The disclosure relates to an adhesive layer having different rigidities corresponding to a transformable area and a non-transformable area of a flexible display included in an electronic device. A flexible display is provided. The flexible display includes a display panel including a pixel array in which a plurality of subpixels outputting light of the same wavelength are disposed at a predetermined period, and a front cover disposed on one surface of the display panel, wherein the front cover includes a glass member having a first pattern formed by a plurality of openings or recesses formed corresponding to a variable region and disposed at a predetermined period, and wherein the first pattern forms an angle of 7 degrees to 38 degrees with respect to the pixel array.