公开(公告)号：US20180121019A1

公开(公告)日：2018-05-03

申请号：US15660330

申请日：2017-07-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jin Chul LEE ,  Choong Hoon LEE ,  Yoon Kyung CHOI ,  Cha Dong KIM ,  Jun Chul PARK ,  Dong Wook LIM

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044

Abstract: A touch sensor controller may include a transmitter configured to output a driving signal to sensor lines of a touch panel, a charge amplifier configured to generate and output a voltage signal by using a charge generated in the sensor lines, a sampling circuit including a first sampler and a second sampler for detecting the voltage signal, and a logic circuit configured to determine whether the transmitter is operating according to a magnitude of a noise signal included in the voltage signal, and, in response to an operation of the transmitter being interrupted, control one of the first sampler and the second sampler to sample the voltage signal according to a sign of the noise signal.

公开(公告)号：US20200272300A1

公开(公告)日：2020-08-27

申请号：US16587862

申请日：2019-09-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jin Chul LEE ,  San Ho BYUN ,  Yoon Kyung CHOI ,  Choong Hoon LEE ,  Bum Soo KIM ,  Ho Suk NA ,  Dong Wook LIM

IPC: G06F3/041 ,  G06F3/044

Abstract: The present inventive concepts relate to a noise compensation device and method of a touch-sensing panel, and to a noise avoiding device and method. The noise compensation device of a touch-sensing device according to some example embodiments includes: a noise compensation signal generator configured to generate mutually different noise compensation signals for at least portions of first to Nth channels included in the touch-sensing panel; and a noise cancelling signal output circuit configured to generate noise-compensated reception signals based on the mutually different noise compensation signals and provide the noise-compensated reception signals to each of at least two channels among the first to Nth channels, wherein N is an integer two or greater.

公开(公告)号：US20170286747A1

公开(公告)日：2017-10-05

申请号：US15392242

申请日：2016-12-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sun Kwon KIM ,  Choong Hoon LEE ,  Yun Jeong KIM

IPC: G06K9/00

CPC classification number: G06K9/00087 ,  G06K9/0002

Abstract: A unit pixel of a fingerprint sensor is provided. The unit pixel includes a sensing electrode located to form a capacitance with an object touching a touch surface, a first switch connected between a first node and a second node to transmit at least one driving voltage input through the second node, the first node connected to the sensing electrode, the switch configured to the sensing electrode, an amplifier configured to receive a signal from the sensing electrode and amplify the signal, and a first capacitor connected between a first input terminal and an output terminal of the amplifier, the first capacitor configured to transmit the signal from the sensing electrode to the output terminal. The amplifier is configured to output a different output voltage according to the at least one driving based on an operation of the first switch.