US 12,142,204 B2
Power supply device and display apparatus including the same
Tae Woo Kim, Paju-si (KR); Jae Han Kim, Seoul (KR); Sang Yeop Jeon, Seoul (KR); and Sang Yeol Kim, Seoul (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 15, 2021, as Appl. No. 17/552,113.
Claims priority of application No. 10-2020-0187861 (KR), filed on Dec. 30, 2020.
Prior Publication US 2022/0208938 A1, Jun. 30, 2022
Int. Cl. G09G 3/3225 (2016.01); H01M 10/42 (2006.01); H10K 59/131 (2023.01)
CPC G09G 3/3225 (2013.01) [H01M 10/425 (2013.01); H10K 59/131 (2023.02); G09G 2310/08 (2013.01); G09G 2330/028 (2013.01); H01M 2010/4271 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display apparatus, comprising:
a display panel having a plurality of sub-pixels and configured to display an image based on an image signal provided to the display panel;
a controller configured to determine a required power for at least one frame of the image signal and to output a switch signal based on determining if the required power is equal to or higher than a predetermined reference power; and
a power supply device configured to receive an external AC power and to generate a first high-level voltage and a second high-level voltage, the power supply device being further configured, based on the switch signal:
to output the first high-level voltage to drive the display panel, or
to combine the second high-level voltage with the first high-level voltage to generate a third high-level voltage and to output the third high-level voltage to drive the display panel.