Patent ID: 7011443

Claim:
A backlight module, comprising: a stack assembly including a supporting frame, a reflecting plate and a light guiding plate, wherein said supporting frame includes at least one engaging element and two opposite side walls with a recess at each end thereof, and wherein said reflecting plate and said light guiding plate are placed between said side walls; at least one optical film placed on said stack assembly; at least one lamp assembly accommodated at one side portion of said light guiding plate; and at least one side fixing frame disposed at a side of said stack assembly where said lamp assembly is accommodated, wherein said side fixing frame includes a groove for containing said lamp assembly and clamping said stack assembly, at least one counterpart of said engaging element engaged with said engaging element, and a protrusion at each end thereof engaged with said recess; and wherein said side fixing frame fastens said stack assembly and in combination with said optical film constitutes said backlight module.