公开(公告)号：US20250022892A1

公开(公告)日：2025-01-16

申请号：US18350031

申请日：2023-07-11

Applicant: Japan Display Inc.

Inventor： Xingle WANG ,  Chungkai CHEN ,  Naoki TAKADA

IPC: H01L27/144

Abstract: An optical sensor system includes a thin-film transistor (TFT) optical panel including an array of TFT pixels, a charge amplifier configured to temporarily store a charge received from a TFT pixel in the array of TFT pixels and generate a voltage based on the temporarily stored charge, an analog-to-digital converter to generate a digitized value based on the voltage, an accumulator configured to store the digitized value, and a controller circuit configured to cause the temporarily stored charge in the charge amplifier to be reset based on one of the voltage and the digitized value.

公开(公告)号：US20240319835A1

公开(公告)日：2024-09-26

申请号：US18735470

申请日：2024-06-06

Applicant: Japan Display Inc.

Inventor： Hiroshi YAMAGUCHI ,  Naoki TAKADA

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0446 ,  G06F3/0443 ,  G06F3/0448 ,  G06F3/04166

Abstract: A detection device includes a plurality of first detection electrodes disposed in a matrix of rows and columns in a detection region of a substrate, at least one second detection electrode disposed in a peripheral region outside the detection region, positioned adjacent to some of the plurality of the first detection electrodes, and provided along a side of the detection region, and a coordinate calculation circuit configured to calculate a detection position of a detection target body.

公开(公告)号：US20230280854A1

公开(公告)日：2023-09-07

申请号：US18195511

申请日：2023-05-10

Applicant: Japan Display Inc.

Inventor： Hayato KURASAWA ,  Toshihiko TANAKA ,  Naoki TAKADA ,  Chihiro TANAKA ,  Koji ISHIZAKI

IPC: G06F3/041 ,  G02F1/1343 ,  G02F1/1333 ,  G06F3/044 ,  G02F1/133

CPC classification number: G06F3/0412 ,  G02F1/1343 ,  G02F1/13338 ,  G06F3/04164 ,  G06F3/0445 ,  G06F3/0446 ,  G02F1/133

Abstract: A sensor device is provided and includes electrodes each including first parts arranged in a first direction and a second part connected to the first parts, the first parts each having a first mesh shape which is formed of first metal wires, and the second part having a second mesh shape which is formed of second metal wires, wherein a longitudinal direction of the second part is the first direction, and at least one of the first mash shape and the second mash shape has an intersection portion at which two of the first metal wires or two of the second metal wires intersect.

公开(公告)号：US20230072065A1

公开(公告)日：2023-03-09

申请号：US17988367

申请日：2022-11-16

Applicant: Japan Display Inc.

Inventor： Takayuki NAKANISHI ,  Naoki TAKADA ,  Fumitaka GOTOH ,  Shota HOSAKA

IPC: G06F3/044 ,  H03K17/96 ,  G06F3/041 ,  H03K17/955

Abstract: A proximity sensor is arranged with a first electrode input with a first signal, a second electrode input with a second signal different from the first signal, a third electrode arranged closer to the first electrode than the second electrode, and the second signal has a reverse phase of the first signal.

公开(公告)号：US20200081576A1

公开(公告)日：2020-03-12

申请号：US16567016

申请日：2019-09-11

Applicant: Japan Display Inc.

Inventor： Naoki TAKADA

IPC: G06F3/041 ,  G06F3/044

Abstract: According to one embodiment, a display device includes a plurality of first electrodes overlap a display area, extend in a first direction, and are arranged in a second direction, a plurality of second electrodes overlap the display area, extend in the second direction, and are arranged in the first direction, a plurality of conductive lines are provided along the first electrodes, and connected to the second electrodes, respectively, and a touch detection driver is configured to detect contact or approach of an object with respect to the display area. In a case where a distance between a conductive line and one of the first electrodes near the conductive line is less than a predetermined value, a shielding portion is formed in the second electrode.

公开(公告)号：US20180107302A1

公开(公告)日：2018-04-19

申请号：US15730277

申请日：2017-10-11

Applicant: Japan Display Inc.

