Liquid crystal displays with temperature-independent characteristics

Jong-Man Kim; Jongbin Kim; Youngmin Cho; Minkoo Kim; Seung-Woo Lee

doi:10.1117/1.OE.51.7.077402

Abstract

A new technology is presented that enables liquid crystal displays (LCDs) to have temperature-independent characteristics. This work shows how severely the color image quality of LCDs is affected by the ambient temperature change in addition to showing how the ambient temperature considerably affects the motion image quality of overdriven LCDs. Transmittance-voltage curve-shifting technology is proposed to compensate for the color change owing to temperature change. This new technology reduces a half-maximum luminance error from 24% to 6% over the temperature range from 0°C to 50°C. The linear overdrive (OD) technology over the wide temperature is presented to overcome the temperature-dependent characteristics of LCDs. With this technique, the distribution of the OD error is reduced by 65%. The color and motion image quality of LCDs can be kept the same with these techniques, regardless of temperature.

Citation Download Citation

Jong-Man Kim, Jong-Man Kim, Jongbin Kim, Jongbin Kim, Youngmin Cho, Youngmin Cho, Minkoo Kim, Minkoo Kim, Seung-Woo Lee, Seung-Woo Lee, } "Liquid crystal displays with temperature-independent characteristics," Optical Engineering 51(7), 077402 (5 July 2012). https://doi.org/10.1117/1.OE.51.7.077402 . Submission:

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