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公开(公告)号：US10386668B2
公开(公告)日：2019-08-20
申请号：US16299694
申请日：2019-03-12
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta , Hiroshi Mizuhashi
IPC: G06F3/041 , G02F1/1333 , G06F3/046 , G06F3/044 , G02F1/1343
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.
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公开(公告)号：US20190096347A1
公开(公告)日：2019-03-28
申请号：US16201311
申请日：2018-11-27
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta
CPC classification number: G09G3/3648 , G06F3/0418 , G06F3/044 , G09G3/3611 , G09G2300/0426 , G09G2310/08
Abstract: According to an aspect, a display device includes: a display region in which a plurality of pixels are arranged in a matrix; a plurality of signal lines that extend in a second direction in the display region; a vertical drive circuit that is coupled to first ends of the scanning lines and applies a vertical scanning pulse to the first ends to select each row of the pixels in the display region; a horizontal drive circuit that performs a display operation of supplying an image signal to each of the pixels in the row selected by the vertical drive circuit through the signal lines; and a plurality of switches that are coupled to second ends of the scanning lines respectively. Each of the switches supplies the same potential as that supplied to the first ends by the vertical drive circuit to the second end corresponding thereto in an idle period.
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公开(公告)号：US10228809B2
公开(公告)日：2019-03-12
申请号：US15448062
申请日：2017-03-02
Applicant: Japan Display Inc.
Inventor： Hiroshi Mizuhashi , Gen Koide , Tadayoshi Katsuta
IPC: G06F3/041 , G06F3/044 , G06F3/046 , G06F3/047 , G02F1/1333 , G02F1/1343 , G02F1/1362 , G06F3/0354 , G02F1/1335 , G02F1/1368
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.
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公开(公告)号：US10176777B2
公开(公告)日：2019-01-08
申请号：US15804052
申请日：2017-11-06
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta
Abstract: According to an aspect, a display device includes: a display region in which a plurality of pixels are arranged in a matrix; a plurality of signal lines that extend in a second direction in the display region; a vertical drive circuit that is coupled to first ends of the scanning lines and applies a vertical scanning pulse to the first ends to select each row of the pixels in the display region; a horizontal drive circuit that performs a display operation of supplying an image signal to each of the pixels in the row selected by the vertical drive circuit through the signal lines; and a plurality of switches that are coupled to second ends of the scanning lines respectively. Each of the switches supplies the same potential as that supplied to the first ends by the vertical drive circuit to the second end corresponding thereto in an idle period.
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公开(公告)号：US10168808B2
公开(公告)日：2019-01-01
申请号：US14982598
申请日：2015-12-29
Applicant: Japan Display Inc.
Inventor： Daisuke Ito , Hiroshi Mizuhashi , Makoto Hayashi , Yasuyuki Teranishi , Tadayoshi Katsuta
IPC: G06F3/041 , G06F3/044 , G02F1/133 , G02F1/1343 , G09G3/36 , G02F1/1333
Abstract: A liquid crystal display device includes: a liquid crystal element array including liquid crystal display elements arranged in a matrix form; scan lines arranged in each row of the liquid crystal element array and configured to supply scan signals to the liquid crystal display elements arranged in a corresponding row; signal lines arranged in each column of the liquid crystal element array and configured to supply image signals to the liquid crystal display elements arranged in a corresponding column; a plurality of driving electrodes arranged in the liquid crystal element array and supplied with driving signals for detecting an external proximity object; a first voltage line of a first voltage; a second voltage line of a second voltage; and a third voltage line of a third voltage.
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Patent Agency Ranking
公开(公告)号：US09921681B2
公开(公告)日：2018-03-20
申请号：US15172266
申请日：2016-06-03
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta , Hiroshi Mizuhashi , Daisuke Ito , Takafumi Suzuki
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/044 , G06F2203/04101
Abstract: A display device includes a plurality of pixel electrodes, a plurality of drive electrodes and a touch detection electrode. A display function layer is controlled by a voltage generated between the plurality of pixel electrodes and the plurality of drive electrodes in a display period, and touch detection is performed by detecting a voltage of the touch detection electrode in a touch detection period. In the display period, the plurality of drive electrodes are connected to a first wiring, and in the touch detection period, selected drive electrodes of the plurality of drive electrodes are connected to the first wiring, and the other non-selected drive electrodes of the plurality of drive electrodes are connected to a second wiring.
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公开(公告)号：US20180067356A1
公开(公告)日：2018-03-08
申请号：US15697545
申请日：2017-09-07
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta
IPC: G02F1/1335 , H01L27/32
CPC classification number: G02F1/133512 , G02F1/1345 , G02F1/136286 , G02F2001/136295 , G02F2201/44 , G02F2201/56 , G09G3/3648 , G09G2300/0426 , G09G2320/0223 , H01L27/3295 , H01L27/3297
Abstract: A light shielding layer overlapping with a peripheral region of a display device includes extension portions each extending along a Y direction, bent portions located between the extension portions, and another extension portion located between the bent portions. In a region overlapping with the another extension portion, an enable line (first potential supply line), which supplies a potential to a plurality of scanning signal lines via a driving circuit (first driving circuit), goes through a wiring layer (first wiring layer) and another wiring layer (second wiring layer) made of a material having resistivity lower than that of the wiring layer.
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公开(公告)号：US09766765B2
公开(公告)日：2017-09-19
申请号：US15341731
申请日：2016-11-02
Applicant: Japan Display Inc.
Inventor： Tadayoshi Katsuta
CPC classification number: G06F3/044 , G06F3/0412 , G06F3/0416 , G06F2203/04108
Abstract: A display device with a touch detecting function includes wiring for touch arranged in a peripheral area positioned on the outside of a display area, and a selection switch that selects one of drive electrodes to be coupled to the wiring for touch. A drive electrode scanning unit selects one of drive electrodes and includes a plurality of transfer circuits in the peripheral area. Part of the transfer circuits is a transfer circuit that performs output to the selection switch.
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99.发明授权公开(公告)号：US09727163B2
公开(公告)日：2017-08-08
申请号：US14598514
申请日：2015-01-16
Applicant: Japan Display Inc.
Inventor： Hiroshi Mizuhashi , Tadayoshi Katsuta , Kohei Azumi , Daisuke Ito
CPC classification number: G06F3/0416 , G06F3/0412 , G06F3/0418 , G06F3/044
Abstract: According to an aspect, a touch detection device includes drive electrodes, touch detection electrodes, a signal generation unit that generates direct-current signals having voltages different from one another, a first drive unit that selectively supplies one of the direct-current signals to the drive electrodes, an element, a second drive unit that selectively supplies one of the direct-current signals to one end of the element in synchronization with the first drive unit, and a detection unit that acquires output values from the touch detection electrodes and an output value from the element at the same time, and detects proximity or contact of a target object based on values obtained by correcting the output values from the touch detection electrodes using the output value from the element.
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公开(公告)号：US20170185221A1
公开(公告)日：2017-06-29
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 , G02F1/1362 , G02F1/1335 , G02F1/1368 , G06F3/044 , G02F1/1333
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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