PURPOSE: A reflective polarizing film, a manufacturing method thereof, a polarizing plate and a backlight assembly comprising the reflective polarizing film are provided to achieve process simplification and cost reduction by including a reflection layer formed by being drawn on one plane of a transparent base film, and thus to improve luminance of a liquid crystal display device by applying the reflective polarizing film on the polarizing plate and the backlight assembly. CONSTITUTION: A reflective polarizing film comprises a transparent base film and a reflection layer. The reflection layer is formed by being drawn along one direction of the transparent base film. The reflection layer is formed with nano wire particles. More than 80 % of nano wire particles are oriented to have an angle between -10° and 10° for the drawing direction. [Reference numerals] (AA) Direction of the light; (BB) TM polarization; (CC) TE polarization; (DD) Nanowire particle

PURPOSE: Backlight unit and the liquid crystal display apparatus including the same divide 'the semiconductor nanocrystal coated with the first polymer with an excellent affinity' into 'the first polymer and the second polymer which commerciality is superior'. In that way the semiconductor nanocrystal is evenly dispersed within the second polymer. CONSTITUTION: A light conversion layer [light converting layer] (130) is separated from the LED (Light Emitting Diode) light source (110). 'the light which is incoming from the LED light source' is converted into the white light. The white light is emitted to the liquid crystal panel side [LCD (Liquid Crystal Display) panel party]. A light guide plate (120) is located between the LED light source and light conversion layer. The light conversion layer includes the semiconductor nanocrystal [semiconductor nano crystal] and matrix macromolecule [matrix polymer]. The semiconductor nanocrystal is coated with 'the first polymer with an excellent affinity [affination]'. The matrix macromolecule includes 'second polymer with an excellent first polymer and compatibility [consistency]'.

PURPOSE: The back light assembly and the display device including the same are provided to improve the reliability according to the bond of the fixing frame and circuit board and protection against heat characteristic. CONSTITUTION: The circuit board is fixed in the fixing frame. The graphite sheet is positioned between the circuit board and fixing frame. The graphite sheet is adhered to only one side among the fixed frame and circuit board. Support films (520,530) are laminated on at least one page of a graphite layer (510). Adhesive layers (540,550) are coated on the surface of at least one of the support film.