Cell panel electrical test for evaluating the electrical characteristics of liquid crystal displays

Yasuhiro Miyake, Atsuto Ota, Hidekazu Nishimura

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Electrical models of liquid crystal display (LCD) have been studied and used in design simulation. Using the right LCD models is indispensable to accomplish high-quality and highly reliable LCDs. This paper presents a cell panel electrical test (Cell-E Test) for evaluating the electrical characteristics of LCDs. The Cell-E Test was derived from in-process electrical testing for thin film transistor arrays, and utilizes charge measurement for measuring the capacitance value of a pixel. The capacitance-voltage (C-V) and capacitance-time (C-t) characteristics can be measured using a sweeping-applied voltage and based on the period of applying voltage in the Cell-E Test. In this study, actual C-V and C-t characteristics were measured by applying the Cell-E Test to a twisted-nematic active-matrix LCD (TN AM-LCD). The parameters of liquid crystal models were extracted from the data measured using the least-squares method, to show that design models can be verified with the actual parameters of cell panels through the Cell-E Test.

Original languageEnglish
Pages (from-to)17-21
Number of pages5
JournalJournal of Information Display
Volume16
Issue number1
DOIs
Publication statusPublished - 2015 Jan 2

Fingerprint

Liquid crystal displays
Capacitance
Electric potential
Liquid Crystals
Thin film transistors
Liquid crystals
Pixels
Testing

Keywords

  • cell panel electrical test
  • electrical model
  • electrical test
  • liquid crystal display
  • parameter extraction

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Materials Science(all)

Cite this

Cell panel electrical test for evaluating the electrical characteristics of liquid crystal displays. / Miyake, Yasuhiro; Ota, Atsuto; Nishimura, Hidekazu.

In: Journal of Information Display, Vol. 16, No. 1, 02.01.2015, p. 17-21.

Research output: Contribution to journalArticle

@article{98a0f2664ed643e398701eeef81b1629,
title = "Cell panel electrical test for evaluating the electrical characteristics of liquid crystal displays",
abstract = "Electrical models of liquid crystal display (LCD) have been studied and used in design simulation. Using the right LCD models is indispensable to accomplish high-quality and highly reliable LCDs. This paper presents a cell panel electrical test (Cell-E Test) for evaluating the electrical characteristics of LCDs. The Cell-E Test was derived from in-process electrical testing for thin film transistor arrays, and utilizes charge measurement for measuring the capacitance value of a pixel. The capacitance-voltage (C-V) and capacitance-time (C-t) characteristics can be measured using a sweeping-applied voltage and based on the period of applying voltage in the Cell-E Test. In this study, actual C-V and C-t characteristics were measured by applying the Cell-E Test to a twisted-nematic active-matrix LCD (TN AM-LCD). The parameters of liquid crystal models were extracted from the data measured using the least-squares method, to show that design models can be verified with the actual parameters of cell panels through the Cell-E Test.",
keywords = "cell panel electrical test, electrical model, electrical test, liquid crystal display, parameter extraction",
author = "Yasuhiro Miyake and Atsuto Ota and Hidekazu Nishimura",
year = "2015",
month = "1",
day = "2",
doi = "10.1080/15980316.2014.990937",
language = "English",
volume = "16",
pages = "17--21",
journal = "Journal of Information Display",
issn = "1598-0316",
publisher = "Korean Information Display Society",
number = "1",

}

TY - JOUR

T1 - Cell panel electrical test for evaluating the electrical characteristics of liquid crystal displays

AU - Miyake, Yasuhiro

AU - Ota, Atsuto

AU - Nishimura, Hidekazu

PY - 2015/1/2

Y1 - 2015/1/2

N2 - Electrical models of liquid crystal display (LCD) have been studied and used in design simulation. Using the right LCD models is indispensable to accomplish high-quality and highly reliable LCDs. This paper presents a cell panel electrical test (Cell-E Test) for evaluating the electrical characteristics of LCDs. The Cell-E Test was derived from in-process electrical testing for thin film transistor arrays, and utilizes charge measurement for measuring the capacitance value of a pixel. The capacitance-voltage (C-V) and capacitance-time (C-t) characteristics can be measured using a sweeping-applied voltage and based on the period of applying voltage in the Cell-E Test. In this study, actual C-V and C-t characteristics were measured by applying the Cell-E Test to a twisted-nematic active-matrix LCD (TN AM-LCD). The parameters of liquid crystal models were extracted from the data measured using the least-squares method, to show that design models can be verified with the actual parameters of cell panels through the Cell-E Test.

AB - Electrical models of liquid crystal display (LCD) have been studied and used in design simulation. Using the right LCD models is indispensable to accomplish high-quality and highly reliable LCDs. This paper presents a cell panel electrical test (Cell-E Test) for evaluating the electrical characteristics of LCDs. The Cell-E Test was derived from in-process electrical testing for thin film transistor arrays, and utilizes charge measurement for measuring the capacitance value of a pixel. The capacitance-voltage (C-V) and capacitance-time (C-t) characteristics can be measured using a sweeping-applied voltage and based on the period of applying voltage in the Cell-E Test. In this study, actual C-V and C-t characteristics were measured by applying the Cell-E Test to a twisted-nematic active-matrix LCD (TN AM-LCD). The parameters of liquid crystal models were extracted from the data measured using the least-squares method, to show that design models can be verified with the actual parameters of cell panels through the Cell-E Test.

KW - cell panel electrical test

KW - electrical model

KW - electrical test

KW - liquid crystal display

KW - parameter extraction

UR - http://www.scopus.com/inward/record.url?scp=84924995723&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84924995723&partnerID=8YFLogxK

U2 - 10.1080/15980316.2014.990937

DO - 10.1080/15980316.2014.990937

M3 - Article

AN - SCOPUS:84924995723

VL - 16

SP - 17

EP - 21

JO - Journal of Information Display

JF - Journal of Information Display

SN - 1598-0316

IS - 1

ER -