US 12,475,832 B2
Display device
Beomjun Shin, Goyang-si (KR); and Gyeongho Ryu, Daegu (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Jan. 23, 2024, as Appl. No. 18/420,460.
Claims priority of application No. 10-2023-0013257 (KR), filed on Jan. 31, 2023.
Prior Publication US 2024/0257700 A1, Aug. 1, 2024
Int. Cl. G09G 3/3208 (2016.01); G09G 3/20 (2006.01)
CPC G09G 3/2096 (2013.01) [G09G 3/3208 (2013.01); G09G 2300/0814 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0857 (2013.01); G09G 2370/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display panel in which a plurality of pixels is disposed;
a timing controller configured to generate and output control signals for driving the display panel;
a first communication line which is electrically connected between the timing controller and a first memory and is electrically connected to an external device;
a second communication line which is electrically connected between the timing controller and a second memory and is electrically connected to the external device;
a line controller configured to control whether to use the second communication line based on whether the first communication line is used; and
a switch electrically connected to the second communication line,
wherein the line controller turned off the switch when determining that the first communication line is in use and the switch disconnected the second communication line,
wherein the line controller determines whether the first communication line is used based on a serial clock signal and a serial data signal transmitted between the timing controller and the first memory to output a control signal which controls whether to use the second communication line,
wherein the line controller includes:
a usage section determination circuit which determines a start section which starts use of the first communication line to output a start signal and determines an end section which ends the use of the first communication line to output an end signal, based on the serial clock signal and the serial data signal;
an initialization circuit which outputs an initialization signal to initialize the usage section determination circuit when the start signal and the end signal are input; and
an output circuit which outputs the control signal which controls whether to use the second communication line according to the start signal and the end signal,
wherein the output circuit outputs the control signal to disconnect the second communication line when the start signal of high level and the end signal of low level is input and outputs the control signal to electrically connect the second communication line when the start signal of high level and the end signal of high level is input.