Ferroelectric Liquid Crystal Pixels with Extremely Small Pixel Pitch for Holographic Displays

We developed a ferroelectric liquid crystal pixel array in which pixels were driven by predesigned stacked two-layered electrodes. Each electrode can independently apply a positive and negative voltage to the designated pixels. The individual pixel driving was successfully confirmed for its pixel pitch as small as 1 x 1 mu m. We observed that 1 x 2-mu m rectangular pixels with the liquid crystal (LC) alignment direction parallel to the shorter side of the pixels showed better resolution than the LC alignment direction parallel to the longer side. Besides, we successfully demonstrated reconstructed holographic images using a 10 k x 10 k array with 1 x 1-mu m pixels, indicating its significant potential for three-dimensional holographic images with a wide viewing-zone angle.