Patent ID: 8269732

Claim:
A portable terminal comprising: a display; and a touch panel disposed on the display and configured to detect a touch input, the touch panel including: a first transparent film having an upper surface and a lower surface; a first transparent electrode layer disposed at the upper surface of the first transparent film, the first transparent electrode layer having a first refractivity; a second transparent film having an upper surface and a lower surface; a second transparent electrode layer disposed at the lower surface of the second transparent film, the second transparent electrode layer having a second refractivity, the second transparent film being configured to overlap the first transparent film with a gap therebetween such that the first transparent electrode layer and the second transparent electrode layer face each other; a deformable optical layer having a refractivity higher than that of air, filling the gap completely between the first transparent film and the second transparent film, and contacting the first and second transparent electrode layers, the deformable optical layer being configured to reduce the difference between the first refractivity of the first transparent electrode layer and a refractivity of the gap and to reduce the difference between the second refractivity of the second transparent electrode layer and the refractivity of the gap; and protruded portions formed at the first transparent electrode layer and the second transparent electrode layer, respectively, such that the first and second transparent electrode layers electrically contact each other with a lower resistance applied by the deformable optical layer when a specific portion of the touch panel is touched to generate pressure, the protruded portions having conductivity, and the protruded portions facing each other so as to be contacted with each other when the touch panel is touched, wherein the protruded portions include a first deposition layer formed by a vacuum-deposition process and a second deposition layer deposited on the first deposition layer to have a corn-shape protruding from the first and second transparent films such that the deformable optical layer around the protruded portions is easily moved aside so as to reduce a resistance caused by the deformable optical layer itself.