Mask ROM device
US5600171A · kind A · utility
40Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1994 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Jul 13, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10B20/00
Abstract
A mask ROM device includes a plurality of memory cells each having an enhancement type FET having a gate electrode and first and second source/drain regions, a plurality of word lines connected to the gate electrodes, a plurality of bit lines connected to the first source/drain regions, a connection line formed above the gate electrode so as to electrically connect the first and second source/drain regions through contact holes in each of memory cells selected according to information to be stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.