Inventor： Naoki TAKADA

IPC: G06F3/044 ,  G06F3/041 ,  G02F1/1333 ,  G02F1/1343 ,  F21V8/00

CPC classification number: G06F3/044 ,  G01L1/14 ,  G01L1/142 ,  G02B6/0051 ,  G02B6/0053 ,  G02B6/0055 ,  G02B6/0056 ,  G02F1/13338 ,  G02F1/134363 ,  G02F2001/134372 ,  G06F3/0412 ,  G06F3/0414 ,  G06F3/0416 ,  G06F2203/04103 ,  G06F2203/04106 ,  G06F2203/04108

Abstract: According to an aspect, a display apparatus with a touch detection function, the display apparatus includes: an input surface; a touch detection electrode; a first electrode; a second electrode facing the first electrode across a dielectric layer; a touch detection controller configured to detect contact with or proximity to the input surface by a detection target object based on electrostatic capacitance between the first electrode and the touch detection electrode; and a force detection controller configured to detect a force applied to the input surface by the detection target object based on electrostatic capacitance between the first electrode and the second electrode. The force detection controller is configured to correct a force detection value based on a reference capacitance value between the first electrode and the second electrode at a reference temperature in a non-contact state of the detection target object with the input surface.

公开(公告)号：US20180095587A1

公开(公告)日：2018-04-05

申请号：US15722560

申请日：2017-10-02

Applicant: Japan Display Inc.

Inventor： Hayato KURASAWA ,  Naoki TAKADA ,  Shota HOSAKA ,  Toshihiko TANAKA ,  Chihiro TANAKA ,  Taiki KASAI

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04107 ,  G06F2203/04108 ,  G09G3/3648 ,  G09G3/3655

Abstract: A display apparatus includes a first substrate, a second substrate, a display functional layer, first electrodes, second electrodes, third electrodes, and a drive circuit. The second substrate faces the first substrate. The display functional layer is provided between the first substrate and the second substrate and used to display an image in a display area. The first electrodes are provided in the display area between the first substrate and the second substrate. The second electrodes are provided, facing the first electrodes, in the display area on the surface of the second substrate. The third electrodes are provided in a frame area on the outer side of the display area. The drive circuit supplies a first drive signal to at least one of the first electrodes and the second electrodes.

公开(公告)号：US20240419276A1

公开(公告)日：2024-12-19

申请号：US18821190

申请日：2024-08-30

Applicant: Japan Display Inc.

Inventor： Hayato KURASAWA ,  Toshihiko TANAKA ,  Naoki TAKADA ,  Chihiro TANAKA ,  Koji ISHIZAKI

IPC: G06F3/041 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/1343 ,  G06F3/044

Abstract: A sensor device is provided and includes electrodes each including first parts arranged in a first direction and a second part connected to the first parts, the first parts each having a first mesh shape which is formed of first metal wires, and the second part having a second mesh shape which is formed of second metal wires, wherein a longitudinal direction of the second part is the first direction, and at least one of the first mash shape and the second mash shape has an intersection portion at which two of the first metal wires or two of the second metal wires intersect.

公开(公告)号：US20240319810A1

公开(公告)日：2024-09-26

申请号：US18678390

申请日：2024-05-30

Applicant: JAPAN DISPLAY INC.

Inventor： Chihiro TANAKA ,  Naoki TAKADA ,  Toshihiko TANAKA ,  Hayato KURASAWA ,  Koji ISHIZAKI ,  Tatsuya WAKIMOTO ,  Masaki MIYATAKE

IPC: G06F3/041 ,  G02F1/1333 ,  G02F1/1339 ,  G02F1/1343 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G02F1/133345 ,  G02F1/13338 ,  G02F1/134309 ,  G06F3/04164 ,  G06F3/04184 ,  G06F3/0445 ,  G06F3/0446 ,  G02F1/1339 ,  G06F2203/04107 ,  G06F2203/04111

Abstract: According to one embodiment, a touch detection device includes first detection electrodes in a detection area, second detection electrodes in the detection area, extending to intersect the first detection electrodes, first control lines connected to the first detection electrodes, respectively, and provided in a non-detection area, and second control lines connected to the second detection electrodes, respectively, and provided in the non-detection area. The second control lines overlap the first control lines at a plurality of positions as seen in plan view, such that areas of overlapping portions in which the first control lines overlap the second control lines are substantially equalized.

公开(公告)号：US20240125647A1

公开(公告)日：2024-04-18

申请号：US17967898

申请日：2022-10-18

Applicant: Japan Display Inc.

Inventor： Naoki TAKADA ,  Xingle WANG ,  Chung-Kai CHEN

IPC: G01J1/44 ,  G01J1/46

CPC classification number: G01J1/44 ,  G01J1/46 ,  G01J2001/446 ,  G01J2001/448

Abstract: According to one embodiment, a sensor device comprises a sensor configured to output a sense signal, a value the sense signal changing over time based on incident light, a first reset circuit configured to set the value of the sense signal to a reset value when the value of the sense signal exceeds a threshold, a counter configured to count a first number of times of reset by the first reset circuit, and an arithmetic operation circuit configured to calculate an amount of incident light of a certain period based on the value of the sense signal, the reset value, and the first number of times of reset.