(19)

(11)

EP 3 335 242 A1

(12)

(43) Date of publication: 20.06.2018 Bulletin 2018/25 (21) Application number: 16835909.9 (22) Date of filing: 11.08.2016

(51) International Patent Classification (IPC):  H01L 29/66(2006.01) H01L 29/15(2006.01) H01L 27/14(2006.01) (86) International application number: PCT/US2016/046546 (87) International publication number: WO 2017/027704 (16.02.2017 Gazette 2017/07)

(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 Designated Validation States: MA MD (30) Priority: 11.08.2015 US 201562203438 P 08.04.2016 US 201615094985 (71) Applicant: Cambridge Electronics, Inc. Cambridge, MA 02142 (US)	(72) Inventors: AZIZE, Mohamed Medford, MA 02155 (US) LU, Bin Watertown, MA 02472 (US) XIA, Ling Belmont, MA 02478 (US) (74) Representative: FRKelly  27 Clyde Road Dublin D04 F838 Dublin D04 F838 (IE)