Liquid crystal display panel having a phase grating formed of liquid crystal molecules

摘要: A liquid crystal display panel includes a first substrate and second substrate, at least one of which possesses light transmissivity, each having an electrode layer formed thereon, the layers confronting other, sandwiched between divided into plural regions, including molecules. The molecules are oriented in same direction different regions located two adjacent regions. spaced regular periodicity. Without electric field applied to layer, orientations create differences refractive indices is transmitted so as serve phase grating diffracts incident light. When applied, difference decreases, not diffracted but propagates through panel. may be incorporated projection apparatus source lens.