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(11)

EP 2 554 016 A1

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(43) Date of publication: 06.02.2013 Bulletin 2013/06 (21) Application number: 11711592.3 (22) Date of filing: 01.04.2011

(51) International Patent Classification (IPC):  H05B 33/08(2006.01) (86) International application number: PCT/EP2011/055108 (87) International publication number: WO 2011/121113 (06.10.2011 Gazette 2011/40)

(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 (30) Priority: 01.04.2010 EP 10158998 (71) Applicant: Rohm Co., Ltd. Kyoto-shi, Kyoto 615-8585 (JP)	(72) Inventor: FRONEN, Robert Jan NL-5391 AL Nuland (NL) (74) Representative: Barth, Stephan Manuel  Isarpatent Friedrichstraße 31 80801 München 80801 München (DE)