(19)

(11)

EP 0 820 643 A1

(12)

(43) Date of publication: 28.01.1998 Bulletin 1998/05 (21) Application number: 96909280.0 (22) Date of filing: 09.04.1996

(51) International Patent Classification (IPC):  H01L 25/ 10( . ) H01L 25/ 16( . ) H05K 1/ 14( . ) H01L 25/ 11( . ) H01L 25/ 18( . ) (86) International application number: PCT/GB1996/000873 (87) International publication number: WO 1996/032746 (17.10.1996 Gazette 1996/46)

(84) Designated Contracting States: DE FR IT SE (30) Priority: 08.04.1995 GB 19950007360 24.04.1995 GB 19950008238 (71) Applicant: Hybrid Memory Products Limited North Shields Tyne & Wear NE29 8SE (GB)	(72) Inventor: ARMSTRONG, David, Yorke Cramlington Tyne & Wear NE23 9QW (GB) (74) Representative: Evans, Huw David Duncan  Urquhart-Dykes & Lord, Three Trinity Court, 21-27 Newport Road Cardiff CF2 1AA Cardiff CF2 1AA (GB)