Precise prediction of optical responses of liquid-crystal display products using a behavioral model of liquid crystal

Chansoo Park; Youngmin Cho; Jong-Man Kim; Jongbin Kim; Seung-Woo Lee

doi:10.1117/1.OE.51.1.014002

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6 February 2012 Precise prediction of optical responses of liquid-crystal display products using a behavioral model of liquid crystal

Chansoo Park, Youngmin Cho, Jong-Man Kim, Jongbin Kim, Seung-Woo Lee

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Optical Engineering, 51(1), 014002 (2012). https://doi.org/10.1117/1.OE.51.1.014002

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.

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Chansoo Park, Youngmin Cho, Jong-Man Kim, Jongbin Kim, and Seung-Woo Lee "Precise prediction of optical responses of liquid-crystal display products using a behavioral model of liquid crystal," Optical Engineering 51(1), 014002 (6 February 2012). https://doi.org/10.1117/1.OE.51.1.014002

Published: 6 February 2012

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