摘要:
Dendrimer/hyperbranched materials are combined with polyimide to form a low CTE material for use as a dielectric substrate layer or an underfill. In the alternative, ruthenium carbene complexes are used to catalyze ROMP cross-linking reactions in polyimides to produce a class of cross-linkable, thermal and mechanical stable material for use as a dielectric substrate or underfill. In another alternative, dendrimers/hyperbranched materials are synthesized by different methods to produce low viscosity, high Tg, fast curing, mechanically and chemically stable materials for imprinting applications.
摘要:
Dendrimer/hyperbranched materials are combined with polyimide to form a low CTE material for use as a dielectric substrate layer or an underfill. In the alternative, ruthenium carbene complexes are used to catalyze ROMP cross-linking reactions in polyimides to produce a class of cross-linkable, thermal and mechanical stable material for use as a dielectric substrate or underfill. In another alternative, dendrimers/hyperbranched materials are synthesized by different methods to produce low viscosity, high Tg, fast curing, mechanically and chemically stable materials for imprinting applications.
摘要:
Dendrimer/hyperbranched materials are combined with polyimide to form a low CTE material for use as a dielectric substrate layer or an underfill. In the alternative, ruthenium carbene complexes are used to catalyze ROMP cross-linking reactions in polyimides to produce a class of cross-linkable, thermal and mechanical stable material for use as a dielectric substrate or underfill. In another alternative, dendrimers/hyperbranched materials are synthesized by different methods to produce low viscosity, high Tg, fast curing, mechanically and chemically stable materials for imprinting applications.
摘要:
Dendrimer/hyperbranched materials are combined with polyimide to form a low CTE material for use as a dielectric substrate layer or an underfill. In the alternative, ruthenium carbene complexes are used to catalyze ROMP cross-linking reactions in polyimides to produce a class of cross-linkable, thermal and mechanical stable material for use as a dielectric substrate or underfill. In another alternative, dendrimers/hyperbranched materials are synthesized by different methods to produce low viscosity, high Tg, fast curing, mechanically and chemically stable materials for imprinting applications.
摘要:
Dendrimer/hyperbranched materials are combined with polyimide to form a low CTE material for use as a dielectric substrate layer or an underfill. In the alternative, ruthenium carbene complexes are used to catalyze ROMP cross-linking reactions in polyimides to produce a class of cross-linkable, thermal and mechanical stable material for use as a dielectric substrate or underfill. In another alternative, dendrimers/hyperbranched materials are synthesized by different methods to produce low viscosity, high Tg, fast curing, mechanically and chemically stable materials for imprinting applications.
摘要:
This disclosure relates generally to a wafer having a plurality of semiconductor chips having a major surface, a metal contact positioned on one of the plurality of semiconductor chips and having a side surface and contact surface, the contact surface substantially parallel to the major surface, wherein the contact surface defines a thickness of the metal contact relative to the major surface, an underfill layer abutting the one of the plurality of semiconductor chips and the side surface of the metal contact, the underfill layer having a top surface substantially parallel to the major surface, wherein the top surface of the underfill layer defines a thickness of the underfill layer relative to the major surface, the thickness of the underfill layer being not greater than the thickness of the metal contact, and a solder bump formed in electrical contact with the contact surface of the metal contact.
摘要:
Methods for the addition polymerization of cycloolefins using a cationic Group 10 metal complex and a weakly coordinating anion of the formula: [(R′)zM(L′)x(L″)y]b[WCA]d wherein [(R′)zM(L′)x(L″)y] is a cation complex where M represents a Group 10 transition metal; R′ represents an anionic hydrocarbyl containing ligand; L′ represents a Group 15 neutral electron donor ligand; L″ represents a labile neutral electron donor ligand; x is 1 or 2; and y is 0, 1, 2, or 3; and z is 0 or 1, wherein the sum of x, y, and z is 4; and [WCA] represents a weakly coordinating counteranion complex; and b and d are numbers representing the number of times the cation complex and weakly coordinating counteranion complex are taken to balance the electronic charge on the overall catalyst complex.
摘要:
A method for low temperature bumping is disclosed. A resin capable of being cross-linked by free-radical or cationic polymerization at low temperature is provided. Electrically conductive particles are then added to the resin to form a mixture. The mixture is then activated by heat or exposure to light to polymerize the mixture. In an alternative embodiment, a vinyl ether resin is used, to which electrically conductive particles are added. The mixture is polymerized by exposure to light.
摘要:
The present invention describes a method including: providing a material A, the material A including a siloxane backbone with a hydride functional group; reacting the material A with a material B in the presence of a catalyst to form a material C, the material B including an alkenyl functional group and an aromatic carbonate functional group; heating the material C to form a material D, the material D including a phenol functional group; and reacting the material D with a material E and a material F to form a material G, the material E including a cyanogen halide, the material F including an acid acceptor, the material G including an aromatic cyanate ester functional group. The present invention further describes a die attach adhesive including a three-dimensional network of substituted triazine rings.
摘要:
A chip package includes a thermal interface material disposed between a die backside and a heat sink. The thermal interface material includes a first metal particle that is covered by a dielectric film. The dielectric film is selected from an inorganic compound of the first metal or an inorganic compound coating of a second metal. The dielectric film diminishes overall heat transfer from the first metal particle in the thermal interface material by a small fraction of total possible heat transfer without the dielectric film. A method of operating the chip includes biasing the chip with the dielectric film in place.