Pixel of display
US8294643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2005 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Sep 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel of display is used in an Organic light emitted diode (OLED) display. Driving Circuit of the OLED display outputs a data current and a scanning signal. The pixel of display includes a switch circuit, a first transistor, a second transistor, a capacitor, a switch and a lighting emitting element. The switch circuit, which is controlled by the scanning signal, includes an input end for receiving the data current. When the scanning signal is enabled, a first and a second ends of the switch circuit respectively output a first and a second currents. The second current charges the capacitor. The voltage between the gate and the source of the first transistor is stored in the capacitor. When the scanning signal is disabled, the switch is turned on. The first and the second transistors respectively output currents corresponding to the cross-voltage of the capacitor to the lighting emitting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.