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

Research output: Contribution to journalConference article

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 languageEnglish
Pages (from-to)1242-1245
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume49
Issue number1
DOIs
Publication statusPublished - 2018 Jan 1
EventSID Symposium, Seminar, and Exhibition 2018, Display Week 2018 - Los Angeles, United States
Duration: 2018 May 202018 May 25

Fingerprint

Gallium
Thin film transistors
Zinc oxide
Liquid crystal displays
Indium
Oxide films
Pixels
Networks (circuits)
Electric potential
Integrated circuits

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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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 = "Chih-Lung Lin and Lai, {Po Cheng} and Chen, {Fu Hsing} and Hung, {Chia Che} and Chen, {Bo Shu}",
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Novel pixel circuit with inverter structure based on a-IGZO TFT for blue-phase liquid crystal displays. / Lin, Chih-Lung; Lai, Po Cheng; Chen, Fu Hsing; Hung, Chia Che; Chen, Bo Shu.

In: Digest of Technical Papers - SID International Symposium, Vol. 49, No. 1, 01.01.2018, p. 1242-1245.

Research output: Contribution to journalConference article

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

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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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