US 12,094,424 B2
Display device and data driving circuit
Hong Soon Kim, Paju-si (KR); Chan Park, Paju-si (KR); and Nakyoon Kim, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Oct. 26, 2022, as Appl. No. 17/974,320.
Claims priority of application No. 10-2021-0153781 (KR), filed on Nov. 10, 2021.
Prior Publication US 2023/0143178 A1, May 11, 2023
Int. Cl. G09G 3/3291 (2016.01); G09G 3/20 (2006.01); G09G 3/3233 (2016.01)
CPC G09G 3/3291 (2013.01) [G09G 3/2074 (2013.01); G09G 3/3233 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0291 (2013.01); G09G 2310/0297 (2013.01); G09G 2330/021 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display panel including a plurality of subpixels and a plurality of data lines connected to the plurality of subpixels, and divided into an always-on display area displaying information during a standby screen period and a black grayscale area except for the always-on display area;
an image display voltage output circuit configured to output a data voltage to input to the always-on display area during the standby screen period;
a voltage stabilization circuit configured to output a constant voltage to input to at least a partial area of the black grayscale area during the standby screen period; and
a data driving circuit configured to output the data voltage to the plurality of data lines and including the image display voltage output circuit and the voltage stabilization circuit,
wherein the constant voltage is a data voltage to input to at least one of the data lines connected to one or more of the subpixels in at least the partial area of the black grayscale area, and
wherein during an image display period different from the standby screen period, the data driving circuit inputs a data voltage for image display to the plurality of data lines in a refresh frame and inputs a data voltage output from the voltage stabilization circuit to the plurality of data lines in an anode reset frame other than the refresh frame.