Thermally adaptive response‐time compensation for LCDs

Lee, Ki‐Chan; Moon, Seong-Yong; Kim, Namdeog; Berkeley, Brian H.; Kim, Sang Soo

doi:10.1889/1.2896319

Cited by 3 publications

(2 citation statements)

References 3 publications

(4 reference statements)

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“…It is reported that the overdrive values are highly dependent on the temperature. 15,16 Accurate prediction of responses enables engineers to obtain overdrive values for all transitions. We have been able to accurately predict the responses regardless of temperature.…”

Section: Resultsmentioning

confidence: 99%

Temperature-dependent behavioral model of pixels in active-matrix liquid crystal displays with fringe-field switching mode

Kim

Lee

2015

Opt. Eng

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Abstract. This paper proposes a temperature-dependent behavioral circuit model to predict the optical characteristics of an active-matrix liquid crystal display with a fringe-field switching (FFS) mode. The optical responses of liquid crystal displays (LCDs) are strongly affected by their ambient temperature. We optimized the time-constant parameters that describe the movement of liquid crystal molecules so that simulated optical responses of FFS LCD provide the best fit to the measured responses over the temperature range of 0 to 50°C. It is found that these time-constant parameters have a linear relationship with the ambient temperature, which enables the prediction of optical responses at any given temperature. The simulation results of the transient responses show an excellent match with the measured results regardless of the ambient temperature. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Resultsmentioning

confidence: 99%

Temperature-dependent behavioral model of pixels in active-matrix liquid crystal displays with fringe-field switching mode

Kim

Lee

2015

Opt. Eng

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“…Cell-E Test enables collecting key parameters of LC models, showing that design models can be verified with actual parameters of cell panels by using Cell-E Test. Parameters of LCD models vary with respect to temperature [15][16][17]. Cell-E Test can be also used for evaluating temperature dependency of LC by measuring under multiple temperature conditions.…”

Section: Resultsmentioning

confidence: 99%

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

Miyake¹,

Ota²,

Nishimura

2014

Journal of Information Display

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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.

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Temperature sensor without reference resistor by indium tin oxide and molybdenum

Jeon¹,

Bae²

2010

Journal of Sensor Science and Technology

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Thermally adaptive response‐time compensation for LCDs

Cited by 3 publications

References 3 publications

Temperature-dependent behavioral model of pixels in active-matrix liquid crystal displays with fringe-field switching mode

Temperature-dependent behavioral model of pixels in active-matrix liquid crystal displays with fringe-field switching mode

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

Temperature sensor without reference resistor by indium tin oxide and molybdenum

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