Abstract: A diffuser for a backlight unit of a display device including a base film, a first diffusion layer including a first resin and a plurality of first diffusion particles, and being formed on an upper surface of the base film, and a second diffusion layer including a second resin and a plurality of second diffusion particles, and being formed on a lower surface of the base film. Further, the plurality of first diffusion particles are contained within the first resin such that an upper surface of the first diffusion layer is substantially flat.

Abstract: The present invention relates to a thermal spreading sheet with superior ductility and strength, and a method for manufacturing the same. One method for manufacturing the thermal spreading sheet according to the present invention comprises the steps of mixing graphite powder and binder; and applying the mixture of graphite powder and binder onto the surface of a reflective sheet to form the thermal spreading sheet with a predetermined thickness. The binder is preferable to contain polyurethane, acrylic or silicon. And, the mixture of graphite powder and binder is preferable to contain copper or silver. Another method for manufacturing the thermal spreading sheet according to the present invention comprises the steps of adding an acrylic resin into a fine graphite particle to form a nano-composite; and compressing the nano-composite at a high temperature.

Abstract: A backlight unit and a display device having heat dissipating layer, and a method for manufacturing the heat dissipating layer are provided. A backlight unit includes a light source for emitting a light; a reflector below the light source for reflecting the light emitted from the light source and absorbing heat generated by the light source; and a heat dissipating layer including thermal conductive particles, the heat dissipating layer being disposed on a first surface of the reflector for dissipating the heat transferred to the reflector.

Abstract: The present invention relates to a prism sheet employed in a backlight unit. The prism sheet according to one embodiment of the present invention comprises a coating layer having a resin transmitting the incident light from the outside; and a plurality of beads contained in the resin and scattering the incident light; a base film disposed on the coating layer and transmitting the light; and a plurality of prisms disposed on the base film, and refracting and condensing the light transmitted from the base film. The prism sheet of the present invention may not be deformed even if the temperature of the backlight unit is increased.

Abstract: The present invention relates to a backlight unit having a polarization film for performing the function of a reflective polarization film. The backlight unit includes a light source, an optical film and a polarization film. The light source emits a light having a certain wavelength. The optical film is located proximate to the light source to transmit the light outputted from the light guiding plate in a certain direction. The polarization film is located proximate to the optical film. Here, the polarization film has a UV curing resin and lines disposed on the UV curing resin, and polarize the light transmitted from the optical film. The backlight unit manufactures the polarization film by using UV curing resin and metal substance, and thus the manufacture period of the polarization film may be reduced. Accordingly, the polarization film may be manufactured in great quantities.

Abstract: A prism sheet of an LCD includes a body part made of a transparent resin material and a plurality of polypyramid-shaped optical unit structures formed in a intaglio type on the body part. The plurality of optical unit structures have intaglio-type polypyramid shapes in an inside of their polygonal structure. A center of the intaglio portion corresponds to a vertex of the polypyramid, thereby forming a point.