公开(公告)号：US10936118B2

公开(公告)日：2021-03-02

申请号：US15974953

申请日：2018-05-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sang-Pil Nam ,  Kyung-Hoon Lee ,  Michael Choi

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/0354 ,  G06F3/038

Abstract: A touch detection device and a method of detecting a touch employ: a current-to-voltage converter configured to convert a reception signal received from a touch panel into a sensing signal, and further configured to be periodically reset for a first time period in response to a reset signal; a digital-to-analog converter configured to convert an analog signal based on the sensing signal into a first digital output signal, and a controller configured to generate a second digital output signal based on the first digital output signal by performing data interpolation on a first portion of the first digital output signal corresponding to the first time period.

公开(公告)号：US10916202B2

公开(公告)日：2021-02-09

申请号：US16420688

申请日：2019-05-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung-Hoon Lee ,  Sang-Pil Nam ,  Sang-Heon Lee ,  Michael Choi

IPC: G09G3/3275 ,  G09G3/3266 ,  G01R19/00 ,  G09G3/3233 ,  H03F3/45 ,  H03F1/34 ,  H03F3/04

Abstract: A high voltage sensing circuit included in a display driver integrated circuit includes a plurality of channels, a plurality of sampling capacitors, an amplifier and a feedback capacitor. The plurality of channels receives a plurality of input voltages. The plurality of sampling capacitors are connected to the plurality of channels, respectively, to simultaneously sample the plurality of input voltages. The amplifier is configured to sequentially receive each of a plurality of sampled input voltages to sequentially generate a respective plurality of sensing voltages. The feedback capacitor is connected between an input terminal and an output terminal of the amplifier, and is shared by the plurality of channels. The amplifier and the feedback capacitor are configured such that each of the plurality of sampled input voltages is sequentially scaled to the respective one of the plurality of sensing voltages by the amplifier and the feedback capacitor.