COMPOSITE LIGHT SYSTEM FOR USE IN ULTRATHIN LIGHTING DEVICES AND BACK LIGHT UNITS

摘要

The invention relates to an improved light guide sheet for out-coupling light in a planar manner on the basis of an at least five-layer novel structure. It is possible in particular to in-couple light from micro LEDs and to out-couple the light again in a both highly uniform and efficient manner by means of said novel structure. In particular, the light guide sheet consists of layers A, B, and C and colorless thermoplasts or reactive hotmelts which are printed in a structured manner and lie between said layers. There is no direct solid connection between the reflector film and the transparent panel.