(19)

(11)

EP 2 534 704 A1

(12)

(43) Date of publication: 19.12.2012 Bulletin 2012/51 (21) Application number: 11856637.1 (22) Date of filing: 06.10.2011

(51) International Patent Classification (IPC):  H01L 31/052(2006.01) H01L 31/18(2006.01) (86) International application number: PCT/KR2011/007404 (87) International publication number: WO 2012/102454 (02.08.2012 Gazette 2012/31)

(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: 25.01.2011 KR 20110007514 (71) Applicant: LG Innotek Co., Ltd. Seoul 100-714 (KR)	(72) Inventor: BAE, Do Won Seoul 100-714 (KR) (74) Representative: Novagraaf Technologies  122 rue Edouard Vaillant 92593 Levallois-Perret Cedex 92593 Levallois-Perret Cedex (FR)