Semiconductor memory device
US11967371B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2022 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Nov 3, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/5648
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor memory device includes i first word lines connected to the i first memory cells, i second word lines connected to the i second memory cells, a driver capable of supplying voltage to each of the i first word lines and each of the i second word lines, and a logic control circuit controlling both a write operation including a verify operation and a read operation including a verify operation. In the semiconductor memory device, when an order of performing a sense operation for determining whether or not a threshold voltage of the k-th first memory cell has reached a j-th threshold voltage in the verify operation is different from that of in the read operation, a voltage applied to the k-th first word line in the verify operation is different from a voltage applied to the k-th first word line in the read operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.