Patent ID: 7808296

Claim:
An image display system, comprising: a level shifter, comprising: a first voltage adjusting circuit for adjusting the voltage of an input signal, which comprises a small signal input terminal receiving the input signal and a differential output terminal outputting a pair of differential signals, wherein voltage ranges of the differential signals are larger than that of the input signal; and a second voltage adjusting circuit coupled to the first voltage adjusting circuit, comprising a first input terminal and a second input terminal respectively receiving the pair of differential signals, wherein the second voltage adjusting circuit adjusts the voltage of the differential signals and generates an output signal, wherein a voltage range of the output signal is larger than that of the differential signals, wherein the first voltage adjusting circuit comprises: a first current source; a second current source; a third voltage adjusting circuit coupled to the second current source for providing a voltage difference; a first resistor coupled between the first current source and a ground; a second resistor coupled between the third voltage adjusting circuit and the ground; and a first transistor coupled to the first current source, the small signal input terminal, and the first resistor for receiving the input signal.