US 12,080,222 B2
Display apparatus
Yongjin Park, Paju-si (KR); and Duhyeon Baek, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Oct. 31, 2022, as Appl. No. 18/051,047.
Claims priority of application No. 10-2021-0187071 (KR), filed on Dec. 24, 2021.
Prior Publication US 2023/0206820 A1, Jun. 29, 2023
Int. Cl. G09G 3/20 (2006.01); G09G 3/32 (2016.01); G09G 3/36 (2006.01)
CPC G09G 3/2096 (2013.01) [G09G 3/32 (2013.01); G09G 3/36 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0278 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0252 (2013.01); G09G 2330/021 (2013.01); G09G 2330/028 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a display panel including data lines;
data driver integrated circuits (ICs) supplying data voltages to the data lines, the data driver ICs including at least a first data driver IC and a second data driver IC;
a controller controlling the data driver ICs and receiving a lock signal to synchronize the data driver ICs based on an operating mode;
a power supply supplying power to the data driver ICs; and
a pull-up resistor coupling the second data driver IC to a lock signal line to which the lock signal is supplied from the power supply, and
wherein the first data driver IC comprises a lock signal switching unit receiving or blocking the lock signal from the power supply,
wherein the lock signal that is supplied to the first data driver IC or the second data driver IC is sequentially transferred through the data driver ICs to the controller, and
wherein, in a normal mode, the lock signal is transferred to the second data driver IC,
in a low power Tx driving (LPTD) mode, the lock signal is not transferred to the data driver ICs,
and before the normal mode starts after the LPTD mode, the lock signal is transferred to the first data driver IC and the second data driver IC.