Abstract:
Discussed is a manufacturing method of a micro mirror array including forming a mirror surface on a polymer film, bonding a plurality of polymer films, each having the mirror surface formed thereon, cutting the bonded polymer films to manufacture a primary micro mirror array, forming an additional mirror surface on the manufactured primary micro mirror array, bonding a plurality of primary micro mirror arrays, each having the additional mirror surface formed thereon, and cutting the bonded primary micro mirror arrays. The micro mirror array is used to form a high-quality floating image.
Abstract:
Discussed is a backlight unit, including a base substrate; a partition wall on the base substrate and including a plurality of grooves; semiconductor light-emitting devices on the base substrate and in the plurality of grooves, respectively; a phosphor layer defined in each of the plurality of grooves to cover the semiconductor light-emitting devices and absorbs light in a specific wavelength band to emit light in a wavelength band different from the light in the specific wavelength band; a light diffusion layer that above the phosphor layer and diffuses light; and a spacer between the partition wall and the light diffusion layer, wherein the spacer includes: a body part attached to the partition wall; and a protruding part protruding in a direction toward the light diffusion layer and attached to the light diffusion layer, such that the light diffusion layer and the phosphor layer are spaced apart from each other.