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Optical Engineering

Precise prediction of optical responses of liquid-crystal display products using a behavioral model of liquid crystal
Author(s): Chansoo Park; Youngmin Cho; Jong-Man Kim; Jongbin Kim; Seung-Woo Lee
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Paper Abstract

We propose a precise circuit model to estimate transient optical responses of an active-matrix liquid crystal display (AMLCD). Liquid crystal (LC) molecules in the pixel is behaviorally modeled by using the first-order system that is described by Verilog-A. Capacitance-voltage (C-V) characteristics of a pixel determine the accuracy of the dynamic responses. Measuring C-V characteristics is impossible because pixels are driven by switching transistors in the AMLCD. We propose a method to obtain the C-V data from natural optical responses. Estimated optical responses based on the C-V data extracted by our proposal show more accurate results than those based on C-V data obtained by using transmittance-voltage data. It is demonstrated that our behavioral model enables us to predict very accurate transient responses, which makes it possible to design LCD products with lower costs.

Paper Details

Date Published: 6 February 2012
PDF: 7 pages
Opt. Eng. 51(1) 014002 doi: 10.1117/1.OE.51.1.014002
Published in: Optical Engineering Volume 51, Issue 1
Show Author Affiliations
Chansoo Park, Kyung Hee Univ. (Korea, Republic of)
Youngmin Cho, Kyung Hee Univ. (Korea, Republic of)
Jong-Man Kim, Kyung Hee Univ. (Korea, Republic of)
Jongbin Kim, Kyung Hee Univ. (Korea, Republic of)
Seung-Woo Lee, Kyung Hee Univ. (Korea, Republic of)

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