PLANAR LIGHT SOURCE DEVICE HAVING LIGHT GUIDE PLATE WITH REFLECTIVE MEMBER

摘要

A highly reflective white layer (101) is formed in such a way as to enclose an LED at both ends of the light incident end face of a color mixing region (R1) on a light guide plate. Alternately, a highly reflective white layer (103) is formed on the edge of a projecting portion (102) that is drafted of the same material as the light guide plate and projected outward in such a way as to enclose the LED at both ends of the light incident end face of the color mixing region (R1) on the light guide plate. In another alternative, a highly reflective mirror surface (105) comprising a thin metallic layer of silver (Ag) or Aluminum (Al), for example, is formed on the edge of a projecting portion (104) that is drafted of the same material as the light guide plate and projected outward in such a way as to enclose the LED at both ends of the light incident end face of the color mixing region (R1) on the light guide plate.