公开(公告)号：US20220148531A1

公开(公告)日：2022-05-12

申请号：US17387235

申请日：2021-07-28

Applicant: Samsung Display Co., Ltd.

Inventor： GWANGSOO AHN ,  JONG JAE LEE ,  SUNGSOO CHOI

IPC: G09G3/36

Abstract: A display device includes a display panel including a gate line, a data line, a gate driver outputting a gate signal to the gate line, a data driver outputting a data voltage to the data line and a power voltage generator. The power voltage generator generates a gate-on voltage, a gate-off voltage, and a gate clock signal toggled between the gate-on voltage and the gate-off voltage, detects a current level of a gate clock current, cuts off power of the display device when a count of the gate clock current higher than or equal to a first current level is greater than or equal to a reference count, and cuts off the power of the display device when the gate clock current is higher than or equal to a second current level higher than the first current level in an initial frame after the display device is turned on.

公开(公告)号：US20180061352A1

公开(公告)日：2018-03-01

申请号：US15691190

申请日：2017-08-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： HONGKYU KIM ,  POYUN PARK ,  YUJIN KIM ,  JIMYOUNG SEO ,  GWANGSOO AHN

IPC: G09G3/36

Abstract: A method of driving a display device includes receiving a reference clock signal and frequency determination data to determine a pixel driving clock frequency and generate a pixel driving clock signal, generating and outputting a gate driving clock signal according to the pixel driving clock frequency, and outputting a driving voltage according to the pixel driving clock frequency. The driving voltage increases as the pixel driving clock frequency increases.

公开(公告)号：US20220208141A1

公开(公告)日：2022-06-30

申请号：US17541616

申请日：2021-12-03

Applicant: Samsung Display Co., Ltd.

Inventor： GWANGSOO AHN ,  JONG JAE LEE ,  TAEGON IM

IPC: G09G5/00 ,  G09G3/36

Abstract: A display device may include a display panel including a gate line, a data line, and a pixel electrically connected to the gate line and the data line, where display panel displays an image based on input image data, a gate driver which outputs a gate signal to the gate line, a data driver which outputs a data voltage to the data line, and a power supply voltage generator which provides a driving voltage to the display panel, the gate driver and the data driver. The power supply voltage generator generates a gate clock signal based on an on-clock signal and an off-clock signal and changes a count value of the on-clock signal or the off-clock signal when the gate clock signal is an abnormal signal.

公开(公告)号：US20200244920A1

公开(公告)日：2020-07-30

申请号：US16847935

申请日：2020-04-14

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： GWANGSOO AHN ,  Po-yun PARK ,  Hong-kyu KIM ,  Jimyoung SEO

IPC: H04N7/01 ,  G09G5/00 ,  G09G3/36 ,  G09G3/20

Abstract: A display device includes a driving controller controlling a data driving circuit and providing a clock signal and a driving voltage in response to an image signal and a control signal received from an external source. The driving controller restores a data enable signal having a display period and a blank period in one frame on the basis of the control signal and sets a voltage level of the driving voltage applied to the gate driving circuit in accordance with a duration of the blank period. During a sequence of frames having a changing frame rate, the driving voltage for each respective frame may be set based on the duration of each respective blank period.