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Vth Compensation Current Source with Poly-Si TFT for System-On-Panel  

Hong, Moon-Pyo (Department of Electronics Eng., Suwon University)
Jeong, Ju-Young (Department of Electronics Eng., Suwon University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.43, no.10, 2006 , pp. 61-67 More about this Journal
Abstract
We developed a constant current source which is insensitive to threshold voltage variation caused by irregular grain boundary distribution in polycrystalline silicon. The proposed current source has superior saturation characteristics over wide range of input voltages as well as small current error compared to the previously reported Vth compensated sources. We measured the circuit performance and error in current due to parameter variation by using HSPICE.
Keywords
SOP; LTPS TFT; Vth Compensation; Current Source;
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