Patent ID: 11972728
Assignee: LG DISPLAY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A light emitting display device comprising:
a display panel including a subpixel;
a driver configured to drive the display panel;
an organic light emitting diode disposed in the subpixel and connected with a first power line transmitting a high voltage level;
a first switching transistor configured to write the data voltage;
a second switching transistor configured to initialize the organic light emitting diode;
a capacitor configured to store the data voltage; and
a driving transistor configured to supply driving current for driving the organic light emitting diode;
wherein both ends of the organic light emitting diode are initialized simultaneously with writing the data voltage in the subpixel,
wherein the capacitor has one end directly connected with a gate electrode of the driving transistor and another end directly connected with a second power line transmitting a low voltage level,
wherein the first switching transistor and the second switching transistor are commonly connected to one gate line at gate electrodes of the first and second switching transistors, and
wherein the subpixel comprising:
a first step of initializing both ends of the organic light emitting diode by the first power of the high voltage level simultaneously with storing the data voltage in the capacitor disposed in the subpixel; and
a second step of enabling the organic light emitting diode to emit light based on the driving current generated from the driving transistor,
wherein the first step includes:
turning on a first switching transistor disposed in the subpixel;
turning on a second switching transistor comprised in the subpixel simultaneously with storing a data voltage in the capacitor; and
initializing the both ends of the organic light emitting diode by the first power of the high voltage level, and
wherein the second step includes:
turning off the first switching transistor and the second switching transistor;
driving the driving transistor based on the data voltage; and
enabling the organic light emitting diode to emit light based on the driving current generated from the driving transistor.