| 摘要 |
<p>A viewing surface (10) in the form of a passive liquid crystal display (22) or front projection viewing screen (70, 80) includes a substrate layer of material having a front side (32) and a back side (36). A light shaping micro-sculpted surface structure (34) is provided on one side of the substrate layer (30) wherein the microstructure controls the directionality, gain, homogeneity and shape distribution of the light propagated by the screen or display. A reflective layer (38) is deposited on the opposite back side (36) of the substrate layer (30) and reflects light incident upon the substrate layer back through the substrate layer (30) toward a viewing screen surface (10). This type of construction can be used directly as a viewing screen (70, 80) or can be utilized behind a display (22) such as a liquid crystal display in order to significantly enhance the brightness of such a display or screen. The microstructure (34, 104) can be integral on either the front side (32) of the substrate layer (30) or beneath the reflective layer (106) on the back side of the layer (102).</p> |
