Pixel circuit and display apparatus
US8502814B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 2009 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Jan 4, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pixel circuit including a light emitting element, a driving transistor, with a drain terminal thereof connected to a cathode terminal of the light emitting element, that applies a drive current to the light emitting element, a capacitor element connected to a gate terminal of the driving transistor, and a switching transistor connected between a first terminal of the capacitor element on the side of the gate terminal and a data line through which a desired program signal flows, in which the driving transistor is an inorganic oxide thin film transistor whose OFF-operation threshold voltage is a negative voltage, and a source terminal of the driving transistor and a second terminal of the capacitor element are connected to a common power source that supplies a predetermined common voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.