Static random access memory cell having a thin film transistor (TFT) pass gate connection to a bit line
US5949706A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1999 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jan 26, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S257/903
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A memory circuit and method of formation uses a transmission gate (24) as a select gate. The transmission gate (24) contains a transistor (30) which is an N-channel transistor and a transistor (28) which is a P-channel transistor. The transistors (28 and 30) are electrically connected in parallel. The use of the transmission gate (24) as a select gate allows reads and writes to occur to a memory cell storage device (i.e. a capacitor (32), a floating gate (22), etc.) without a significant voltage drop occurring across the transmission gate. In addition, EEPROM technology is more compatible with EPROM/flash technology when using a transmission gate as a select gate within EEPROM devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.