Light source device, display device and reflection sheets for use therewith

A display device, comprising:

• a display panel including a plurality of pixels arranged in a matrix, said display panel displaying an image by controlling transmission of light through said plurality of pixels,
• a light source for emitting light;
• a light guide including a light incident surface for receiving said emitted light, 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 display panel, and a plurality of three-dimensional structures on said first reflection surface for reflecting a second portion of said emitted light toward said display panel;
• 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 display panel 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 spacing there between.