Patent ID: 11942868
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 11:
12. A display device comprising:
a plurality of pixels configured to display an image; and
a power supply device configured to supply a power voltage to a power line connected in common to the plurality of pixels,
wherein the power supply device comprises:
a first inductor;
a second inductor;
a third inductor;
a first transistor connected between an input voltage and the second inductor;
a second transistor connected between the input voltage and the third inductor; and
a power integrated chip (IC) including input terminals respectively connected to the first inductor, the second inductor, and the third inductor, and an output terminal connected to the power line,
wherein the power supply device supplies the power voltage using the first inductor and the power IC when power current flowing through the power line is less than a first reference value, supplies the power voltage using the second inductor, the first transistor, and the power IC when the power current is increased and is greater than the first reference value and less than a second reference value, and supplies the power voltage using the second inductor, the third inductor, the first transistor, the second transistor, and the power IC when the power current is increased and is greater than the second reference value.