公开(公告)号：US11249352B2

公开(公告)日：2022-02-15

申请号：US17030945

申请日：2020-09-24

Applicant: JAPAN DISPLAY INC.

Inventor： Kenta Seki ,  Gen Koide ,  Hayato Kurasawa

IPC: G02F1/1343 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/1362

Abstract: According to one embodiment, a display device comprises image signal lines, scanning signal lines, pixels, a display area, pixel electrodes, and common electrodes. The common electrodes are configured to detect an object and to display an image in the display area. The common electrodes include first and second common electrodes which are arranged in a first direction. A first slit is provided between the first and second common electrodes. The first and second common electrodes are supplied a signal different from each other. A second slit is provided in the first common electrode. Each of the first slit and the second slit overlaps one of the image signal lines and extends in an extension direction in which the image signal line extends.

公开(公告)号：US20210389632A1

公开(公告)日：2021-12-16

申请号：US17459439

申请日：2021-08-27

Applicant: Japan Display Inc.

Inventor： Takao Atarashiya ,  Hayato Kurasawa

IPC: G02F1/1343 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1368

Abstract: A liquid crystal includes first and second substrates, the first substrate including intersecting data lines and scan lines. A liquid crystal layer is sandwiched therebetween. Also, a plurality of sub-pixels districted by data lines and gate lines, and arranged along the long-axis and the short-axis directions in a matrix. A pixel electrode in the sub-pixels includes a central portion. A common electrode including linear electrodes arranged along the data lines and disposed with gaps therebetween. Sub-pixels are bent at the center portion, such that the linear electrodes or the gaps in both sides of the sub-pixels are inclined in opposite directions with respect to the long-axis direction. At least one of the linear electrodes or at least one of the gaps has a bent portion at the central portion of the respective pixel electrode. The common electrode is provided on liquid crystal layer side over the pixel electrode.

公开(公告)号：US11113498B2

公开(公告)日：2021-09-07

申请号：US16293250

申请日：2019-03-05

Applicant: Japan Display Inc.

Inventor： Yoshitaka Ozeki ,  Hayato Kurasawa ,  Toshinori Uehara ,  Koshiro Moriguchi

IPC: H01L27/12 ,  G06K9/00 ,  H01L29/423 ,  G06F3/041

Abstract: According to one embodiment, a detection device includes a substrate, a drive electrode provided on the substrate, a detection electrode provided on the substrate and capacitively coupling with the drive electrode, and a first thin film transistor and a second thin film transistor, electrically connected to the drive electrode, and the first thin film transistor has a withstand voltage higher than a withstand voltage of the second thin film transistor.

公开(公告)号：US10884543B2

公开(公告)日：2021-01-05

申请号：US16843523

申请日：2020-04-08

Applicant: Japan Display Inc.

Inventor： Masanobu Ikeda ,  Hayato Kurasawa

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

Abstract: A display device with a touch detection function is provided and includes a display unit that includes a plurality of pixel electrodes, and a plurality of counter electrodes facing the pixel electrodes, and that displays an image at a resolution in accordance with the number of the pixel electrodes; and a controller that alternately executes, in one frame period, a display operation in a display period by driving the pixel electrodes and the counter electrodes, and a touch detection operation in a touch period by driving the counter electrodes, wherein the controller that changes a ratio between the display period and the touch period in the one frame period in accordance with a resolution of an image to be displayed in the one frame period.

公开(公告)号：US10788932B2

公开(公告)日：2020-09-29

申请号：US15432257

申请日：2017-02-14

Applicant: Japan Display Inc.

Inventor： Shinya Iuchi ,  Masahiro Togashi ,  Hayato Kurasawa ,  Michio Yamamoto ,  Tatsunori Nagai

IPC: G06F3/041 ,  G06F3/044

Abstract: According to an aspect, a touch detection device includes: first detectors that output first signal values corresponding to contact of detection target objects with first regions; at least one second detector that outputs at least one second signal value corresponding to at least one first force applied by the detection target objects to press at least one second region corresponding to the first regions; and a controller that calculates at least one third signal value corresponding to at least one second force applied by at least one of the detection target objects to the at least one second region, based on the first signal values, the at least one second signal value, and at least one reference value corresponding to a third force per at least one of the first signal values.

公开(公告)号：US10649582B2

公开(公告)日：2020-05-12

申请号：US15963670

申请日：2018-04-26

Applicant: Japan Display Inc.

