US 12,073,040 B2
Display device including touch panel and method of driving display device including touch panel
Junseong Lee, Gwangyang-si (KR); Bogeun Yuk, Hwaseong-si (KR); Min-Hong Kim, Hwaseong-si (KR); Taejoon Kim, Seongnam-si (KR); Eungkwan Lee, Hwaseong-si (KR); and Hyun-Wook Cho, Seongnam-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Oct. 10, 2022, as Appl. No. 17/962,669.
Application 17/962,669 is a continuation of application No. 17/477,967, filed on Sep. 17, 2021, granted, now 11,467,688.
Claims priority of application No. 10-2020-0129703 (KR), filed on Oct. 7, 2020.
Prior Publication US 2023/0030916 A1, Feb. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0416 (2013.01) [G06F 3/0446 (2019.05); G06F 2203/04108 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A display device which detects an object, the display device comprising:
a display panel including a display area in which an image is displayed and a bezel area in which the image is not displayed;
a first sensor which is disposed in the display area and includes electrodes disposed on the display panel;
a second sensor which is disposed in the bezel area and detects proximity with respect to the object based on a capacitance variation;
a display driver which drives the display panel; and
a touch controller which drives the first sensor and the second sensor,
wherein the touch controller drives the first sensor in a mutual capacitance sensing scheme in a first mode of the display device in which the image is displayed on the display panel and drives the first sensor in a self-capacitance sensing scheme in a second mode of the display device in which the image is not displayed on the display panel, and
the touch controller provides a first voltage only having a negative polarity to the second sensor when the second sensor detects that the object approaches the second sensor such that a shortest distance from the object to the second sensor is equal to or less than a first reference distance.