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.

公开(公告)号：US20200210001A1

公开(公告)日：2020-07-02

申请号：US16815806

申请日：2020-03-11

Applicant: Japan Display Inc.

Inventor： Takeya TAKEUCHI ,  Hiroshi MIZUHASHI ,  Tadayoshi KATSUTA ,  Takehiro SHIMA

IPC: G06F3/044 ,  G09G3/36 ,  G06F3/041 ,  G02F1/1333

Abstract: A display device with a touch sensor is provided and includes a substrate; pixel electrodes on the substrate; thin film transistors (TFTs) coupled to the pixel electrodes; touch sensor electrodes arranged opposite to the pixel electrodes; a gate buffer coupled to the TFTs; a first switch coupled to the gate buffer; first-L and first-H lines coupled to the first switch; a second line coupled to the gate buffer; and a drive control circuit applying a drive signal to the touch sensor electrodes, wherein a signal supplied to the TFTs is one of a pulse wave signal and a signal in which different three potentials are switched at given timings, wherein three potentials include a first potential supplied through the first-L line, a second potential supplied through the second line, and a third potential supplied through first-H line, wherein the first switch switches to couple the gate buffer with first-L line and first-H line in synchronization with the drive signal in which a first and second common potential are repeated, such that the TFT circuits are supplied with the pulse wave signal in which first and third potential are repeated, and wherein the third potential is greater than the first potential and less than the second potential.

公开(公告)号：US20190179460A1

公开(公告)日：2019-06-13

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 ,  G06F3/0354 ,  G06F3/047 ,  G02F1/1343

CPC classification number: G06F3/046 ,  G02F1/13338 ,  G02F1/133514 ,  G02F1/134336 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/133302 ,  G06F3/03545 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/047 ,  G06F2203/04106 ,  G06F2203/04108

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：US20190012017A1

公开(公告)日：2019-01-10

申请号：US16029709

申请日：2018-07-09

Applicant: Japan Display Inc.

Inventor： Hayato KURASAWA ,  Hiroshi MIZUHASHI ,  Tadayoshi KATSUTA

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

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：US20180307340A1

公开(公告)日：2018-10-25

申请号：US15959699

申请日：2018-04-23

Applicant: Japan Display Inc.

Inventor： Fumitaka GOTOH ,  Hiroshi MIZUHASHI ,  Kohei AZUMI

IPC: G06F3/041

CPC classification number: G06F3/041 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/046 ,  G06F2203/04103 ,  G06F2203/04108

Abstract: According to one embodiment, a touch detection device includes a touch panel including a transmitting coil and a receiving coil, the touch panel provided with a display function and a touch detection function, and a differential amplifier including two input terminals connected to first and second terminals of the receiving coil.

公开(公告)号：US20180292937A1

公开(公告)日：2018-10-11

申请号：US16006084

申请日：2018-06-12

Applicant: Japan Display Inc.

Inventor： Hiroshi MIZUHASHI ,  Toshiaki FUKUSHIMA ,  Gen KOIDE ,  Yoshiyuki KII

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

CPC classification number: G06F3/0412 ,  G02F1/13338 ,  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 control 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 control circuit unit is provided in the peripheral region, and includes a first circuit unit including a third line connection line, and a third line switch. 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. The first circuit unit is partially disposed between the drive element and the first substrate.

公开(公告)号：US20180074634A1

公开(公告)日：2018-03-15

申请号：US15819075

申请日：2017-11-21

Applicant: Japan Display Inc.

Inventor： Hayato KURASAWA ,  Hiroshi MIZUHASHI ,  Yoshitoshi KIDA

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

CPC classification number: G06F3/0412 ,  G02F1/13338 ,  G02F1/134309 ,  G02F2201/121 ,  G02F2201/123 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04107 ,  G06F2203/04108

Abstract: A sensor-equipped display device includes a display panel comprising a common electrode; a sensor comprising a plurality of detection electrodes extending in a first direction and arranged in a second direction crossing the first direction, each of the detection electrodes including a first electrode and a second electrode which are opposed to the common electrode, are divided and extend in the first direction, each of the first electrode and the second electrode including a gradient in width in the first direction in the detection electrode, the gradient in width of the first electrode and the gradient in width of the second electrode being inclined in opposite directions; and a controller configured to effect switching to either a first mode or a second mode, and to control driving of the common electrode and the detection electrodes, wherein the sensor further comprises a dummy electrode disposed between neighboring detection electrodes.

公开(公告)号：US20180006094A1

公开(公告)日：2018-01-04

申请号：US15617107

申请日：2017-06-08

Applicant: Japan Display Inc.

Inventor： Shuji HAYASHI ,  Hayato KURASAWA ,  Takayuki NAKANISHI ,  Mitsuhide MYAMOTO ,  Hiroshi MIZUHASHI ,  Yoshitoshi KIDA

IPC: H01L27/32 ,  G06F3/041 ,  G06F3/044

CPC classification number: H01L27/323 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04103 ,  G06F2203/04111 ,  H01L51/5225

Abstract: Disclosed is a display device including: a plurality of pixel electrodes; a plurality of opposing electrodes located over the plurality of pixel electrodes and arranged in a stripe shape; and an EL layer sandwiched between the plurality of pixel electrodes and the plurality of opposing electrodes. The plurality of opposing electrodes is electrically independent from one another. Each of the opposing electrodes may be electrically independent from the plurality of metal films. The plurality of metal films may be electrically floating.

公开(公告)号：US20170358631A1

公开(公告)日：2017-12-14

申请号：US15610754

申请日：2017-06-01

Applicant: Japan Display Inc.

Inventor： Mitsuhide MIYAMOTO ,  Hayato KURASAWA ,  Hiroshi MIZUHASHI ,  Takayuki NAKANISHI ,  Shuji HAYASHI ,  Yoshitoshi KIDA

IPC: H01L27/32 ,  G06F3/041 ,  G06F3/044 ,  H01L51/52

CPC classification number: H01L27/323 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04103 ,  H01L27/3246 ,  H01L51/5221 ,  H01L51/5253 ,  H01L51/5281

Abstract: A display device includes a plurality of first detection electrodes that are respectively disposed in a plurality of first areas, which are shaped in a stripe pattern and extend in the first direction, and extend in a first direction, an insulating layer that is disposed in a grid-like area, covers the first detection electrodes, and is placed on perimeters of pixel electrodes, and a plurality of second detection electrodes that are disposed on a sealing layer along a plurality of second areas and extend in a second direction, the second areas being included in the grid-like area, shaped in a stripe pattern, and extending in the second direction. The common electrodes are respectively disposed on a plurality of second banks and continue to the first direction.