(19)

(11)

EP 4 055 629 A1

(12)

(43) Date of publication: 14.09.2022 Bulletin 2022/37 (21) Application number: 20942180.9 (22) Date of filing: 30.12.2020

(51) International Patent Classification (IPC):  H01L 27/11507(2017.01) H01L 45/00(2006.01) H01L 27/12(2006.01) (52) Cooperative Patent Classification (CPC): H01L 27/11507; H01L 45/06; H01L 45/1233; H01L 45/1675; H01L 45/144; H01L 27/2427; H01L 27/2463; H01L 27/224 (86) International application number: PCT/US2020/067428 (87) International publication number: WO 2021/262239 (30.12.2021 Gazette 2021/52)

(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: 26.06.2020 US 202016913717 26.06.2020 US 202016913766 (71) Applicant: SanDisk Technologies LLC Addison, Texas 75001 (US)	(72) Inventors: MAKALA, Raghuveer S. San Jose, California 95119 (US) ALSMEIER, Johann San Jose, California 95119 (US) (74) Representative: Dehns  St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)