公开(公告)号：US20210004111A1

公开(公告)日：2021-01-07

申请号：US17025456

申请日：2020-09-18

Applicant: Japan Display Inc.

Inventor： Daisuke ITO ,  Hiroshi MIZUHASHI ,  Makoto HAYASHI ,  Yasuyuki TERANISHI ,  Tadayoshi KATSUTA

IPC: G06F3/041 ,  G02F1/133 ,  G02F1/1343 ,  G06F3/044 ,  G09G3/36

Abstract: A touch detection device is provided and includes driving electrodes for detecting an external proximity object, extending in first direction and arranged in second direction; first voltage line extending in second direction; second voltage line extending in second direction; third voltage line extending in second direction, third voltage line being narrower in than first voltage line and second voltage line in width; and switching circuit for electrically connecting driving electrodes and first voltage line, second voltage line, or third voltage line.

公开(公告)号：US20200218380A1

公开(公告)日：2020-07-09

申请号：US16822656

申请日：2020-03-18

Applicant: Japan Display Inc.

Inventor： Hayato KURASAWA ,  Hiroshi MIZUHASHI ,  Tadayoshi KATSUTA

IPC: G06F3/044 ,  G06F3/046 ,  G09G3/36 ,  G09G3/34 ,  G06F3/041

Abstract: A display device includes first electrodes, second electrodes, lines, and a controller, and includes a substrate, pixel electrodes, a display functional layer, and a common electrode stacked in this order. An insulating layer is between the common electrode and the first and second electrodes. The controller controls the pixel electrodes, the common electrode, the lines, and the first and second electrodes. During a display period, the pixel electrodes are supplied with a pixel signal through the lines, and the common electrode is supplied with a common signal. During a first sensing period, the lines are supplied with a first drive signal to generate a magnetic field. During a second sensing period, the lines are supplied with the first drive signal to generate the magnetic field, and an electromotive force corresponding to a distance between the lines and the first electrodes is generated in the first electrodes by the magnetic field.

公开(公告)号：US20190339811A1

公开(公告)日：2019-11-07

申请号：US16517086

申请日：2019-07-19

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/36 ,  G06F3/046 ,  G06F3/147

Abstract: An input detection device includes a plurality of drive electrodes, a first wiring that supplies a first voltage to the plurality of drive electrodes, and a second wiring that supplies a second voltage different from the first voltage, to the plurality of drive electrodes. Input detection through an electromagnetic induction method is performed through a magnetic field generated by supplying the first voltage and the second voltage to the plurality of drive electrodes, and the first voltage and the second voltage supplied to the first wiring and the second wiring are direct-current voltages.

公开(公告)号：US20190138143A1

公开(公告)日：2019-05-09

申请号：US16238099

申请日：2019-01-02

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044 ,  G06F3/046

Abstract: Provided is an input detection device capable of suppressing a change in detection sensitivity depending on a position. The input detection device includes: signal wirings having end portions, and arranged so as to extend in a first direction; drive electrodes each extending in a second direction crossing the first direction, and arranged in parallel to the first direction; a plurality of first switches arranged between the end portions of the drive electrodes and the signal wirings; a drive signal circuit supplying a drive signal to the end portions; and a selection circuit controlling the first switches in detecting proximity of an external object. When the proximity of the external object is detected based on a magnetic field from the external object, the number of the first switches electrically connecting the drive electrodes close to the end portions to the signal wirings is smaller than the number of the first switches electrically connecting the drive electrodes away from the end portions to the signal wirings.

公开(公告)号：US20190012016A1

公开(公告)日：2019-01-10

申请号：US16029704

申请日：2018-07-09

Applicant: Japan Display Inc.

