Abstract:
An assembly of a semiconductor die attached to a substrate is made with a composition comprising compounds that contain an oxazoline functionality and an electron acceptor or an electron donor functionality. Electron donor functionalities include styrenic, cinnamyl, and vinyl ether groups. Electron acceptor functionalities include maleimide, acrylate, fumarate, and maleate groups. An exemplary compound has the structure: formula (I).
Abstract:
Die attach adhesive compositions exhibit improved adhesion and conductivity by the addition of a metal salt of 8-quinolinol or of an 8-quinolinol derivative as an adhesion and/or conductivity promoter. The metal salt of 8-quinolinol or of an 8-quinolinol derivative is formed by coordination with a metal selected from the group consisting of Cu, Be, Mg, Ca, Sr, Ba, Zn, Cd, Al, Ga, In, Tl, Yt, La, Pb, Sb, Bi, Cr, Mo, Mn, Fe, Co, Ni, Pd, Ce, and Pr. Examples of quinolinol derivative salts have the structures:
Abstract:
Benzoxazine compounds can be cured with epoxies and fluxing agents to afford thermoset materials with particular utility as no-flow underfilling encapsulants within the semiconductor packaging industry.
Abstract:
A method of fluxing a solder or a metal substrate uses a fluxing composition that comprises a fluxing agent, in which the fluxing agent is a benzotriazole or a benzotriazole adduct. The adduct contains a benzotriazole segment and a segment with a curable and polymerizable functionality.
Abstract:
A fluxing composition comprises a fluxing agent, in which the fluxing agent is a benzotriazole or a benzotriazole adduct. The adduct contains a benzotriazole segment and a segment with a curable and polymerizable functionality.
Abstract:
A fluxing composition comprises a fluxing agent in which the fluxing agent is a compound having (i) an aromatic ring, (ii) at least one —OH, —NHR (where R is hydrogen or lower alkyl), or —SH group (iii) an electron-withdrawing or electron-donating substituent on the aromatic ring, and (iv) no imino group.
Abstract:
This invention is a film adhesive prepared from an adhesive composition comprising a polymer system, a film forming rubber compound, and curing agents for the polymeric system. The polymer system comprises a base polymer and electron donor and electron acceptor functionality.
Abstract:
This invention is a film adhesive prepared from an adhesive composition comprising a polymer system, a film forming rubber compound, and curing agents for the polymeric system. The polymer system comprises a base polymer and electron donor and electron acceptor functionality.
Abstract:
Die attach adhesive compositions comprise a quinolinol or a quinolinol derivative as an adhesion promoter. An exemplary quinolinol derivative has the structure:
Abstract:
A linear or cyclic siloxane compound contains pendant carbon to carbon double bonds, Si—H bonds, and pendant oxetane functionality. These compounds have two curing temperatures, one associated with a hydrosilation reaction between the carbon to carbon double bond and the Si—H entity, and the other associated with the ring opening of the oxetane.