Pixel compensation circuit
US10262589B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2017 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Sep 12, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel compensation circuit is arranged for compensating the critical parameter associated with the electrical properties of the components in thin film transistors of an active matrix organic light emitting diode display or similar illumination systems to avoid uneven brightness resulted from the voltage drop effect. The pixel compensation circuit is defined in a sub-pixel area, wherein there are eight thin film transistors and one capacitor, and the circuit is operated by two control signals. In contrast, three control signals are required in the conventional technologies. The fewer control signals are required, which is benefit to the flexibility of the layout and design of specification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.