Abstract:
A microelectronic package includes a mounting structure (136), a microelectronic element associated with the mounting structure, and a plurality of conductive posts (146) physically connected to the mounting structure and electrically connected to the microelectronic element. The conductive posts (146) project from the mounting structure (136) in an upward direction (Z), at least one of the conductive posts being an offset post. Each offset post has a base (154) connected to the mounting structure (136), the base of each offset post defining a centroid (156). Each offset post also defines an upper extremity (178) having a centroid (160), the centroid of the upper extremity being offset from the centroid (156) of the base (154) in a horizontal offset direction transverse to the upward direction (Z). The mounting structure (136) is adapted to permit tilting of each offset post about a horizontal axis so that the upper extremities (178) may wipe across a contact pad of an opposing circuit board.
Abstract:
A microelectronic package includes a microelectronic element (80) having faces and contacts (83) and a flexible substrate (90) spaced from and overlying a first face (84) of the microelectronic element (82). The package (80) also includes a plurality of conductive posts (98) extending from the flexible substrate (90) and projecting away from the first face (84) of the microelectronic element (82), wherein at least some of the conductive posts (98) are electrically interconnected with the microelectronic element (82), and a plurality of support elements (88) supporting the flexible substrate (90) over the microelectronic element (82). The conductive posts (98) are offset from the support elements (82) to facilitate flexure of the substrate (90) and movement of the posts (98) relative to the microelectronic element (82).
Abstract:
A connection component (100) for a semiconductor chip includes a substrate (102) having a gap (106) over which extends a plurality of parallel spaced apart leads (120). The ends of the leads (120) are adhered to the substrate either by being bonded to contacts or being embedded in the substrate. The connection component can be formed, in one embodiment, by stitch bonding wire leads (120) across the gap (106). In another embodiment, a prefabricated lead assembly supporting spaced apart parallel leads (120) is juxtaposed and transferred to the substrate (102). The connection component is juxtaposed overlying a semiconductor chip whereby leads extending over the gap (106) may have one end detached and bonded to an underlying chip contact.
Abstract:
A microelectronic package includes a microelectronic element having faces and contacts, and a flexible substrate spaced from and overlying a first face of the microelectronic element, the flexible substrate having conductive pads facing away from the first face of the microelectronic element. The package includes a plurality of spheres attached to the conductive pads of the flexible substrate and projecting away from the first face of the microelectronic element, each sphere having a contact surface remote from the conductive pads, the contact surfaces of the spheres including a contact metal devoid of solder. The package also includes a plurality of support elements disposed between the microelectronic element and the substrate for supporting the flexible substrate over the microelectronic element, the spheres being offset from the support elements.
Abstract:
A microelectronic package (90) includes a microelectronic element (62) having faces, contacts and an outer perimeter, and a flexible substrate (42) overlying and spaced from a first face of the Microelectronic element (62), an outer region (86) of the flexible substrate (42) extending beyond the outer perimeter of the Microelectronic element (62). The package (90) includes a plurality of conductive posts (40a-40f) exposed at a surface of the flexible substrate (42) and being electrically interconnected with the microelectronic element (62), whereby at least one of the conductive posts (40a-40f) is disposed in the outer region (86) of the flexible substrate (42), and a compliant layer (74) disposed between the first face of the microelectronic element (62) and the flexible substrate (42), wherein the compliant layer (74) overlies the at least one of the conductive posts that is disposed in the outer region (86) of the flexible substrate (42). The package includes a support element (84) in contact with the microelectronic element (62) and the compliant layer (74), whereby the support element 84 overlies the outer region (86) of the flexible substrate (42).
Abstract:
As disclosed herein, structures and methods are provided for forming capped chips. As provided by the disclosed method, a metal base pattern (26) is formed on a chip (8) insulated from wiring (11) of the chip, and a cap (42) is formed including a metal. The cap (42) is joined to the metal base pattern (26) on the chip to form the capped chip (48). In one embodiment, a front surface (9) of the chip is exposed which extends from a contact (14) or (16) of the chip to an edge (13) of the chip (8). In another embodiment, a conductive connection is formed to the contact (14) or (16), the conductive connection extending from the contact to a terminal (46) at an exposed plane (49) above the front surface (9) of the chip (8).
Abstract:
A radio frequency chip package is formed by assembling a connecting element such as a circuit board (52) or flexible circuit tape having chips (72, 84) thereon with a bottom plane element (20) such as a lead frame incorporating a large thermally-conductive plate (22) and leads (40, 42) projecting upwardly from the plane of the plate. The assembly step places the rear surfaces (78) of the chips (72) on the bottom side of the connecting element (52) into proximity with the thermal conductor (22) and joins the conductive traces (60) on the connecting element with the leads. The resulting assembly is encapsulated, leaving terminals at the bottom ends (45) of the leads exposed. The encapsulated assembly may be surface-mounted to a circuit board (102). The leads (40, 42) provide robust electrical connections between the connecting element (52) and the circuit board (102).