A protective element includes a protective film including a first surface and a second surface opposite to the first surface; a first adhesive layer including an adhesive region on the first surface of the protective film; a first release film on the first adhesive layer; a second adhesive layer on the second surface of the protective film; a second release film on the second adhesive layer; a non-adhesive region located to surround the adhesive region, the non-adhesive region including a non-adhesive layer located between the first adhesive layer and the first release film; and a cutting portion located in the non-adhesive region and, as seen in a cross-sectional view, extending from a top surface of the protective film to a bottom surface of the non-adhesive layer.