USER INTERFACE SYSTEM

摘要

PURPOSE: A user interface system is provided to be able to reduce flicker by enabling user to control common electrode voltage level. CONSTITUTION: A user input unit(100) supplies signal to enable a user to control a common electrode voltage(Vcom). A counter unit(200) counts the signal(UserIN) that the user inputs. A voltage distribution unit(300) generates several first reference voltages using a stationary voltage(VIN). A D/A(digital/analog) conversion unit(400) converts the several first reference voltages into analog signals using the output signal(CounterOUT) of the counter unit(200). A buffer unit(500) buffers the output signal(D/A OUT) of the D/A conversion unit(400) and generates the common electrode voltage(Vcom).