公开(公告)号：US10082916B2

公开(公告)日：2018-09-25

申请号：US15201532

申请日：2016-07-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Bum Soo Kim ,  Jun Chul Park ,  Hyun Kyu Ouh ,  Cha Dong Kim ,  San Ho Byun ,  Jin Chul Lee ,  Yoon Kyung Choi

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0418

Abstract: A touch screen controller for cancelling an offset capacitance of a capacitive touch screen panel includes a code generator configured to generate a time-invariant digital code and a time-variant digital code during an offset cancellation time. A switched-capacitor array converts the time-invariant digital code and the time-variant digital code into an amount of electric charges corresponding to the offset capacitance.

公开(公告)号：US09886136B2

公开(公告)日：2018-02-06

申请号：US15189647

申请日：2016-06-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jun Chul Park ,  Bum Soo Kim ,  Kyeong Gon Lee ,  Cha Dong Kim ,  San Ho Byun ,  Jin Chul Lee ,  Yoon Kyung Choi

IPC: G06F3/045 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044

Abstract: A touch screen controller controlling a capacitive touch screen includes a first comparator that compares a reference signal with a sensing signal, and generates a first output signal. The capacitive touch screen includes capacitive touch sensors connected to a sensing line and a drive line, and that sense a touch event. The sensing signal is output from the sensing line. The touch screen controller further includes a filter that generates a second output signal by integrating the first output signal in each sensing cycle of the filter, an analog-to-digital converter that converts the second output signal to a digital signal, and a controller that determines at least one of whether a noise is generated and whether the touch event is generated based on a reference digital signal and the digital signal, and that adjusts the number of the sensing cycles of the filter based on a result of the determination.

公开(公告)号：US11782552B2

公开(公告)日：2023-10-10

申请号：US16670367

申请日：2019-10-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yoon Kyung Choi ,  Jun Chul Park ,  Jin Bong Kim

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/0446 ,  G06F2203/04112

Abstract: A capacitive touch panel includes a plurality of x-line channels extending in a first direction, a plurality of y-line channels extending in a second direction, different from the first direction, and processing circuitry configured to apply a first voltage to the x-line channels, apply a second voltage to the y-line channels, the first voltage and the second voltage having opposite phases to each other, and sense a contact on at least one of intersections of the plurality of x-line channels and the plurality of y-line channels.

公开(公告)号：US09727183B2

公开(公告)日：2017-08-08

申请号：US14477198

申请日：2014-09-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： San Ho Byun ,  Jun Chul Park ,  Ki Duk Kim ,  Yoon Kyung Choi

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: A method of operating a touch screen sensor integrated circuit includes: receiving a plurality of current signals through a plurality of pins, wherein each current signal is generated according to mutual capacitance in response to a modulation signal; sensing the current signals and generating a plurality of sensed current signals corresponding to each of the current signals; and generating a plurality of subtracted current signals, wherein each subtracted current signal is generated by performing a subtraction on sensed current signals corresponding to a pair of the pins.

公开(公告)号：US10712869B2

公开(公告)日：2020-07-14

申请号：US15680108

申请日：2017-08-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jin Chul Lee ,  Choong Hoon Lee ,  Cha Dong Kim ,  Jun Chul Park ,  Dong Wook Lim ,  Yoon Kyung Choi

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch panel controller includes a signal driver charging a plurality of sensor lines extending in a direction with the same charge, by applying a driving signal to one sensor line of sensor lines and applying a mirrored driving signal mirrored from the driving signal to the remaining sensor lines of the sensor lines, and a sensor sensing a change in capacitance from the sensor lines, respectively.

公开(公告)号：US20200218421A1

公开(公告)日：2020-07-09

申请号：US16670367

申请日：2019-10-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yoon Kyung CHOI ,  Jun Chul Park ,  Jin Bong Kim

IPC: G06F3/041 ,  G06F3/044

Abstract: A capacitive touch panel includes a plurality of x-line channels extending in a first direction, a plurality of y-line channels extending in a second direction, different from the first direction, and processing circuitry configured to apply a first voltage to the x-line channels, apply a second voltage to the y-line channels, the first voltage and the second voltage having opposite phases to each other, and sense a contact on at least one of intersections of the plurality of x-line channels and the plurality of y-line channels.