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(11)

EP 2 759 001 A1

(12)

(43) Date of publication: 30.07.2014 Bulletin 2014/31 (21) Application number: 12833315.0 (22) Date of filing: 22.08.2012

(51) International Patent Classification (IPC):  H01L 33/52(2010.01) (86) International application number: PCT/CN2012/080472 (87) International publication number: WO 2013/040974 (28.03.2013 Gazette 2013/13)

(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: 22.09.2011 CN 201110282701 (71) Applicants: Shenzhen BYD Auto R&D Company Limited Shenzhen, Guangdong 518118 (CN) BYD Company Limited Shenzhen, Guangdong 518118 (CN)	(72) Inventor: ZHANG, Ge Shenzhen Guangdong 518118 (CN) (74) Representative: Gulde & Partner  Patent- und Rechtsanwaltskanzlei mbB Wallstraße 58/59 10179 Berlin 10179 Berlin (DE)