The discharging brush 1 includes a conductive brush unit 11 and a grounding wire 15 connecting the brush unit 11 with a grounding point via a resistor 14. In a discharging device 100, the discharging brush 1 is installed at a conveyance path for conveying a display panel 2, in such a manner that the brush unit 11 is in sliding contact with a terminal 24 formed on a peripheral region of the display panel 2 conveyed along the conveyance path. For example, the resistor 14 has a resistance value equal to or greater than 1 MΩ and equal to or less than 10 MΩ.