Side-light type light guide plate assembly and backlight module

A side-light type backlight module, wherein the side-light type backlight module comprises:

• a light guide plate (LGP) having a lower surface, a light output surface opposite to the lower surface, and at least one light input side surface connected between the lower surface and the light output surface;
• at least one reflector sheet correspondingly disposed on at least one side surface of the LGP except for the light input side surface, wherein a medium layer is defined between the reflector sheet and the LGP, and the refraction index of the medium layer is smaller than or equal to 1.12;
• and
• a light source disposed on one side of the light input side surface and used to provide light which emits into the LGP from the light input side surface;
• wherein the medium layer is an air layer;
• a side of the reflector sheet facing the LGP is mounted with an optical film;
• a side of the optical film facing the LGP is concave and convex;
• the optical film is attached to the LGP by a transparent adhesive layer;
• and the air layer is defined between the optical film and the transparent adhesive layer.

A side-light type light guide plate (LGP) assembly, wherein the side-light type LGP assembly comprises:

• a LGP having a lower surface, a light output surface opposite to the lower surface, and at least one light input side surface connected between the lower surface and the light output surface;
• and
• at least one reflector sheet correspondingly disposed on at least one side surface of the LGP except for the light input side surface, wherein a medium layer is defined between the reflector sheet and the LGP, and the refraction index of the medium layer is smaller than or equal to 1.12;
• wherein the medium layer is an air layer;
• a side of the reflector sheet facing the LGP is mounted with an optical film;
• a side of the optical film facing the LGP is concave and convex;
• the optical film is attached to the LGP by a transparent adhesive layer;
• and the air layer is defined between the optical film and the transparent adhesive layer.