Kida

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

Abstract: A display apparatus with a substrate having a long side and a short side, a plurality of driving electrodes arranged on the substrate parallel to the long side of the substrate, a plurality of touch detection electrodes arranged on the substrate parallel to the short side of the substrate, a control unit electrically coupled to each of the plurality of driving electrodes and which sequentially drives the plurality of driving electrodes, and a detection unit electrically coupled to each of the touch detection electrodes.

公开(公告)号：US10437364B2

公开(公告)日：2019-10-08

申请号：US15465837

申请日：2017-03-22

Applicant: Japan Display Inc.

Inventor： Yasuyuki Teranishi ,  Hayato Kurasawa ,  Koji Noguchi

IPC: G06F3/041 ,  G02F1/1343 ,  G02F1/1333 ,  G02F1/1362 ,  H01L27/32 ,  G06F3/044

Abstract: According to one embodiment, a sensor-equipped display device, includes pixel electrodes above an insulating substrate, a first sensor electrode includes a first electrode portion and a first line portion connected to the first electrode portion, and a second sensor electrode includes a second electrode portion and a second line portion connected to the second electrode portion, each of the first sensor electrode and the second sensor electrode being opposed to the pixel electrodes, and includes a first conductive layer and a second conductive layer which is disposed on the first conductive layer.