Pixel circuit, its driving method, light-emitting diode display panel, and display device
US9984272B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 6, 2015 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Jul 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2354/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The pixel circuit includes a display driving module connected to a first scanning line, a second scanning line, a control line, a data line, a second signal source, a third signal source and an anode of an LED, and configured to, under the control of a first scanning signal, a second scanning signal and a control signal, compensate for a threshold voltage of a driving transistor using a data signal and a second signal, so that a light-emitting driving signal for the LED is irrelevant to the threshold voltage of the driving transistor; and a fingerprint identification module connected to the first scanning line, the second scanning line, a fourth signal source and a signal read line, and configured to, under the control of the first scanning signal and the second scanning signal, identify a fingerprint and detect a touch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.