Inline Quality Control of Liquid Crystal Cells

Sergiy Valyukh; Sergei Sorokin; Vladimir G. Chigrinov

doi:10.1109/JDT.2015.2434939

Inline Quality Control of Liquid Crystal Cells

Sergiy Valyukh
, Sergei Sorokin
, Vladimir G. Chigrinov

Department of Electronic and Computer Engineering

Research output: Contribution to journal › Journal Article › peer-review

4 Citations (Scopus)

Abstract

Inline quality control of liquid crystal (LC) cells is usually associated with a real-Time noncontact characterization of moved LC cells. Such a characterization enables inspection of the products quality and helps to find in time defects. In the paper, we analyze an approach for fast evaluation of LC cell gap uniformity. The approach is based on detecting interference patterns formed by the quasi-monochromatic light reflected from a tested LC cell. To speed up the data treatment, a simple analytic expression describing the intensity of light interacting with the multilayered structure of an LC cell is derived. The results of the simplified model are compared with rigorous simulations. Two experimental setups are discussed. A CCD camera is used for detecting the interference patterns.

Original language	English
Article number	7109826
Pages (from-to)	1042-1047
Number of pages	6
Journal	IEEE/OSA Journal of Display Technology
Volume	11
Issue number	12
DOIs	https://doi.org/10.1109/JDT.2015.2434939
Publication status	Published - 1 Dec 2015

Bibliographical note

Publisher Copyright:
© 2005-2012 IEEE.

Keywords

Liquid crystal (LC) cell gap
quality control
real-Time measurements

Access to Document

10.1109/JDT.2015.2434939

Cite this

@article{60f34418ef3641e787c489dd5e001c4e,

title = "Inline Quality Control of Liquid Crystal Cells",

abstract = "Inline quality control of liquid crystal (LC) cells is usually associated with a real-Time noncontact characterization of moved LC cells. Such a characterization enables inspection of the products quality and helps to find in time defects. In the paper, we analyze an approach for fast evaluation of LC cell gap uniformity. The approach is based on detecting interference patterns formed by the quasi-monochromatic light reflected from a tested LC cell. To speed up the data treatment, a simple analytic expression describing the intensity of light interacting with the multilayered structure of an LC cell is derived. The results of the simplified model are compared with rigorous simulations. Two experimental setups are discussed. A CCD camera is used for detecting the interference patterns.",

keywords = "Liquid crystal (LC) cell gap, quality control, real-Time measurements",

author = "Sergiy Valyukh and Sergei Sorokin and Chigrinov, \{Vladimir G.\}",

note = "Publisher Copyright: {\textcopyright} 2005-2012 IEEE.",

year = "2015",

month = dec,

day = "1",

doi = "10.1109/JDT.2015.2434939",

language = "English",

volume = "11",

pages = "1042--1047",

journal = "IEEE/OSA Journal of Display Technology",

issn = "1551-319X",

publisher = "IEEE Computer Society",

number = "12",

}

TY - JOUR

T1 - Inline Quality Control of Liquid Crystal Cells

AU - Valyukh, Sergiy

AU - Sorokin, Sergei

AU - Chigrinov, Vladimir G.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - Inline quality control of liquid crystal (LC) cells is usually associated with a real-Time noncontact characterization of moved LC cells. Such a characterization enables inspection of the products quality and helps to find in time defects. In the paper, we analyze an approach for fast evaluation of LC cell gap uniformity. The approach is based on detecting interference patterns formed by the quasi-monochromatic light reflected from a tested LC cell. To speed up the data treatment, a simple analytic expression describing the intensity of light interacting with the multilayered structure of an LC cell is derived. The results of the simplified model are compared with rigorous simulations. Two experimental setups are discussed. A CCD camera is used for detecting the interference patterns.

AB - Inline quality control of liquid crystal (LC) cells is usually associated with a real-Time noncontact characterization of moved LC cells. Such a characterization enables inspection of the products quality and helps to find in time defects. In the paper, we analyze an approach for fast evaluation of LC cell gap uniformity. The approach is based on detecting interference patterns formed by the quasi-monochromatic light reflected from a tested LC cell. To speed up the data treatment, a simple analytic expression describing the intensity of light interacting with the multilayered structure of an LC cell is derived. The results of the simplified model are compared with rigorous simulations. Two experimental setups are discussed. A CCD camera is used for detecting the interference patterns.

KW - Liquid crystal (LC) cell gap

KW - quality control

KW - real-Time measurements

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000364858000012

UR - https://openalex.org/W2184808261

U2 - 10.1109/JDT.2015.2434939

DO - 10.1109/JDT.2015.2434939

M3 - Journal Article

SN - 1551-319X

VL - 11

SP - 1042

EP - 1047

JO - IEEE/OSA Journal of Display Technology

JF - IEEE/OSA Journal of Display Technology

IS - 12

M1 - 7109826

ER -

Inline Quality Control of Liquid Crystal Cells

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this