Patent ID: 11862094
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. A display device, comprising:
pixels coupled to scan lines, control lines, data lines, and sensing lines;
a scan driver configured to supply a scan signal to the scan lines and supply a control signal to the control lines;
a data driver configured to supply one of an image data signal and a sensing data signal to the data lines;
a sensing circuit configured to sense characteristics of driving transistors included in the pixels based on a sensing current supplied through the sensing lines during a sensing period; and
a power management driver configured to provide first driving power and second driving power to the pixels,
wherein the power management driver comprises:
a first power supply configured to supply a first voltage of the first driving power to a first driving power terminal of the pixels through a first power line during the sensing period, and supply a second voltage of the first driving power to the first driving power terminal of the pixels through the first power line during a display period;
a second power supply configured to supply a second voltage of the second driving power to the pixels through a second power line during the sensing period and the display period; and
a fault detector configured to detect a reduced impedance fault in the first power line based on a current flowing through the first power line during the sensing period, and
wherein the first power supply comprises:
a digital-to-analog converter configured to output the first voltage based on a voltage of an input power;
a first switch coupled between the digital-to-analog converter and the power line, the first switch turned on in response to a first enable signal; and
a second switch coupled between the power line and a voltage source, to which the second voltage is supplied, the second switch turned on in response to a second enable signal.