公开(公告)号：US20240045556A1

公开(公告)日：2024-02-08

申请号：US18485708

申请日：2023-10-12

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：US20220209784A1

公开(公告)日：2022-06-30

申请号：US17696252

申请日：2022-03-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sanho BYUN ,  Minsung KIM ,  Jungmoon KIM

IPC: H03M1/44 ,  G06F3/044 ,  H03M1/36

Abstract: A touch processing circuit includes: a front-end circuit including an amplifier, a first capacitor, a second capacitor, a third capacitor, and a plurality of switches each having two ends that are selectively connected each other, the front-end circuit being configured to process an input signal varying according to a touch; and a controller controlling the plurality of switches so that the front-end circuit is configured as a first circuit that accumulates deviation of the input signal between a first phase and a second phase during an integration period and a second circuit that converts the accumulated deviation into a digital signal during a conversion period.

公开(公告)号：US20220214794A1

公开(公告)日：2022-07-07

申请号：US17699728

申请日：2022-03-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Minsung KIM ,  Sanho BYUN ,  Roots HUANG ,  Yao Sheng LIANG ,  Jungmoon KIM ,  Dongjo PARK

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch sensing system is provided. The touch sensing system includes a touch panel including touch sensors arranged in a grid along row and column directions; a touch controller including at least one transmission circuit to transmit a signal to the touch sensors and at least one reception circuit to detect a signal from the touch sensors; and a switching circuit to selectively connect each of the touch sensors to the at least one transmission circuit and the at least one reception circuit in accordance with an operation mode. The switching circuit connects each of the touch sensors to the at least one reception circuit in a touch mode and connects a first portion of the touch sensors to the at least one reception circuit and a second portion of the touch sensors to the at least one transmission circuit in a proximity mode.