公开(公告)号：US10474284B2

公开(公告)日：2019-11-12

申请号：US15618828

申请日：2017-06-09

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/1343 ,  G06F3/046 ,  G09G3/36 ,  G02F1/1333 ,  G02F1/1368 ,  G02F1/1335

Abstract: An input detection device includes: a plurality of drive electrodes each of which includes a first end and a second end; a first scanner circuit and a second scanner circuit which select the first ends of the plurality of drive electrodes; a third scanner circuit and a fourth scanner circuit which select the second ends of the plurality of drive electrodes; and a controller which supplies a first drive voltage to the first end of a first drive electrode and to the second end of a second drive electrode and supplies a second drive voltage different from the first drive voltage to the second end of the first drive electrode and to the first end of the second drive electrode via the first scanner circuit, the second scanner circuit, the third scanner circuit, and the fourth scanner circuit.

公开(公告)号：US10430012B2

公开(公告)日：2019-10-01

申请号：US16274635

申请日：2019-02-13

Applicant: Japan Display Inc.

Inventor： Hiroshi Mizuhashi ,  Gen Koide ,  Tadayoshi Katsuta

IPC: G06F3/046 ,  G06F3/041 ,  G02F1/1333 ,  G02F1/1362 ,  G06F3/044 ,  G06F3/047 ,  G02F1/1343 ,  G06F3/0354 ,  G02F1/1368 ,  G02F1/1335

Abstract: Provided is a touch detection function-equipped display device that can be manufactured while suppressing an increase of price. A display device is provided with a pixel array including a plurality of pixels arranged in a matrix form, and drive electrodes each of which is arranged to extend in a first direction in the pixel array. A drive signal is supplied to a first area in a first drive electrode among the drive electrodes, and a ground voltage is supplied to a second area extending in the first direction with respect to the first area to generate a magnetic field in the first drive electrode according to the drive signal at a time of detecting an external proximity object.

公开(公告)号：US10429981B2

公开(公告)日：2019-10-01

申请号：US15357666

申请日：2016-11-21

Applicant: Japan Display Inc.

Inventor： Koji Noguchi ,  Tadayoshi Katsuta ,  Yasuyuki Teranishi

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

Abstract: A detection device includes a substrate, first electrodes, second electrodes, and a conductor. The substrate has a first surface and a second surface opposite to the first surface. The first electrodes are provided in a display area of the substrate and detect the position of an object being in contact with or in proximity to the first surface side of the substrate or pressure of the object being in contact with the first surface side. The second electrodes are provided along at least one side of the outer periphery of the display area. The conductor is provided on the second surface side of the substrate apart from the substrate and generates an electrostatic capacitor between the conductor and the second electrodes.

公开(公告)号：US10429973B2

公开(公告)日：2019-10-01

申请号：US15672893

申请日：2017-08-09

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: G06F3/041 ,  G02F1/1333 ,  G02F1/1343 ,  G06F3/0354 ,  G06F3/044 ,  G06F3/046

Abstract: The input detection device includes: a line having an end to which a driving signal is supplied and extending in a first direction; a plurality of drive electrodes extending in a second direction intersecting the first direction and arranged in parallel in the first direction; a selecting drive circuit selecting the drive electrode from the plurality of drive electrodes and connecting an end of the selected drive electrode to the line; a driving signal circuit supplying the driving signal to the end of the line; and a plurality of line patterns connected to each drive electrode. A line density of line patterns connected to a drive electrode connected to be close to the end of the line is smaller than a line density of line patterns connected to another drive electrode connected to be far from the end of the line.

公开(公告)号：US10379415B2

公开(公告)日：2019-08-13

申请号：US15626441

申请日：2017-06-19

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: G02F1/1362 ,  G02F1/1368 ,  G02F1/167 ,  G09G3/34

Abstract: According to an aspect, a display apparatus includes: a display panel including a plurality of pixels each including a pixel capacitor and a pixel transistor, a scanning line that is coupled to the respective pixels and is configured to receive a scan signal, and a video signal line that is coupled to the respective pixels and is configured to receive a video signal; and a driver configured to drive the display panel. The pixel transistor includes: at least one N-channel metal oxide semiconductor (NMOS) transistor coupled between the video signal line and the pixel capacitor; and a P-channel metal oxide semiconductor (PMOS) transistor coupled in parallel with the NMOS transistor.

