Provided is a button complex structure including: a display panel including a first substrate, a second substrate on the first substrate, and a liquid crystal layer between the first substrate and the second substrate; a member on the second substrate; a first coupling member coupling the display panel and one surface of the member; a button structure disposed on the other surface that is opposite to the one surface of the member; and a second coupling member coupling the other surface of the member and the button structure, wherein the member includes a third substrate and a touch layer on the third substrate, the touch layer includes the one surface of the member, the touch layer is coupled to the display panel by the first coupling member, the button structure is directly coupled to the third substrate by the second coupling member, and the button structure includes a transparent conductive material.