Active solid-state devices (e.g. – transistors – solid-state diode – Encapsulated
Patent
1997-12-30
2000-08-29
Potter, Roy
Active solid-state devices (e.g., transistors, solid-state diode
Encapsulated
257788, 257792, 257778, H01L 2328
Patent
active
061113239
ABSTRACT:
The invention is an encapsulated circuit assembly including a chip; a substrate; at least one solder joint which 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 thermoplastic polymer formed by ring opening polymerization of a cyclic oligomer.
REFERENCES:
patent: 3801880 (1974-04-01), Harada et al.
patent: 3864426 (1975-02-01), Salensky
patent: 4012832 (1977-03-01), Crane
patent: 4370292 (1983-01-01), Yanase et al.
patent: 4529755 (1985-07-01), Nishikawa et al.
patent: 4604444 (1986-08-01), Donnadieu et al.
patent: 4626556 (1986-12-01), Nozue et al.
patent: 4632798 (1986-12-01), Eickman et al.
patent: 4663190 (1987-05-01), Fujita et al.
patent: 4729062 (1988-03-01), Anderson et al.
patent: 4738892 (1988-04-01), Canova
patent: 4983683 (1991-01-01), Shimp
patent: 4985751 (1991-01-01), Shiobara et al.
patent: 5037779 (1991-08-01), Whalley et al.
patent: 5043211 (1991-08-01), Yoshizumi et al.
patent: 5061657 (1991-10-01), Queen et al.
patent: 5064895 (1991-11-01), Kohler et al.
patent: 5072874 (1991-12-01), Bertram et al.
patent: 5120678 (1992-06-01), Moore et al.
patent: 5128204 (1992-07-01), Charmot
patent: 5140068 (1992-08-01), Siebert et al.
patent: 5160786 (1992-11-01), Nakai
patent: 5199163 (1993-04-01), Ehrenberg et al.
patent: 5250848 (1993-10-01), Christie et al.
patent: 5264520 (1993-11-01), Mullins et al.
patent: 5274913 (1994-01-01), Grebe et al.
patent: 5286572 (1994-02-01), Clodgo et al.
patent: 5298548 (1994-03-01), Shiobara et al.
patent: 5300625 (1994-04-01), Helmreich et al.
patent: 5313365 (1994-05-01), Pennisi et al.
patent: 5326413 (1994-07-01), Esemplare et al.
patent: 5371328 (1994-12-01), Gutierrez et al.
patent: 5381304 (1995-01-01), Theroux et al.
patent: 5434751 (1995-07-01), Cole, Jr. et al.
patent: 5457149 (1995-10-01), Hall et al.
patent: 5460767 (1995-10-01), Sanftleben et al.
patent: 5471096 (1995-11-01), Papathomas et al.
patent: 5474620 (1995-12-01), Nath et al.
patent: 5498689 (1996-03-01), Furuta et al.
patent: 5821456 (1998-10-01), Wille et al.
patent: 5863664 (1999-01-01), McCormick et al.
Chan, K. P., "Cyclic Aryl Ethers: New Intermediates for High Performance Polymers", Department of Chemistry, McGill University, (Apr. 1995).
Frechet, J. M. J. et al., "Synthesis and Properties of Dendrimers and Hyperbranched Polymers", Cornell University and IBM Almaden Research Center, pp. 71-132.
Srinivasan, S. et al., "Heterocycle-Activated Aromatic Nucleophilic Substitution of AB.sub.2 Poly(aryl ether phenylquinoxaline) Monomers. 3", Macromolecules, 29(26): 8543-8545 (1996).
Srinivasan, S. et al., "Poly(Aryl Ether Phenylquinoxalines) via Anionic Ring Opening Polymerization of Macrocycles", Macromol. Symp., 122, 101-109 (1997).
Tummala, R. et al., "Chip-To-Package Interconnections", Microelectronics Packaging Handbook Part II, Second Edition, pp. 132-184 (1997).
Buchwalter Stephen Leslie
Carter Kenneth Raymond
Gaynes Michael Anthony
Hawker Craig Jon
Hedrick James Lupton
International Business Machines - Corporation
Morris Daniel P.
Potter Roy
LandOfFree
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