A Low-Power Scan Driver Circuit for Oxide TFTs
- Resource Type
- Periodical
- Authors
- Pi, J.-E.; Ryu, M.; Hwang, C.-S.; Yang, S.; Park, S.-H.K.; Yoon, S.-M.; Leem, H.; Kim, Y.; Kim, J.; Oh, H. S.; Park, K.
- Source
- IEEE Electron Device Letters IEEE Electron Device Lett. Electron Device Letters, IEEE. 33(8):1144-1146 Aug, 2012
- Subject
- Engineered Materials, Dielectrics and Plasmas
Components, Circuits, Devices and Systems
Thin film transistors
Power demand
Integrated circuit modeling
Driver circuits
Clocks
Logic gates
Load modeling
Low power
negative threshold voltage
oxide thin-film transistors (TFTs)
scan driver
- Language
- ISSN
- 0741-3106
1558-0563
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.