公开(公告)号：US20180321785A1

公开(公告)日：2018-11-08

申请号：US15773316

申请日：2016-09-09

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MUTSUMI HAMAGUCHI ,  MASAYUKI MIYAMOTO ,  SHINJI SHINJO

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

CPC classification number: G06F3/0416 ,  G02F1/13338 ,  G02F2201/121 ,  G06F3/041 ,  G06F3/044

Abstract: Capacitance distribution is detected on a touch panel with a simple configuration. Drive sense lines (DS0 to DS(M−1)) are driven at a first potential on the basis of a code sequence. Subsequently, each of drive sense switch elements (DST22 and DST22′) corresponding to a hand-touching region (22) is made to turn off, and a linear sum signal based on an electric charge of each of detection electrodes (E) is read.

公开(公告)号：US20180329548A1

公开(公告)日：2018-11-15

申请号：US15774701

申请日：2016-09-08

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MUTSUMI HAMAGUCHI ,  MASAYUKI MIYAMOTO ,  SHINJI SHINJO

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/20

CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G06F3/0418 ,  G06F3/044 ,  G09G3/20 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2354/00

Abstract: To acquire touch position data with a good SN ratio without affecting a display action of a display element, a touch panel includes a non-drive region and a drive region. The non-drive region moves so as to correspond to one of a plurality of scanning signal lines selected and driven in order in a display period included in each frame of a display element. The drive region represents a region except for the non-drive region. A touch panel controller drives a signal line corresponding to the drive region and stops driving a signal line corresponding to the non-drive region.

公开(公告)号：US20180275793A1

公开(公告)日：2018-09-27

申请号：US15764430

申请日：2016-09-08

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MUTSUMI HAMAGUCHI ,  MASAYUKI MIYAMOTO ,  SHINJI SHINJO

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: Capacitance distribution on a touch panel is detected with a simple configuration. A drive switch element between each of electrodes and a corresponding drive line is made to turn on and the drive line is driven on the basis of a code sequence. A sense switch element between each of the electrodes and a corresponding sense line is made to turn on and a linear sum signal of each of the electrodes is read along the sense line.

公开(公告)号：US20180329533A1

公开(公告)日：2018-11-15

申请号：US15774244

申请日：2016-08-03

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MUTSUMI HAMAGUCHI ,  MASAYUKI MIYAMOTO ,  SHINJI SHINJO

IPC: G06F3/044 ,  G06F3/0354

CPC classification number: G06F3/044 ,  G06F3/03545 ,  G06F3/0383 ,  G06F3/0416

Abstract: Capacitance distribution between each of detection electrodes and a stylus pen on a touch panel is detected with a simple configuration. A read step and a detection step are included. In the read step, a switch element selected among a plurality of drive sense switch elements (DST) between detection electrodes (E) and drive sense lines (DS) aligned in an X-axis direction based on a code sequence via control lines (DSS) aligned in a Y-axis direction is made to turn on, and a linear sum signal is read from each of the detection electrodes (E). In the detection step, a capacitance is detected.

公开(公告)号：US20180246593A1

公开(公告)日：2018-08-30

申请号：US15755552

申请日：2016-06-21

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MUTSUMI HAMAGUCHI ,  MASAYUKI MIYAMOTO ,  SHINJI SHINJO

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416 ,  G06F2203/04103

Abstract: The present disclosure detects capacitance distribution between each of detection electrodes and a detected subject on a touch panel with a simple configuration. A drive sense switch element selected among a plurality of drive sense switch elements (DST) on the basis of a code sequence via control lines turns on, and drive sense lines are driven at a first potential. A difference between linear sum signals based on an electric charge of each of the detection electrodes is then read. Subsequently, a capacitance or a change in capacitance between each of the detection electrodes of a touch panel and a detected subject is detected on the basis of a sum-of-product computation performed on the difference between the linear sum signals and the code sequence.