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公开(公告)号：US11287912B2
公开(公告)日：2022-03-29
申请号：US16944514
申请日：2020-07-31
Applicant: Japan Display Inc.
Inventor： Hayato Kurasawa , Hiroshi Mizuhashi , Tadayoshi Katsuta
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.
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公开(公告)号：US10795497B2
公开(公告)日：2020-10-06
申请号：US16364452
申请日：2019-03-26
Applicant: Japan Display Inc.
Inventor： Hiroshi Mizuhashi , Tadayoshi Katsuta , Yoshitoshi Kida
Abstract: According to an aspect, a display device with a touch detection function includes: a display region; a plurality of drive electrodes; a control device; a touch detection electrode that is opposed to the drive electrodes and forms capacitance with respect to the drive electrodes; power supply wiring arranged in a frame region positioned outside the display region; and a plurality of drive electrode scanning units that select the drive electrode to be coupled to the power supply wiring. When the drive electrode scanning unit simultaneously selects the drive electrodes of which number is equal to or larger than the number of pieces of the power supply wiring, the control device supplies a touch driving signal that is multiplexed based on a certain code to each of the selected drive electrodes.
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公开(公告)号：US10768756B2
公开(公告)日：2020-09-08
申请号：US16029704
申请日：2018-07-09
Applicant: Japan Display Inc.
Inventor： Hayato Kurasawa , Hiroshi Mizuhashi , Tadayoshi Katsuta
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.
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公开(公告)号：US10719164B2
公开(公告)日：2020-07-21
申请号：US15459845
申请日：2017-03-15
Applicant: Japan Display Inc.
Inventor： Takeya Takeuchi , Hiroshi Mizuhashi , Tadayoshi Katsuta , Takehiro Shima
IPC: G06F3/041 , G06F3/044 , G02F1/1333 , G02F1/1335 , G02F1/1362 , G02F1/1368
Abstract: Disclosed herein is a display device with a touch sensor, including: a plurality of display pixel electrodes; a common electrode configured to be provided opposed to the display pixel electrodes; a display function layer configured to have an image display function; a display control circuit configured to apply a display voltage between the display pixel electrodes and the common electrode based on an image signal and carry out image display control so that the display function of the display function layer be exerted; and a touch detection electrode configured to be provided opposed to the common electrode and form capacitance between the touch detection electrode and the common electrode.
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公开(公告)号：US10514795B2
公开(公告)日：2019-12-24
申请号：US16251190
申请日：2019-01-18
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta , Koji Noguchi , Daisuke Ito , Yasuyuki Teranishi
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.
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Patent Agency Ranking
公开(公告)号：US10409103B2
公开(公告)日：2019-09-10
申请号：US15697558
申请日：2017-09-07
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta
IPC: G02F1/1335 , H01L27/32 , G02F1/1345 , G02F1/1362
Abstract: A display device includes a display region, a peripheral region outside the display region, a control circuit, driving circuits, a clock line connecting the control circuit to one of the driving circuits and in which a first clock signal is supplied, and another clock line connecting the control circuit to the other of the driving circuits and in which a second clock signal is supplied. A light shielding layer includes extension portions each extending along a Y direction, and bent portions between the extension portions. A length of one of the extension portions is longer than a length of the other of the extension portions. In plan view, one of the bent portions overlaps with one of the clock lines, and the other of the bent portions is located between termination portions of the clock lines.
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公开(公告)号：US10402008B2
公开(公告)日：2019-09-03
申请号：US15665805
申请日：2017-08-01
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta
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.
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公开(公告)号：US10373577B2
公开(公告)日：2019-08-06
申请号：US15463403
申请日：2017-03-20
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta , Hiroshi Mizuhashi
Abstract: According to an aspect, a display device includes: a plurality of pixels aligned in row and column directions, each of the pixels including a drive element; a plurality of scan lines each coupled with the drive elements included in the pixels aligned in the row direction to transmit thereto a scan signal for selecting the pixels row by row; a plurality of signal lines each coupled with the drive elements included in the pixels aligned in the column direction to write display data; and a display control unit. The display control unit alternately repeats a display period and a stop period. In a latter term of the stop period, display control unit provides the display data written in the respective pixels in a row that has been selected during the display period immediately before the stop period, to the signal lines corresponding to the respective pixels.
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公开(公告)号：US20190220140A1
公开(公告)日：2019-07-18
申请号：US16364452
申请日：2019-03-26
Applicant: Japan Display Inc.
Inventor： Hiroshi Mizuhashi , Tadayoshi Katsuta , Yoshitoshi Kida
Abstract: According to an aspect, a display device with a touch detection function includes: a display region; a plurality of drive electrodes; a control device; a touch detection electrode that is opposed to the drive electrodes and forms capacitance with respect to the drive electrodes; power supply wiring arranged in a frame region positioned outside the display region; and a plurality of drive electrode scanning units that select the drive electrode to be coupled to the power supply wiring. When the drive electrode scanning unit simultaneously selects the drive electrodes of which number is equal to or larger than the number of pieces of the power supply wiring, the control device supplies a touch driving signal that is multiplexed based on a certain code to each of the selected drive electrodes.
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公开(公告)号：US20190155434A1
公开(公告)日：2019-05-23
申请号：US16251190
申请日：2019-01-18
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta , Koji Noguchi , Daisuke Ito , Yasuyuki Teranishi
CPC classification number: G06F3/0412 , G06F3/0416 , G06F3/044 , G06F2203/04107 , G06F2203/04108 , G09G3/3648 , G09G2354/00
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.
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