Inventor： Toshinori Uehara ,  Hayato Kurasawa

IPC: G06F3/041 ,  G06F3/044

Abstract: A detection apparatus includes a first substrate, a first electrode, a plurality of second electrodes, a detection controller, and a second electrode controller. The first electrode is disposed on the first substrate. The second electrodes have an area smaller than the area of the first electrode and overlap the first electrode. The detection controller is coupled to the first electrode and detects a detection signal corresponding to a capacitance change in the first electrode. The second electrode controller supplies, to some of second electrodes in the second electrodes, a guard signal for suppressing a capacitance change in overlapping areas of the first electrode overlapping the respective second electrodes.

公开(公告)号：US10606429B2

公开(公告)日：2020-03-31

申请号：US16421129

申请日：2019-05-23

Applicant: Japan Display Inc.

Inventor： Hayato Kurasawa ,  Koji Noguchi

IPC: G06F3/044 ,  G06F3/041

Abstract: A display device includes a substrate, a plurality of pixel electrodes, a switching element, and a first electrode. The substrate has a first surface and a second surface opposite to the first surface. The pixel electrodes are provided to the first surface side and supplied with a pixel signal for displaying an image. The switching element is provided to the first surface side and coupled to the pixel electrodes. The first electrode is provided to a layer closer to the first surface than the switching element in a manner facing the switching element in a direction perpendicular to the first surface of the substrate and having lower light transmittance than that of the substrate.

公开(公告)号：US10585523B2

公开(公告)日：2020-03-10

申请号：US15999440

申请日：2018-08-20

Applicant: Japan Display Inc.

Inventor： Hayato Kurasawa ,  Yasuyuki Teranishi

IPC: G06F3/041 ,  G06F3/044

Abstract: According to an aspect, a detection apparatus includes a touch detection surface having two dimensions, a touch detection unit and a force detection unit. The touch detection unit includes: first electrodes extending along a first direction; and a first signal output unit configured to output a first signal indicating a position of the touch operation in a second direction. Each first electrode includes divided electrodes provided in the first direction. First detection regions each provided by bundling the divided electrodes arranged in the second direction are set. The force detection unit includes a base electrode configured such that distances between the base electrode and the respective divided electrodes change when the first electrodes bend according to the applied force applied. The force signal is a signal based on electrostatic capacitances obtained by individual detection.

公开(公告)号：US10572062B2

公开(公告)日：2020-02-25

申请号：US16385072

申请日：2019-04-16

Applicant: Japan Display Inc.

Inventor： Hayato Kurasawa ,  Hiroshi Mizuhashi

IPC: G06F3/041 ,  G02F1/1343 ,  G02F1/1362 ,  G06F3/044 ,  G02F1/1333

Abstract: According to one embodiment, a display device includes a plurality of gate lines, a plurality of data lines intersecting with the gate lines, a plurality of pixel electrodes, and a sensor drive controller which includes a plurality of common electrodes facing the pixel electrodes and detects a touch by controlling the common electrodes. The sensor drive controller selects at least one of the common electrodes, and supplies a sensor signal to the selected common electrode to set the selected common electrode to a sensing state. The sensor drive controller sets at least the common electrode adjacent to the common electrode set to the sensing state to a guard state and sets the other common electrodes to a floating state.

公开(公告)号：US10572047B2

公开(公告)日：2020-02-25

申请号：US15848073

申请日：2017-12-20

Applicant: Japan Display Inc.

Inventor： Hiroshi Mizuhashi ,  Hayato Kurasawa ,  Yoshitoshi Kida ,  Toshinori Uehara ,  Takayuki Nakanishi

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/047

Abstract: A display device comprises a first power supply line supplying a first potential, a second power supply line supplying a second potential, a third power supply line supplying a touch driving signal, and a display unit including a plurality of sub-pixels. The display unit comprises a plurality of first electrodes respectively provided in the plurality of sub-pixels and electrically connected to the first power supply line, a second electrode provided to be common among the plurality of sub-pixels and electrically connected to the second power supply line, a light emitting layer provided between the first electrode and the second electrode, a plurality of third electrodes electrically connected to the third power supply line, and a signal control circuit supplying a signal synchronized with a touch driving signal to the second electrode in a period in which a touch driving signal is supplied to the plurality of third electrodes.