公开(公告)号：US20240345673A1

公开(公告)日：2024-10-17

申请号：US18754251

申请日：2024-06-26

Applicant: Japan Display Inc.

Inventor： Hiroshi Mizuhashi ,  Yoshitoshi Kida ,  Koji Noguchi

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G06F3/0445 ,  G06F3/0446

Abstract: A display panel with a touch detection function, in which display operation is less affected by touch detection operation, a method of driving the display panel with a touch detection function, a driving circuit, and an electronic unit having the display panel with a touch detection function are disclosed. The display panel with a touch detection function includes: one or more display elements; one or more drive electrodes; one or more touch detection electrodes; and a drive section selectively applying a DC drive signal or an AC drive signal to the drive electrodes.

公开(公告)号：US20240256070A1

公开(公告)日：2024-08-01

申请号：US18632987

申请日：2024-04-11

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：US11907459B2

公开(公告)日：2024-02-20

申请号：US18104384

申请日：2023-02-01

Applicant: Japan Display Inc.

Inventor： Koji Noguchi

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/1343 ,  G02F1/1333

CPC classification number: G06F3/0412 ,  G06F3/0445 ,  G06F3/0446 ,  G06F3/041661 ,  G02F1/13338 ,  G02F1/134372

Abstract: According to an aspect, a touch detection device includes: drive electrodes, a drive signal being input to each of the drive electrodes; and a first drive electrode included in the drive electrodes and divided into subdivided electrodes. An arrangement pitch of the subdivided electrodes is finer than an arrangement pitch of the drive electrodes, the drive electrodes are configured to perform a touch detection in a first sensing period and in a second sensing period, and the subdivided electrodes are driven collectively in the first sensing period and driven individually in the second sensing period.

公开(公告)号：US11847287B2

公开(公告)日：2023-12-19

申请号：US18173879

申请日：2023-02-24

Applicant: Japan Display Inc.

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

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

CPC classification number: G06F3/0446 ,  G06F3/03547 ,  G06F3/047 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/0445 ,  G09G3/2983 ,  G09G3/2986 ,  G09G3/3696 ,  H01J11/12 ,  G02F1/134363 ,  G02F1/134372 ,  G06F3/0448 ,  G09G2330/06

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. 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：US20230280610A1

公开(公告)日：2023-09-07

申请号：US18315566

申请日：2023-05-11

Applicant: Japan Display Inc.

Inventor： Koji Noguchi ,  Daisuke Takama ,  Yoshitoshi Kida

IPC: G02F1/1333 ,  G02F1/1343 ,  G06F3/044 ,  G06F3/041

CPC classification number: G02F1/13338 ,  G02F1/134363 ,  G06F3/0443 ,  G06F3/0445 ,  G06F3/0446 ,  G06F3/044 ,  G06F3/0412 ,  G02F2201/12 ,  G09G3/3648

Abstract: A common electrode for a display, which is originally provided in a liquid crystal display element, is also used as one (drive electrode) of a pair of electrodes for a touch sensor, and the other (detection-electrode-for-the-sensor) of the pair of electrodes is newly formed. An existing common drive signal as a drive signal for display is used in common for a drive signal for the touch sensor. A capacitance is formed between the common electrode and the detection-electrode-for-the-sensor, and touch detection is performed by utilizing a change of this capacitance caused by a finger touch of a user. Thus, a display device with a touch sensor is also applicable to a mobile device in which electric potential of the user is inconstant in many cases. The newly-provided electrode is only the detection-electrode-for-the-sensor, and it is unnecessary to newly prepare a drive signal for the touch sensor.

公开(公告)号：US11687178B2

公开(公告)日：2023-06-27

申请号：US17376917

申请日：2021-07-15

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 ,  G06F3/0443 ,  G06F3/0445 ,  G06F3/0446 ,  G06F3/04164 ,  G06F3/04166 ,  G09G3/3648 ,  G02F1/1368 ,  G02F1/13338 ,  G02F1/13439 ,  G02F1/133514 ,  G02F1/134309 ,  G02F1/136286 ,  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：US20230124285A1

公开(公告)日：2023-04-20

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

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：US11630544B2

公开(公告)日：2023-04-18

申请号：US17339203

申请日：2021-06-04

Applicant: Japan Display Inc.

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

IPC: G06F3/044 ,  G06F3/047 ,  G06F3/041 ,  G09G3/36 ,  G09G3/298 ,  G06F3/0354 ,  H01J11/12 ,  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：US11526224B2

公开(公告)日：2022-12-13

申请号：US17322059

申请日：2021-05-17

Applicant: Japan Display Inc.

Inventor： Koji Noguchi ,  Yoshitoshi Kida ,  Kohei Azumi

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

Abstract: A display device is provided and includes scanning and signal lines; switch electrically coupled to scanning and signal lines; pixel electrode electrically coupled to switch and opposed to drive electrode; first and second display periods, and detection period between first and second display periods, wherein during first and second display periods, common voltage is applied to drive electrode, scanning signal is applied to scanning line and switch, pixel signal is applied to pixel electrode through signal line and switch, during detection period, AC drive signal or pulse drive signal is applied to drive electrode, and scanning signal is not applied to scanning line.

公开(公告)号：US20220155892A1

公开(公告)日：2022-05-19

申请号：US17588394

申请日：2022-01-31

Applicant: Japan Display Inc.

Inventor： Koji Noguchi ,  Koji Ishizaki ,  Hayato Kurasawa

IPC: G06F3/044 ,  G06F3/041

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.