公开(公告)号：US20200292591A1

公开(公告)日：2020-09-17

申请号：US16882884

申请日：2020-05-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jun-han CHOI ,  Tae-hwang KONG ,  Kwang-ho KIM ,  Sang-ho KIM ,  Se-Ki KIM ,  Jun-hyeok YANG ,  Sung-yong LEE ,  Yong-jin LEE

IPC: G01R19/14 ,  G05F1/46 ,  H02J50/10 ,  H02J50/80 ,  H02J7/00

Abstract: A semiconductor device for monitoring a reverse voltage is provided. The semiconductor device includes an intellectual property having an input node and an output node; a passive component connected between the output node and a potential; a monitoring circuit connected to the input node and the output node and powered by a driving power, the monitoring circuit monitoring a difference between an input level at the input node and an output level at the output node to detect a reverse voltage across the intellectual property. The driving power is provided by the output node.

公开(公告)号：US20190196642A1

公开(公告)日：2019-06-27

申请号：US16128529

申请日：2018-09-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tae-hwang KONG

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

Abstract: Provided are a touch screen controller, a touch screen system including the touch screen controller, and a method of operating the touch screen controller. The touch screen controller includes a driving circuit configured to output a first driving signal in a first touch mode and a second driving signal in a second touch mode, the first touch mode including a driving period and a subsequent sensing period; and a boosting circuit configured, in the first touch mode, to generate a first voltage by performing an internal switching operation based on an input voltage and a first switching signal, and configured to provide the first voltage to the driving circuit, wherein the first switching signal has a first frequency in the driving period and a second frequency different from the first frequency in the subsequent sensing period.