Patent ID: 8561568
Filing Date: 2013-10-22
Classification: G02B

Abstract:
1. An apparatus for manufacturing a light guide film, the light guide film comprising a substrate, a first patterned layer formed on a first side of the substrate, and a second patterned layer formed on an opposing second side of the substrate, the apparatus comprising: a first conveyor roller; a second conveyor roller; a first imprinting roller; a second imprinting roller opposite to the first imprinting roller, the first and second imprinting rollers configured for being respectively arranged on the opposite sides of the substrate; a first coating device positioned on the first side of the substrate between the first conveyor roller and the first imprinting roller for forming a first layer on the first side of the substrate; a second coating device positioned on the second side of the substrate between the first conveyor roller and the second imprinting roller for forming a second layer on the second side of the substrate; a first solidifying device positioned between the first imprinting roller and the second conveyor roller; a second solidifying device positioned between the second imprinting roller and the second conveyor roller; a first template having a first imprinting pattern comprising an array of through holes, the first template fixed on a circumferential surface of the first imprinting roller for imprinting cylindrical protrusions in the first layer; and a second template having a second imprinting pattern comprising an array of protrusions, the second template fixed on a circumferential surface of the second imprinting roller, for simultaneously imprinting cavities aligned with the cylindrical protrusions in the first layer;