A flexible display unit (10, 40) comprising: a flexible display (11, 41); and a flexible frame (100, 400) laminated with the flexible display (11, 41) and including a flexible portion (111, 112, 212) located between a first rigid portion (120, 420') and a second rigid portion (120, 420") and configured to permit the frame to be bent; wherein the flexible portion (111, 112, 212) comprises: a first region comprising a first plurality of holes having a first size; and two second regions (112, 212), each comprising a second plurality of holes having a second size, wherein the two second regions (112, 212) are disposed on both sides of the first region in a lengthwise direction of the flexible frame (100 400), wherein the first size is greater than the second size, wherein the first region is positioned closer to a center axis of the flexible frame than the second region, and wherein an area of the first plurality of holes within a portion of the first region having a particular area is greater than an area of the second plurality of holes within a portion of the second region (112, 212) having the same particular area, wherein the flexible portion (111, 112, 212) is configured such that, when the flexible frame (100, 400) is folded, the first region has a first curvature radius, each of the second regions (112, 212) has a second curvature radius, and a center of the first curvature radius is located in an inner space formed by the folding of the flexible frame (100,400), characterized in that the flexible portion (111, 112, 212) is further configured such that, when the flexible frame (100, 400) is folded, a center (O', O") of the second curvature radius is located in an outer space formed by the folding of the flexible frame (100, 40). a flexible display (11, 41); and a flexible frame (100, 400) laminated with the flexible display (11, 41) and including a flexible portion (111, 112, 212) located between a first rigid portion (120, 420') and a second rigid portion (120, 420") and configured to permit the frame to be bent; wherein the flexible portion (111, 112, 212) comprises: a first region comprising a first plurality of holes having a first size; and two second regions (112, 212), each comprising a second plurality of holes having a second size, wherein the two second regions (112, 212) are disposed on both sides of the first region in a lengthwise direction of the flexible frame (100 400), wherein the first size is greater than the second size, wherein the first region is positioned closer to a center axis of the flexible frame than the second region, and wherein an area of the first plurality of holes within a portion of the first region having a particular area is greater than an area of the second plurality of holes within a portion of the second region (112, 212) having the same particular area, wherein the flexible portion (111, 112, 212) is configured such that, when the flexible frame (100, 400) is folded, the first region has a first curvature radius, each of the second regions (112, 212) has a second curvature radius, and a center of the first curvature radius is located in an inner space formed by the folding of the flexible frame (100,400), characterized in that the flexible portion (111, 112, 212) is further configured such that, when the flexible frame (100, 400) is folded, a center (O', O") of the second curvature radius is located in an outer space formed by the folding of the flexible frame (100, 40). a first region comprising a first plurality of holes having a first size; and two second regions (112, 212), each comprising a second plurality of holes having a second size, wherein the two second regions (112, 212) are disposed on both sides of the first region in a lengthwise direction of the flexible frame (100 400), wherein the first size is greater than the second size, wherein the first region is positioned closer to a center axis of the flexible frame than the second region, and wherein an area of the first plurality of holes within a portion of the first region having a particular area is greater than an area of the second plurality of holes within a portion of the second region (112, 212) having the same particular area, wherein the flexible portion (111, 112, 212) is configured such that, when the flexible frame (100, 400) is folded, the first region has a first curvature radius, each of the second regions (112, 212) has a second curvature radius, and a center of the first curvature radius is located in an inner space formed by the folding of the flexible frame (100,400), characterized in that the flexible portion (111, 112, 212) is further configured such that, when the flexible frame (100, 400) is folded, a center (O', O") of the second curvature radius is located in an outer space formed by the folding of the flexible frame (100, 40).