摘要:
A polymer comprising polycyclic repeating units having recurring ion conducting groups and optional crosslinkable groups is disclosed. The present invention provides the capability of tailoring polymers to impart unique properties to membranes fabricated from the polymers. Membranes comprising the polymers and methods for preparing the membranes and their use in ion conducting membranes, particularly in fuel cells, are also provided.
摘要:
Polymers comprising polycyclic repeating units containing pendant anhydride moieties are disclosed. The polymer can be polymerized from polycycloolefins containing pendant anhydride moieties in the presence of a nickel containing single component catalyst. In optional embodiments the polycycloolefin monomer containing the pendant anhydride functionality can be copolymerized with other polycycloolefin monomers that contain pendant functional groups to yield random copolymer products.
摘要:
Polycyclic polymers containing pendant aromatic moieties are disclosed. The polymers exhibit light transparency properties to deep UV wave lengths making them useful for high resolution photolithographic applications. These polymers are particularly useful in chemically amplified positive and negative tone resists.
摘要:
The invention is directed to polymers containing a repeating unit derived from a norbornene sulfonamide. These may be addition polymers which include copolymers with one or more comonomers such as norbornene, ethylene, an acrylate or sulfur dioxide or carbon monoxide. Said monomers may be polymerized using single or multicomponent Group VIII catalysts. The norbornene sulfonamides can also form ROMP polymers using known metathesis catalysts. Preferably the ROMP polymers may be hydrogenated to give more stable polymers.
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:
Techniques are disclosed for protecting a surface using a dry-removable protective coating that does not require chemical solutions to be removed. In an embodiment, a protective layer is disposed on a surface. The protective layer is composed of one layer that adheres to the surface. The surface is then processed while the protective coating is on the surface. Thereafter, the protective layer is removed from the surface by separating the protective layer away from the surface without the use of chemical solutions.
摘要:
This disclosure relates generally to generating a solder-on-die using a water-soluble resist, system, and method. Heat may be applied to solder as applied to a hole formed in a water-soluble resist coating, the water-soluble resist coating being on a surface of an initial assembly. The initial assembly may include an electronic component. The surface may be formed, at least in part, by an electrical terminal of the electronic component, the hole being aligned, at least in part, with the electrical terminal. The solder may be reflowed, wherein the solder couples, at least in part, with the electrical terminal.
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:
An underfill composition is formulated to increase the surface tension thereof for use in capillary underfilling of an integrated circuit die that is coupled to a mounting substrate. A method includes mixing a surface tension-increasing additive with a bulk polymer and a hardener and allowing the underfill composition to flow between the integrated circuit die and the mounting substrate. An article is achieved by the method. The article can be assembled into a computing system.
摘要:
Embodiments of the present invention provide various polymeric matrices that may be used as a binder matrix for polymer solder hybrid thermal interface materials. In alternative embodiments the binder matrix material may be phophozene, perfluoro ether, polyether, or urethane. For one embodiment, the binder matrix is selected to provide improved adhesion to a variety of interfaces. For an alternative embodiment the binder matrix is selected to provide low contact resistance. In alternative embodiments, polymeric materials containing fusible and non-fusible particles may be used in application where heat removal is desired and is not restricted to thermal interface materials for microelectronic devices.