Patent ID: 7319499

Claim:
A composite structure of an aluminum extrusion external framework of a LCD monitor comprising: an aluminum extrusion front frame cap, an aluminum extrusion back frame cap, and an aluminum extrusion sheathing assembled with one another; and a plurality of movable laminas having adjustable locking positions on the inside of the back frame cap, wherein the front frame cap comprises: two long rims and two short rims connected with one another; vertical trenches and parallel trenches formed on the long and short rims; a right-angled plate securely inserted into each vertical trench; and a plane plate securely inserted into each parallel trench such that the front frame cap is provided with flatness and right-angled form; the back frame cap comprises two long rims and two short rims cut in 45 degrees to connect with one another in pairs, each short rim comprising a plate-receiving trench formed on an abutting surface between the short rims, the plate-receiving trench being constituted by two raised slideways to enable the movable laminas to slide within the plate-receiving trenches, a plurality of orientation holes being formed on the inside of the raised slideways; and a plurality of slideways and a plurality of movable plates mounted inside the backside of the back frame cap, a plurality of insertion holes being formed around the slideways for inserting the movable plates into the insertion holes, a plurality of studs being mounted on the movable plates for holding a printed circuit board, a plurality of screws being applied to fix the movable plates; and a plurality of first screw holes are vertically formed on surfaces of the movable laminas in unequal distance and a plurality of second screw holes are formed corresponding to the raised slideways, metal side frames and front frames being securely connected to the first screw holes to correspond to a plurality of locking holes of the LCD panel such that a plurality of screws can be inserted into the locking holes to fix the LCD panel to the back frame cap.