| 20100034988 | Brightness enhancement film of backlight module - A brightness enhancement film of a backlight module includes a substrate and a plurality of microstructure units. The substrate has an edge having an extension direction. The microstructure units are jointed on a surface of the substrate with the junction areas. The junction areas have different extension directions and different extension lengths. The extension directions and extension lengths of the junction areas are combined to form a resultant vector. An included angle is formed between a direction of the resultant vector and the extension direction of the edge of the substrate, and a range of the included angle is from negative 45 degree to positive 45 degree. | 02-11-2010 |
