公开(公告)号：US11615754B2

公开(公告)日：2023-03-28

申请号：US17838640

申请日：2022-06-13

Applicant: Japan Display Inc.

Inventor： Gen Koide

IPC: G09G3/34

Abstract: A display device includes: a first pixel transistor couples one electrode of holding capacitance to a first signal line; a second pixel transistor couples another electrode of the holding capacitance to a second signal line; a third pixel transistor couples the other electrode of the holding capacitance to a GND potential; and a driver that supplies a negative potential to the second signal line when the first signal line is supplied with a positive potential, supplies the GND potential to the second signal line when the first signal line is supplied with the GND potential, and supplies the positive potential to the second signal line when the first signal line is supplied with the negative potential. The first and second pixel transistors are on during a writing period and off during a holding period. The third pixel transistor is off during the writing period and on during the holding period.

公开(公告)号：US11555739B2

公开(公告)日：2023-01-17

申请号：US17496880

申请日：2021-10-08

Applicant: Japan Display Inc.

Inventor： Gen Koide

IPC: G01J1/44 ,  G06V40/13

Abstract: A detection device includes: detection elements; scan lines coupled to the detection elements and configured to supply drive signals to the detection elements; output signal lines coupled to the detection elements, detection signals from the detection elements being output to the output signal lines; a drive circuit configured to supply the drive signals to the detection elements; and a detection circuit configured to be supplied with the detection signals through the output signal lines. Each detection element includes a photoelectric conversion element, a source follower transistor configured to output a signal corresponding to an electrical charge of the photoelectric conversion element, and a read transistor configured to read the output signal of the source follower transistor and output the detection signal. During a reset period, an initial voltage obtained by superimposing a reference voltage on a threshold voltage of the source follower transistor is applied to the photoelectric conversion element.

公开(公告)号：US11348549B2

公开(公告)日：2022-05-31

申请号：US17155316

申请日：2021-01-22

Applicant: Japan Display Inc.

Inventor： Hirotaka Hayashi ,  Gen Koide

IPC: G09G3/30 ,  G09G3/36 ,  G02F1/1362 ,  G02F1/1368

Abstract: According to one embodiment, a display device includes a first scanning line, a second scanning line, a signal line, a capacitance line, and a pixel. The pixel includes a pixel electrode, an auxiliary electrode, a first switch, a second switch, and a third switch. The first switch is electrically connected to the signal line, the pixel electrode, and the first scanning line. The second switch is electrically connected to the auxiliary electrode, the first scanning line, and the capacitance line. The third switch is electrically connected to the signal line, the second scanning line, and the auxiliary electrode.

公开(公告)号：US11221526B2

公开(公告)日：2022-01-11

申请号：US16795587

申请日：2020-02-20

Applicant: Japan Display Inc.

Inventor： Gen Koide ,  Akihiro Ogawa

IPC: G02F1/1345 ,  G02F1/1339 ,  G02F1/1333 ,  G02F1/1368 ,  G02F1/1362

Abstract: According to one embodiment, a display device includes a first substrate and a second substrate. The first substrate includes a first area including a display area, a second area adjacent to the first area, and an organic insulating layer formed over the first area and the second area. The second substrate includes a substrate end located in a border between the first area and the second area, and overlaps the first area. The organic insulating layer includes a first groove portion surrounding the display area and formed in a circular shape along an outline of the first substrate. The first groove portion includes a first sidewall and a second sidewall. The first and second sidewalls intersect the substrate end in a plan view.

公开(公告)号：US11126052B2

公开(公告)日：2021-09-21

申请号：US16227078

申请日：2018-12-20

Applicant: Japan Display Inc.

Inventor： Yoshitaka Ozeki ,  Gen Koide ,  Nobutaka Ozaki

IPC: G02F1/1362 ,  G02F1/1368 ,  H01L29/786 ,  H01L29/66 ,  H01L27/32

Abstract: According to an aspect, an array substrate includes: a substrate; a light-shielding layer; a first gate electrode; a semiconductor layer; a signal line; and an electrode. A first surface of the substrate is provided with, in sequence, the light-shielding layer, the first gate electrode, the semiconductor layer, the signal line, and the electrode. The semiconductor layer includes a first impurity region electrically coupled to the electrode, a first channel region overlapping the first gate electrode, a second impurity region opposite to the first impurity region with respect to the first channel region, and a first lightly doped drain region between the first impurity region and the first channel region. The light-shielding layer has a first end and a second end opposite to each other. The first end overlaps the first channel region. The light-shielding layer overlaps a boundary between the first channel region and the first lightly doped drain region.

