Patent ID: 6890186

Claim:
A socket structure for grid array (GA) packages, mounted on a printed circuit board (PCB) for retaining a package, comprising: a frame; a flexible chassis assembly, situated inside the frame for electrically connecting the package and the PCB, comprising: a cushion pad; an inner base plate, underneath the cushion pad; a flex-board, for encompassing the cushion pad and the inner base plate; two solder mask layers, formed on a surface of the flex-board and having a interconnect layer there under; a plurality of bumps, formed on the topside of the flexible chassis assembly and electrically connected to the package; and a plurality of solder balls, formed on the bottom side of the flexible chassis assembly and electrically connected to the PCB; a first hinge cover lid, situated and pivoting on the frame by a first hinge pin and a second hinge pin; and a second hinge cover lid, situated and pivoting on the frame by a third hinge pin and a fourth hinge pin.