An AMOLED Pixel Circuit Based on LTPS Thin-film Transistors with Mono-Type Scanning Driving
| Autor: | Heng Luo, Qing Wu, Congwei Liao, Lianwen Deng, Ke Jianyuan, Liying Zhen, Shengxiang Huang |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Computer Networks and Communications IR drop ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION lcsh:TK7800-8360 02 engineering and technology Hardware_PERFORMANCEANDRELIABILITY 01 natural sciences law.invention law AMOLED 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Gate driver Hardware_INTEGRATEDCIRCUITS Electrical and Electronic Engineering Power network design Monte Carlo Electronic circuit Diode 010302 applied physics Pixel business.industry 020208 electrical & electronic engineering Transistor lcsh:Electronics LTPS TFT pixel circuit Active matrix Hardware and Architecture Control and Systems Engineering Signal Processing Optoelectronics business Hardware_LOGICDESIGN |
| Zdroj: | Electronics Volume 9 Issue 4 Electronics, Vol 9, Iss 574, p 574 (2020) |
| ISSN: | 2079-9292 |
| DOI: | 10.3390/electronics9040574 |
| Popis: | Using low-temperature poly-silicon thin-film transistors (LTPS TFTs) as a basis, a pixel circuit for an active matrix organic light-emitting diode (AMOLED) with narrow bezel displays was developed. The pixel circuit features mono-type scanning signals, elimination of static power lines, and pixel-integrated emitting control functions. Therefore, gate driver circuits of the display bezel can be simplified efficiently. In addition, the pixel circuit has a high-resolution design due to an increase of the pulse width of the scan signal to extend the threshold voltage and internal&ndash resistance drop (IR drop) detection period. Further, regarding the influences of process&ndash voltage&ndash temperature (PVT) variation in the pixel circuit, comparison investigations were carried out with the proposed circuit and other pixel circuits with mono-type scanning signals using Monte Carlo analysis. The feasibility of the proposed pixel circuit is well demonstrated, as the current variations can be reduced to 2.1% for the supplied power reduced from 5 V to 3 V due to IR drop, and the current variation is as low as 10.6% with operating temperatures from &ndash 40 degrees to 85 degrees. |
| Databáze: | OpenAIRE |
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