公开(公告)号：US12158674B2

公开(公告)日：2024-12-03

申请号：US18419768

申请日：2024-01-23

Applicant: Japan Display Inc.

Inventor： Masateru Morimoto ,  Teppei Yamada

IPC: G02F1/1362

Abstract: In a liquid crystal display device in which a first light shielding film extending in a first direction and an image signal line are formed on a TFT substrate, the image signal line includes: in a region that does not overlap the first light shielding film, a first portion extending at a first angle with respect to a second direction perpendicular to the first direction; and, in a region that overlaps the first light shielding film, a second portion extending at a second angle with respect to the second direction, a third portion extending in the second direction, and a fourth portion extending at a fourth angle with respect to the second direction, and the second angle and the fourth angle are larger than the first angle.

公开(公告)号：US11269469B2

公开(公告)日：2022-03-08

申请号：US17061959

申请日：2020-10-02

Applicant: Japan Display Inc.

Inventor： Akihiko Fujisawa ,  Teppei Yamada ,  Kaoru Ito

IPC: G06F3/044 ,  G06F3/041 ,  G06K9/00

Abstract: A technology that can make the touch detection results at corner portions proper is proposed. A display device includes a display panel, a sensor substrate formed on the display panel, and plural drive electrodes and plural detection electrodes extended in a direction so as to intersect with the plural drive electrodes on the sensor substrate. Among the plural drive electrodes, any of the lengths of N first drive electrodes (where N represents the number), which are continuously adjacent to one another, is shorter than any of the lengths of the other drive electrodes. An area where at least one drive electrode among the N first drive electrodes and at least one detection electrode overlap each other is larger than the area of an intersectional portion where any of the other drive electrodes and any of the other detection electrodes overlap each other.

公开(公告)号：US20180101076A1

公开(公告)日：2018-04-12

申请号：US15834388

申请日：2017-12-07

Applicant: Japan Display Inc.

Inventor： Motoharu MIYAMOTO ,  Teppei Yamada ,  Yasuhiro Kanaya

IPC: G02F1/1362 ,  H01L27/12 ,  G02F1/1368

CPC classification number: G02F1/136227 ,  G02F1/1362 ,  G02F1/136286 ,  G02F1/1368 ,  H01L27/1222 ,  H01L27/124 ,  H01L27/1251

Abstract: A display device is provided with a pixel and a dummy pixel including a gate line and a signal line. The dummy pixel includes the gate line and a dummy semiconductor layer crossing the gate line through an insulating layer. The dummy semiconductor layer is electrically separated from the dummy semiconductor layer of the dummy pixel adjacent in the Y direction dummy pixel. The dummy pixel further includes a dummy signal line extending in the Y direction. The dummy signal line is connected to the dummy semiconductor layer through a plurality of contact holes. The contact holes are arranged with the gate line interposed between them in plan view.

公开(公告)号：US09910331B2

公开(公告)日：2018-03-06

申请号：US14844464

申请日：2015-09-03

Applicant: Japan Display Inc.

Inventor： Motoharu Miyamoto ,  Teppei Yamada ,  Yasuhiro Kanaya

IPC: G02F1/1362 ,  H01L27/12 ,  G02F1/1368

CPC classification number: G02F1/136227 ,  G02F1/1362 ,  G02F1/136286 ,  G02F1/1368 ,  H01L27/1222 ,  H01L27/124 ,  H01L27/1251

Abstract: A display device is provided with a pixel and a dummy pixel including a gate line and a signal line. The dummy pixel includes the gate line and a dummy semiconductor layer crossing the gate line through an insulating layer. The dummy semiconductor layer is electrically separated from the dummy semiconductor layer of the dummy pixel adjacent in the Y direction dummy pixel. The dummy pixel further includes a dummy signal line extending in the Y direction. The dummy signal line is connected to the dummy semiconductor layer through a plurality of contact holes. The contact holes are arranged with the gate line interposed between them in plan view.

公开(公告)号：US12228813B2

公开(公告)日：2025-02-18

申请号：US18507638

申请日：2023-11-13

Applicant: Japan Display Inc.

