Abstract:
An interconnection element (170, 190) is provided for conductive interconnection with another element (172) having at least one of microelectronic devices or wiring thereon. The interconnection element includes a dielectric element (187) having a major surface. A plated metal layer (130, 192) including a plurality of exposed metal posts (130) can project outwardly beyond the major surface (176) of the dielectric element. Some of the metal posts can be electrically insulated from each other by the dielectric element (187). The interconnection element typically includes a plurality of terminals (151) in conductive communication with the metal posts. The terminals can be connected through the dielectric element (187) to the metal posts (130). The posts may be defined by plating a metal (122, 124) onto exposed co-planar surfaces of a mandrel (120) and interior surfaces of openings (102) in a mandrel, after which the mandrel can be removed.
Abstract:
Microelectronic package elements (202) and packages (280) having dielectric layers (220) and methods (100) of fabricating such elements (202) and packages (280) are disclosed. The elements (202) and packages (280) may advantageously be used in microelectronic assemblies having high routing density.
Abstract:
A microelectronic package includes a lower unit 11 OA having a lower unit substrate with conductive features and a top and bottom surface 64, 66. The lower unit IIOA includes., one or more lower unit chips 112A, 132A overlying the top surface 64 of the' lower unit substrate 62 that are electrically connected to the conductive features 68, 70 of the lower unit substrate 62. The microelectronic package also includes an upper unit 110 including an upper unit substrate having conductive features, top and bottom surfaces and a hole extending between such top and bottom surfaces. The upper unit further includes one or more upper unit chips 112, 132 overlying the top surface of the upper unit substrate and electrically connected to the conductive features of the upper unit substrate by connections extending within the hole 76.
Abstract:
Wafer level chip packages including risers (230) having sloped sidewalls (206) and methods of fabricating such chip packages are disclosed. The inventive wafer level chip packages may advantageously be used in various microelectronic assemblies.
Abstract:
A microelectronic element such as an imaging semiconductor chip (72) is packaged by bonding a lid wafer (20') having recesses (32) open to its bottom surface to a device wafer (50) including a plurality of the microelectronic elements or chips, so that the recesses overlie active regions such as imaging regions (58) of the device wafer. Where the devices include microlenses (60) associated with an imaging region of each chip, the microlenses may be received in the recesses. Land regions (24') of the lid wafer may be disposed very close to the top surface (52) of the device wafer, as for example, abutting the top surface of the device wafer or separated from such top surface only by an extremely thin coating of a bonding material such as an adhesive or solder. The bonded lid wafer and device wafer may be severed to form individual units (70) . The top surface (22) of the lid wafer may be precisely parallel with the top surface of the device wafer.
Abstract:
Image sensors (10) are provided having a plurality of photodetectors (22) in a detector layer (20). Optionally, an optically transparent substrate (11) is provided for a rear- illuminated sensor architecture. The photodetectors (22) may be arranged in three or more arrays. Typically, each array is contiguous and is associated with light of a different color and/or wavelength. In addition, the arrays may be coplanar, or, in the alternative, located at increasing distances from a light -receiving surface (12) in an at least partially nonoverlapping manner. Also provided are image sensor packages.
Abstract:
A microelectronic assembly includes a microelectronic element (20), such as a semiconductor wafer or semiconductor chip, having a first surface (22) and contacts (24) accessible at the first surface (22), and a compliant layer (26) overlying the first surface of the microelectronic element, the compliant layer (26) having openings in substantial alignment with the contacts (24) of the microelectronic element. The assembly desirably includes conductive posts (38) overlying the compliant layer (26) and projecting away from the first surface (22) of the microelectronic element (20), the conductive posts (38) being electrically interconnected with the contacts (24) of the microelectronic element (20) by elongated, electrically conductive elements extending between the contacts (24) and the conductive posts (38).
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 assembly includes a first microelectronic element (110, 125) having conductive posts (130) extending from one major surface, and a second microelectronic element (140) which is electrically interconnected with the first microelectronic element by the conductive posts. The interconnected elements may have coordinated functionality, such as where one microelectronic element is a field programmable gate array and the other microelectronic element is a memory device. In a manufacturing process, a transfer substrate (215) is used to transfer solder masses (210') onto the conductive posts or onto contacts on the second microelectronic element. The solder masses are then used to electrically interconnect the conductive posts with the contacts.
Abstract:
A microelectronic package may include front and rear covers (46', 60') overlying the front and rear surfaces of a microelectronic element (22') such as an infrared sensor and spaces between the microelectronic element and the covers to provide thermal isolation. A sensing unit including a microelectronic package may include a reflector (76) spaced from the front cover to provide an analyte space, and the microelectronic element may include an emitter (28) and a detector (30) so that radiation directed from the emitter will be reflected by the sensor to the detector, and such radiation will be affected by the properties of the analyte in the analyte space. Such a unit provides a compact, economical chemical sensor. Other packages include elements such as valves (515, 521) for passing fluids into and out of the spaces within the package itself.