公开(公告)号：US20250077028A1

公开(公告)日：2025-03-06

申请号：US18823684

申请日：2024-09-04

Applicant: Samsung Display Co., Ltd.

Inventor： Bongil Kang ,  Minhong Kim ,  Jungmok Park ,  Yerin Oh

IPC: G06F3/041 ,  G06F3/044

Abstract: A method of testing a display apparatus using a touch sensor and a touch integrated circuit is presented. The touch sensor includes a driving electrode line and a detection electrode line, and the touch integrated circuit includes a signal driving unit and a signal detection unit. The method includes sensing a first mutual capacitance of predetermined test coordinates by applying a first driving signal to the driving electrode line and receiving a detection signal from the detection electrode line, sensing a second mutual capacitance of the predetermined test coordinates by applying a second driving signal to the driving electrode line and receiving a detection signal from the detection electrode line, and determining whether a touch operation is performed based on a difference between the first mutual capacitance and the second mutual capacitance.

公开(公告)号：US20250068283A1

公开(公告)日：2025-02-27

申请号：US18673413

申请日：2024-05-24

Applicant: Samsung Display Co., Ltd.

Inventor： Minhong Kim ,  Jungmok Park ,  Seungrok Lee ,  Hyeonseo Cho

IPC: G06F3/041

Abstract: A display apparatus is disclosed that includes a touch panel, a display panel, and a touch integrated circuit (IC) configured to determine whether a first frequency, which is a driving frequency of the display panel, matches a second frequency, which is a driving frequency of the touch panel, and change the second frequency to a third frequency that is different from the first frequency when the first frequency matches the second frequency.

公开(公告)号：US20250123706A1

公开(公告)日：2025-04-17

申请号：US18909946

申请日：2024-10-09

Applicant: Samsung Display Co., Ltd.

Inventor： Bongil Kang ,  Minhong Kim ,  Sangkook Kim ,  Yerin Oh

IPC: G06F3/041 ,  G06F3/044

Abstract: A display device is disclosed that includes a display panel displaying an image, a display driving portion configured to drive the display panel, a touch unit disposed on the display panel and including a driving electrode and a sensing electrode, a touch driving portion configured to transmit a touch driving signal to the driving electrode and receive a touch sensing signal from the sensing electrode, and a main processor configured to control the display driving portion and the touch driving portion, in which a driving frequency of the touch driving signal is determined based on an amount of change in touch capacitance due to an external input, with respect to touch capacitance between the driving electrode and the sensing electrode.