US 12,307,955 B1
Display system, power management circuit and related operation method
Yi-Yo Dai, Hsin-Chu (TW); and Wei-Jen Chen, Hsin-Chu (TW)
Assigned to AUO CORPORATION, Hsin-Chu (TW)
Filed by AUO Corporation, Hsin-Chu (TW)
Filed on Jun. 24, 2024, as Appl. No. 18/751,405.
Claims priority of application No. 112149738 (TW), filed on Dec. 20, 2023.
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2330/021 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display system, comprising:
a display panel, comprising a plurality of pixel circuits;
a display driving circuit, coupled to the display panel, and configured to receive a first horizontal synchronizing signal, wherein the display driving circuit is configured to transmit a data signal to the display panel according to the first horizontal synchronizing signal, wherein the data signal is configured to assign a grayscale value to each of the pixel circuits; and
a power management circuit, coupled to the display driving circuit and the display panel, wherein the power management circuit is configured to provide a first operating voltage (ELVDD) and a second operating voltage (ELVSS) to the pixel circuits, wherein the first operating voltage is higher than the second operating voltage,
wherein the display driving circuit is configured to transmit the first horizontal synchronizing signal to the power management circuit, the power management circuit is configured to adjust at least one of the first operating voltage (ELVDD) and the second operating voltage (ELVSS) in response to the first horizontal synchronizing signal.