Regulator and organic light emitting diode display using the same

摘要

A regulator and an organic light emitting diode display including the regulator are disclosed. The regulator includes a reference voltage generating unit generating a reference voltage from an input voltage, a voltage division resistor circuit dividing a voltage of an output terminal of the regulator to generate a feedback voltage, a comparator comparing the reference voltage with the feedback voltage, a transistor that is turned on or off based on an output of the comparator and switches on or off the input voltage supplied to the output terminal, and a sink current breaking circuit for discharging a sink current flowing in the output terminal to a ground level voltage source.

主权项

1. A regulator comprising:
a reference voltage generating unit configured to generate a reference voltage from an input voltage; a voltage division resistor circuit configured to divide a voltage of an output terminal of the regulator to generate a feedback voltage; a comparator configured to compare the reference voltage with the feedback voltage; a transistor configured to be turned on or off based on an output of the comparator and switch on or off the input voltage supplied to the output terminal; and a sink current breaking circuit configured to discharge a sink current flowing in the output terminal to a ground level voltage source, wherein the sink current breaking circuit includes a buffer connected between the voltage division resistor circuit and the output terminal, the buffer includes a n-type TFT and a p-type TFT which are connected in an inverter push-pull form, and the p-type TFT is connected between the output terminal and the ground level voltage source and discharges the sink current to the ground level voltage source.