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EP 3 725 063 A1

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(43) Date of publication: 21.10.2020 Bulletin 2020/43 (21) Application number: 18887628.8 (22) Date of filing: 11.10.2018

(51) International Patent Classification (IPC):  H04M 1/02(2006.01) C08L 57/02(2006.01) C09K 3/10(2006.01) C08L 25/08(2006.01) C08L 91/00(2006.01) C09D 5/34(2006.01) (86) International application number: PCT/KR2018/011942 (87) International publication number: WO 2019/117442 (20.06.2019 Gazette 2019/25)

(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: 12.12.2017 US 201762597417 P 09.02.2018 KR 20180016324 (71) Applicant: LG Electronics Inc. Yeongdeungpo-gu Seoul 07336 (KR)	(72) Inventors: CHA, Youngdo Seoul 06772 (KR) HAN, Dongwon Seoul 06772 (KR) JUNG, Chalkee Seoul 06772 (KR) CHUNG, Hoseok Seoul 06772 (KR) (74) Representative: Vossius & Partner Patentanwälte Rechtsanwälte mbB  Siebertstrasse 3 81675 München 81675 München (DE)