摘要:
An integrated circuit die (10) has a copper contact (16, 18), which, upon exposure to the ambient air, forms a native copper oxide. An organic material is applied to the copper contact which reacts with the native copper oxide to form an organic coating (12, 14) on the copper contact in order to prevent further copper oxidation. In this manner, further processing at higher temperatures, such as those greater than 100 degrees Celsius, is not inhibited by excessive copper oxidation. For example, due to the organic coating, the high temperature of the wire bond process does not result in excessive oxidation which would prevent reliable wire bonding. Thus, the formation of the organic coating allows for a reliable and thermal resistance wire bond (32, 34). Alternatively, the organic coating can be formed over exposed copper at any time during the formation of the integrated circuit die to prevent or limit the formation of copper oxidation.
摘要:
A method provides an interconnect structure having enhanced structural support when underlying functional metal layers are insulated with a low modulus dielectric. A first metal layer having a plurality of openings overlies the substrate. A first electrically insulating layer overlies the first metal layer. A second metal layer overlies the first electrically insulating layer, the second metal layer having a plurality of openings. An interconnect pad that defines an interconnect pad area overlies the second metal layer. At least a certain amount of the openings in the two metal layers are aligned to improve structural strength of the interconnect structure. The amount of alignment may differ depending upon the application and materials used. A bond wire connection or conductive bump may be used with the interconnect structure.
摘要:
A method provides an interconnect structure having enhanced structural support when underlying functional metal layers are insulated with a low modulus dielectric. A first metal layer having a plurality of openings overlies the substrate. A first electrically insulating layer overlies the first metal layer. A second metal layer overlies the first electrically insulating layer, the second metal layer having a plurality of openings. An interconnect pad that defines an interconnect pad area overlies the second metal layer. At least a certain amount of the openings in the two metal layers are aligned to improve structural strength of the interconnect structure. The amount of alignment may differ depending upon the application and materials used. A bond wire connection or conductive bump may be used with the interconnect structure.
摘要:
A method of packaging a semiconductor includes providing a support structure. An adhesive layer is formed overlying the support structure and is in contact with the support structure. A plurality of semiconductor die is placed on the adhesive layer. The semiconductor die are laterally separated from each other and have electrical contacts that are in contact with the adhesive layer. A layer of encapsulating material is formed overlying and between the plurality of semiconductor die and has a distribution of filler material. A concentration of the filler material is increased in all areas laterally adjacent each of the plurality of semiconductor die.
摘要:
A method is provided for forming peripheral contacts between a die and a substrate. In accordance with the method, a die (305) is provided which has first and second opposing major surfaces, wherein the first major surface is attached to a substrate (303) having a first group (323) of contact pads disposed thereon, and wherein the second major surface has a second group (311) of contact pads disposed thereon. An electrically conductive pathway (326) is formed between the first and second groups of contacts with an electrically conductive polymeric composition.
摘要:
Methods of forming gold-aluminum electrical interconnects are described. The method may include interposing a diffusion retardant layer between the gold and the aluminum, the diffusion retardant layer including regions containing and regions substantially devoid of a diffusion retardant material; bringing into contact the diffusion retardant layer, the gold, and the aluminum; forming alloys of gold and the diffusion retardant material in regions containing the material and forming gold-aluminum intermetallic compounds in regions substantially devoid of the material; and forming a continuous electrically conducting path between the aluminum and the gold. A structure for gold-aluminum interconnect is provided. The structure may include an aluminum alloy bond pad and a diffusion retardant layer in contact with the bond pad, the diffusion retardant layer including regions containing and regions substantially devoid of a diffusion retardant material. The structure may include a gold free air ball in contact with the diffusion retardant layer.
摘要:
A packaging assembly (30), such as a ball grid array package, is formed which distributes power across an interior region of an integrated circuit die (52) by using an encapsulated patterned leadframe conductor (59) that is disposed over the die (52) and bonded to a plurality of bonding pads (45) formed in a BGA carrier substrate (42) and in the interior die region, thereby electrically coupling the interior die region to an externally provided reference voltage.
摘要:
In some embodiments a method of forming a gold-aluminum electrical interconnect is described. The method may include interposing a diffusion retardant layer between the gold and the aluminum (1002), the diffusion retardant layer including regions containing and regions substantially devoid of a diffusion retardant material; bringing into contact the diffusion retardant layer, the gold, and the aluminum (1004); forming alloys of gold and the diffusion retardant material in regions containing the material (1006) and forming gold-aluminum intermetallic compounds in regions substantially devoid of the material (1008); and forming a continuous electrically conducting path between the aluminum and the gold (1010). In some embodiments, a structure useful in a gold-aluminum interconnect is provided. The structure may include an aluminum alloy bond pad (530) and a diffusion retardant layer (520) in contact with the bond pad, the diffusion retardant layer including regions (522) containing and regions (524) substantially devoid of a diffusion retardant material. The structure may include a gold free air ball (714) in contact with the diffusion retardant layer.
摘要:
A semiconductor package (10) uses a plurality of thermal conductors (56-64) that extend upward within an encapsulant (16) from one or more thermal bond pads (22, 24, 26) on a die (14) to disperse heat. The thermal conductors may be bond wires or conductive stud bumps and do not extend beyond a lateral edge of the die. One or more of the thermal conductors may be looped within the encapsulant and exposed at an upper surface of the encapsulant. In one form a heat spreader (68) is placed overlying the encapsulant for further heat removal. In another form the heat spreader functions as a power or ground terminal directly to points interior to the die via the thermal conductors. Active bond pads may be placed exclusively along the die's periphery or also included within the interior of the die.
摘要:
A packaged integrated circuit has an integrated circuit over a support structure. A plurality of bond wires connected between active terminals of the integrated circuit and the support structure. An encapsulant overlies the support structure, the integrated circuit, and the bond wires. The encapsulant has a first open location in the encapsulant so that a first bond wire is exposed and a second open location in the encapsulant so that a second bond wire is exposed. First and second conductive structures are exposed outside the packaged integrated circuit and are located at the first and second open locations, respectively, and electrically connected to the first and second bond wires, respectively.