Needle assembly of probe unit for testing flat display panel

A needle assembly of a probe unit for examination of flat display panels in which a needle can be easily replaced is disclosed. The needle assembly, installed on a probe block, for transmitting an electric signal between a printed circuit board and pixel electrodes of a flat display panel for the purpose of examination of the flat display panel. The needle assembly includes a needle guide having slits that are opened downwardly and installed on the end of the probe block, and in which a plurality of needles is inserted and fixed, and needle cover blocks pivotally hinged to the probe block, and inserted into the needle guide to support the fixed needles at the lower side of the probe block. The needle cover blocks include needle cover holders pivotally hinged to the probe block, and needle covers pivotally hinged to the needle cover holders and contacting the lower sides of the needles and supporting the needles.