Patent ID: 8125419

Claim:
An electro-optical device comprising: a unit circuit including: a first element section that controls a first electro-optical element to a gradation level corresponding to a level of a data signal, and a second element section that controls a second electro-optical element to a gradation level corresponding to a level of a data signal, the gradation level of the first electro-optical element being lower than the gradation level of the second electro-optical element when data signals having an identical level are applied to the first element section and the second element section; and a signal generating circuit that generates data signals having different levels according to a gradation value specified for the unit circuit, wherein when the gradation value is within a first range, the signal generating circuit applies to the first element section a first data signal whose level is set so that the first electro-optical element is controlled to a gradation level corresponding to the gradation value, and when the gradation value is within a second range higher than the first range, the signal generating circuit applies to the second element section a second data signal whose level is set so that the second electro-optical element is controlled to a gradation level corresponding to the gradation value, and wherein a range of a voltage of the second data signal is narrower than a range of a voltage of the first data signal.