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(11)

EP 4 256 612 A1

(12)

(43) Date of publication: 11.10.2023 Bulletin 2023/41 (21) Application number: 21823699.0 (22) Date of filing: 10.11.2021

(51) International Patent Classification (IPC):  H01L 27/12(2006.01) H01L 29/786(2006.01) (52) Cooperative Patent Classification (CPC): H01L 27/1225; H01L 27/1237; H01L 29/78696; H01L 29/7869; H01L 27/1255 (86) International application number: PCT/US2021/058808 (87) International publication number: WO 2022/125249 (16.06.2022 Gazette 2022/24)

(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: 07.12.2020 US 202063122319 P 18.10.2021 US 202117504230 (71) Applicant: Apple Inc. Cupertino, CA 95014 (US)

(72) Inventors: HUANG, Jung, Yen Cupertino, CA 95014 (US) ONO, Shinya Cupertino, CA 95014 (US) LIN, Chin-Wei Cupertino, CA 95014 (US) MATSUDAIRA, Akira Cupertino, CA 95014 (US) HU, Cheng, Min Cupertino, CA 95014 (US) CHANG, Chih, Pang Cupertino, CA 95014 (US) CHUANG, Ching-Sang Cupertino, CA 95014 (US) CHOO, Gihoon Cupertino, CA 95014 (US) CHANG, Jiun-Jye Cupertino, CA 95014 (US) YEH, Po-Chun Cupertino, CA 95014 (US) CHANG, Shih, Chang Cupertino, CA 95014 (US) LIU, Yu-Wen Cupertino, CA 95014 (US) LEE, Zino Cupertino, CA 95014 (US) (74) Representative: Zacco Denmark A/S  Arne Jacobsens Allé 15 2300 Copenhagen S 2300 Copenhagen S (DK)