Patent ID: 8730178

Claim:
A touch screen comprising: an upper polarizing plate; a first multi-function unit disposed under the upper polarizing plate and providing a touch sensing function and a light-blocking function, wherein the first multi-function unit has a first circuit layer, a second circuit layer and a shielding layer, the first circuit layer is electrically insulated from the second circuit layer, with at least one of the first and the second circuit layers made of an opaque metal, and the shielding layer disposed under the second circuit layer is made of opaque metal; an upper transparent plate disposed under the first multi-function unit; an LCD-driving unit disposed under the upper transparent plate, wherein the LCD-driving unit composes an upper transparent conductive layer and a lower transparent conductive layer; a liquid crystal layer sandwiched between the upper transparent conductive layer and the lower transparent conductive layer; and a lower transparent plate disposed under the lower transparent conductive layer.