Shift register and shift register apparatus thereof
US7590214B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2008 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Jan 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C27/024
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A shift register and a shift register apparatus are provided. The shift register includes a plurality of shift register apparatus, and each shift register apparatus comprises a pre-charge circuit, a pull-up circuit and a pull-down circuit. The pre-charge circuit is used for sampling an input signal according to a first clock signal and a second clock signal respectively and generate a first charging signal and a second charging signal respectively. The pull-up circuit is coupled to the pre-charge circuit. The pull-up circuit receives the third clock signal and the first charging signal to output an output signal accordingly. The pull-down circuit is coupled to the pre-charge circuit and the pull-up circuit. The pull-down circuit receives the fourth clock signal and the second charging signal to decide whether to couple the output signal to a common potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.