Amorphous IGZO TFT-Based Pixel Buffer to Suppress Blue-Phase Liquid Crystal High-Frequency Effect

Chih Lung Lin, Po Syun Chen, Po Cheng Lai, Chih Cheng Hsu, Jui Hung Chang

研究成果: Article

2 引文 (Scopus)

摘要

This letter discusses the frequency effect of polymer-stabilized blue-phase liquid crystal (BPLC) on the data voltages of a conventional pixel circuit and develops a new pixel buffer that exploits amorphous indium-gallium-zinc-oxide thin-film transistors (TFTs). During high-speed operations, BPLC seriously distorts data voltages because of the highly frequency-dependent dielectric anisotropy. To lessen the frequency-dependent effect of BPLC, a source-follower structure is integrated into the proposed pixel buffer to prolong the charging time of the BPLC cell. The experimental results show that the source-follower yields linear output characteristics. Further compensation for TFT VTH shifts and suppressing the leakage current are confirmed to make the data voltages on the BPLC cell highly uniform and stable.

原文English
文章編號8070321
頁(從 - 到)1673-1675
頁數3
期刊IEEE Electron Device Letters
38
發行號12
DOIs
出版狀態Published - 2017 十二月

指紋

Liquid Crystals
Amorphous films
Thin film transistors
Liquid crystals
Buffers
Pixels
Electric potential
Zinc Oxide
Gallium
Indium
Zinc oxide
Leakage currents
Oxide films
Polymers
Anisotropy
Networks (circuits)

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

引用此文

Lin, Chih Lung ; Chen, Po Syun ; Lai, Po Cheng ; Hsu, Chih Cheng ; Chang, Jui Hung. / Amorphous IGZO TFT-Based Pixel Buffer to Suppress Blue-Phase Liquid Crystal High-Frequency Effect. 於: IEEE Electron Device Letters. 2017 ; 卷 38, 編號 12. 頁 1673-1675.
@article{cf6c88dc9fbf430dba02b5138238b320,
title = "Amorphous IGZO TFT-Based Pixel Buffer to Suppress Blue-Phase Liquid Crystal High-Frequency Effect",
abstract = "This letter discusses the frequency effect of polymer-stabilized blue-phase liquid crystal (BPLC) on the data voltages of a conventional pixel circuit and develops a new pixel buffer that exploits amorphous indium-gallium-zinc-oxide thin-film transistors (TFTs). During high-speed operations, BPLC seriously distorts data voltages because of the highly frequency-dependent dielectric anisotropy. To lessen the frequency-dependent effect of BPLC, a source-follower structure is integrated into the proposed pixel buffer to prolong the charging time of the BPLC cell. The experimental results show that the source-follower yields linear output characteristics. Further compensation for TFT VTH shifts and suppressing the leakage current are confirmed to make the data voltages on the BPLC cell highly uniform and stable.",
author = "Lin, {Chih Lung} and Chen, {Po Syun} and Lai, {Po Cheng} and Hsu, {Chih Cheng} and Chang, {Jui Hung}",
year = "2017",
month = "12",
doi = "10.1109/LED.2017.2763610",
language = "English",
volume = "38",
pages = "1673--1675",
journal = "IEEE Electron Device Letters",
issn = "0741-3106",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "12",

}

Amorphous IGZO TFT-Based Pixel Buffer to Suppress Blue-Phase Liquid Crystal High-Frequency Effect. / Lin, Chih Lung; Chen, Po Syun; Lai, Po Cheng; Hsu, Chih Cheng; Chang, Jui Hung.

於: IEEE Electron Device Letters, 卷 38, 編號 12, 8070321, 12.2017, p. 1673-1675.

研究成果: Article

TY - JOUR

T1 - Amorphous IGZO TFT-Based Pixel Buffer to Suppress Blue-Phase Liquid Crystal High-Frequency Effect

AU - Lin, Chih Lung

AU - Chen, Po Syun

AU - Lai, Po Cheng

AU - Hsu, Chih Cheng

AU - Chang, Jui Hung

PY - 2017/12

Y1 - 2017/12

N2 - This letter discusses the frequency effect of polymer-stabilized blue-phase liquid crystal (BPLC) on the data voltages of a conventional pixel circuit and develops a new pixel buffer that exploits amorphous indium-gallium-zinc-oxide thin-film transistors (TFTs). During high-speed operations, BPLC seriously distorts data voltages because of the highly frequency-dependent dielectric anisotropy. To lessen the frequency-dependent effect of BPLC, a source-follower structure is integrated into the proposed pixel buffer to prolong the charging time of the BPLC cell. The experimental results show that the source-follower yields linear output characteristics. Further compensation for TFT VTH shifts and suppressing the leakage current are confirmed to make the data voltages on the BPLC cell highly uniform and stable.

AB - This letter discusses the frequency effect of polymer-stabilized blue-phase liquid crystal (BPLC) on the data voltages of a conventional pixel circuit and develops a new pixel buffer that exploits amorphous indium-gallium-zinc-oxide thin-film transistors (TFTs). During high-speed operations, BPLC seriously distorts data voltages because of the highly frequency-dependent dielectric anisotropy. To lessen the frequency-dependent effect of BPLC, a source-follower structure is integrated into the proposed pixel buffer to prolong the charging time of the BPLC cell. The experimental results show that the source-follower yields linear output characteristics. Further compensation for TFT VTH shifts and suppressing the leakage current are confirmed to make the data voltages on the BPLC cell highly uniform and stable.

UR - http://www.scopus.com/inward/record.url?scp=85040539019&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85040539019&partnerID=8YFLogxK

U2 - 10.1109/LED.2017.2763610

DO - 10.1109/LED.2017.2763610

M3 - Article

AN - SCOPUS:85040539019

VL - 38

SP - 1673

EP - 1675

JO - IEEE Electron Device Letters

JF - IEEE Electron Device Letters

SN - 0741-3106

IS - 12

M1 - 8070321

ER -