Underfill composition and an optical semiconductor device
US8519063B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2010 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Oct 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/854
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A purpose of the present invention is to provide an underfill composition for optical semiconductor devices which can provide a cured product whose moldability, adhesiveness to a gold bump, heat-resistance, and light resistance are better. The present invention is an underfill composition, comprising (A) 60 to 99 parts by weight of a branched organopolysiloxane having a weight average molecular weight of from 500 to 20000, reduced to polystyrene, and represented by the average compositional formula (1); (B) 250 to 1000 parts by weight of an inorganic filler; (C) 0.01 to 10 parts by weight of a condensation catalyst; (D) 1 to 40 parts by weight of an organopolysiloxane having a linear diorganopolysiloxane moiety, represented by the formula (2), provided that a total amount of component (A) and component (D) is 100 parts by weight; and (E) 0.2 to 2.0 parts by weight of silane coupling agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.