公开(公告)号：US10268061B2

公开(公告)日：2019-04-23

申请号：US15686691

申请日：2017-08-25

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta ,  Hiroshi Mizuhashi

IPC: G06F3/041 ,  G02F1/1333 ,  G02F1/1343 ,  G06F3/044 ,  G06F3/046

Abstract: In, for example, such an in-cell touch panel of an electromagnetic induction method as to generate a magnetic field for touch detection in a display device, provided is an input detection device in which even an end portion of a display area can generate the same magnetic field as that generated at a center of the display area. The input detection device includes a plurality of first drive electrodes placed in a detection area; a second drive electrode placed in a frame area; and a second drive circuit driving the second drive electrode. In addition, the plurality of first drive electrodes and the second drive electrode extend in a first direction to be arranged in a second direction crossing the first direction, and the second drive electrode and the second drive circuit are arranged in the first direction in the frame area.

公开(公告)号：US10228788B2

公开(公告)日：2019-03-12

申请号：US15469657

申请日：2017-03-27

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta ,  Koji Noguchi ,  Daisuke Ito ,  Yasuyuki Teranishi

IPC: G06F3/045 ,  G06F3/041 ,  G06F3/044 ,  G09G3/36

Abstract: A performance of a display device having an input device is improved. A display device includes: an electro-optical layer; a first driving electrode and a second driving electrode which drives the electro-optical layer; a driver chip which outputs a video signal; a switch circuit which is arranged outside the driver chip, which selects a potential to be supplied to the second driving electrode, and which includes a first switch element and a second switch element; a shift register circuit connected to the switch circuit; and a detection circuit which detects that an object is close or in contact. Each of the first switch element and the second switch element is selectively turned ON or OFF by the shift register circuit. The detection circuit is electrically connected to the first switch element and the second switch element.

公开(公告)号：US20190034016A1

公开(公告)日：2019-01-31

申请号：US16149190

申请日：2018-10-02

Applicant: Japan Display Inc.

Inventor： Hiroshi MIZUHASHI ,  Tadayoshi Katsuta ,  Gen Koide ,  Toshiaki Fukushima

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G06F3/044 ,  G09G3/3648 ,  G09G3/3685 ,  G09G2300/023 ,  G09G2300/0426 ,  G09G2300/0876 ,  G09G2310/0297 ,  G09G2310/08

Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The circuit unit is provided in the peripheral region, and is electrically connected to one of the second lines and one of the third lines. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. At least a portion of the circuit unit is disposed between the drive element and the first substrate.

公开(公告)号：US10156952B2

公开(公告)日：2018-12-18

申请号：US15679612

申请日：2017-08-17

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta ,  Hiroshi Mizuhashi ,  Hayato Kurasawa

IPC: G06F3/046 ,  G02F1/1333 ,  G02F1/1343 ,  G06F3/0354 ,  G06F3/041 ,  G06F3/047 ,  G06F3/044

Abstract: An input detection device is provided with a plurality of drive electrodes, a metal electrode opposed to the plurality of drive electrodes and having a predetermined wiring pattern, and a light-shielding film. In plan view, a width of the wiring pattern of the metal electrode overlapped with a portion of the light-shielding film with a large width is larger than a width of the wiring pattern of the metal electrode overlapped with portions other than the portion of the light-shielding film with the large width.

公开(公告)号：US10146348B2

公开(公告)日：2018-12-04

申请号：US15626619

申请日：2017-06-19

Applicant: Japan Display Inc.

Inventor： Hiroshi Mizuhashi ,  Tadayoshi Katsuta ,  Gen Koide ,  Toshiaki Fukushima

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044

Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The circuit unit is provided in the peripheral region, and is electrically connected to one of the second lines and one of the third lines. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. At least a portion of the circuit unit is disposed between the drive element and the first substrate.