An electronic device, according to various embodiments, comprises: a housing structure; a transparent plate coupled to the housing structure, defining an inner space together with the housing structure, and including an inner surface facing the inner space and an outer surface facing away from the inner space; and a decorative structure formed on an inner surface of the transparent plate in a peripheral region of the transparent plate adjacent to a portion of the housing structure. The decorative structure comprises: a first layer formed on the inner surface and including a first transparent or translucent material and a repetitive pattern of first dots in the first transparent or translucent material; and a second layer formed on the first layer and including a second transparent or translucent material and a repetitive pattern of second dots in the second transparent or translucent material, wherein when the transparent plate is viewed from above, the first dots may at least partially overlap with the second dots. Other various embodiments may be possible.