Shift register, scan driving circuit and display device having the same
US7899148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2007 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Apr 21, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/184
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A shift register includes a plurality of stages, each of the stages generate an output signal, in sequence. Each of the shift register includes a present stage and a first capacitor. The present stage outputs an output signal based on one of a scan start signal and a carry signal of the previous stage. The first capacitor reduces a ripple component of the carry signal of the present stage which activates the next stage. Therefore, a carry signal having a reduced ripple component is supplied to the next stage, so that a transient current is intercepted at a transistor receiving the carry signal, which is arranged in the next stage, thus ensuring reliability of the shift register.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.