Novel Pixel Circuit Using Coupling Method to Achieve High Driving Voltage for Blue-Phase LCDs

Chih Lung Lin; Po Cheng Lai; Mao Hsun Cheng; Po Chun Lai; Chia Lun Lee

doi:10.1109/TED.2017.2756682

Novel Pixel Circuit Using Coupling Method to Achieve High Driving Voltage for Blue-Phase LCDs

Chih Lung Lin, Po Cheng Lai, Mao Hsun Cheng, Po Chun Lai, Chia Lun Lee

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

This paper presents a new pixel circuit that uses amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) for use in in-plane switching blue-phase liquid-crystal displays (IPS BPLCDs). The proposed pixel circuit has a simple structure that involves only three TFTs and two capacitors. To drive the high transmittance of the BPLCs, the coupling mode with a two-voltage-level signal is designed to produce a higher operating voltage. To confirm the feasibility of the proposed pixel circuit, the electrical characteristics of a fabricated a-IGZO TFT are measured and used to construct the RPI simulation model in HSPICE. Simulation results demonstrate that the maximum operating voltage is 29.884 V with an input data voltage of 15 V, so the required voltage of high transmittance of BPLCs is achieved.

Original language	English
Article number	8076854
Pages (from-to)	4768-4771
Number of pages	4
Journal	IEEE Transactions on Electron Devices
Volume	64
Issue number	11
DOIs	https://doi.org/10.1109/TED.2017.2756682
Publication status	Published - 2017 Nov

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TED.2017.2756682

Cite this

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title = "Novel Pixel Circuit Using Coupling Method to Achieve High Driving Voltage for Blue-Phase LCDs",

abstract = "This paper presents a new pixel circuit that uses amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) for use in in-plane switching blue-phase liquid-crystal displays (IPS BPLCDs). The proposed pixel circuit has a simple structure that involves only three TFTs and two capacitors. To drive the high transmittance of the BPLCs, the coupling mode with a two-voltage-level signal is designed to produce a higher operating voltage. To confirm the feasibility of the proposed pixel circuit, the electrical characteristics of a fabricated a-IGZO TFT are measured and used to construct the RPI simulation model in HSPICE. Simulation results demonstrate that the maximum operating voltage is 29.884 V with an input data voltage of 15 V, so the required voltage of high transmittance of BPLCs is achieved.",

author = "Lin, {Chih Lung} and Lai, {Po Cheng} and Cheng, {Mao Hsun} and Lai, {Po Chun} and Lee, {Chia Lun}",

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T1 - Novel Pixel Circuit Using Coupling Method to Achieve High Driving Voltage for Blue-Phase LCDs

AU - Lin, Chih Lung

AU - Lai, Po Cheng

AU - Cheng, Mao Hsun

AU - Lai, Po Chun

AU - Lee, Chia Lun

PY - 2017/11

Y1 - 2017/11

N2 - This paper presents a new pixel circuit that uses amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) for use in in-plane switching blue-phase liquid-crystal displays (IPS BPLCDs). The proposed pixel circuit has a simple structure that involves only three TFTs and two capacitors. To drive the high transmittance of the BPLCs, the coupling mode with a two-voltage-level signal is designed to produce a higher operating voltage. To confirm the feasibility of the proposed pixel circuit, the electrical characteristics of a fabricated a-IGZO TFT are measured and used to construct the RPI simulation model in HSPICE. Simulation results demonstrate that the maximum operating voltage is 29.884 V with an input data voltage of 15 V, so the required voltage of high transmittance of BPLCs is achieved.

AB - This paper presents a new pixel circuit that uses amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) for use in in-plane switching blue-phase liquid-crystal displays (IPS BPLCDs). The proposed pixel circuit has a simple structure that involves only three TFTs and two capacitors. To drive the high transmittance of the BPLCs, the coupling mode with a two-voltage-level signal is designed to produce a higher operating voltage. To confirm the feasibility of the proposed pixel circuit, the electrical characteristics of a fabricated a-IGZO TFT are measured and used to construct the RPI simulation model in HSPICE. Simulation results demonstrate that the maximum operating voltage is 29.884 V with an input data voltage of 15 V, so the required voltage of high transmittance of BPLCs is achieved.

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Novel Pixel Circuit Using Coupling Method to Achieve High Driving Voltage for Blue-Phase LCDs

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