A display panel apparatus has a structure which is less likely to seal a planarizing film even when an electrode plate is provided on the planarizing film, and the display panel apparatus includes: a planarizing film formed on a substrate; a pixel formed on the planarizing film and including: a lower electrode; an organic layer; and an upper electrode; an auxiliary electrode electrically insulated from the lower electrode and electrically connected to the upper electrode; a display section including a plurality of the pixels; an electrode plate electrically connected to the auxiliary electrode and arranged to cover the planarizing film outside the display section; and a power supply section electrically connected to the electrode plate, and the electrode plate has a hole exposing a part of a surface of the planarizing film.