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(11)

EP 3 317 451 A1

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(43) Date of publication: 09.05.2018 Bulletin 2018/19 (21) Application number: 16818203.8 (22) Date of filing: 29.06.2016

(51) International Patent Classification (IPC):  D06F 31/00(2006.01) D06F 39/12(2006.01) D06F 25/00(2006.01) D06F 37/42(2006.01) (86) International application number: PCT/KR2016/006943 (87) International publication number: WO 2017/003170 (05.01.2017 Gazette 2017/01)

(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: MA MD (30) Priority: 30.06.2015 KR 20150092782 (71) Applicant: LG Electronics Inc. Yeongdeungpo-gu Seoul 07336 (KR)	(72) Inventors: CHOI, Heechul Seoul 08592 (KR) PARK, Dongwoo Seoul 08592 (KR) YOON, Juhan Seoul 08592 (KR) (74) Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB  Siebertstrasse 3 81675 München 81675 München (DE)