Lg Display Co., Ltd.

Ki Won Son

Seok Noh

Ki Min Son

Bum Sik Kim

Kil Hwan Oh

Seo Jun Yeom

Hye Min Park

Hun Ki Shin

The present disclosure is directed to a gate driver circuit configured to prevent a light-emitting element of a display device from emitting light in a sensing mode. The gate driver circuit allows a plurality of scan lines of the display device being concurrently sensed by pre-charging a node of the gate driver circuit prior starting a sensing mode. The present disclosure provides the benefit of sensing a greater number of pixels of a display in a shorter time while also ensuring that a sufficient charge is provided by the pre-charged node for a plurality of pixels of the plurality of scan lines to be sensed concurrently.

Gate driver and display device using the same

A gate driver according to an embodiment and a display device using the same are discussed. The gate driver can output a gate signal to a pixel circuit having a driving element connected between a first power line and a first node, a light-emitting element connected between the first node and a second power line, and a switching element connected between the first node and a third power line and driven by the gate signal. The gate driver includes a first circuit unit to receive a carry signal from a previous signal transmission unit to charge or discharge a first control node and a second control node, and a second circuit unit having a first buffer transistor and a second buffer transistor configured to output the gate signal based on a first clock signal and a first low potential voltage according to potentials of the first and second control nodes.

An organic light emitting display including a display panel having pixels coupled to data lines and first power voltage lines. Each of the pixels includes an organic light emitting diode; a driving transistor coupled to the organic light emitting diode and the first power voltage lines; a first transistor coupled to the data lines and a gate electrode of the driving transistor; a second transistor configured to supply a reference voltage of the data lines to a source electrode of the driving transistor; and a capacitor coupled to the gate and source electrodes of the driving transistor.

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Paju-si, South Korea

Ki Won Son