Display device
US7511709B2 · kind B2 · utility
92Cited by
24References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2004 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Jan 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0289
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
When semi-amorphous TFTs are used for forming a signal line driver circuit and a pixel, a large amplitude is required for driving the pixel, and a large power supply voltage is thus needed. On the other hand, when a shift register is made up of transistors having a single conductivity, a bootstrap circuit is required, and a voltage over a power supply is applied to a specific element. Therefore, not both the driving amplitude and the reliability can be achieved with a single power supply. According to the invention, a level shifter having a single conductivity is provided to solve such a problem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.