Patent ID: 7528637

Claim:
A driver circuit for outputting an output signal corresponding to an input signal given to said driver circuit, comprising: a voltage generating unit for outputting a basic output voltage corresponding to said input signal; a first buffer circuit for outputting an output voltage corresponding to said basic output voltage outputted by said voltage generating unit; a second buffer circuit, of which power consumption is larger than said first buffer circuit, for generating and outputting a voltage corresponding to said output voltage as said output signal; a simulating circuit comprising a simulating buffer circuit for generating a simulated voltage corresponding to said basic output voltage outputted by said voltage generating unit, said simulating buffer circuit having substantially the same characteristic as that of said first buffer circuit; and a controlling unit for controlling said basic output voltage outputted by said voltage generating unit based on said simulated voltage, wherein the basic output voltage is controlled by said controlling unit while the simulated voltage is fed back to said controlling unit, and an output of said voltage generating unit is inputted into said simulating circuit.