(19)
(11) EP 4 055 630 A1

(12)

(43) Date of publication:
14.09.2022 Bulletin 2022/37

(21) Application number: 21889770.0

(22) Date of filing: 09.06.2021
(51) International Patent Classification (IPC): 
H01L 27/11573(2017.01)
H01L 27/11575(2017.01)
H01L 25/065(2006.01)
 H01L 27/11578(2017.01)
H01L 27/11568(2017.01)
(52) Cooperative Patent Classification (CPC):
H01L 25/065; H01L 27/11568; H01L 27/11573; H01L 27/11578; H01L 27/11575
(86) International application number:
PCT/US2021/036631
(87) International publication number:
WO 2022/098395 (12.05.2022 Gazette 2022/19)
(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: 05.11.2020 US 202017090045
05.11.2020 US 202017090080

(71) Applicant: SanDisk Technologies LLC
Addison, Texas 75001 (US)

(72) Inventors:
  • OGAWA, Hiroyuki
    Addison, Texas 75001 (US)
  • OOWADA, Ken
    Addison, Texas 75001 (US)
  • MUSHIGA, Mitsuteru
    Addison, Texas 75001 (US)

(74) Representative: Dehns 
St. Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) THREE-DIMENSIONAL MEMORY DEVICE CONTAINING A SHARED WORD LINE DRIVER ACROSS DIFFERENT TIERS AND METHODS FOR MAKING THE SAME