A method for manufacturing a display device, including: a step of applying a first mixture obtained by mixing green quantum dots and a photosensitive resin on a green electron transport layer, an exposure step of pattern-exposing the first mixture to cure a portion of the first mixture, the portion being a green light-emitting layer; a development step of removing an uncured portion of the first mixture and developing the green light-emitting layer; and an etching step of etching the green electron transport layer with an etching solution that is an alkaline solution or an organic solvent using the green light-emitting layer as a mask.