摘要:
A resist medium in which features are lithographically produced by scanning a surface of the medium with an AFM probe positioned in contact therewith. The resist medium comprises a substrate; and a polymer resist layer within which features are produced by mechanical action of the probe. The polymer contains thermally reversible crosslinkages. Also disclosed are methods that generally includes scanning a surface of the polymer resist layer with an AFM probe positioned in contact with the resist layer, wherein heating the probe and a squashing-type mechanical action of the probe produces features in the layer by thermally reversing the crosslinkages.
摘要:
Precursors are provided for dielectric compositions that are useful in the manufacture of electronic devices such as integrated circuit devices and integrated circuit packaging devices. The dielectric compositions are prepared by crosslinking a thermally decomposable porogen to a host polymer via a coupling agent, followed by heating to a temperature suitable to decompose the porogen. The porous materials that result have dielectric constants of less than 2.4.
摘要:
A method is disclosed for providing a patterned surface wherein predetermined regions of the surface are masked with a self-assembled monolayer (“SAM”) covalently bound to a brush polymer overlayer. The remainder of the substrate surface will generally be functionalized with a second self-assembled monolayer. Preferably, the method involves a microcontact printing technique, wherein a molecular moiety capable of spontaneously forming an SAM upon transfer to a surface is “stamped” onto a substrate surface, followed by growth (or covalent attachment) of a polymer on exposed functional groups within the SAM molecules. Coverage of surface regions with both an SAM and a polymer overlayer provides a number of advantages, particularly with regard to surface masking during etching and the like. The method is useful in the manufacture of microelectronic circuitry, biosensors, high-density assay plates, and the like.
摘要:
Dielectric compositions comprised of porous polymeric matrices are prepared using nitrogen-containing polymers as pore-generating agents. The compositions are useful in the manufacture of electronic devices such as integrated circuit devices and integrated circuit packaging devices. The dielectric compositions are prepared by admixing a polymeric nitrogenous porogen with a high temperature, thermosetting host polymer in a suitable solvent, heating the admixture to cure the polymer and provide a vitrified matrix, and then decomposing the porogen using heat, radiation, or a chemical reagent effective to degrade the porogen. The highly porous dielectric materials so prepared have an exceptionally low dielectric constant on the order of 2.5 or less, preferably less than about 2.0. Integrated circuit devices and integrated circuit packaging devices manufactured so as to contain the dielectric material of the invention are provided as well.
摘要:
A novel dielectric composition is provided that is useful in the manufacture of electronic devices such as integrated circuit devices and integrated circuit packaging devices. The dielectric composition is prepared by crosslinking a thermally decomposable porogen to a host polymer via a coupling agent, followed by heating to a temperature suitable to decompose the porogen. The porous materials that result have dielectric constants less than about 3.0, with some materials having dielectric constants less than about 2.5. Integrated circuit devices, integrated circuit packaging devices, and methods of manufacture are provided as well.
摘要:
The invention is an encapsulated circuit assembly including a chip; a substrate; at least one solder joint, wherein the solder joint spans between the chip and the substrate forming an electrically conductive connection between the chip and the substrate; and an encapsulant formed adjacent the solder joint, wherein the encapsulant comprises a hyperbranched polymer formed by the reaction of a monomer of the formula: (A)nRB, wherein A is a coupling group reactive with B, B is a coupling group reactive with A, n is greater than 1, and R is a group selected from the group consisting of an aromatic group, an aliphatic group, and mixtures thereof Also disclosed is a method of encapsulating a circuit assembly using the encapsulant of the invention.
摘要:
A branched radial block copolymer including the reaction product of a dendritic macromolecular initiator, and one or more chain extending monomers.
摘要:
A resist medium in which features are lithographically produced by scanning a surface of the medium with an AFM probe positioned in contact therewith. The resist medium comprises a substrate; and a polymer resist layer within which features are produced by mechanical action of the probe. The polymer contains thermally reversible crosslinkages. Also disclosed are methods that generally includes scanning a surface of the polymer resist layer with an AFM probe positioned in contact with the resist layer, wherein heating the probe and a squashing-type mechanical action of the probe produces features in the layer by thermally reversing the crosslinkages.
摘要:
Defect-free dielectric coatings comprised of porous polymeric matrices are prepared using nitrogen-containing polymers as pore-generating agents. The dielectric coatings are useful in a number of contexts, including the manufacture of electronic devices such as integrated circuit devices and integrated circuit packaging devices. The dielectric coatings are prepared by admixing, in a solvent, a polymeric nitrogenous porogen with a high temperature, thermosetting host polymer miscible therewith, coating a substrate surface with the admixture, heating the uncured coating to cure the host polymer and provide a vitrified, two-phase matrix, and then decomposing the porogen. The dielectric coatings so prepared have few if any defects, and depending on the amount and molecular weight of porogen used, can be prepared so as to have an exceptionally low dielectric constant on the order of 2.5 or less, preferably less than about 2.0. Integrated circuit devices and integrated circuit packaging devices manufactured so as to contain the dielectric material of the invention are provided as well.
摘要:
A novel dielectric composition is provided that is useful in the manufacture of electronic devices such as integrated circuit devices and integrated circuit packaging devices. The dielectric composition is prepared by crosslinking a thermally decomposable porogen to a host polymer via a coupling agent, followed by heating to a temperature suitable to decompose the porogen. The porous materials that result have dielectric constants less than about 3.0, with some materials having dielectric constants less than about 2.5. Integrated circuit devices, integrated circuit packaging devices, and methods of manufacture are provided as well.