Lx Semicon Co., Ltd.

Su Jeong Na

Hyung Sub Kim

Jung Hyun Tark

Power management device for driving a display panel is disclosed. In order to achieve the above object, a power management device of operating a display panel may include a first buffer circuit configured to generate and output a first gamma reference voltage in a first section of a frame and generate and output a first touch driving voltage in a second section of the frame; and a second buffer circuit configured to generate and output a second gamma reference voltage in the first section and generate and output a second touch driving voltage in the second section.

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Daejeon, South Korea

Su Jeong Na