Voltage amplifier and driving device of display device using the voltage amplifier
US8314764B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2008 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | May 5, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45632
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifying circuit of a display device including a plurality of pixels includes an input unit, a bias unit, and an output unit. The input unit is coupled between a first power source for supplying a first voltage and a second power source for supplying a second voltage, receives a first input signal and a second input signal, and is controlled by the first and second input signals. The bias unit receives a bias voltage for operating the input unit, and includes a first node and a second node controllable by the input unit. The output unit applies an output voltage to a pixel by using a first output transistor turned on/off by a signal applied to the first node and a second output transistor turned on/off by a signal applied to the second node, and the first output transistor is a different type to the second output transistor. In this instance, the input unit includes a first input transistor having a first terminal coupled to a first power source and being turned on/off by a first input signal and a second input transistor of the same type as the first input transistor, having a first terminal coupled to the first power source, and being turned on/off by a second input signal. …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.