Lg Display Co., Ltd.

SeWan Lee

ChungSik Kong

MiHee Shin

Jaesung Yu

Jungsoo Park

HongGyu Han

Juhnsuk Yoo

A display panel includes pixels connected to gate lines, and a gate driver that supplies a gate signal to at least one of the gate lines and includes a plurality of stages. Each stage includes a pull-up transistor to apply a turn-on voltage of a first clock signal to an output terminal responsive to a voltage at a Q-node, a pull-down transistor to apply a turn-off voltage to the output terminal responsive to a voltage at a QB-node that holds the turn-on voltage during a period in which the output terminal is applied the turn-off voltage, and a QB-node control unit to apply the turn-on voltage to the QB-node responsive to the first clock signal and a second clock signal in reverse-phase with the first clock signal. Accordingly, a display panel may include a gate driver that can set, reset, and hold the voltage at a QB-node.

Gate driver and display panel having the same

According to one exemplary embodiment of the present disclosure, the electroluminescent display panel may include a plurality of pixels arranged along a row direction and a column direction, an emission line transmitting an emission signal to the plurality of pixels arranged along the row direction and an emission driving circuit providing an emission signal to the plurality of pixels. The emission driving circuit includes a plurality of emission stages wherein the number of emission stages is more than the number of the plurality of pixels arranged along the column direction. Therefore, the pulse width resolution of the display panel may be enhanced and the low gradation stain may be reduced.

Electroluminescent display panel having the emission driving circuit

A gate driving circuit and an image display device including the gate driving circuit are provided. In some embodiments of the present disclosure, the gate driving circuit includes a plurality of stages configured to sequentially and repeatedly output a plurality of scan pulses having different pulse widths in response to a gate control signal applied from a timing controller and the plurality of stages sequentially generate the plurality of scan pulses having different pulse widths and phase-delayed in response to three-phase clock pulses among the gate control signals and sequentially supply the plurality of scan pulses to gate lines of a display panel to selectively adjust a light emission period or a color display period for each red pixel, green pixel, and blue pixel, thereby improving image quality.

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Seoul, South Korea

SeWan Lee