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(11)

EP 2 171 760 A1

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(43) Date of publication: 07.04.2010 Bulletin 2010/14 (21) Application number: 07805681.9 (22) Date of filing: 28.06.2007

(51) International Patent Classification (IPC):  H01L 31/0224(2006.01) H01L 31/0296(2006.01) (86) International application number: PCT/IT2007/000469 (87) International publication number: WO 2009/001389 (31.12.2008 Gazette 2009/01)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (71) Applicant: Solar Systems & Equipments S.R.L. Via S. Antonio M.Pucci, 84 55049 Viareggio (IT)	(72) Inventors: ROMEO, Nicola I-43100 Parma (IT) BOSIO, Alessio I-43100 Parma (IT) ROMEO, Alessandro I-43100 Parma (IT) (74) Representative: Bardini, Marco Luigi et al Società Italiana Brevetti S.p.A. 25 Corso dei Tintori 50122 Firenze FI 50122 Firenze FI (IT)