US 12,462,762 B2
Light-emitting display device and driving method thereof
Jeong Ho Kim, Paju-si (KR); and Dae Kyu Kim, Paju-si (KR)
Assigned to LG Display Co., Ltd., (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Nov. 2, 2023, as Appl. No. 18/386,446.
Application 18/386,446 is a continuation of application No. 17/868,096, filed on Jul. 19, 2022, granted, now 11,842,693.
Claims priority of application No. 10-2021-0105687 (KR), filed on Aug. 10, 2021.
Prior Publication US 2024/0062725 A1, Feb. 22, 2024
Int. Cl. G09G 3/3275 (2016.01); G09G 3/3241 (2016.01); G09G 3/3266 (2016.01)
CPC G09G 3/3275 (2013.01) [G09G 3/3241 (2013.01); G09G 3/3266 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0297 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A light-emitting display apparatus comprising:
a display panel configured to display an image;
a data driving circuit configured to apply a data voltage to the display panel;
a demultiplexer disposed between the data driving circuit and the display panel, which includes a plurality of mux switches;
a mux signal line configured to transmit a mux signal to the plurality of mux switches; and
a signal applying circuit configured to apply a data voltage output from a first channel of the data driving circuit to one of at least two data lines disposed on the display panel,
wherein the signal applying circuit includes a compensation circuit,
wherein the compensation circuit includes a plurality of transistors including a first electrode, a second electrode, and a gate electrode,
wherein the first electrode and the second electrode are connected to a data line transmitting the data voltage, and the gate electrode is connected to a compensation signal line to which a compensation signal is applied,
wherein the plurality of transistors are turned on or turned off simultaneously based on the compensation signal applied through the compensation signal line, and
wherein the plurality of transistors operate opposite to the plurality of mux switches to apply the data voltage,
wherein for each data line, only one transistor among the plurality of transistors is connected to the data line,
wherein, when the plurality of mux switches are turned on in response to a logic-high mux signal to apply the data voltage, the plurality of transistors are turned off in response to a logic-low compensation signal,
when the plurality of mux switches are turned off in response to a logic-low mux signal not to apply the data voltage, the plurality of transistors are turned on in response to a logic-high compensation signal, and
wherein the compensation signal is configured in a form opposite to a form of the mux signal, and is applied in a form that a rising edge, a falling edge, or the rising edge and the falling edge are delayed or advanced.