A method of manufacturing a display device includes the steps of: forming a positive type photoresist above a surface of a first transparent substrate having a transistor formed on the surface thereof so as to cover the transistor; radiating a light from a back surface side of the first transparent substrate to the first transparent substrate having the positive type photoresist formed thereabove, for exposing the positive type photoresist; developing the positive type photoresist thus exposed to selectively leave the positive type photoresist located above the transistor, for forming a spacer; and laminating a second transparent substrate above the surface of the first transparent substrate through the spacer.