TOUCH SCREEN AND METHOD FOR CALCULATING LOCATION OF TOUCH INPUT OF THE SAME

摘要

PURPOSE: A touch screen and a method for calculating a touch location of the touch screen are provided to calculate each coordinate information of two points where there is multi touch. CONSTITUTION: In case there is a touch event, a single/multi touch identifying unit(220) measures a current of a first resistance wire unit. In case a measured current level is smaller than a reference level, the single/multi touch identifying unit determines touch as single touch. In case the level of the measured current is greater than the level of the reference current, the single/multi touch identifying unit determines the touch as the multi touch. A coordinate information calculating unit(230) calculates coordinate information of the singled touched first point. [Reference numerals] (100) Touch panel; (210) Touch detecting unit; (220) Single/multi touch identifying unit; (230) Coordinate information calculating unit; (300) Driving unit