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：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.