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公开(公告)号：US11274943B2
公开(公告)日：2022-03-15
申请号：US17342896
申请日：2021-06-09
Applicant: Japan Display Inc.
Inventor： Koji Noguchi , Koji Ishizaki , Hayato Kurasawa
IPC: G01D5/24 , G06F3/041 , G06F3/044 , G02F1/1333 , G06F3/0354
Abstract: A detection apparatus includes a substrate, a display area, a peripheral area, a plurality of electrodes, a plurality of terminals, a first wire, and a second wire. The display area is provided on the surface of the substrate. The peripheral area is provided outside the display area. The electrodes are provided to the display area. The terminals are provided in correspondence with the respective electrodes in the peripheral area. The first wire couples an electrode to a terminal. The second wire couples the electrode to the terminal to which the first wire is coupled.
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52.发明授权公开(公告)号：US11269462B2
公开(公告)日：2022-03-08
申请号：US16201475
申请日：2018-11-27
Applicant: Japan Display Inc.
Inventor： Koji Noguchi , Koji Ishizaki , Hayato Kurasawa
Abstract: According to one embodiment, an electrostatic capacitance-type sensor-equipped display device includes a display panel with a display surface which displays an image. The sensor includes a plurality of detection electrodes disposed in a matrix, the detection electrodes being mutually electrically independently provided above the display surface and being configured to detect a variation in electrostatic capacitance, and a plurality of lead lines provided above the display surface, connected to the detection electrodes in a one-to-one correspondence, and formed of a metal.
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公开(公告)号：US20210373695A1
公开(公告)日：2021-12-02
申请号：US17399216
申请日：2021-08-11
Applicant: Japan Display Inc.
Inventor： Koji Ishizaki , Koji Noguchi , Osamu Ishige
Abstract: A display device with a touch detection function including: a plurality of elements performing display operation; a plurality of touch detection electrodes arranged side by side to extend in one direction, and each outputting a detection signal based on a change in an electrostatic capacitance caused by an external proximity object; a conductive film insulated from or connected with high resistance to the touch detection electrodes, and disposed to cover the touch detection electrodes; and a touch detection circuit detecting the external proximity object by sampling the detection signal. The conductive film has a sheet resistance equal to or smaller than a predetermined resistance value, and has a time constant larger than a predetermined minimum time constant defined by sampling timings in the touch detection circuit.
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公开(公告)号：US11061506B2
公开(公告)日：2021-07-13
申请号：US16831295
申请日：2020-03-26
Applicant: Japan Display Inc.
Inventor： Koji Noguchi , Koji Ishizaki , Hayato Kurasawa
IPC: G06F3/041 , G06F3/044 , G01D5/24 , G02F1/1333 , G06F3/0354
Abstract: A detection apparatus includes a substrate, a display area, a peripheral area, a plurality of electrodes, a plurality of terminals, a first wire, and a second wire. The display area is provided on the surface of the substrate. The peripheral area is provided outside the display area. The electrodes are provided to the display area. The terminals are provided in correspondence with the respective electrodes in the peripheral area. The first wire couples an electrode to a terminal. The second wire couples the electrode to the terminal to which the first wire is coupled.
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公开(公告)号：US11016324B2
公开(公告)日：2021-05-25
申请号：US16710663
申请日：2019-12-11
Applicant: Japan Display Inc.
Inventor： Yosuke Nakamori , Ken Hirabayashi , Koji Noguchi
IPC: G02F1/1333 , G02F1/13357 , G02F1/1343
Abstract: A display device is provided and includes a liquid crystal panel comprising a pair of substrates, a liquid crystal layer between the substrates, a first electrode portion and a pair of polarizers that sandwich the substrates; a backlight device comprising a casing including a support frame, a bottom plate, a light guide, at least one optical sheet on the light guide, and a light source in the casing; and an adhesive member between the liquid crystal panel and the backlight device, wherein the support frame includes a step portion on which the optical sheet is placed, the adhesive member comprises a back surface fixed over the optical sheet and the support frame, and a top surface fixed to one of the polarizers, and a width of the adhesive member is as same as a width of the support frame.