公开(公告)号：US20210173245A1

公开(公告)日：2021-06-10

申请号：US17181038

申请日：2021-02-22

Applicant: Japan Display Inc.

Inventor： Hayato Kurasawa ,  Hiroshi Mizuhashi ,  Fumitaka Gotoh ,  Gen Koide ,  Tadayoshi Katsuta

IPC: G02F1/1368 ,  G02F1/1362 ,  G02F1/1333 ,  G06F3/046

Abstract: According to an aspect, a display apparatus includes: a substrate; a plurality of pixel electrodes provided in a display area; a plurality of switching elements coupled to the respective pixel electrodes; a plurality of first electrodes provided between semiconductors of the switching elements and the substrate in a direction orthogonal to the substrate and extending in a first direction; a plurality of signal lines coupled to the switching elements and extending in a second direction intersecting the first direction; a coupling member provided in a peripheral area outside the display area and configured to couple ends of the first electrodes to each other; and a drive circuit configured to output a first drive signal to the first electrodes or the signal lines during a first sensing period in which an electromagnetic induction method is used.

公开(公告)号：US11029573B2

公开(公告)日：2021-06-08

申请号：US17037837

申请日：2020-09-30

Applicant: Japan Display Inc.

Inventor： Gen Koide ,  Hiroyuki Abe ,  Kazune Matsumura

IPC: G02F1/1362 ,  H01L27/12 ,  G02F1/1345

Abstract: According to an aspect, a display device includes: a substrate; a display region; a peripheral region; signal lines; terminals; wires coupling the terminals and the signal lines in the peripheral region; and first and second metal layers in different layers perpendicularly to the substrate and an insulating film in the peripheral region. The peripheral region includes: a first wiring region, in which the wires are electrically coupled to the signal lines; a second wiring region between the first wiring region and the terminals, and in which at least one or more wires pass through the first and second metal layers; and a third wiring region between the first and second wiring regions, and in which the wires extend in a second direction intersecting the first direction. The third wiring region includes contacts coupling the first and second metal layers, and a virtual line connecting the contacts has a curved shape.

公开(公告)号：US10955953B2

公开(公告)日：2021-03-23

申请号：US16859281

申请日：2020-04-27

Applicant: Japan Display Inc.

Inventor： Hiroshi Mizuhashi ,  Yasuyuki Teranishi ,  Toshiaki Fukushima ,  Daisuke Ito ,  Gen Koide ,  Tadayoshi Katsuta

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044 ,  G02F1/133 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/1345 ,  G02F1/1333

Abstract: A liquid crystal display device is provided and includes a liquid crystal element array having pixel electrodes and switching elements arranged in a matrix form; scanning lines arranged in each row of the liquid crystal element array and supply a scanning signal to switching elements; signal lines arranged in each column of the liquid crystal element array and supply an image signal to the pixel electrodes through switching elements; touch electrodes overlapping pixel electrodes and arranged in the column of the liquid crystal element array; signal line drive circuit arranged along one side of the liquid crystal element array parallel to the row of the liquid crystal element array and forms the image signal; first circuit arranged along the other side of the liquid crystal element array parallel to the row of the liquid crystal element array and is connected to the touch electrodes; and second circuit arranged along the one side of the liquid crystal element array and is connected to the touch electrodes, wherein a touch signal is supplied from the second circuit on the one side of the liquid crystal element array and the touch signal is supplied from the first circuit on the other side of the liquid crystal element array.

公开(公告)号：US10824019B2

公开(公告)日：2020-11-03

申请号：US16732849

申请日：2020-01-02

Applicant: JAPAN DISPLAY INC.

Inventor： Kenta Seki ,  Gen Koide ,  Hayato Kurasawa

IPC: G02F1/1337 ,  G02F1/1343 ,  G02F1/1333 ,  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：US10684712B2

公开(公告)日：2020-06-16

申请号：US15407511

申请日：2017-01-17

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta ,  Toshiaki Fukushima ,  Naoyuki Obinata ,  Gen Koide

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

Abstract: A display apparatus includes a first pad electrically connected to the drive circuit, a voltage supply line having one end electrically connected to the first pad, a common wire electrically connected to the voltage supply line and the second electrode, a transistor formed between the voltage supply line and the common wire, and a branch wire being a part of the voltage supply line, extending from a branch section, and electrically connected to the first pad. Then, the branch section is located closer to a center of the insulating substrate than the first pad in a plan view.