摘要:
Embodiments include devices and methods of their manufacture. A device embodiment includes a package housing, at least one electronic circuit (e.g., a sensor circuit), a first material, and a second material. The package housing includes a cavity that is partially defined by a cavity bottom surface, and the cavity bottom surface includes a mounting area and a non-mounting area. The at least one electronic circuit is attached to the cavity bottom surface over the mounting area. The first material has a relatively high, first modulus of elasticity, and covers the non-mounting area. The second material has a relatively low, second modulus of elasticity, and is disposed over the first material within the cavity.
摘要:
A differential pressure sensor assembly includes a transducer having a first sensing surface and a second sensing surface. The second sensing surface is contained in a cavity. An Integrated Circuit (IC) is hermetically coupled to the transducer. The IC has a first aperture aligned to the cavity. A lead frame is coupled to the IC. The lead frame has a second aperture aligned to the first aperture of the IC. A package encapsulates the transducer, the IC and the lead frame. The package has a third aperture exposed to the first sensing surface. The package includes a molding compound providing a hermetic seal between the third aperture of the package and the first aperture of the IC. The molding compound is separated from the transducer by an encroachment distance.
摘要:
A differential pressure sensor assembly includes a transducer having a first sensing surface and a second sensing surface. The second sensing surface is contained in a cavity. An Integrated Circuit (IC) is hermetically coupled to the transducer. The IC has a first aperture aligned to the cavity. A lead frame is coupled to the IC. The lead frame has a second aperture aligned to the first aperture of the IC. A package encapsulates the transducer, the IC and the lead frame. The package has a third aperture exposed to the first sensing surface. The package includes a molding compound providing a hermetic seal between the third aperture of the package and the first aperture of the IC. The molding compound is separated from the transducer by an encroachment distance.
摘要:
A disclosed integrated circuit (IC) module includes an IC panel and multi level circuit structure, referred to as an IPD structure, overlying an upper surface of the IC panel. The IC panel includes an electrically conductive embedded ground plane (EGP), an integrated circuit (IC) die, and an encapsulating material. The EGP is a substantially planar structure that includes or defines a plurality of cavities. The EGP may include or define an IC cavity and an IPD cavity. The IC die may be positioned within the IC cavity such that a perimeter of the IC cavity surrounds the IC die. The IPD structure may define or include a passive device such as an inductor. The passive device may be positioned or located overlying the void in the EGP.
摘要:
A process for the forming of Al-Cu conductive thin films with reduced electromigration failures is useful, for example, in the metallization of integrated circuits. An improved formation process includes the heat treatment or annealing of the thin film conductor at a temperature within the range of from 200.degree. C. to 300.degree. C. for a time period between 10 minutes and 24 hours under a reducing atmosphere such as 15% H.sub.2 in N.sub.2 by volume. Al-Cu thin films annealed in the single phase region of a phase diagram, to temperatures between 200.degree. C. and 300.degree. C. have .theta.-phase Al.sub.2 Cu precipitates at the grain boundaries continuously become enriched in copper, due, it is theorized, to the formation of a thin coating of .theta.-phase precipitate at the grain boundary. Electromigration behavior of the aluminum is, thus, improved because the .theta.-phase precipitates with copper hinder aluminum diffusion along the grain boundaries. Electromigration, then, occurs mainly within the aluminum grains, a much slower process.
摘要:
An electronic component includes a substrate (210, 1510), a device (221, 222) supported by the substrate and including a first bond pad (223, 224, 225, 226), and a cap (231, 232, 631, 731, 732, 1531, 1532) overlying the substrate. The cap includes a second bond pad (241, 242, 243, 244) at an outside surface of the cap, a third bond pad (245, 246, 247, 248) at an inside surface of the cap and electrically coupled to the first bond pad, and an electrically conductive via (251, 252, 254, 751, 752, 753, 754) extending through the cap and electrically coupling together the second and third bond pads.
摘要:
An apparatus and process for jetting molten solder in the form of balls directly onto all the metallized interconnects lands for a ball grid array package in one step with no solder paste required. Molten solder is jetted out of a grid of holes using a piston attached to a piezoelectric crystal. When voltage is applied to the crystal it expands forcing the piston to extrude a desired volume of solder through holes in the aperture plate. When the voltage is decreased the piston reverses motion creating an instability in the molten solder at the aperture plate surface and thereby forming spherical solder balls that fall onto a metallized substrate. The molten solder balls land on the substrate and form a metallurgical bond with the metallized lands. The size of the solder balls is determined by a combination of the size of the holes in the aperture plate, the duration of the piston pulse, and the displacement of the piston. The layout of the balls is dictated by the location of the hooks in the grid. Changes in ball size and layout can be easily accomplished by changing the grid plate. This invention also allows simple preparation of uniform balls for subsequent supply to BGA users.
摘要:
An electromagnetic interference (EMI) and/or electromagnetic radiation shield is formed on a plurality of encapsulated modules by attaching a plurality of modules (30-33) to a process carrier (10) using a double side adhesive tape (12) before encapsulating the modules with a molding compound (16), and then forming shielding via ring structures (51-54) in the molding compound (16) to surround and shield each module. After removing the adhesive tape (12) to expose a surface of the encapsulated modules, a multi-layer circuit substrate (101) is formed over the exposed surface, where the circuit substrate includes shielding via structures (121-124) that are aligned with and electrically connected to the shielding via ring structures (51-54), thereby encircling and shielding the circuit module(s).
摘要:
A packaged semiconductor device includes an interconnect layer over a first side of a polymer layer, a semiconductor device surrounded on at least three sides by the polymer layer and coupled to the interconnect layer, a first conductive element over a second side of the polymer layer, wherein the second side is opposite the first side, and a connector block within the polymer layer. The connector block has at least one electrical path extending from a first surface of the connector block to a second surface of the connector block. The at least one electrical path electrically couples the interconnect layer to the first conductive element. A method of forming the packaged semiconductor device is also described.
摘要:
Embodiments of inductive communication devices include first and second galvanically isolated IC die. The first IC die has a first coil proximate to a first surface of the first IC die, and the second IC die has a second coil proximate to a first surface of the second IC die. The first and second IC die are arranged so that the first surfaces of the first and second IC die face each other, and the first coil and the second coil are aligned across a gap between the first and second IC die. One or more dielectric components are positioned within the gap directly between the first and second coils. During operation, a first signal is provided to the first coil, and the first coil converts the signal into a time-varying magnetic field. The magnetic field couples with the second coil, which produces a corresponding second signal.