US 12,266,318 B2
Power control device and control method of display having control command data with varied pulse length
Jung Jae Kim, Paju-si (KR); Dong Won Park, Paju-si (KR); and Yong Chul Kwon, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Sep. 19, 2023, as Appl. No. 18/470,197.
Claims priority of application No. 10-2022-0183509 (KR), filed on Dec. 23, 2022.
Prior Publication US 2024/0212630 A1, Jun. 27, 2024
Int. Cl. G09G 3/32 (2016.01); G09G 3/3291 (2016.01)
CPC G09G 3/3291 (2013.01) [G09G 2330/021 (2013.01); G09G 2360/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A power control device of a display apparatus, the display apparatus having a display panel that includes a plurality of pixels, the power control device comprising:
a panel driver configured to drive the display panel;
a power control circuit configured to output a power control signal, the power control signal including control command data; and
a power source circuit configured to shift an output level of a source voltage provided to the display panel and the panel driver, based on the control command data,
wherein the control command data comprises a plurality of control pulses having alternating logic low periods and logic high periods,
wherein the logic low periods include two or more different lengths, different lengths of logic low periods indicating different binary digits, and
wherein the logic high periods have a same length as one another.