BACK FRAME AND BACKLIGHT SYSTEM

摘要

A back frame (23) and a backlight system (21) for a flat-panel display device (20). The back frame (23) comprises main assembly components (261, 262) and secondary assembly components (235, 236) as well as a support bracket (60) for fixing in place a circuit board (11180). The main assembly components (261, 262) assemble together by means of assembly parts (2611, 2621), said main assembly components (261, 262) being of different heat-conductive materials. The assembly parts (2611, 2621) of the main assembly components (261, 262) are provided with a reinforcing structure. The circuit board (11180), the positioning of which is adjustable, is held in place by means of the support bracket (60). The structural simplicity of the back frame (23) and of the backlight system (21) reduces the cost of the mold for the back frame, favors heat dispersal, helps satisfy requirements for the strength of the back frame (23), and fixes in place the circuit board (11180) while economizing on materials for the back frame (23), thus reducing the cost of the flat-panel display device (20).