Flexible display device
A flexible display device including; a base film; a display sheet formed over the base film; and a structural pattern formed below the base film for moving a neutral plane with respect to a bending stress applied to the display sheet to a layer having relatively low rupture point among the layers consisting of the display sheet. The neutral plane is moved to a layer having a relative low rupture point in a flexible display device by forming the structural patterns so that the bending stress applying to the layer having a relative low rupture point can be minimized.
1. A flexible display device comprising:
a base film having a first surface and a second surface opposite to the first surface;
a display sheet formed on the first surface of the base film and including a plurality of layers which have different rupture points; and
a structural pattern having
a remaining layer formed on the second surface of the base film and
a plurality of patterns protruded from the remaining layer and formed with same material as the remaining layer,
wherein each of the plurality of patterns has a triangle-shaped cross-section,
wherein the each of the plurality of patterns has a bottom formed on the remaining layer and spaced apart from a bottom of an adjacent pattern,
wherein the plurality of patterns are arranged on the second surface such that a layer of the display sheet which has the lowest rupture point has no stress thereon when the display sheet is bent.
2. The flexible display device of claim 1 , further comprising an adhering layer formed between the base film and the display sheet for bonding the base film and the display sheet.