Investigation of source-follower type analog buffer using low temperature poly-Si TFTs
| Autor: | Ya-Hsiang Tai, Chun Chien Tsai, Bo Ting Chen, Yu Ju Kuo, Kai Fang Wei, Huang-Chung Cheng, Ying Jyun Wei, Chun Yao Huang |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
business.industry Electrical engineering Hardware_PERFORMANCEANDRELIABILITY Integrated circuit Discrete circuit Condensed Matter Physics Driver circuit Active load Electronic Optical and Magnetic Materials law.invention Active matrix Threshold voltage law Thin-film transistor Hardware_INTEGRATEDCIRCUITS Materials Chemistry Optoelectronics Electrical and Electronic Engineering business Hardware_LOGICDESIGN Linear circuit |
| Zdroj: | Solid-State Electronics. 51:354-359 |
| ISSN: | 0038-1101 |
| DOI: | 10.1016/j.sse.2006.12.007 |
| Popis: | A new source follower circuit using low-temperature polycrystalline silicon thin film transistors (LTPS-TFTs) as analog buffer for the integrated data driver circuit of active matrix liquid crystal displays (AMLCDs) and active matrix light emitting diodes (AMOLEDs) is proposed and measured. Threshold voltage compensation circuit with two n-type thin film transistors, a capacitor, and four switches structure is used to enhance image quality for the display. The threshold voltage difference of driving TFTs and the unsaturated of output voltage are eliminated in this circuit. An active load is added and a calibration operation is applied to study the effects on the source follower circuit, the transistor operation mode region is also discussed. The proposed circuit is capable of minimizing the variation from both the signal timing and the device characteristics through the simulation and measured results. |
| Databáze: | OpenAIRE |
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