Inventor： Hiroyuki Abe ,  Akihiko Saitoh ,  Teppei Yamada

IPC: G02F1/1333 ,  G02F1/133 ,  G06V40/13 ,  G09G3/36

Abstract: According to one embodiment, an optical sensor-equipped liquid crystal display device includes a display panel and a driver IC. The display panel includes a display area including pixels, a surrounding area surrounding the display area, peripheral circuits provided in the surrounding area, and an optical sensor outputting a detection signal in response to incident light. The peripheral circuit includes a shift register, and a gate switch group connected to the shift register and including a first gate switch and a second gate switch. The first gate switch is connected to a switching element for driving the pixel via a scanning line. The second gate switch is connected to a switching element included in a sensor circuit for driving the optical sensor via a scanning line for sensor.

公开(公告)号：US12142236B2

公开(公告)日：2024-11-12

申请号：US18456733

申请日：2023-08-28

Applicant: Japan Display Inc.

Inventor： Hiroyuki Abe ,  Akihiko Saitoh ,  Teppei Yamada

IPC: G09G3/36 ,  G06V40/13

Abstract: According to one embodiment, a liquid crystal display device with an optical sensor includes a display panel and a driver IC. The display panel includes first to third signal lines, an optical sensor including a photoelectric conversion element, and a sensor signal line that is connected to the optical sensor and transmits a detection signal to the driver IC. One first wiring line drawn from one terminal of the driver IC is connected to four switching elements. Three of the four switching elements are electrically connected to one of the first to third signal lines, respectively. One of the four switching elements, different from the three switching elements, is electrically connected to the sensor signal line.

公开(公告)号：US11687207B2

公开(公告)日：2023-06-27

申请号：US17672234

申请日：2022-02-15

Applicant: Japan Display Inc.

Inventor： Akihiko Fujisawa ,  Teppei Yamada ,  Kaoru Ito

IPC: G06F3/044 ,  G06F3/041 ,  G06V40/13 ,  G06V10/147

CPC classification number: G06F3/0446 ,  G06F3/0445 ,  G06F3/0448 ,  G06F3/04166 ,  G06V10/147 ,  G06V40/1306

Abstract: A display device is provided and includes display panel; sensor substrate formed on display panel; and M drive electrodes and detection electrodes extended in direction so as to intersect with M drive electrodes, wherein among M drive electrodes, any of lengths of N first drive electrodes, which are continuously adjacent to one another, is shorter than any of lengths of other N second drive electrodes which are continuously adjacent to one another, and number of detection electrodes which intersect with N first drive electrodes is larger than number of detection electrodes which intersect with N second drive electrodes.

公开(公告)号：US10386955B2

公开(公告)日：2019-08-20

申请号：US15373201

申请日：2016-12-08

Applicant: Japan Display Inc.

Inventor： Teppei Yamada ,  Masaki Murase ,  Yoshiyuki Ikehata ,  Daisuke Ito ,  Naoki Takada

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/1333 ,  G02F1/1362 ,  G02F1/133 ,  G09G3/20

Abstract: A liquid crystal display device includes a panel unit and a driving unit driving the panel unit. The driving unit includes as operation modes a first mode in which a detection operation of a first external object is performed in units of a divided region obtained by dividing an entire surface of a touch region of the panel unit and a second mode in which a detection operation of a second external object is performed on the entire surface of the touch region of the panel unit. The first mode is a mode detecting, in units of the divided region of the panel unit, a contact position of the first external object with each divided region, and the second mode is a mode detecting, on the entire surface of the panel unit, whether or not the second external object approaches the entire surface.

公开(公告)号：US10120253B2

公开(公告)日：2018-11-06

申请号：US15834388

申请日：2017-12-07

Applicant: Japan Display Inc.

Inventor： Motoharu Miyamoto ,  Teppei Yamada ,  Yasuhiro Kanaya

IPC: G02F1/1362 ,  H01L27/12 ,  G02F1/1368

Abstract: A display device is provided with a pixel and a dummy pixel including a gate line and a signal line. The dummy pixel includes the gate line and a dummy semiconductor layer crossing the gate line through an insulating layer. The dummy semiconductor layer is electrically separated from the dummy semiconductor layer of the dummy pixel adjacent in the Y direction dummy pixel. The dummy pixel further includes a dummy signal line extending in the Y direction. The dummy signal line is connected to the dummy semiconductor layer through a plurality of contact holes. The contact holes are arranged with the gate line interposed between them in plan view.