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：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.

公开(公告)号：US10606428B2

公开(公告)日：2020-03-31

申请号：US16255355

申请日：2019-01-23

Applicant: Japan Display Inc.

Inventor： Toshiaki Fukushima

IPC: G06F3/044 ,  G06F3/041

Abstract: According to an aspect, a display device with a touch detection function includes a controller, touch wiring that supplies a touch drive signal to drive electrodes, and a plurality of switch groups that are provided for each of the drive electrodes, each of the plurality of switch groups having selection switches. The plurality of switch groups select a drive electrode to be coupled to a touch wiring based on a selection signal from the controller. The selection switches for each of the plurality of switch groups are coupled in parallel with each other between a corresponding drive electrode and the touch wiring, and for each of the drive electrodes, all of the selection switches operate in accordance with the selection signal, couple the corresponding drive electrodes and the touch wiring, and apply the touch drive signal to the corresponding drive electrodes.

公开(公告)号：US10572050B2

公开(公告)日：2020-02-25

申请号：US16149190

申请日：2018-10-02

Applicant: Japan Display Inc.

Inventor： Hiroshi Mizuhashi ,  Tadayoshi Katsuta ,  Gen Koide ,  Toshiaki Fukushima

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

Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The circuit unit is provided in the peripheral region, and is electrically connected to one of the second lines and one of the third lines. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. At least a portion of the circuit unit is disposed between the drive element and the first substrate.

公开(公告)号：US20190155421A1

公开(公告)日：2019-05-23

申请号：US16255355

申请日：2019-01-23

Applicant: Japan Display Inc.

Inventor： Toshiaki Fukushima

IPC: G06F3/044 ,  G06F3/041

Abstract: According to an aspect, a display device with a touch detection function includes a controller, touch wiring that supplies a touch drive signal to drive electrodes, and a plurality of switch groups that are provided for each of the drive electrodes, each of the plurality of switch groups having selection switches. The plurality of switch groups select a drive electrode to be coupled to a touch wiring based on a selection signal from the controller. The selection switches for each of the plurality of switch groups are coupled in parallel with each other between a corresponding drive electrode and the touch wiring, and for each of the drive electrodes, all of the selection switches operate in accordance with the selection signal, couple the corresponding drive electrodes and the touch wiring, and apply the touch drive signal to the corresponding drive electrodes.

公开(公告)号：US10269314B2

公开(公告)日：2019-04-23

申请号：US15719037

申请日：2017-09-28

Applicant: Japan Display Inc.

Inventor： Gen Koide ,  Toshiaki Fukushima

IPC: G09G3/36 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368

Abstract: To reduce the area of a portion where a plurality of transistors are provided in a region around a display region and to reduce the area of the region around the display region, a display device includes a first transistor and a second transistor each as a transistor, and the transistor includes a connection wiring that electrically connects a semiconductor film and a source-drain electrode to each other via an opening portion provided in an insulating film. The first transistor and the second transistor are adjacent to each other, and there is a clearance between an end portion, on the side of the second transistor, of the connection wiring in the first transistor and an end portion, on the side of the second transistor, of the opening portion in the first transistor.

公开(公告)号：US09891479B2

公开(公告)日：2018-02-13

申请号：US14602604

申请日：2015-01-22

Applicant: Japan Display Inc.

Inventor： Seiji Uejima ,  Hidemasa Yamaguchi ,  Yoshitaka Ozeki ,  Takeyuki Tsuruma ,  Kenta Seki ,  Toshiaki Fukushima

IPC: G02F1/1343

CPC classification number: G02F1/134309 ,  G02F2001/134372

Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes a first line, a second line, a switching element, a common electrode, an insulating film disposed on the common electrode, a pixel electrode connected with the switching element and opposed to the common electrode with the insulating film interposed therebetween, and a first alignment film covering the pixel electrode. The second substrate includes a second alignment film. And the pixel electrode includes one main pixel electrode extending in a belt shape in a pixel area defined by the first line and the second line.

公开(公告)号：US09824645B2

公开(公告)日：2017-11-21

申请号：US14708856

申请日：2015-05-11

Applicant: Japan Display Inc.

Inventor： Hayato Kurasawa ,  Hiroshi Mizuhashi ,  Toshiaki Fukushima

IPC: G02F1/1368 ,  G09G3/36 ,  G02F1/1343 ,  G02F1/1335 ,  G02F1/1333

CPC classification number: G09G3/3607 ,  G02F1/13338 ,  G02F1/133514 ,  G02F1/134336 ,  G02F1/1368 ,  G09G3/36 ,  G09G2300/0426 ,  G09G2320/0209

Abstract: According to one embodiment, a display device includes first, second, and third interconnects, switch elements, pixel electrodes, a display layer, first, and second color filters, and a controller. The first interconnects extend in a first direction and are arranged in a second direction. The second interconnects extend in the second direction and are arranged in the first direction. The switch elements are electrically connected to the first and second interconnects. The pixel electrodes are electrically connected to the switch elements. The third interconnects extend in the second direction and are arranged in the first direction. The display layer performs an optical operation of light emission or a change of an optical characteristic. The first color filters are of a first color. The second color filters of a second color have a higher visibility than the first color. The controller is electrically connected to the first, second, and third interconnects.

公开(公告)号：US11093062B2

公开(公告)日：2021-08-17

申请号：US16815392

申请日：2020-03-11

Applicant: Japan Display Inc.

Inventor： Toshiaki Fukushima

IPC: G06F3/041 ,  G06F3/044

Abstract: A display device with a touch detection function is provided and including a display area including pixels arranged in a matrix on a substrate; drive electrodes disposed to face at least one of the pixels; an electro-optical element configured to display an image in the display area; first wiring that is routed in a frame area located outside the display area and configured to supply an alternating current drive signal to the drive electrodes; and second wiring configured to supply a direct current drive voltage, wherein the second wiring is disposed closer to the display area than the first wiring.

公开(公告)号：US10310663B2

公开(公告)日：2019-06-04

申请号：US15683389

申请日：2017-08-22

Applicant: Japan Display Inc.

Inventor： Toshiaki Fukushima

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/047 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362

Abstract: According to an aspect, a display apparatus capable of preventing influence on a display by wires supplied with detection drive signals in a self-capacitive detection operation. The display apparatus includes: a plurality of gate lines; a plurality of first wires arranged in a frame region surrounding a display region and each configured to supply a detection drive signal to the respective gate lines in a detection operation period and be supplied with a first signal having a predetermined first voltage in a display operation period different from the detection operation period; and a shield that is a conductive member overlapping at least one of the first wires when viewed in a direction perpendicular to the display region and is supplied with a second signal having a predetermined second voltage in the display operation period.