US 12,067,201 B2
Touch sensor controller, operating method of touch sensor controller, and touch screen driving circuit
Junchul Park, Daegu (KR); Jonghee Na, Hwaseong-si (KR); Gwangho Nam, Hwaseong-si (KR); Taekon Yu, Hwaseong-si (KR); Hyunwook Lim, Seoul (KR); Woohyuk Jang, Hwaseong-si (KR); Bumsoo Kim, Hwaseong-si (KR); Byunghwee Park, Hwaseong-si (KR); Wongab Jung, Hwaseong-si (KR); and Yoon-Kyung Choi, Seongnam-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on May 22, 2023, as Appl. No. 18/200,402.
Application 18/200,402 is a continuation of application No. 17/590,008, filed on Feb. 1, 2022, granted, now 11,656,729.
Claims priority of application No. 10-2021-0016284 (KR), filed on Feb. 4, 2021.
Prior Publication US 2023/0289018 A1, Sep. 14, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01); G09G 3/3233 (2016.01)
CPC G06F 3/0445 (2019.05) [G06F 3/0412 (2013.01); G06F 3/04164 (2019.05); G06F 3/04166 (2019.05); G06F 3/0418 (2013.01); G06F 3/0446 (2019.05); G09G 3/3233 (2013.01); G09G 2320/0223 (2013.01); G09G 2320/0295 (2013.01); G09G 2354/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An operating method of a touch sensor controller for driving a touch sensor stacked on a display panel, the operating method comprising:
generating, by the touch sensor controller, display noise data by performing display noise sensing on the touch sensor in a first period and a third period, the first period and the third period overlapping a display period in which an image is displayed on the display panel;
generating, by the touch sensor controller, touch data by performing touch sensing on a first portion of the touch sensor in a second period and a second portion of the touch sensor in a fourth period, the second period and the fourth period overlapping the display period and being different from the first period and the third period, and the first portion of the touch sensor is different from the second portion of the touch sensor; and
processing, by the touch sensor controller, the touch data based on the display noise data generated through display noise sensing performed at a time point closest to a time point at which touch sensing was performed,
wherein generating the display noise data includes:
applying, by the touch sensor controller, a positive driving signal to at least one first driving electrode among a plurality of first driving electrodes of the touch sensor;
applying, by the touch sensor controller, a negative driving signal to at least one second driving electrode among a plurality of second driving electrodes adjacent to the at least one first driving electrode; and
receiving, by the touch sensor controller, display noise signals from sensing electrodes of the touch sensor.