公开(公告)号：US20220129128A1

公开(公告)日：2022-04-28

申请号：US17348930

申请日：2021-06-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yunrae JO ,  Ohkyong KWON ,  Yoonkyung CHOI ,  Jinbong KIM ,  Jaehyung JUNG

IPC: G06F3/041

Abstract: A touch display system includes: a display driver integrated circuit (IC) configured to drive a display panel; a touch screen controller configured to drive a touch screen panel; a driving voltage generator configured to provide driving voltages to the display panel, the display driver IC, and the touch screen controller; and a ground modulation device configured to receive a driving signal, which is used to drive the touch screen panel and periodically swings between a first reference voltage level and a second reference voltage level, from the touch screen controller, configured to generate a modulated ground voltage, which periodically swings between the first reference voltage level and the second reference voltage level, based on the driving signal, and configured to provide the modulated ground voltage to the display panel, the display driver IC, and the touch screen controller

公开(公告)号：US20230266842A1

公开(公告)日：2023-08-24

申请号：US18299361

申请日：2023-04-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungyong CHO ,  Jinchul LEE ,  Yunrae JO ,  Bumsoo KIM ,  Choonghoon LEE ,  Yoon-Kyung CHOI

IPC: G06F3/041 ,  G06F3/0354 ,  G09G3/3225

CPC classification number: G06F3/04162 ,  G06F3/03545 ,  G06F3/04164 ,  G09G3/3225 ,  G06F3/0412 ,  G06F3/04166 ,  G06F3/0446

Abstract: A touch sensing device may include a touch sensor array including at least one beacon driving section and at least one compensation section, the at least one beacon driving section including a plurality of first touch electrodes, and the at least one compensation section including a plurality of second touch electrodes; and a touch controller connected to the touch sensor array through at least one first driving channel and at least one second driving channel, the touch controller is configured to, during a first uplink period for communication with an active pen, provide at least one beacon signal to the at least one first driving channel, and provide at least one compensation signal to the at least one second driving channel, the at least one compensation signal being an inverse of the at least one beacon signal.

公开(公告)号：US20220214791A1

公开(公告)日：2022-07-07

申请号：US17397223

申请日：2021-08-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungyong CHO ,  Jinchul LEE ,  Yunrae JO ,  Bumsoo KIM ,  Choonghoon LEE ,  Yoon-Kyung CHOI

IPC: G06F3/041 ,  G06F3/0354 ,  G09G3/3225

Abstract: A touch sensing device may include a touch sensor array including at least one beacon driving section and at least one compensation section, the at least one beacon driving section including a plurality of first touch electrodes, and the at least one compensation section including a plurality of second touch electrodes; and a touch controller connected to the touch sensor array through at least one first driving channel and at least one second driving channel, the touch controller is configured to, during a first uplink period for communication with an active pen, provide at least one beacon signal to the at least one first driving channel, and provide at least one compensation signal to the at least one second driving channel, the at least one compensation signal being an inverse of the at least one beacon signal.

公开(公告)号：US20220155937A1

公开(公告)日：2022-05-19

申请号：US17528722

申请日：2021-11-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yunrae JO ,  Yoon-Kyung CHOI ,  Jinbong KIM

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3225

Abstract: A touch screen driving circuit for driving a touch screen which includes a display layer and a touch sensor layer on the display layer is provided. The touch screen driving circuit includes: a touch controller configured to provide a plurality of drive signals respectively to a plurality of first electrodes of the touch sensor layer, in a driving period, wherein the plurality of drive signals are phase synchronized during a first sub-period of the driving period; and a display driving circuit configured to provide a compensation signal to at least some of a plurality of source lines of the display layer in the first sub-period of the driving period, wherein the plurality of compensation signals are phase synchronized opposite to the plurality of drive signals in the first sub-period.