Patent ID: 11862097
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. A display device comprising:
a display panel including a pixel circuit;
a display panel driving circuit configured to drive the display panel;
a voltage generating circuit configured to receive an input power supply voltage when the display device is powered on, and generate display panel voltages for driving the display panel and driving circuit voltages for driving the display panel driving circuit based on the input power supply voltage; and
an over-current protecting circuit configured to monitor an over-current generated inside the display device, and generate a shut-down request signal for shutting down at least one of the display panel, the display panel driving circuit, and the voltage generating circuit when the over-current is detected,
wherein the voltage generating circuit is configured to output an initialization voltage for initializing an initialization target node in the pixel circuit at a first time point that is later than a time point at which the input power supply voltage is received,
wherein the display panel driving circuit is configured to output a scan clock signal for generating a scan signal that is to be applied to the pixel circuit at a second time point that is later than the first time point, and
wherein the over-current protecting circuit is configured to perform a first over-current protecting operation of detecting whether an initialization voltage current caused by the initialization voltage is the over-current in a power-on monitoring period that is set between the first time point and the second time point.