ANALOG OUTPUT CIRCUIT, DATA SIGNAL LINE DRIVING CIRCUIT, DISPLAY, AND POTENTIAL WRITING METHOD

摘要

A voltage source (V1) whose output impedance is small is connected to a capacitive load (C) through a switch element (SW1) and a voltage source (V2) whose output impedance is large is connected to the capacitive load (C) through a switch element (SW2). A comparator (2) allows the conduction of the switch element (SW1) for the voltage source (V1) to write the potential of an output terminal (N) to the capacitive load (C) until the potential reaches a reference potential (Vref), and allows the conduction of the switch element (SW2) for the voltage source (V2) to write the potential of the output terminal (N) to the capacitive load (C) when the potential exceeds the reference potential (Vref), so as to obtain a predetermined potential.