A Shift Register for Depletion-Mode Oxide TFTs with Very Low Power Consumption

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概要

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• The shift register comprised of metal-oxide thin-film transistors (TFTs) is apt to exhibit anomalously high power consumption because the oxide TFT often has depletion-mode characteristic. We have developed a new shift register circuit in which one of the pull-down TFTs is controlled by capacitive coupling with the clock signal and the input carry signal. Employing this structure, the TFTs with non-zero VDS are always turned off with negative VGS. As a result, unnecessary current through the TFTs is eliminated and the power consumption of the new circuit decreases to the half of our previous one when the threshold voltage of the TFT is -5 V.

著者

• Lee Jaewon

  Department Of Chemical Engineering Sungkyunkwan University

• Kim Sangyun

  Department Of Neurology Seoul National University College Of Medicine

• Oh HwanSool

  Department of Electronics Engineering, Konkuk University

• Jang JaeHyeong

  Department of Electronics Engineering, Konkuk University

• Cho SooHo

  Department of Electronics Engineering, Konkuk University

• Park KeeChan

  Department of Electronics Engineering, Konkuk University

• Kim SeungO

  Department of Electronics Engineering, Konkuk University

• Kim SangYeon

  Department of Electronics Engineering, Konkuk University

• Kim JinTae

  Department of Electronics Engineering, Konkuk University

• PARK KeeChan

  Department of Electronic Engineering, Konkuk University

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