CPC H04B 1/3888 (2013.01) [B32B 17/10174 (2013.01); G06F 1/1652 (2013.01); C03C 23/009 (2013.01)] | 11 Claims |
1. A cover window comprising a folding portion and a non-folding portion,
wherein the folding portion comprises an inside surface that is compressed when folding and an outside surface that is stretched when folding,
the folding portion comprises a first layer adjacent to the outside surface, a second layer adjacent to the inside surface, and a third layer between the first layer and the second layer,
the folding portion and the non-folding portion comprise at least one metal ion,
a concentration of the metal ion included in the second layer is higher than a concentration of the metal ion included in the first layer, and
the first layer comprises a plurality of depletion regions.
|