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(11)

EP 4 193 213 A1

(12)

(43) Date of publication: 14.06.2023 Bulletin 2023/24 (21) Application number: 21852898.2 (22) Date of filing: 03.08.2021

(51) International Patent Classification (IPC):  G02B 26/10(2006.01) H01L 27/32(2006.01) (52) Cooperative Patent Classification (CPC): G02B 26/10; G09G 3/005; G09G 3/2003; G09G 3/32; G09G 2300/0452 (86) International application number: PCT/IB2021/057112 (87) International publication number: WO 2022/029630 (10.02.2022 Gazette 2022/06)

(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: 05.08.2020 US 202016985341 05.08.2020 US 202016985343 05.08.2020 US 202016985354 05.08.2020 US 202016985368 05.08.2020 US 202016985372 05.08.2020 US 202016985382 (71) Applicant: Jade Bird Display (Shanghai) Limited Shanghai (CN)

(72) Inventors: XU, Qunchao Shanghai 201306 (CN) LI, Qiming Albuquerque, New Mexico 87123 (US) (74) Representative: Finnegan Europe LLP  1 London Bridge London SE1 9BG London SE1 9BG (GB)