An object of the present invention is to improve yield when manufacturing a display device. A method of manufacturing a display device for displaying an image using a display element includes exposing a first surface of a glass substrate o an aqueous solution containing hydrogen fluoride, forming an organic resin film having a polar group above the first surface of the glass substrate, forming a layer including a display element for displaying an image above the organic resin film, and bonding an opposing substrate so as to cover the display element.