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A Low-Power Scan Driver Circuit for Oxide TFTs
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- Authors
- Jae-Eun Pi, MinKi Ryu, Chi-Sun Hwang, ShinHyuk Yang, Sang-Hee Ko Park, Sung-Min Yoon, HongKyun Leem, YounKyung Kim, JoonDong Kim, Hwan Sool Oh, KeeChan Park
- Issue Date
- 2012-08
- Citation
- IEEE Electron Device Letters, v.33, no.8, pp.1144-1146
- ISSN
- 0741-3106
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- The scan driver composed of oxide thin-film transistors (TFTs) tends to exhibit anomalously high power consumption because the oxide TFT often has negative threshold voltage. In order to resolve this problem, we have invented a new scan driver circuit in which most TFTs are turned off with negative V GS and no TFT with zero V GS is located between the high and low supply voltages. As a result, we could maintain the power consumption within six times of the normal value in spite of the negative threshold voltage of the oxide TFT. © 2012 IEEE.
- KSP Keywords
- Driver circuit, High power, Low-Power, Oxide TFTs, Power Consumption, Thin-Film Transistor(TFT), oxide thin-film transistors, thin film(TF), threshold voltage(Vth)