公开(公告)号：US20180107309A1

公开(公告)日：2018-04-19

申请号：US15297540

申请日：2016-10-19

Applicant: SYNAPTICS INCORPORATED

Inventor： Kazuya ENDO ,  Shinobu NOHTOMI ,  Nobukazu TANAKA ,  Tomohiro HIRAKAWA ,  Hiroshi TAKEYAMA ,  Takayuki NOTO ,  Petr SHEPELEV

IPC: G06F3/041 ,  H03K17/96 ,  G09G3/36

CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G09G3/3614 ,  G09G3/3655 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2330/02

Abstract: The semiconductor device is intended for connection with an in-cell type display touch panel having a plurality of common electrodes, a reference voltage for display is applied to the common electrodes in a display drive period, and the common electrodes serve as sensor electrodes in a touch detection period. The semiconductor device includes a DC level shift circuit operable to shift the DC level of a toggle signal output by a toggle drive circuit to the reference voltage. The semiconductor device supplies the reference voltage to the common electrodes of the display touch panel in the display drive period, and performs a guarding action in which at least a part of the plurality of common electrodes is supplied with a toggle signal shifted in DC level in the touch detection period.

公开(公告)号：US20200167040A1

公开(公告)日：2020-05-28

申请号：US16638017

申请日：2018-08-01

Applicant: SYNAPTICS INCORPORATED

Inventor： Petr SHEPELEV ,  Tetsuo TANEMURA ,  HaThanh NGUYEN ,  Takayuki NOTO ,  Hiroshi TAKEYAMA ,  Takeshi HASHIMOTO ,  Tsuyoshi KUROIWA ,  Arnulf GRAF

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

Abstract: A sensing device comprises sensor electrodes arranged in an array of rows and columns, and vias. A first vias is arranged in a first direction, and corresponds to a first column of sensor electrodes adjacent to a first side edge of the sensing device. A second via is arranged in a second direction different than the first direction, and corresponds to a second column of the sensor electrodes adjacent to a second side edge of the sensing device. Each of the sensor electrodes is configured to be coupled to a routing trace through one of the vias. In a first row of the plurality of sensor electrodes, a two vias are different distances from the first side edge and in a second row of the plurality of sensor electrodes, two vias are different distances from the second side edge.