The invention discloses a display panel and a manufacturing method thereof. The display panel comprises a substrate, a light-emitting function layer arranged on the substrate, a thin film packaging layer arranged on the substrate and the light-emitting function layer and covering the light-emitting function layer, a
drying layer located on the substrate and arranged around the thin film packaginglayer, a packaging cover plate arranged on the
drying layer and the thin film packaging layer, and a curing
adhesive layer for fixing the substrate and the packaging cover plate. An annular groove surrounding the
drying layer is formed between the drying layer and the curing
adhesive layer, and a packaging
adhesive layer is arranged in the annular groove. By means of the structural form of the packaging cover plate and the glass
cement, at the same time, by combining the thin film packaging layer, the drying layer and the curing adhesive layer, the mixed packaging of the light-emitting functional layer is achieved, the good water-
oxygen barrier property can be guaranteed, and the good packaging strength is achieved. In addition, through the manufacturing method of forming the packaging adhesive layer between the drying layer and the curing adhesive layer, the size of a channel through which the
water vapor enters the display panel can be effectively controlled, and the method can adaptto the packaging of
OLED display panels of different sizes.