PURPOSE: A liquid crystal dispenser is provided to shorten the time taken for connecting and separating a cylinder assembly to a supporting assembly by attaching and detaching the cylinder assembly to and from the supporting assembly. CONSTITUTION: A cylinder assembly(300) is attached to and detached from a supporting assembly, and a piston(400) is installed in the cylinder assembly and allows the rotation and vertical movement in a pumping hole. A driving unit is coupled to the piston and allows the attachment and detachment to and from the piston. The driving unit allows the rotation and the vertical movement of the piston.