Inventor： Hayato KURASAWA ,  Hiroshi MIZUHASHI ,  Tadayoshi KATSUTA

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

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/046 ,  G06F2203/04106 ,  G06F2203/04112 ,  G09G3/344 ,  G09G3/3696 ,  G09G2300/0426 ,  G09G2310/0202 ,  G09G2310/068 ,  G09G2310/08

Abstract: A display device includes a substrate, first electrodes, lines, pixel electrodes, a display functional layer, a common electrode, second electrodes, and a controller. The first electrodes are opposed to the second electrodes with a space therebetween, and an insulating layer is provided between the common electrode and the first and second electrodes. During the display periods, in response to a control signal from the controller, the pixel electrodes are supplied with a pixel signal through the lines, and the common electrode is supplied with a common signal. During the sensing period, in response to the control signal from the controller, the lines are supplied with a first drive signal to generate a magnetic field. The first electrodes are supplied with a second drive signal to generate electrostatic capacitance between themselves and the second electrodes in response to the control signal from the controller, synchronously or asynchronously with the display periods.

公开(公告)号：US20180052548A1

公开(公告)日：2018-02-22

申请号：US15679612

申请日：2017-08-17

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA ,  Hiroshi MIZUHASHI ,  Hayato KURASAWA

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

CPC classification number: G06F3/046 ,  G02F1/13338 ,  G02F1/1343 ,  G06F3/03545 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/047

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：US20180039373A1

公开(公告)日：2018-02-08

申请号：US15669325

申请日：2017-08-04

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/0354

CPC classification number: G06F3/0416 ,  G06F3/03545 ,  G06F3/0412 ,  G06F3/044 ,  G06F3/046 ,  G06F2203/04106

Abstract: The input detection device includes: first and second signal lines having ends and arranged to extend in a first direction; drive electrodes extending in a second direction intersecting the first direction and arranged in parallel to the first direction; a first switch connected between one end of each drive electrode and the first signal line; a second switch connected between the other end of each drive electrode and the second signal line; a driving signal circuit supplying a driving signal to ends of the first signal line and the second signal line; and a selection circuit controlling the first switch and the second switch when it is detected that an external object is close. A size of the first switch connected to be close to the end of the first signal line is made smaller than a size of the first switch connected to be farther than the close first switch from the end.

公开(公告)号：US20170371193A1

公开(公告)日：2017-12-28

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

CPC classification number: G02F1/13624 ,  G02F1/136286 ,  G02F1/1368 ,  G02F1/167 ,  G02F2001/136245 ,  G09G3/344 ,  G09G3/3614 ,  G09G3/3677 ,  G09G2300/0814 ,  G09G2300/0823 ,  G09G2300/0842 ,  G09G2330/021 ,  G09G2330/023 ,  H01L27/1214

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：US20170308233A1

公开(公告)日：2017-10-26

申请号：US15647458

申请日：2017-07-12

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA ,  Gen Koide

IPC: G06F3/041 ,  G02F1/1333 ,  H01L27/12 ,  H01L27/02 ,  H01L29/786 ,  G02F1/1343 ,  G02F1/1345 ,  G02F1/1362 ,  G06F3/044 ,  G09G3/36 ,  G02F1/1368 ,  G02F1/1335

CPC classification number: G06F3/0416 ,  G02F1/13338 ,  G02F1/133514 ,  G02F1/133528 ,  G02F1/134309 ,  G02F1/13452 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/136222 ,  G02F2201/123 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04102 ,  G09G3/3611 ,  G09G3/3674 ,  G09G3/3696 ,  G09G2300/0426 ,  G09G2300/0439 ,  G09G2300/08 ,  G09G2300/0876 ,  G09G2310/0281 ,  G09G2310/0291 ,  G09G2330/04 ,  H01L27/0296 ,  H01L27/1222 ,  H01L27/124 ,  H01L29/78666 ,  H01L29/78675

Abstract: An area of a region arranged on one side out of a display region in a direction in which scanning signal lines extend is reduced. A display apparatus includes: a partial circuit; a plurality of scanning signal lines; and a plurality of scanning signal connection wirings for connecting the partial circuit and each of the plurality of scanning signal lines. Each of the plurality of scanning signal lines extends in an X-axis direction, and is arranged with a pitch in a Y-axis direction. A plurality of ends respectively included in the plurality of scanning signal connection wirings are connected to the partial circuit, and are arranged in the Y-axis direction. A distance in the Y-axis direction between the respective centers of the two ends adjacent to each other is narrower than the pitch.

公开(公告)号：US20170285825A1

公开(公告)日：2017-10-05

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 ,  G06F3/044 ,  G09G3/36

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.