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(11)

EP 3 568 897 A1

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(43) Date of publication: 20.11.2019 Bulletin 2019/47 (21) Application number: 18783655.6 (22) Date of filing: 06.04.2018

(51) International Patent Classification (IPC):  H02J 50/40(2016.01) H02J 50/80(2016.01) H01F 38/14(2006.01) H02J 50/90(2016.01) (86) International application number: PCT/KR2018/004093 (87) International publication number: WO 2018/190581 (18.10.2018 Gazette 2018/42)

(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 Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 12.04.2017 US 201762484473 P 27.06.2017 KR 20170081380 (71) Applicant: Samsung Electronics Co., Ltd. Suwon-si, Gyeonggi-do 16677 (KR)

(72) Inventors: YEO, Sung-Ku Suwon-si, Gyeonggi-do 16677 (KR) KIM, Dae-Hyun Suwon-si, Gyeonggi-do 16677 (KR) KIM, Young-Joon Suwon-si, Gyeonggi-do 16677 (KR) BYUN, Kang-Ho Suwon-si, Gyeonggi-do 16677 (KR) HAN, Hyo-Seok Suwon-si, Gyeonggi-do 16677 (KR) KIM, Ki-Young Suwon-si, Gyeonggi-do 16677 (KR) JUNG, Ji-Hoon Suwon-si, Gyeonggi-do 16677 (KR) PARK, Jae-Hyun Suwon-si, Gyeonggi-do 16677 (KR) UM, Eun-Song Suwon-si, Gyeonggi-do 16677 (KR) (74) Representative: Appleyard Lees IP LLP  15 Clare Road Halifax HX1 2HY Halifax HX1 2HY (GB)