公开(公告)号：US20250006752A1

公开(公告)日：2025-01-02

申请号：US18886333

申请日：2024-09-16

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA

IPC: H01L27/146 ,  A61B5/1172 ,  G06V40/13

Abstract: A detection device includes: a substrate; photoelectric conversion elements provided to the substrate; transistors; and signal lines each of which is between adjacent photoelectric conversion elements. Each detection element includes one of the photoelectric conversion element and the transistors adjacent to the photoelectric conversion element. A first signal line among the signal lines is between the photoelectric conversion element of a first detection element and the photoelectric conversion element of a second detection element adjacent to one side of the first detection element and is coupled to the first detection element and the second detection element. A second signal line among the signal lines is between the photoelectric conversion element of the first detection element and the photoelectric conversion element of a third detection element adjacent to another side of the first detection element and is coupled to the first detection element and the third detection element.

公开(公告)号：US20240047475A1

公开(公告)日：2024-02-08

申请号：US18492319

申请日：2023-10-23

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA

IPC: H01L27/12 ,  G09G3/20 ,  G06F3/041 ,  G06F3/044

CPC classification number: H01L27/124 ,  G09G3/20 ,  G06F3/0412 ,  G06F3/044 ,  G06F3/04166 ,  G09G2300/0426 ,  G09G2300/0413 ,  G09G2300/0408 ,  G09G2310/0297 ,  G09G2310/0202

Abstract: A display device with touch detection function includes a display unit having a first and a second data lines, a first region outside the display unit, a second region on an opposite side of the first region sandwiching the display unit with the first region, a sensor unit including a sensor electrode, a first data signal supply line connected to the first data line and arranged in the first region, a second data signal supply line connected to the second data line and arranged in the second region, a dummy wiring arranged in the first region and not connected to the sensor electrode, and a sensor wiring arranged in the second region and connected to the sensor electrode. A line length of the dummy wiring in the first region is substantially same as a line length of the sensor wiring in the second region.

公开(公告)号：US20230238393A1

公开(公告)日：2023-07-27

申请号：US18097687

申请日：2023-01-17

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA

IPC: H01L27/12 ,  G09G3/20 ,  G06F3/041 ,  G06F3/044

CPC classification number: H01L27/124 ,  G09G3/20 ,  G06F3/0412 ,  G06F3/044 ,  G06F3/04166 ,  G09G2300/0413 ,  G09G2300/0408 ,  G09G2310/0297 ,  G09G2310/0202 ,  G09G2300/0426

Abstract: A display device with touch detection function includes a display unit having a first and a second data lines, a first region outside the display unit, a second region on an opposite side of the first region sandwiching the display unit with the first region, a sensor unit including a sensor electrode, a first data signal supply line connected to the first data line and arranged in the first region, a second data signal supply line connected to the second data line and arranged in the second region, a dummy wiring arranged in the first region and not connected to the sensor electrode, and a sensor wiring arranged in the second region and connected to the sensor electrode. A line length of the dummy wiring in the first region is substantially same as a line length of the sensor wiring in the second region.

公开(公告)号：US20230221594A1

公开(公告)日：2023-07-13

申请号：US18179544

申请日：2023-03-07

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA

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

CPC classification number: G02F1/13629 ,  G02F1/13452 ,  G02F1/133302 ,  G09G2300/0408 ,  G09G2300/0842 ,  G09G3/3655

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.

公开(公告)号：US20230178674A1

公开(公告)日：2023-06-08

申请号：US18103692

申请日：2023-01-31

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA ,  Yoshitaka OZEKI

IPC: H01L31/105 ,  H01L27/146

CPC classification number: H01L31/105 ,  H01L27/14623 ,  H01L27/14643 ,  G06V40/1318

Abstract: According to an aspect, a detection device includes a substrate and a plurality of photodiodes arranged on the substrate. Each of the photodiodes comprises a p-type semiconductor layer, an i-type semiconductor layer, and an n-type semiconductor layer stacked on the substrate. Each of the photodiodes includes a plurality of first regions in each of which the p-type semiconductor layer, the i-type semiconductor layer, and the n-type semiconductor layer are stacked so as to be directly in contact with one another, and a second region in which at least the p-type semiconductor layer and the i-type semiconductor layer are stacked so as to be separate from each other. Adjacent first regions included in the plurality of first regions are coupled together by at least the p-type semiconductor layer.

公开(公告)号：US20220413646A1

公开(公告)日：2022-12-29

申请号：US17896292

申请日：2022-08-26

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

Abstract: A touch detection device is provided and includes a plurality of driving electrodes for detecting an external proximity object in a detection area; a first driving circuit to drive the plurality of driving electrodes; and a second driving circuit to drive the plurality of driving electrodes, wherein the first driving circuit and the second driving circuit sandwich the detection area in a plan view.

公开(公告)号：US20220300139A1

公开(公告)日：2022-09-22

申请号：US17833954

申请日：2022-06-07

Applicant: Japan Display Inc.

Inventor： Hayato KURASAWA ,  Hiroshi MIZUHASHI ,  Fumitaka GOTOH ,  Gen KOIDE ,  Tadayoshi KATSUTA

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/046

Abstract: According to an aspect, a display apparatus includes: a substrate; a plurality of pixel electrodes; a plurality of detection electrodes arranged in a matrix in a display area of the substrate; a plurality of detection electrode lines coupled to the respective detection electrodes; a plurality of first electrodes provided in the same layer as the detection electrodes or the detection electrode lines and extending in a first direction; a plurality of switching elements coupled to the respective pixel electrodes; a plurality of signal lines coupled to the switching elements and extending in a second direction crossing 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 in a first sensing period in which an electromagnetic induction method is used.

公开(公告)号：US20220271074A1

公开(公告)日：2022-08-25

申请号：US17741600

申请日：2022-05-11

Applicant: Japan Display Inc.

Inventor： Tadayoshi KATSUTA

IPC: H01L27/146 ,  G06V40/13

Abstract: A detection device includes a sensor area in which a plurality of detection elements each comprising a photoelectric conversion element are arranged in a detection region, a drive circuit configured to supply a plurality of drive signals to the detection elements, and a detection circuit configured to process a detection signal output from each of the detection elements.

公开(公告)号：US20200257401A1

公开(公告)日：2020-08-13

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 ,  G02F1/1368 ,  G02F1/1362 ,  G02F1/1343 ,  G02F1/133

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：US20190391699A1

公开(公告)日：2019-12-26

申请号：US16563247

申请日：2019-09-06

Applicant: Japan Display Inc.

Inventor： Koji NOGUCHI ,  Tadayoshi KATSUTA ,  Yasuyuki TERANISHI

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

Abstract: A detection device includes a substrate, first electrodes, second electrodes, and a conductor. The substrate has a first surface and a second surface opposite to the first surface. The first electrodes are provided in a display area of the substrate and detect the position of an object being in contact with or in proximity to the first surface side of the substrate or pressure of the object being in contact with the first surface side. The second electrodes are provided along at least one side of the outer periphery of the display area. The conductor is provided on the second surface side of the substrate apart from the substrate and generates an electrostatic capacitor between the conductor and the second electrodes.