(19)

(11)

EP 1 665 378 A1

(12)

(43) Date of publication: 07.06.2006 Bulletin 2006/23 (21) Application number: 04757416.5 (22) Date of filing: 03.08.2004

(51) International Patent Classification (IPC):  H01L 23/498(1990.01) H01L 23/495(1990.01) H01L 21/60(1974.07) H05K 1/02(1968.09) (86) International application number: PCT/US2004/024986 (87) International publication number: WO 2005/027221 (24.03.2005 Gazette 2005/12)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 10.09.2003 JP 2003318639 (71) Applicant: 3M Innovative Properties Company Saint Paul, Minnesota 55133-3427 (US)	(72) Inventor: YAMAZAKI, Hideo 158-8583 Tokyo (JP) (74) Representative: von Kreisler, Alek  Patentanwälte von Kreisler-Selting-Werner Postfach 10 22 41 D-50462 Köln D-50462 Köln (DE)