The present invention provides a display panel and a manufacturing method thereof. The display panel comprises a blue organic light-emitting diode (OLED) layer, a thin film encapsulation layer, and a quantum dot color film layer, wherein a serrated encapsulation layer disposed on a side surface of the quantum dot color film layer near the thin film encapsulation layer. The method for manufacturing the display panel comprises a quantum dot color film layer manufacturing step, a serrated encapsulation layer manufacturing step, a blue OLED layer manufacturing step, and a thin film encapsulation layer manufacturing step. The technical effect of the present invention is that the serrated encapsulation layer is disposed on a surface of the quantum dot color film layer, so that blue light is refracted, optical path of blue light in the quantum dot layer is increased, and light conversion efficiency of blue light is improved.