公开(公告)号：US11893195B2

公开(公告)日：2024-02-06

申请号：US17954636

申请日：2022-09-28

Applicant: Japan Display Inc.

Inventor： Fumihoru Nakano ,  Hiroshi Yamaguchi

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0446 ,  G06F3/0412 ,  G06F3/0445 ,  G06F2203/04107 ,  G06F2203/04111

Abstract: A detection device includes a shield layer provided with a shield electrode and a shield electrode connection wiring connected to the shield electrode, and a sensor layer located over the shield layer and provided with a sensor electrode and a sensor electrode connection wiring connected to the sensor electrode. The shield electrode has the same planar pattern as the sensor electrode and overlaps the sensor electrode. The shield electrode connection wiring has the same planar pattern as the sensor electrode connection wiring and overlaps the sensor electrode connection wiring.

公开(公告)号：US11886662B2

公开(公告)日：2024-01-30

申请号：US18104904

申请日：2023-02-02

Applicant: Japan Display Inc.

Inventor： Fumihoru Nakano

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166

Abstract: A sensing device includes a plurality of sensing electrodes arranged in a row direction and a column direction, a sensing circuit including a plurality of read-out circuits respectively connected to the plurality of sensing electrodes and a control circuit for controlling the plurality of read-out circuits, and an arithmetic circuit that arithmetically is configured to process a sensing signal output from the sensing circuit. The plurality of sensing circuits and the plurality of read-out circuits are connected one-to-one via wiring. The sensing circuit is configured to store a driving table storing multiple sampling frequencies different from each other. The control circuit is configured to read out the multiple sampling frequencies, drives simultaneously the plurality of read-out circuits at the multiple sampling frequencies, and output a plurality of output signals to the arithmetic circuit. The arithmetic circuit is configured to calculate the amount of noise using the multiple sampling frequencies.

公开(公告)号：US11694467B2

公开(公告)日：2023-07-04

申请号：US17725781

申请日：2022-04-21

Applicant: Japan Display Inc.

Inventor： Fumihoru Nakano

IPC: G06V40/13

CPC classification number: G06V40/1306

Abstract: A detecting device includes a plurality of first electrodes extending in a first direction and a plurality of second electrodes extending in a second direction intersecting the first direction, the first electrodes and the second electrodes being disposed facing each other with an insulating layer interposed therebetween, a first electrode selection circuit configured to supply a first drive signal or a second drive signal with a lower potential than that of the first drive signal to the first electrodes according to a supplied signal of a first code or a second code, and a detection circuit configured to detect capacitance generated between the first electrodes and the second electrodes due to the drive signal.

公开(公告)号：US11693509B2

公开(公告)日：2023-07-04

申请号：US17900327

申请日：2022-08-31

Applicant: Japan Display Inc.

Inventor： Fumihoru Nakano ,  Naoki Takada ,  Takayuki Nakanishi

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/047

CPC classification number: G06F3/04166 ,  G06F3/047 ,  G06F3/0416 ,  G06F3/0443 ,  G06F3/0446 ,  G06F2203/04108

Abstract: A sensing device includes a plurality of sensing electrodes arranged in the row and column directions to detect a close object, a plurality of wirings connected to each of the plurality of sensing electrodes, a sensing circuit connected to the plurality of wirings and detecting voltage values of a plurality of sensing electrodes in a plurality of sensing periods and a calculation circuit calculating a position of the close object in proximity using the voltage values detected by the sensing circuit. The sensing circuit uses a set of sensing electrodes adjacent to each other in row and column direction as a sensing unit, sets the plurality of sensing periods consecutively, and changes the sensing electrodes included in the sensing unit to be different by one row in the row direction or one column for each sensing periods.

公开(公告)号：US11681394B2

公开(公告)日：2023-06-20

申请号：US17723847

申请日：2022-04-19

Applicant: Japan Display Inc.

Inventor： Fumihoru Nakano

IPC: G06F3/041 ,  G06F21/32 ,  G06F3/044

CPC classification number: G06F3/04182 ,  G06F3/0445 ,  G06F3/0446 ,  G06F3/04166 ,  G06F21/32

Abstract: A detecting device includes a plurality of first electrodes extending in a first direction and a plurality of second electrodes extending in a second direction intersecting the first direction, the first electrodes and the second electrodes being disposed facing each other with an insulating layer interposed therebetween, a first electrode selection circuit configured to change a combination of a plurality of selected first electrodes for each of a plurality of periods obtained by dividing one frame period and supply a drive signal to the selected first electrodes, and a detection circuit configured to detect capacitance generated between the first electrodes and the second electrodes due to the drive signal. The first electrode selection circuit changes a frequency of the drive signal for each of the periods.

公开(公告)号：US11513651B1

公开(公告)日：2022-11-29

申请号：US17726834

申请日：2022-04-22

Applicant: Japan Display Inc.

Inventor： Fumihoru Nakano

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

Abstract: A detecting device includes a plurality of first electrodes extending in a first direction and a plurality of second electrodes extending in a second direction intersecting the first direction, the first electrodes and the second electrodes being disposed facing each other with an insulating layer interposed therebetween, a first electrode selection circuit configured to supply a drive signal to the first electrodes, and a detection circuit configured to detect capacitance generated between the first electrodes and the second electrodes due to the drive signal.