Light guide plate structure with inlaid block-shaped light scattering elements protruding out bottom and back light module

A back light for a display, comprising:

• a light guide plate structure, comprising:
• a light guide plate, comprising at least one light incident surface, a light scattering surface, and a light emitting surface, wherein the light incident surface is on a sidewall of the light guide plate, the light scattering surface is on a bottom surface of the light guide plate, and the light emitting surface is on a top surface of the light guide plate, and wherein the light scattering surface has a plurality of notches;
• a plurality of solid block-shaped transparent element structures disposed within the plurality of notches, wherein a refractive index of the plurality of transparent element structures is different from that of the light guide plate, and wherein the plurality of transparent element structures includes at least one surface that is outside of the plurality of notches and outside of the light guide plate structure;
• and
• a linear light source next to the light incident surface of the light guide plate.

A back light module, comprising:

• a plurality of block-shaped solid and transparent elements attached to inside notches formed on a bottom surface of a light guide plate, wherein the transparent elements have a refractive index different from a refractive index for the light guide plate, and wherein the plurality of transparent elements include at least one surface extending outside of the plurality of notches and outside of the light guide plate;
• means for scattering a light against the bottom surface of the light guide plate;
• and
• means for emitting the scattered light up through a top surface of the light guide plate.