An edge lighting back light unit (BLU) includes at least a point illuminant, a light guide unit, and a light guide plate. The light guide unit includes a plurality of micro-structures for breaking the total reflection inside the light guide unit to generate a uniform linear light illuminating outside...http://www.google.de/patents/US20100033988?utm_source=gb-gplus-sharePatent US20100033988 - EDGE LIGHTING BACK LIGHT UNIT
