摘要:
A silicone adhesive sheet for bonding a semiconductor chip to a chip attachment component comprising a crosslinkable silicone composition containing a silatrane derivative, and a method for manufacturing a silicone adhesive sheet by subjecting a crosslinkable silicone composition containing a silatrane derivative to a crosslinking reaction between backing materials that do not stick to the crosslinked product of said composition, where at least one of the backing materials has a larger dielectric constant than that of the crosslinked product. The present silicone adhesive sheet allows a semiconductor chip and a chip attachment component to be bonded in a short time at a relatively low temperature.
摘要:
A method for forming thin films on substrates wherein the films are produced by applying a solution of an electrically insulating, heat-curing resin onto the substrate, evaporating the solvent and exposing the resin to high energy radiation to cure the resin. The resin solution contains a substance selected from solvents and gas generating additives that causes the dedensification of the film during the cure of the resin. This results in a film having a dielectric constant of below 2.7. A semiconductor device is also disclosed as having an interconnect structure including at least one electrically conductive layer with an interposed insulating layer having a dielectric constant of less than 2.7 wherein the insulating layer is produced by the method described above.
摘要:
A thermally conductive silicone rubber composition comprised of (A) 100 parts by weight of an organopolysiloxane that contains at least two silicon-bonded alkenyl groups per molecule, (B) 0.1 to 50 parts by weight of an organohydrogenpolysiloxane that contains at least two silicon-bonded hydrogen atoms molecule, (C) 0.1 to 10 parts by weight of organosiloxane that contains at least one silicon-bonded alkoxy group per silicon-bonded hydroxyl per molecule, (D) 300 to 1200 parts by weight of fine alumina powder comprised of (i) 5 to 95 wt % of spherical or nonspherical fine powder of an average particle diameter of up to 10 .mu.m and of (ii) 95 to 5 wt % of spherical or nonspherical fine alumina powder of an average particle diameter of 10 to 50 .mu.m, and (E) a catalytic quantity a hydrosilylation reaction catalyst.
摘要:
A curable epoxy resin composition comprising (A) a curable epoxy resin and (B) an organopolysiloxane prepared by equilibrium polymerization and having the average unit formula(R.sup.1 SiO.sub.3/2).sub.a (R.sup.2.sub.2 SiO.sub.2/2).sub.b (R.sup.2.sub.3 SiO.sub.1/2).sub.c (R.sup.3 O.sub.1/2).sub.din which R.sup.1 is an epoxy-functional monovalent organic group, R.sup.2 is a monovalent hydrocarbon group, R.sup.3 is a hydrogen atom or an alkyl group having no more than 4 carbon atoms, a>0, b>0, d>0 and c.gtoreq.0. Also, an electronic component coated with a product obtained by curing the aforesaid composition
摘要:
Method for curing UV-curable silicone compositions, characterized by the formation of cured silicone, having a low-tack surface that is harder than the interior, by exposing an ultraviolet-curable silicone composition to ultraviolet radiation at a ratio of the exposure dose for wavelengths of 200 to 280 nm (excluding 280 nm) to the exposure dose for wavelengths of 280 to 400 nm of 0.5 to 10.0.
摘要:
Disclosed is a method for the preparation of high molecular-weight silicone resins that have excellent storage stability in solution form. The method comprises the hydrolysis and condensation of a disiloxane and an alkyl silicate in an aqueous solution which contains at least 30 weight % alcohol and at least 5 weight % inorganic acid followed by isolation of the resin with an organic solvent which is poorly soluble in water and which has a dielectric constant of at least 4.
摘要:
Semiconductor devices which comprise a semiconductor chip, electrically conductive materials for connections to external leads, and encapsulated by a sealing resin has a surface and a portion of the electrically conductive material covered with a hardened silicone layer whose surface is exposed to ultraviolet radiation and the irradiation processed surface adheres to and is unified with the sealing resin. The sealing resin does not break easily when the device is exposed to heat cycles, thermal shock, repeated interruptions in current flow, and long periods of time at high temperature or low temperature. Such devices also exhibit excellent properties of moisture resistance, corrosion resistance and stress relaxation.
摘要:
Pattern-forming material useful in producing highly accurate submicron patterns having unusually high aspect ratios at superior resolutions are obtained by using a solvent-soluble polyorganosiloxane having SiO.sub.4/2 units and at least one other organosiloxane unit which contains a high energy radiation sensitive group. The polyorganosiloxane has a softening temperature greater than room temperature.
摘要:
There is disclosed heat curable organopolysiloxane compositions which contain adhesion additives which are organosilicon compounds which contain an epoxy functional group and at least one alkyl group or low molecular weight alkenyl group or hydrogen atom bound to silicon.
摘要:
To provide a pasty silver particle composition, which, upon heating, allows silver particles to be easily sintered to form solid silver possessing excellent strength, electric conductivity and thermal conductivity, and a production process of solid silver and the like. A pasty silver particle composition comprising nonspherical silver particles having an average particle diameter of 0.1 to 18 μm and a carbon content of not more than 1.0% by weight and a volatile dispersion medium, wherein, upon heating, the volatile dispersion medium is volatilized and the nonspherical silver particles are sintered to one another to form solid silver. There are also provided a process for producing solid silver comprising heating the pasty silver particle composition, solid silver having excellent strength, electric conductivity and thermal conductivity, a method for joining a metallic member using the pasty silver particle composition, and a production process of a printed wiring board comprising silver wiring.