Novel pixel circuit with inverter structure based on a-IGZO TFT for blue-phase liquid crystal displays

Chih Lung Lin; Po Cheng Lai; Fu Hsing Chen; Chia Che Hung; Bo Shu Chen

doi:10.1002/sdtp.12135

Novel pixel circuit with inverter structure based on a-IGZO TFT for blue-phase liquid crystal displays

Chih Lung Lin, Po Cheng Lai, Fu Hsing Chen, Chia Che Hung, Bo Shu Chen

Department of Electrical Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

This work presents a new pixel circuit with amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) for blue-phase liquid crystal displays (BPLCDs). The proposed circuit adopts two pairs of inverter structures to ameliorate the frequency effect of the BPLCs for generating the accurate gray level voltages. Furthermore, to achieve the maximum transmittance of BPLCs, the wide range of the operation voltage is performed. Simulation results show that the proposed pixel circuit produces an operation voltage range of −29.329 V to 29.748 V when the practical source driver integrated circuits (ICs) only supplies an output voltage swing of 0 V to 15 V, successfully inverting the polarity of the BPLCs without the common signal.

Original language	English
Pages (from-to)	1242-1245
Number of pages	4
Journal	Digest of Technical Papers - SID International Symposium
Volume	49
Issue number	1
DOIs	https://doi.org/10.1002/sdtp.12135
Publication status	Published - 2018 Jan 1
Event	SID Symposium, Seminar, and Exhibition 2018, Display Week 2018 - Los Angeles, United States Duration: 2018 May 20 → 2018 May 25

All Science Journal Classification (ASJC) codes

Engineering(all)

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10.1002/sdtp.12135

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@article{538b4bec10724aaa98258dd828858d30,

title = "Novel pixel circuit with inverter structure based on a-IGZO TFT for blue-phase liquid crystal displays",

abstract = "This work presents a new pixel circuit with amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) for blue-phase liquid crystal displays (BPLCDs). The proposed circuit adopts two pairs of inverter structures to ameliorate the frequency effect of the BPLCs for generating the accurate gray level voltages. Furthermore, to achieve the maximum transmittance of BPLCs, the wide range of the operation voltage is performed. Simulation results show that the proposed pixel circuit produces an operation voltage range of −29.329 V to 29.748 V when the practical source driver integrated circuits (ICs) only supplies an output voltage swing of 0 V to 15 V, successfully inverting the polarity of the BPLCs without the common signal.",

author = "Lin, {Chih Lung} and Lai, {Po Cheng} and Chen, {Fu Hsing} and Hung, {Chia Che} and Chen, {Bo Shu}",

year = "2018",

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doi = "10.1002/sdtp.12135",

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pages = "1242--1245",

journal = "Digest of Technical Papers - SID International Symposium",

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note = "SID Symposium, Seminar, and Exhibition 2018, Display Week 2018 ; Conference date: 20-05-2018 Through 25-05-2018",

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TY - JOUR

T1 - Novel pixel circuit with inverter structure based on a-IGZO TFT for blue-phase liquid crystal displays

AU - Lin, Chih Lung

AU - Lai, Po Cheng

AU - Chen, Fu Hsing

AU - Hung, Chia Che

AU - Chen, Bo Shu

PY - 2018/1/1

Y1 - 2018/1/1

N2 - This work presents a new pixel circuit with amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) for blue-phase liquid crystal displays (BPLCDs). The proposed circuit adopts two pairs of inverter structures to ameliorate the frequency effect of the BPLCs for generating the accurate gray level voltages. Furthermore, to achieve the maximum transmittance of BPLCs, the wide range of the operation voltage is performed. Simulation results show that the proposed pixel circuit produces an operation voltage range of −29.329 V to 29.748 V when the practical source driver integrated circuits (ICs) only supplies an output voltage swing of 0 V to 15 V, successfully inverting the polarity of the BPLCs without the common signal.

AB - This work presents a new pixel circuit with amorphous indium-gallium-zinc-oxide thin-film transistors (a-IGZO TFTs) for blue-phase liquid crystal displays (BPLCDs). The proposed circuit adopts two pairs of inverter structures to ameliorate the frequency effect of the BPLCs for generating the accurate gray level voltages. Furthermore, to achieve the maximum transmittance of BPLCs, the wide range of the operation voltage is performed. Simulation results show that the proposed pixel circuit produces an operation voltage range of −29.329 V to 29.748 V when the practical source driver integrated circuits (ICs) only supplies an output voltage swing of 0 V to 15 V, successfully inverting the polarity of the BPLCs without the common signal.

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