Identifying defects in bistable smectic-A liquid crystal displays after extended period of functional testing

Matiss Maltisovs; Dmitrijs Pikulins; Kristians Krumins; Ainars Ozols

doi:10.1109/RTUCON51174.2020.9316559

Identifying defects in bistable smectic-A liquid crystal displays after extended period of functional testing

Matiss Maltisovs^*
, Dmitrijs Pikulins
, Kristians Krumins
, Ainars Ozols

^*Corresponding author for this work

Riga Technical University
EuroLCDs

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › Research › peer-review

1 Citation (Scopus)

Abstract

Nowadays Liquid Crystal Display (LCD) is an integral part of humans' everyday life. They are used in everything starting from cell phones and televisions to washing machines. Liquid Crystals (LC) have far wider applications, one of them-smart or switchable glass, glass with voltage dependent optical properties which can be altered if specific electrical signals are applied to the glass. Bistable smectic-A (SmA) LCD is one of the most promising devices for smart glass applications due to long term bistability, low haze at clear state, low transmittance at scatter state and low power consumption. Every product that has been developed needs to be tested to verify and validate the design and development processes. To make sure the product is safe for customer, complies with necessary product, product group and manufacturing standards, performs the function it is required to perform. In this paper bistable smectic-A liquid crystal display extended functional testing methodology is presented. As well as the most common defects that appeared during and after the testing are reviewed and analyzed.

Original language	English
Title of host publication	2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728195100
DOIs	https://doi.org/10.1109/RTUCON51174.2020.9316559
Publication status	Published - 5 Nov 2020
Externally published	Yes
Event	61st Annual IEEE International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Riga, Latvia Duration: 5 Nov 2020 → 7 Nov 2020

Publication series

Name	2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings

Conference

Conference	61st Annual IEEE International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020
Country/Territory	Latvia
City	Riga
Period	5/11/20 → 7/11/20

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Keywords

bistable
defects
functional testing
liquid crystal display
Smectic-A

Access to Document

10.1109/RTUCON51174.2020.9316559

Cite this

Maltisovs, M., Pikulins, D., Krumins, K., & Ozols, A. (2020). Identifying defects in bistable smectic-A liquid crystal displays after extended period of functional testing. In 2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings Article 9316559 (2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/RTUCON51174.2020.9316559

Maltisovs, Matiss ; Pikulins, Dmitrijs ; Krumins, Kristians et al. / Identifying defects in bistable smectic-A liquid crystal displays after extended period of functional testing. 2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2020. (2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings).

@inproceedings{2c38f0412ac94c02990cec95290dadcf,

title = "Identifying defects in bistable smectic-A liquid crystal displays after extended period of functional testing",

abstract = "Nowadays Liquid Crystal Display (LCD) is an integral part of humans' everyday life. They are used in everything starting from cell phones and televisions to washing machines. Liquid Crystals (LC) have far wider applications, one of them-smart or switchable glass, glass with voltage dependent optical properties which can be altered if specific electrical signals are applied to the glass. Bistable smectic-A (SmA) LCD is one of the most promising devices for smart glass applications due to long term bistability, low haze at clear state, low transmittance at scatter state and low power consumption. Every product that has been developed needs to be tested to verify and validate the design and development processes. To make sure the product is safe for customer, complies with necessary product, product group and manufacturing standards, performs the function it is required to perform. In this paper bistable smectic-A liquid crystal display extended functional testing methodology is presented. As well as the most common defects that appeared during and after the testing are reviewed and analyzed.",

keywords = "bistable, defects, functional testing, liquid crystal display, Smectic-A",

author = "Matiss Maltisovs and Dmitrijs Pikulins and Kristians Krumins and Ainars Ozols",

note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 61st Annual IEEE International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 ; Conference date: 05-11-2020 Through 07-11-2020",

year = "2020",

month = nov,

day = "5",

doi = "10.1109/RTUCON51174.2020.9316559",

language = "English",

series = "2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings",

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address = "United States",

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Maltisovs, M, Pikulins, D, Krumins, K & Ozols, A 2020, Identifying defects in bistable smectic-A liquid crystal displays after extended period of functional testing. in 2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings., 9316559, 2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings, Institute of Electrical and Electronics Engineers Inc., 61st Annual IEEE International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020, Riga, Latvia, 5/11/20. https://doi.org/10.1109/RTUCON51174.2020.9316559

Identifying defects in bistable smectic-A liquid crystal displays after extended period of functional testing. / Maltisovs, Matiss; Pikulins, Dmitrijs; Krumins, Kristians et al.
2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2020. 9316559 (2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › Research › peer-review

TY - GEN

T1 - Identifying defects in bistable smectic-A liquid crystal displays after extended period of functional testing

AU - Maltisovs, Matiss

AU - Pikulins, Dmitrijs

AU - Krumins, Kristians

AU - Ozols, Ainars

PY - 2020/11/5

Y1 - 2020/11/5

N2 - Nowadays Liquid Crystal Display (LCD) is an integral part of humans' everyday life. They are used in everything starting from cell phones and televisions to washing machines. Liquid Crystals (LC) have far wider applications, one of them-smart or switchable glass, glass with voltage dependent optical properties which can be altered if specific electrical signals are applied to the glass. Bistable smectic-A (SmA) LCD is one of the most promising devices for smart glass applications due to long term bistability, low haze at clear state, low transmittance at scatter state and low power consumption. Every product that has been developed needs to be tested to verify and validate the design and development processes. To make sure the product is safe for customer, complies with necessary product, product group and manufacturing standards, performs the function it is required to perform. In this paper bistable smectic-A liquid crystal display extended functional testing methodology is presented. As well as the most common defects that appeared during and after the testing are reviewed and analyzed.

AB - Nowadays Liquid Crystal Display (LCD) is an integral part of humans' everyday life. They are used in everything starting from cell phones and televisions to washing machines. Liquid Crystals (LC) have far wider applications, one of them-smart or switchable glass, glass with voltage dependent optical properties which can be altered if specific electrical signals are applied to the glass. Bistable smectic-A (SmA) LCD is one of the most promising devices for smart glass applications due to long term bistability, low haze at clear state, low transmittance at scatter state and low power consumption. Every product that has been developed needs to be tested to verify and validate the design and development processes. To make sure the product is safe for customer, complies with necessary product, product group and manufacturing standards, performs the function it is required to perform. In this paper bistable smectic-A liquid crystal display extended functional testing methodology is presented. As well as the most common defects that appeared during and after the testing are reviewed and analyzed.

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KW - defects

KW - functional testing

KW - liquid crystal display

KW - Smectic-A

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DO - 10.1109/RTUCON51174.2020.9316559

M3 - Conference paper

AN - SCOPUS:85100015543

T3 - 2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings

BT - 2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 61st Annual IEEE International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020

Y2 - 5 November 2020 through 7 November 2020

ER -

Maltisovs M, Pikulins D, Krumins K, Ozols A. Identifying defects in bistable smectic-A liquid crystal displays after extended period of functional testing. In 2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2020. 9316559. (2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 - Proceedings). doi: 10.1109/RTUCON51174.2020.9316559

Identifying defects in bistable smectic-A liquid crystal displays after extended period of functional testing

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

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