Patent ID: 7242220

Claim:
A signal driving device electrically connected with an inverting device, the inverting device receiving a first signal and outputting a first inverted signal, the signal driving device comprising: a first NMOS transistor, the drain of the first NMOS transistor being biased by a first voltage, the gate of the first NMOS transistor receiving a control signal, the control signal and the first signal being substantially of the same phase, the control signal being other than and differing from the first signal; and a second NMOS transistor, the gate of the second NMOS transistor receiving the first inverted signal, the source of the second NMOS transistor being biased by a second voltage, the second voltage being lower than the first voltage; the drain of the second NMOS transistor being electronically coupled to the source of the first NMOS transistor and outputting a second signal, the second signal and the first signal being substantially of the same phase; wherein a high level of the first signal is higher than a high level of the second signal.