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| Content Provider | IET Digital Library |
|---|---|
| Author | Singh, Aryamick Goswami, Manish Kandpal, Kavindra |
| Abstract | This study presents a novel voltage-programmed, amorphous-indium–gallium–zinc oxide (a-IGZO) thin-film transistor (TFT)-based active-matrix organic light-emitting diode (AMOLED) pixel circuit. The circuit utilises the threshold voltage (V TH) sensing ability of a diode-connected transistor to compensate for the spatial as well as the temporal variation of the threshold voltage of the driving transistor and supply a constant current to the OLED. The circuit has been simulated in Cadence Spectre using a-IGZO TFT and OLED simulation program with integrated circuit emphasis (SPICE) models, and the analysis is presented to prove the V TH compensating capability of the proposed circuit. For small currents, about 50 nA, the error is suppressed to <9% whereas for large currents, about 2.5 µA, the error is only 1.05%. This performance has been achieved using only five TFTs and two storage capacitors. |
| Starting Page | 876 |
| Ending Page | 880 |
| Page Count | 5 |
| ISSN | 1751858X |
| Volume Number | 14 |
| e-ISSN | 17518598 |
| Issue Number | Issue 6, Sep (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-cds/14/6 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-cds.2020.0070 |
| Journal | IET Circuits, Devices & Systems |
| Publisher Date | 2020-05-26 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | AMOLED Displays Amorphous Semiconductors Amorphous-indium–gallium–zinc Oxide Thin-film Transistor-based Active-matrix Organic Light-emitting Diode Pixel Circuit Cadence Spectre Capacitor Design And Testing Diode-connected A-IGZO TFT Display Technology Driving Transistor Equivalent Circuit Field Effect Device Gallium Compound Indium Compound InGaZnO LED Displays Light Emitting Diode OLED SPICE Model Organic Light Emitting Diode Semiconductor Device Modelling Spice Storage Capacitor Thin Film Transistors Threshold Voltage Sensing Ability Voltage-programmed VTH Compensating Pixel Circuit Zinc Compound |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Electrical and Electronic Engineering |
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