US 12,068,681 B2
Display device and method for controlling display device
Moonyoung Kim, Suwon-si (KR); and Jeongil Kang, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Aug. 10, 2022, as Appl. No. 17/885,051.
Application 17/885,051 is a continuation of application No. PCT/KR2021/095020, filed on Jan. 20, 2021.
Claims priority of application No. 10-2020-0021106 (KR), filed on Feb. 20, 2020.
Prior Publication US 2022/0385172 A1, Dec. 1, 2022
Int. Cl. H02M 1/42 (2007.01); G09G 1/00 (2006.01); H02M 1/00 (2007.01)
CPC H02M 1/4208 (2013.01) [G09G 1/005 (2013.01); H02M 1/0032 (2021.05); G09G 2330/021 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display device comprising:
a diode bridge configured to rectify input power;
a power factor correction (PFC) circuit configured to control a power factor of the input power rectified by the diode bridge;
a direct current (DC)/DC converter configured to change voltage of the input power received through the PFC circuit; and
a PFC controller connected to the diode bridge and configured to selectively turn on or off the PFC circuit based on terminal voltages of diodes included in the diode bridge,
wherein the PFC controller is further configured to:
identify that the input power is alternating current (AC) power based on a change in the terminal voltages of the diodes included in the diode bridge, and
identify that the input power is DC power in response to no change in the terminal voltages of the diodes included in the diode bridge.