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(11)

EP 2 606 509 A1

(12)

(43) Date of publication: 26.06.2013 Bulletin 2013/26 (21) Application number: 11819399.4 (22) Date of filing: 16.08.2011

(51) International Patent Classification (IPC):  H01L 21/58(2006.01) H01L 33/48(2010.01) (86) International application number: PCT/CN2011/078491 (87) International publication number: WO 2012/025024 (01.03.2012 Gazette 2012/09)

(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: 21.08.2010 CN 201010261581 (71) Applicants: BYD Company Limited Shenzhen 518118 (CN) Shenzhen BYD Auto R&D Company Limited Shenzhen, Guangdong 518118 (CN)	(72) Inventors: LIU, Yingce Guangdong 518118 (CN) HUO, Dongming Guangdong 518118 (CN) SUN, Tianbao Guangdong 518118 (CN) (74) Representative: Steinbauer, Florian et al Kudlek & Grunert Patentanwälte P.O. Box 33 04 29 80064 München 80064 München (DE)