公开(公告)号：US10254882B2

公开(公告)日：2019-04-09

申请号：US15226880

申请日：2016-08-02

Applicant: Samsung Display Co., Ltd.

Inventor： Su Jin Seo ,  Ha Neul Kim

IPC: G06F3/041 ,  G09G3/3208 ,  G06F3/044

Abstract: A touch sensor includes sensing electrodes and a touch controller. The sensing electrodes are electrically separated from each other, the sensing electrodes including a first sensing electrode and a second sensing electrode. The touch controller is configured to provide driving signals to the sensing electrodes, to receive sensing signals from the sensing electrodes, and to determine a touch position based on the sensing signals. The touch controller is further configured to, in response to reception of a frequency increase signal including information about the first sensing electrode, set a frequency of a driving signal provided to the first sensing electrode as a first frequency, and to set a frequency of a driving signal provided to the second sensing electrode as a second frequency different than the first frequency.

公开(公告)号：US11282427B2

公开(公告)日：2022-03-22

申请号：US17007543

申请日：2020-08-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ha Neul Kim ,  Ho Cheol Kang ,  Dae Gwang Jang ,  Young Soo Hwang

IPC: G09G3/20

Abstract: A display device includes pixels coupled to scan lines, control lines, data lines, and sensing lines, a scan driver for supplying a scan signal to the scan lines and supplying a control signal to the control lines, a data driver for supplying one of an image data signal and a sensing data signal to the data lines, and a sensing circuit including an analog-digital converter (“ADC”) which converts a sensing value supplied through the sensing lines into a current code in a digital form, the sensing circuit correcting the current code by reflecting a conversion characteristic of the ADC, the sensing circuit sensing characteristics of the driving transistor based on the corrected current code.

公开(公告)号：US11468846B2

公开(公告)日：2022-10-11

申请号：US17141640

申请日：2021-01-05

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dae Gwang Jang ,  Hui Nam ,  Ha Neul Kim

IPC: G09G3/3275 ,  G09G3/3233 ,  G09G3/32

Abstract: A display device includes: a pixel unit including a pixel connected to a data line; a data driver which supplies a sensing reference voltage to the data line during a sensing period, and supplies a data signal to the data line during a display period; and a sensing unit which receives a sensing current corresponding to the sensing reference voltage during the sensing period, and generates correction data based on the supplied sensing current. The sensing unit includes a current integrator which outputs a sensing voltage based on the sensing current input thereto through a first input terminal and based on the sensing reference voltage input thereto through a second input terminal.

公开(公告)号：US11127352B2

公开(公告)日：2021-09-21

申请号：US17103530

申请日：2020-11-24

Applicant: Samsung Display Co., Ltd.

Inventor： Ho Cheol Kang ,  Ha Neul Kim ,  Dae-Gwang Jang ,  Young-Soo Hwang

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  H02H9/04

Abstract: An electrostatic discharge protection circuit including: a first electrostatic discharge diode including a cathode to receive a first voltage, and an anode connected to a sensing line; a first switching element to determine the first voltage as a precharging voltage applied to a source terminal of the driving transistor when a sensing operation is performed, and to determine the first voltage as a maximum voltage used in a display panel when the sensing operation is not performed; a second electrostatic discharge diode including a cathode connected to the sensing line, and an anode configured to receive a second voltage; and a second switching element configured to determine the second voltage as the precharging voltage when the sensing operation is performed, and to determine the second voltage as a minimum voltage used in the display panel when the sensing operation is not performed.