US 12,287,935 B2
Touch sensor and a display device including the same
Choon Hyop Lee, Yongin-si (KR); Jang Hui Kim, Yongin-si (KR); Jae Won Kim, Yongin-si (KR); and In Nam Lee, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Apr. 18, 2024, as Appl. No. 18/639,005.
Application 18/639,005 is a continuation of application No. 17/708,188, filed on Mar. 30, 2022, granted, now 11,983,360.
Claims priority of application No. 10-2021-0048082 (KR), filed on Apr. 13, 2021.
Prior Publication US 2024/0264697 A1, Aug. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01); G09G 3/32 (2016.01)
CPC G06F 3/04166 (2019.05) [G06F 3/0418 (2013.01); G06F 3/0446 (2019.05); G09G 3/32 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A touch sensor, comprising:
driving electrodes and sensing electrodes for touch sensing;
a driving signal generator which supplies driving signals to the sensing electrodes based on a reference code; and
a processor which receives a sensing signal from the sensing electrodes and determines a touch position based on the sensing signal and the reference code;
wherein the driving signal generator updates the reference code at a predetermined time point, the time point is determined so that a phase delay of the driving signal to the time point is less than π/4.