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：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：US20160098117A1

公开(公告)日：2016-04-07

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.

Abstract translation: 一种触摸显示装置，被配置为在线感测期间以第一多个步骤驱动信号线，并且在对应于第一多个步骤的第二多个步骤中调整偏移电容。

公开(公告)号：US20220012449A1

公开(公告)日：2022-01-13

申请号：US17372942

申请日：2021-07-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yeolmin SEONG ,  Seongwook SONG ,  Kiup KIM ,  Yoonkyung CHOI

IPC: G06K9/00 ,  G06F3/041 ,  G06F21/32

Abstract: An electronic device includes a touch panel that includes a plurality of row touch lines and a plurality of column touch lines, a touch driver that controls the plurality of row touch lines and the plurality of column touch lines to obtain secondary biometrics including touch profile information, first indicator information, and second indicator information associated with a fingerprint of a user being in contact with the touch panel, in a fingerprint sensing mode of the electronic device, a fingerprint sensor that obtains fingerprint information about the fingerprint of the user, in the fingerprint sensing mode of the electronic device, an authentication module that performs a fingerprint matching operation and an anti-spoofing operation based on the fingerprint information and the secondary biometrics to output an authentication result, and an application processor that performs a security operation based on the authentication result.