公开(公告)号：US09791986B2

公开(公告)日：2017-10-17

申请号：US14804591

申请日：2015-07-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyunkyu Ouh ,  Bumsoo Kim ,  Junchul Park ,  Jinchul Lee ,  Yoonkyung Choi

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0418

Abstract: A touch display device configured to drive a signal line in a first plurality of steps during a line-sensing period and adjust an offset capacitance in a second plurality of steps corresponding to the first plurality of steps.

公开(公告)号：US12032773B2

公开(公告)日：2024-07-09

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 ,  G06F3/044

CPC classification number: G06F3/04162 ,  G06F3/03545 ,  G06F3/0412 ,  G06F3/04164 ,  G06F3/04166 ,  G09G3/3225 ,  G06F3/0446 ,  G09G2320/0247

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：US11921953B2

公开(公告)日：2024-03-05

申请号：US17209838

申请日：2021-03-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yunrae Jo ,  Jinchul Lee ,  Sungyong Cho ,  Bumsoo Kim ,  Yoonkyung Choi

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044

CPC classification number: G06F3/04186 ,  G06F3/03545 ,  G06F3/0412 ,  G06F3/04162 ,  G06F3/04164 ,  G06F3/0446

Abstract: An apparatus for sensing a touch includes: a sensor array including a plurality of sensor groups, each of the plurality of sensor groups including sensors adjacent to each other; a first switch circuit configured to connect each of the plurality of sensor groups to a first channel or a second channel according to a first control signal; and a second switch circuit configured to select one of the first channel and the second channel according to a second control signal, wherein the first channel includes first signal lines connected to respective sensors included in a first sensor group of the plurality of sensor groups by the first switch circuit, and the second channel includes a second signal line commonly connected to the sensors included in the first sensor group by the first switch circuit.

公开(公告)号：US11822753B2

公开(公告)日：2023-11-21

申请号：US17306317

申请日：2021-05-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jinchul Lee ,  Yoonkyung Choi ,  Bumsoo Kim ,  Sanho Byun

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0446 ,  G06F3/0412

Abstract: A touch sensor of multi-driving scheme includes a touch panel including input lines and output lines, the touch panel causes a change in mutual capacitance in response to touch. Processing circuitry generates transmission signals to the input lines as a result of an encoding operation on a first matrix having an inverse matrix, each of the transmission signals has a first polarity or a second polarity opposite in phase to the first polarity; outputs the transmission signals in an unbalanced period when the sum of phases of the transmission signals is greater than 0; receives receiving signals through the output lines; and decodes the receiving signals based on the first matrix, the receiving signals generated by the change in the mutual capacitance in response to the touch.

公开(公告)号：US09973199B2

公开(公告)日：2018-05-15

申请号：US15199010

申请日：2016-06-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： San-Ho Byun ,  Chadong Kim ,  Jinchul Lee ,  Bumsoo Kim ,  Junchul Park ,  Kyeonggon Lee

IPC: G06F3/044 ,  H03M1/08 ,  H03M3/00

CPC classification number: H03M1/08 ,  G06F3/044 ,  H03M1/144 ,  H03M1/145 ,  H03M3/458 ,  H03M3/464

Abstract: A touch processor circuit includes a capacitance-to-voltage converter and an analog-to-digital converter. The capacitance-to-voltage converter converts an input signal transmitted from a touch sensor into a conversion signal corresponding to a capacitance of the touch sensor. The analog-to-digital converter digitizes the conversion signal transmitted from the capacitance-to-voltage converter and generates a digital value. The analog-to-digital converter includes a first converter, a second converter, and a combination logic circuit. The first converter calculates upper bits of the digital value based on the conversion signal during a first time period. The second converter calculates lower bits of the digital value based on a residue component signal transmitted from the first converter during a second time period. The combination logic circuit combines the upper bits and the lower bits and generates the digital value.