公开(公告)号：US20230251738A1

公开(公告)日：2023-08-10

申请号：US18104904

申请日：2023-02-02

Applicant: Japan Display Inc.

Inventor： Fumihoru NAKANO

IPC: G06F3/041

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：US20220365627A1

公开(公告)日：2022-11-17

申请号：US17726834

申请日：2022-04-22

Applicant: Japan Display Inc.

Inventor： Fumihoru NAKANO

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

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.

公开(公告)号：US20220350459A1

公开(公告)日：2022-11-03

申请号：US17723847

申请日：2022-04-19

Applicant: Japan Display Inc.

Inventor： Fumihoru NAKANO

IPC: G06F3/041 ,  G06F3/044 ,  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.