Patent ID: 7405867

Claim:
An optical modulator module comprising: a bendable flexible printed circuit board in which a circuit pattern is formed, and to which control signals are inputted from the outside; an optical modulator element modulating an incident light according to a driving voltage and sending out the modulated light; a transparent substrate through which the incident light and the modulated light pass, and in which a circuit pattern is formed; and a driving integrated circuit electrically connected with the flexible printed circuit board, and supplying the optical modulator element with the driving voltage according to the inputted control signals, wherein the flexible printed circuit board is electrically connected with the transparent substrate, and wherein the optical modulator element and the driving integrated circuit are attached to one side of the flexible printed circuit board, and the transparent substrate is attached to the other side of the flexible printed circuit board in correspondence with a position where the optical modulator element is attached, and a hole, through which the incident light and the modulated light pass, is formed on the part of the flexible printed circuit board to which the optical modulator element is attached.