Shift register circuit, driving circuit for an electrooptical device, electrooptical device, and electronic apparatus
US6670944B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1999 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Nov 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0289
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A driving circuit for driving an electrooptical device is provided and may include a shift register circuit including a plurality of stages of unit circuits connected in a cascaded fashion for shifting a transfer start pulse from one stage to another in response to clock signals with a large logic swing, and level shifters each coupled with one or more stages of unit circuits of the shift register circuit. The level shifters serve to convert a clock signal and an inverted clock signal with a small logic swing to clock signals with the large logic swing and supply the resultant clock signals to the corresponding one or more stages of unit circuits, thereby allowing a reduction in power consumption due to the capacitance associated with lines used to supply signals with the large logic swing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.