Optical device including light modulatoin device and driving method thereof

The present invention relates to an optical device and a driving method that includes an optical modulation device comprising a, more particularly, it relates to a liquid crystal optical device and a driving method comprising a light modulator. Optical device according to one embodiment of the invention comprises a light modulator that is formed on the phase delay plate and the phase delay plate for a display panel, for displaying an image disposed on the display panel, the light modulation apparatus facing each other and the first plate and the second plate and the first plate and the second positioned between the plate and includes a liquid crystal layer comprising a plurality of liquid crystal molecules, the first plate comprising a plurality of unit regions are first including the electrodes and the plurality of lower plate electrode and a first orientation and a second electrode, and the second plate is the top plate electrode and the second orientation includes the, and alignment of the first aligning the alignment direction and the second orientation of the director are each substantially parallel.