02-02-2012 дата публикации
Номер: US20120026429A1
Принадлежит:
A light-guide apparatus for accompanying an edge light source to form a backlight module for an LCD display includes an upper light-distributing layer, a middle light-guiding layer and a lower reflective layer. The light-guiding layer further defines a light-introducing surface for allowing lights emitted from the edge light source to enter the light-guiding layer. The reflective layer reflects the lights back to the light-guiding layer. A light-exiting surface for allowing at least a portion of the lights to leave the light-guiding layer is defined on the top surface of the light-distributing layer and is perpendicular to the light-introducing surface. The light-distributing layer, the light-guiding layer and the reflective layer are manufactured integrally into a unique piece by a co-extrusion process so as to avoid possible existence of air spacing in between. Three-dimensional micro-structures are constructed on a reflective surface interfacing the reflective layer and the light-guiding layer. 1. A light-guide apparatus with micro-structure , for accompanying an edge light source , comprising:a light-guiding layer, further defining a light-introducing surface for allowing entrance of lights from the edge light source into the light-guiding layer;a reflective layer for reflecting the lights back to the light-guiding layer; anda light-distributing layer, to sandwich the light-guiding layer in between with the reflective layer, further defining thereof a free surface opposing to the reflective layer as a light-exiting surface, the light-exiting surface being perpendicular to the light-introducing surface for allowing at least a portion of the lights in the light-guiding layer to leave the light-guide apparatus therefrom;the light-guide apparatus characterized on that:the reflective layer, the light-guiding layer and the light-distributing layer are manufactured integrally into a unique piece by a co-extrusion process so as to avoid possible existence of an air ...
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