Half-power buffer amplifier
US8310280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2011 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Jul 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45726
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A half-power buffer amplifier is disclosed. A buffer stage includes a first-half buffer stage and a second-half buffer stage, wherein an output of the first-half buffer stage is controllably fed back to a rail-to-rail differential amplifier, and an output of the second-half buffer stage is controllably fed back to the rail-to-rail differential amplifier. The switch network controls the connection between the outputs of the buffer stage and an output node of the half-power buffer amplifier in a manner such that a same pixel, with respect to different frames, of a display panel is driven by the same rail-to-rail differential amplifier. In one embodiment, the rail-to-rail differential amplifier and the buffer stage comprise half-power transistors operated within and powered by half of a full range spanning from power to ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.