Lg Display Co., Ltd.

O Hyun Kim

Hoon Ju Chung

Myoung Hoon Jung

Young Ju Park

Byeong Koo Kim

An organic light-emitting diode display device includes a first switch element turned-on in response to a first scanning signal during a first period to supply a data to a first node, and then maintaining an off-state during a second period, a driving device adjusting a current through an organic light-emitting diode element in accordance with a voltage of the first node; a reference voltage source providing a reference voltage that is capable of turning-off the driving device, a second switch element maintaining an off-state during the first period, and turned-on during the second period to supply the reference voltage to the first node, and a storage capacitor maintaining the voltage at the first node.

Organic light-emitting diode display device and driving method thereof

An organic light-emitting diode display device and driving method thereof are provided. The organic light-emitting diode display device including a driving voltage source; a reference voltage source that generates a reference voltage; a reference current source; and a storage capacitor connected between a first node and a second node. An organic light-emitting diode device is connected between a third node and a ground voltage source. A first scanning signal is supplied to a first scan line. A second scanning signal is supplied to a second scan line, the second scanning signal having an inverse-phase against the first scanning signal.

An organic light-emitting device includes a first transistor for applying a data voltage; a second transistor for applying a driving current depending on the data voltage and an initiation voltage to an organic light-emitting diode; a third transistor for generating a threshold voltage; a fourth transistor for applying an initiation voltage, the fourth transistor being connected to the third transistor; a fifth transistor for applying a power voltage; and a condenser provided between a first node connected to the third and fifth transistors and a second node connected to the first and second transistors, for maintaining the power voltage and the threshold voltage for compensation.

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Gyeongsangbuk-do, South Korea

O Hyun Kim