摘要:
A microelectronic assembly includes a first substrate having a surface and a first conductive element and a second substrate having a surface and a second conductive element. The assembly further includes an electrically conductive alloy mass joined to the first and second conductive elements. First and second materials of the alloy mass each have a melting point lower than a melting point of the alloy. A concentration of the first material varies in concentration from a relatively higher amount at a location disposed toward the first conductive element to a relatively lower amount toward the second conductive element, and a concentration of the second material varies in concentration from a relatively higher amount at a location disposed toward the second conductive element to a relatively lower amount toward the first conductive element.
摘要:
Some embodiments include methods of forming interconnects through semiconductor substrates. An opening may be formed to extend partway through a semiconductor substrate, and part of an interconnect may be formed within the opening. Another opening may be formed to extend from a second side of the substrate to the first part of the interconnect, and another part of the interconnect may be formed within such opening. Some embodiments include semiconductor constructions having a first part of a through-substrate interconnect extending partially through a semiconductor substrate from a first side of the substrate; and having a second part of the through-substrate interconnect extending from a second side of the substrate and having multiple separate electrically conductive fingers that all extend to the first part of the interconnect.
摘要:
Integrated circuit chips and chip packages are disclosed that include an over-passivation scheme at a top of the integrated circuit chip and a bottom scheme at a bottom of the integrated circuit chip using a top post-passivation technology and a bottom structure technology. The integrated circuit chips can be connected to an external circuit or structure, such as ball-grid-array (BGA) substrate, printed circuit board, semiconductor chip, metal substrate, glass substrate or ceramic substrate, through the over-passivation scheme or the bottom scheme. Related fabrication techniques are described.
摘要:
The wire bond structure of sophisticated metallization systems, for instance based on copper, may be provided without a terminal aluminum layer and without any passivation layers for exposed copper surfaces (212S) by providing a fill material (250) after the wire bonding process in order to encapsulate at least the sensitive metal surfaces (212S) and a portion of the bond wire (230). Hence, significant cost reduction, reduced cycle times and a reduction of the required process steps may be accomplished independently from the wire bond materials used. Thus, integrated circuits requiring a sophisticated metallization system may be connected by wire bonding to the corresponding package (260) or carrier substrate with a required degree of reliability based on a corresponding fill material (250) for encapsulating at least the sensitive metal surfaces (212S).
摘要:
A metal structure for a contact pad of an integrated circuit (IC), which has copper interconnecting metallization (311). A portion (301) of this metallization is exposed to provide a contact pad to the IC. A conductive barrier layer (330) is positioned on the exposed portion of the copper metallization. A plug (350) of bondable metal, preferably aluminum between about 0.4 and 1.4 µm thick, is positioned on the barrier layer. A protective overcoat layer (320) surrounds the plug and has a thickness (320b) so that the exposed surface (322) of the plug lies at or below the exposed surface (320a) of the overcoat layer. Optionally, a portion (321) of the overcoat layer between about 0.1 and 0.3µm wide may overlap the perimeter of the plug.
摘要:
The present invention includes a method of providing a first substrate; forming an insulator over the first substrate; forming an opening in the insulator; forming a conductor over the insulator and in the opening; removing the conductor over the insulator with a first chemical-mechanical polish process to leave the conductor in the opening; and reducing thickness of the insulator with a second chemical-mechanical process to permit the conductor in the opening to protrude. The present invention further includes a structure having such a conductor that protrudes.
摘要:
The invention relates to a contact connector which forms an electrical contact between the wiring and the connecting wires on the semiconductor component. According to the invention, the contact connector has the advantage that, even when the second electrical conducting element is damaged during the bonding or the application of measuring needles, this does not lead to damage to the first electrical conducting element, due to the fact that the vertical projection of the bonding surface on the first insulation, in which the first electrical conducting element is embedded, is arranged next to the first electrical conducting element and thus the first electrical conducting element is not cut as the pressure of the measuring needles or the pressure occurring during the bonding process is taken by the first insulation.
摘要:
Process for producing a structure by direct adhesive bonding of two elements comprising the production of the elements to be assembled and the assembly of said elements, in which the production of the elements to be assembled comprises the steps: - deposition on a substrate of a TiN layer by physical vapour deposition, - deposition of a copper layer on the TiN layer, and in which the assembly of said elements comprises the steps: - polishing the surfaces of the copper layers intended to come into contact so that they have a roughness of less than 1 nm RMS and hydrophilic properties, - bringing said surfaces into contact, - storing said structure at atmospheric pressure and at ambient temperature.