(19)

(11)

EP 3 769 152 A1

(12)

(43) Date of publication: 27.01.2021 Bulletin 2021/04 (21) Application number: 19710711.3 (22) Date of filing: 20.03.2019

(51) International Patent Classification (IPC):  G02F 1/139(2006.01) C09K 19/58(2006.01) C09K 19/30(2006.01) C09K 19/04(2006.01) C09K 19/02(2006.01) G02F 1/137(2006.01) C09K 19/12(2006.01) (86) International application number: PCT/EP2019/056913 (87) International publication number: WO 2019/180060 (26.09.2019 Gazette 2019/39)

(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: 23.03.2018 EP 18163568 (71) Applicant: Merck Patent GmbH 64293 Darmstadt (DE)	(72) Inventors: CHEN, Fisher TAOYUAN 337 (TW) LEE, Sang-Kyu SHANGHAI 201103 (CN) HUNG, Gavin (Chuan) TAOYUAN 320 (TW) WU, Ming Chou TAOYUAN 337 (TW) CHANG, Arnold (Jer-Wei) TAOYUAN 32059 (TW)