公开(公告)号：US20230326236A1

公开(公告)日：2023-10-12

申请号：US18296666

申请日：2023-04-06

Applicant: Japan Display Inc.

Inventor： Akihiko FUJISAWA ,  Takaaki KONO

IPC: G06V40/13

CPC classification number: G06V40/1318 ,  H10K39/32

Abstract: A detection device includes a sensor circuit provided with a first photodiode in a semiconductor layer, and a signal detector configured to acquire a detection value corresponding to a signal output from the sensor circuit. The signal detector includes a first detection circuit coupled to one end of the first photodiode, a first switch circuit configured to apply a power supply potential to another end of the first photodiode, and a second switch circuit configured to short both ends of the first photodiode.

公开(公告)号：US20220326811A1

公开(公告)日：2022-10-13

申请号：US17705894

申请日：2022-03-28

Applicant: Japan Display Inc.

Inventor： Takaaki KONO ,  Toshinori UEHARA

IPC: G06F3/044 ,  G06F3/041

Abstract: A detecting device includes a plurality of drive electrodes extending in a first direction and arrayed in a second direction, a detection electrode facing the drive electrodes in a direction orthogonal to the first direction and the second direction, a drive circuit configured to supply a drive signal to the drive electrodes, and a detector configured to detect proximity of an object to a detection region provided with the detection electrode based on an output from the detection electrode generated according to capacitance generated between the drive electrodes and the detection electrode due to the drive signal.

公开(公告)号：US20220229503A1

公开(公告)日：2022-07-21

申请号：US17574903

申请日：2022-01-13

Applicant: Japan Display Inc.

Inventor： Takaaki KONO ,  Yuto KAKINOKI ,  Makoto HAYASHI

IPC: G06F3/044 ,  G06F3/041

Abstract: An input detection system includes a plurality of drive electrodes and a plurality of detection electrodes aligned in a detection region, an input device including an LC circuit, a first electrode coupled to one end side of the LC circuit, and a second electrode coupled to another end side of the LC circuit, the input support device being disposed on the detection region, and a control circuit configured to detect the input support device based on detection signals that are output from the detection electrodes.

公开(公告)号：US20220413631A1

公开(公告)日：2022-12-29

申请号：US17850345

申请日：2022-06-27

Applicant: Japan Display Inc.

Inventor： Yuto KAKINOKI ,  Makoto HAYASHI ,  Takaaki KONO ,  Takayuki NAKANISHI

IPC: G06F3/0362 ,  G06F3/044

Abstract: An input detection system includes a detection device including a plurality of drive electrodes and a plurality of detection electrodes arrayed in a detection region, and a drive electrode scan circuit configured to supply a drive signal to the drive electrodes, and an input device including an LC circuit, a first electrode coupled to one end side of the LC circuit, and a second electrode coupled to the other end side of the LC circuit. The drive electrode scan circuit supplies the drive signal to at least equal to or more than one of the drive electrodes and supplies, to the others of the drive electrodes, an opposite phase signal as a drive signal having an opposite phase to a phase of the drive signal.

公开(公告)号：US20220342503A1

公开(公告)日：2022-10-27

申请号：US17723712

申请日：2022-04-19

Applicant: Japan Display Inc.

Inventor： Yuto KAKINOKI ,  Takaaki KONO ,  Makoto HAYASHI

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/0362 ,  G06F3/02 ,  G06F3/039

Abstract: An input detection system includes a detection device including a plurality of sensor electrodes arrayed in a detection region, an input support device including an LC circuit, a first electrode coupled to one end side of the LC circuit, and a second electrode coupled to another end side of the LC circuit, and a control circuit including a drive signal supply circuit supplying a drive signal to the sensor electrodes and an adjustment circuit coupled to the sensor electrodes. The adjustment circuit adjusts a circuit constant that is added to a capacitance between the sensor electrode and the first electrode or the second electrode facing the sensor electrode.

公开(公告)号：US20220147189A1

公开(公告)日：2022-05-12

申请号：US17497070

申请日：2021-10-08

Applicant: Japan Display Inc.

Inventor： Yuto KAKINOKI ,  Makoto HAYASHI ,  Takaaki KONO

IPC: G06F3/044 ,  G06F3/041

Abstract: An input detection system includes a plurality of electrodes arrayed in a detection region, and an input support device including an LC circuit, a first electrode coupled to the LC circuit and arranged so as to overlap with at least equal to or more than one of the electrodes, and a housing accommodating therein at least the LC circuit. The housing is a conductor, and one end side of the LC circuit is coupled to the housing through a coupling member or a capacitor and another end side of the LC circuit is coupled to the first electrode.

公开(公告)号：US20210311606A1

公开(公告)日：2021-10-07

申请号：US17344437

申请日：2021-06-10

Applicant: Japan Display Inc.

Inventor： Takaaki KONO ,  Yoshio OWAKI

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

Abstract: An object of the present disclosure is to provide a display device that enables the prevention of forming a ghost even though a water droplet is attached. A display device includes a display panel having a semiconductor device disposed at an end portion of an array substrate, and a translucent cover member covering the display panel. The display panel includes a plurality of drive electrodes that detect an external proximity object, and a conductive layer between the translucent cover member and the semiconductor device. At least a part of the conductive layer overlaps with at least a part of the semiconductor device in a planar view.

公开(公告)号：US20230169789A1

公开(公告)日：2023-06-01

申请号：US17993061

申请日：2022-11-23

Applicant: Japan Display Inc.

Inventor： Takaaki KONO

IPC: G06V40/13

CPC classification number: G06V40/1318

Abstract: A detection device includes a sensor area in which a plurality of detection elements including photoelectric conversion elements are arranged in a matrix having a row-column configuration within a detection region, and a detector configured to calculate a detection value corresponding to the detection elements based on a voltage generated in the detection elements.

公开(公告)号：US20230130956A1

公开(公告)日：2023-04-27

申请号：US17969025

申请日：2022-10-19

Applicant: Japan Display Inc.

Inventor： Akihiko FUJISAWA ,  Takaaki KONO

IPC: G06V40/13

Abstract: A detection device includes a plurality of detection elements arranged in a matrix having a row-column configuration in a detection area of a substrate, and an initialization circuit configured to apply an initialization potential to each of the detection elements. The initialization circuit has a first mode to apply a same initialization potential to all the detection elements and a second mode to apply different initialization potentials to the detection elements adjacent to each other.

公开(公告)号：US20220253267A1

公开(公告)日：2022-08-11

申请号：US17727076

申请日：2022-04-22

Applicant: Japan Display Inc.

Inventor： Takaaki KONO ,  Yoshio OWAKI ,  Makoto HAYASHI

IPC: G06F3/14 ,  G02F1/1334 ,  G02F1/1333 ,  H01L27/32 ,  G06F3/0488

Abstract: An object of the present disclosure is to provide a technique capable of displaying an appropriate display image corresponding to a position of an observer. A display device includes a detection electrode, a first screen, and a second screen on a side opposite to the first screen. A distance between the detection electrode and the first screen is longer than a distance between the detection electrode and the second screen, or a dielectric constant between the detection electrode and the first screen is lower than a dielectric constant between the detection electrode and the second screen, or the distance between the detection electrode and the first screen is longer than the distance between the detection electrode and the second screen and the dielectric constant between the detection electrode and the first screen is lower than the dielectric constant between the detection electrode and the second screen.