Bootstrap circuit, and shift register, scanning circuit, display device using the same
US8531376B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2006 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Apr 22, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
There is disclosed a shift register comprising a bootstrap circuit that outputs a voltage of the supply voltage to the output when the voltage of a first node becomes higher or lower than the supply voltage. The shift register comprises: two or more transistors connected in series to the first node; a device for supplying the voltage to a second node between the transistors such that the voltage between the drains and sources of the transistors becomes below the supply voltage; a first input transistor connected to the first node, and the gate electrode thereof is connected to a first input terminal as well; and an output transistor connected to the output terminal and the clock signal while having the gate electrode connected to the first node, wherein the gate electrode of the output transistor is not opened except for the bootstrap period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.