Patent ID: 7479941

Claim:
A display element drive apparatus for driving a display element formed on a display panel, comprising: a first comparator having a positive-phase input terminal and a negative-phase input terminal, wherein a differential signal includes a pair of a first clock signal and a second clock signal, the first clock signal is input to the positive-phase input terminal, and the second clock signal is input to the negative-phase input terminal, and a voltage signal corresponding to a potential difference between the first clock signal and the second clock signal is output as a first reference clock signal; a second comparator having a positive-phase input terminal and a negative-phase input terminal, wherein the second clock signal is input to the positive-phase input terminal and the first clock signal is input to the negative-phase input terminal, and a voltage signal corresponding to a potential difference between the second clock signal and the first clock signal is output as a second reference clock signal; a first hold circuit of holding a data signal input in synchronization with the first reference clock signal; a second hold circuit of holding a data signal input in synchronization with the second reference clock signal; a third comparator, wherein a differential signal includes a pair of a first data signal and a second data signal, and a voltage signal corresponding to a potential difference between the first data signal and the second data signal is output as the data signal; and a delay circuit of delaying the data signal output by the third comparator, wherein the first hold circuit receives the data signal delayed by the delay circuit, and the second hold circuit receives the data signal delayed by the delay circuit.