Patent ID: 6995516

Claim:
A drive circuit for driving a device, wherein the drive circuit comprises a circuit which outputs a driving signal having a driving waveform whose pulse width is controlled in a unit of slot width Δt and whose level in each slot is predetermined as one of A 1 to A n , where n is an integer equal to or larger than 2, and A 1 <A 2 <. . . <A n , A 1 to A n correspond to non-zero gradation levels, and wherein in the circuit, the driving waveform has a rising portion up to a predetermined level A k , where k indicates an integer equal to or larger than 2 and equal to or smaller than n, through a level corresponding to a non-zero gradation level smaller than A k from level A 1 to a level A k−1 in order at least by one slot, and a falling portion from the predetermined level A k through a level corresponding to a non-zero gradation level smaller than A k from the level A k−1 to the level A 1 in order at least by one slot.