Display device

A display device, comprising:

• a display panel, having a display side and a back side opposite to the display side;
• a flexible light guide, comprising a light source portion, a light entrance portion, and a middle portion between the light source portion and the light entrance portion, wherein the middle portion is bent by a bending radius of less than 1 mm so that the light source portion is disposed at the display side of the display panel, and the light entrance portion is disposed on the back side of the display panel, wherein a Young's modulus of the flexible light guide is about 10 to 1000 MPa;
• a light emitting element, disposed adjacent to the light entrance portion of the flexible light guide, wherein a light emitting surface of the light emitting element faces a side edge of the flexible light guide;
• and
• an optical layer, disposed on and in contact with a surface of the light source portion of the flexible light guide, wherein a difference of refractive index between the optical layer and the flexible light guide is in a range of 0.1 to 0.2.