US 11,842,013 B2
Touch controller, touch screen driving circuit comprising the same, and method of operating touch screen driving circuit
Yunrae Jo, Yongin-si (KR); Yoon-Kyung Choi, Seongnam-si (KR); and Jinbong Kim, Yongin-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Nov. 17, 2021, as Appl. No. 17/528,722.
Claims priority of application No. 10-2020-0154702 (KR), filed on Nov. 18, 2020.
Prior Publication US 2022/0155937 A1, May 19, 2022
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01); G09G 3/3225 (2016.01)
CPC G06F 3/04184 (2019.05) [G06F 3/0446 (2019.05); G09G 3/3225 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0809 (2013.01); G09G 2310/027 (2013.01); G09G 2310/0286 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A touch screen driving circuit for driving a touch screen, the touch screen comprising a display layer and a touch sensor layer on the display layer, the touch screen driving circuit comprising:
a touch controller configured to provide a plurality of drive signals respectively to a plurality of first electrodes of the touch sensor layer, in a driving period, wherein the plurality of drive signals are phase synchronized during a first sub-period of the driving period; and
a display driving circuit configured to provide a compensation signal to at least some of a plurality of source lines of the display layer in the first sub-period of the driving period, wherein the compensation signal is phase synchronized opposite to the plurality of drive signals in the first sub-period.