LIGHT SENSING CIRCUIT, CONTROLLING METHOD OF THE SAME, AND TOUCH PANEL COMRPRISING THE LIGHT SENSING CIRCUIT

摘要

PURPOSE: Light sensing circuit, a method for driving the same, and a touch-sensitive panel including the same are provided to constantly maintain the sensitivity of the light sensing circuit regardless of ambient temperature by regulating a time for detecting light according to the ambient temperature. CONSTITUTION: A first scan-driver(530) applies a scanning signal to first scanning lines(Scan[1]-Scan[n]). A data-driver(540) applies a data signal to data lines(D[1]-D[m]). A second scan-driver(550) applies a light collecting signal to second scanning lines(Integ[1]-Integ[n]). An initialization driver(560) applies an initializing signal to the initialization lines(INIT[1]-INIT[n]) of a light sensing circuit. An outputting sensor(570) obtains an amplified current from the light sensing circuit. A temperature sensor(580) detects the ambient temperature of a touch-sensitive panel or the light sensing circuit.