HOLOGRAPHIC HIGH CONTRAST VIEWING SCREEN EMBEDDED IN A LIQUID CRYSTAL DISPLAY

摘要

Systems and methods for shaping light from a liquid crystal display such that the field of view, including the horizontal and vertical extent, can be determined, in advance by the manufacturer. An LCD device includes a first substrate (10) having a first electrode (20); a light shaping holographic surface relief diffuser (30) connected to said first electrode and having a first orientation and a first refractive index; a liquid crystal (70) adjacent said holographic diffuser, an alignment layer (60) adjacent said liquid crystal and having a second orientation that is substantially orthogonal to said first orientation; and a second substrate (10) having a second electrode (80) connected to said alignment layer, the liquid crystal having a second refractive index that is substantially equal to the first refractive index in the absence of a liquid crystal driving voltage, and varies as a function of such driving voltage.