A filter 101 of the present application has flexibility. The filter 101 includes a left protruding portion 102, a right protruding portion 103, a lower protruding portion 104a, a lower protruding portion 104b, and an upper protruding portion 105. The electronic equipment of the present application includes a main portion 2 and a display portion 3. The display portion 3 includes a left groove 11a, a right groove 11b, a lower groove 12a, and a lower groove 12b. The left protruding portion 102 can be inserted in the left groove 11a. The right protruding portion 103 can be inserted in the right groove 11b. The lower protruding portion 104a can be inserted in the lower groove 12a. The lower protruding portion 104b can be inserted in the lower groove 12b. When the filter 101 is mounted on the display portion 3, the upper protruding portion 105 is positioned on the display frame 9. When the filter 101 is attached/detached with respect to the display portion 3, the upper protruding portion 105 is held, and hence, fingerprints can be prevented from adhering to the display surface of the filter 101.