A Low-Power Scan Driver Circuit for Oxide TFTs

作者：Pi Jae Eun^*; Ryu MinKi; Hwang Chi Sun; Yang ShinHyuk; Park Sang Hee Ko; Yoon Sung Min; Leem HongKyun; Kim YounKyung; Kim JoonDong; Oh Hwan Sool; Park KeeChan

来源：IEEE Electron Device Letters, 2012, 33(8): 1144-1146.

DOI：10.1109/LED.2012.2200873

• Low power
• negative threshold voltage
• oxide thin-film transistors (TFTs)
• scan driver

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.

• 出版日期2012-8