This part is a kind of semiconductor called RT8901.

Function of this product has 35V Gate Pulse Modulator.

Manufacturers : Richtek

Image and pinout :

Some of the text within the PDF file :

® RT8901 35V Gate Pulse Modulator for LCD Panels General Description The Gate Pulse Modulator (GPM) is specially designed for the application of gate driver in TFT LCD panels. The GPM is controlled by frame signals from timing controller to modulate the Gate-On voltage that acts a flicker compensation circuit to reduce the coupling effect between gate lines and pixels. It also can delay the Gate-On voltage while power-on for achieving a correct power-on-sequence for gate driver ICs. Both of the delay time for flicker compensation and power-on-sequence are programmable by external resistors and capacitors. Features  Flicker Compensation Circuit  Reduction of Coupling Effect Between Gate Line and Pixel  Programmable Power Sequence for Gate Driver IC  Operation from 20V to 35V [ ... ]

RT8901 PDF Datasheet Download