(19)

(11)

EP 1 808 060 A1

(12)

(43) Date of publication: 18.07.2007 Bulletin 2007/29 (21) Application number: 05802148.6 (22) Date of filing: 29.09.2005

(51) International Patent Classification (IPC):  H05K 7/20(2006.01) H01L 23/44(2006.01) H01L 23/427(2006.01) (86) International application number: PCT/US2005/035129 (87) International publication number: WO 2006/049768 (11.05.2006 Gazette 2006/19)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 29.10.2004 US 977454 (71) Applicant: 3M Innovative Properties Company Saint Paul, MN 55133-3427 (US)	(72) Inventor: TUMA, Phillip E. Saint Paul, Minnesota 55133-3427 (US) (74) Representative: Bergen, Katja  3M Deutschland GmbH Carl-Schurz-Strasse 1 41453 Neuss 41453 Neuss (DE)