Patent ID: 7586558

Claim:
A direct type backlight unit having a liftable frame structure, said backlight unit comprising: a housing defining a cavity and having at least two first connection elements; at least one lamp being disposed within the cavity and having a conductive electrode for being connected to an external power source; an upper frame defining a recess for accommodating at least one optical film and defining an opening at its bottom for receiving light provided by the lamp, and the upper frame having at least two second connection elements respectively connected with the first connection elements of the housing such that the upper frame is fixed on the housing, and at least two third connection elements; and an outer frame having at least two fourth connection elements respectively connected with the third connection elements of the upper frame such that the outer frame is fixed on the upper frame; wherein one of the third and fourth connection elements are connection holes and the other are clip members for engaging with the connection holes; wherein the first connection elements are formed integrally with the housing and the second connection elements are formed integrally with the upper frame; and wherein the lamp includes a glass tube, and has a foggy region formed thereon by a film attached to an outer surface of the glass tube.