Driving and scanning circuit, display screen and mobile terminal
US10217804B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 2016 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Aug 17, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2250/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A driving and scanning circuit, a display screen and a mobile terminal, comprise driving and scanning units which are distributed in an array, each comprising an AMOLED driving unit for driving an OLED to emit light and a fingerprint scanning unit for forming pixel capacitances, wherein the AMOLED driving unit comprises a first thin film transistor, a second thin film transistor, a third thin film transistor and an OLED, the first thin film transistor is connected with a driving voltage and a first switching voltage, the second thin film transistor and the third thin film transistor are respectively connected with an anode terminal and a cathode terminal, and the OLED is positioned between the cathode terminal and the second thin film transistor; the cathode terminal also comprises a fourth thin film transistor connected with a second driving voltage and a second switching voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.