Patent ID: 8248388
Filing Date: 2012-08-21
Classification: G06F

Abstract:
1. A touch screen panel comprising: a core including a plurality of horizontal and vertical lines provided in a grid shape, wherein the core has a first refractive index, and an upper surface of the core is exposed to the atmosphere; an intermediate clad formed between each of gaps included in the core, wherein the intermediate clad has a second refractive index which is lower than the first refractive index, and a height of the intermediate clad is identical to a height of the core; an optical source configured to apply an optical signal to an input end of each of the plurality of horizontal and vertical lines; and a plurality of receivers configured to sense an intensity of the optical signal passing through an output end of each of the plurality of horizontal and vertical lines, the optical signal applied by the optical source, wherein a width of the horizontal or vertical lines is increased by a fixed rate at a direction from the input end to the output end whenever passing through the intersection point between the horizontal and vertical lines.