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(11)

EP 2 973 699 A1

(12)

(43) Date of publication: 20.01.2016 Bulletin 2016/03 (21) Application number: 14721609.7 (22) Date of filing: 13.03.2014

(51) International Patent Classification (IPC):  H01L 25/075(2006.01) H01L 33/50(2010.01) H01L 33/64(2010.01) (86) International application number: PCT/US2014/025418 (87) International publication number: WO 2014/159894 (02.10.2014 Gazette 2014/40)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 14.03.2013 US 201313828297 (71) Applicant: Corning Incorporated Corning, New York 14831 (US)

(72) Inventors: BORRELLI, Nicholas Francis Elmira, New York 14905 (US) LAMBERSON, Lisa Ann Painted Post, New York 14870 (US) MORENA, Robert Michael Lindley, New York 14858 (US) ORSLEY, Timothy James San Jose, California 95118 (US) TRUNTA, William Richard Atherton, California 94027 (US) (74) Representative: Greene, Simon Kenneth  Elkington and Fife LLP Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)