Patent ID: 11881465
Assignee: KIOXIA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A semiconductor storage device, comprising:
a first chip; and
a second chip,
wherein the first chip includes
a first semiconductor substrate,
a plurality of first conductive layers arranged in a first direction intersecting a surface of the first semiconductor substrate, and extending in a second direction intersecting the first direction,
a first semiconductor column extending in the first direction and facing the plurality of first conductive layers,
a first charge storage film provided between the plurality of first conductive layers and the first semiconductor column,
a plurality of first transistors provided on the first semiconductor substrate, each of the first transistors including a first gate insulating film provided on the first semiconductor substrate, and
a plurality of first bonding electrodes electrically connected to at least a portion of the plurality of first transistors,
wherein the second chip includes
a second semiconductor substrate,
a plurality of second transistors provided on the second semiconductor substrat, each of the second transistors including a second gate insulating film provided on the second semiconductor substrate, and
a plurality of second bonding electrodes electrically connected to at least a portion of the plurality of second transistors, and bonded to the plurality of first bonding electrodes,
wherein a thickness of the second semiconductor substrate in the first direction is smaller than a thickness of the first semiconductor substrate in the first direction, and
wherein a thickness of the second gate insulating film in the first direction is smaller than a thickness of the first gate insulating film in the first direction.