We have investigated the Young’s interference experiment using a self-aligned liquid crystal optical control device. This device can be operated by changing the control of the optical phase of the liquid crystal, and we have observed the change in the interference state between right and left position of the slit. To reduce the problem of stray light, the electrode structure was selfaligned, and the alignment of the liquid crystal director was closely changed. As a result, observed voltage change between without and voltage application, the logically ‘NOT’ operation was achieved at the Sinc function.
