FLIP-FLOP AND OSCILLATING BEHAVIOR OBTAINED WITH SERIAL CONNECTION OFLIQUID-CRYSTAL BISTABLE OPTICAL-DEVICE PIXELS

An easily operated and compact liquid crystal bistable optical device (LCBOD) can be obtained by adopting internal optical feedback. Since t he structure of the pixel is quite simple, it is easy to connect pixel s in series. When 2 pixels are connected to have a common feedback loo p, a flip-flop behavior with complementary ON-OFF properties can be ob tained. In case of the connection of 3 pixels, a well-regulated oscill ating behavior can be observed and the three oscillating waves of tran smitted light intensity are shifted one-third of the oscillating perio d relative to each other. The waveform and period are investigated for various voltage levels.