Patent ID: 7064741

Claim:
A light distribution device for an LCD, comprising: a light source for emitting light; a light guide including a light incident surface for receiving said emitted light from said light source, said light incident surface being substantially adjacent to said light source, a first light reflection surface for reflecting a first portion of said emitted light toward said LCD, and a plurality of three-dimensional structures on said first reflection surface for reflecting a second portion of said emitted light toward said LCD; a planar reflection layer having a second light reflection surface underlying and spaced from said first reflection surface, a third portion of said emitted light passing through said first reflection surface and/or said three-dimensional structures to said second reflection surface, said second reflection surface being oriented to reflect said third portion of said light toward said LCD through said first reflection surface; and a plurality of spacers across a face of said second reflection surface between said first and second reflection surfaces to maintain a predetermined spacing there between.