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Patent Agency Ranking
公开(公告)号：US10983623B2
公开(公告)日：2021-04-20
申请号：US16738584
申请日：2020-01-09
Applicant: Japan Display Inc.
Inventor： Hiroshi Mizuhashi , Yoshitoshi Kida , Koji Noguchi
Abstract: A display panel with a touch detection function, in which display operation is less affected by touch detection operation, a method of driving the display panel with a touch detection function, a driving circuit, and an electronic unit having the display panel with a touch detection function are disclosed. The display panel with a touch detection function includes: one or more display elements; one or more drive electrodes; one or more touch detection electrodes; and a drive section selectively applying a DC drive signal or an AC drive signal to the drive electrodes.
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公开(公告)号：US20200341571A1
公开(公告)日：2020-10-29
申请号：US16927599
申请日：2020-07-13
Applicant: Japan Display Inc.
Inventor： Koji Noguchi , Daisuke Takama , Yoshitoshi Kida
IPC: G06F3/044 , G02F1/1333 , G02F1/1343 , G06F3/041
Abstract: A common electrode for a display, which is originally provided in a liquid crystal display element, is also used as one (drive electrode) of a pair of electrodes for a touch sensor, and the other (detection-electrode-for-the-sensor) of the pair of electrodes is newly formed. An existing common drive signal as a drive signal for display is used in common for a drive signal for the touch sensor. A capacitance is formed between the common electrode and the detection-electrode-for-the-sensor, and touch detection is performed by utilizing a change of this capacitance caused by a finger touch of a user. Thus, a display device with a touch sensor is also applicable to a mobile device in which electric potential of the user is inconstant in many cases. The newly-provided electrode is only the detection-electrode-for-the-sensor, and it is unnecessary to newly prepare a drive signal for the touch sensor.
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公开(公告)号：US20200183529A1
公开(公告)日：2020-06-11
申请号：US16791283
申请日：2020-02-14
Applicant: Japan Display Inc.
Inventor： Hiroshi Mizuhashi , Koji Noguchi
Abstract: According to an aspect, a touch detection apparatus includes: a plurality of drive electrodes, wherein at least one of the drive electrodes includes a plurality of subdivided electrodes; a plurality of first touch detection electrodes; a second touch detection electrode; a first shift register circuit in which a plurality of first shift signal output circuits are sequentially coupled to one another; a second shift register circuit in which a plurality of second shift signal output circuits are sequentially coupled to one another; and a selection circuit that supplies a signal of the first shift register circuit to the drive electrode in a first mode, and supplies a signal of the second shift register circuit to the subdivided electrode in a second mode.
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公开(公告)号：US10606385B2
公开(公告)日：2020-03-31
申请号：US15664603
申请日：2017-07-31
Applicant: Japan Display Inc.
Inventor： Toshiaki Fukushima , Koji Noguchi , Hiroshi Mizuhashi , Gen Koide , Tadayoshi Katsuta
Abstract: A display device provided with a touch sensor, includes a plurality of common electrodes, a plurality of display elements arranged in a matrix, a plurality of gate lines electrically connected to the display elements and arranged in a row direction, and a plurality of source lines electrically connected to the display elements and arranged in a column direction. The plurality of common electrodes for display are also used for the touch sensor. An image display operation of the plurality of common electrodes for display and a driving operation of the plurality of common electrodes for the touch sensor are performed in a time sharing manner, and all of the gate lines and the source lines are caused to be in a floating state in the driving operation of the common electrodes for the touch sensor.
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公开(公告)号：US10572090B2
公开(公告)日：2020-02-25
申请号：US16236765
申请日：2018-12-31
Applicant: Japan Display Inc.
Inventor： Hiroshi Mizuhashi , Yoshitoshi Kida , Koji Noguchi
Abstract: A display panel with a touch detection function, in which display operation is less affected by touch detection operation, a method of driving the display panel with a touch detection function, a driving circuit, and an electronic unit having the display panel with a touch detection function are disclosed. The display panel with a touch detection function includes: one or more display elements; one or more drive electrodes; one or more touch detection electrodes; and a drive section selectively applying a DC drive signal or an AC drive signal to the drive electrodes.
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