Modelling of binary phase modulation in surface stabilized ferroelectric liquid crystal spatial light modulators

Lee, Yongmin; Gourlay, J.; Hossack, W.J.; Underwood, Ian; Walton, A.J.

doi:10.1016/j.mejo.2003.09.006

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…However, for current active matrix LCD, thin‐film transistor (TFT) array for nematic LC with a 1T1C circuit could not support the PWM driving. In 2015, we adopted the PWM method for ESHFLC on silicon for projection applications . However, because the mobility of Complementary Metal Oxide Semiconductor (CMOS) is several orders higher than amorphous or poly silicon, TFT on glass cannot provide sufficient high frame rate.…”

Section: Pixel Circuit Design For Active Matrixmentioning

confidence: 99%

Active matrix field sequential color electrically suppressed helix ferroelectric liquid crystal for high resolution displays

et al. 2018

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In this article, we disclose a 3-inch 250ppi active matrix field sequential color electrically suppressed ferroelectric liquid crystal (ESHFLC) display. ESHFLC's ultra-fast response time (~10µs at 6.67V/µm) enables the display resolution to be tripled via field sequential color technique. Photo-alignment technology provides ESHFLC with optimal anchoring energy which contributes to a high contrast ratio over 10K:1. Specific 3T1C pixel circuit is designed to convert the analog signal to pulse width modulation. Thus the field sequential color ESHFLC display is achieved on LTPS TFT panel. With the delivered prototype, we successfully demonstrate the active matrix FSC ESHFLC integrated display system. We believe this display may replace IPS or FFS in the near future for portable mobile market. Moreover, high resolution FSCESHFLC can find more applications in emerging virtual reality displays.

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Section: Pixel Circuit Design For Active Matrixmentioning

confidence: 99%

Active matrix field sequential color electrically suppressed helix ferroelectric liquid crystal for high resolution displays

et al. 2018

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“…Equivalent circuit models have been proposed for diversiform photoelectric devices. And for its backgrounds in implementing in FLCs, Moore and Travis originally developed a PSpice model for a FLC cell, 17) and then it is investigated further in -V min addressing model, 18) binary phase modulation, 19) the optically addressed spatial light modulator 20) and complementary metal-oxide-semiconductor (CMOS) backplane. 21) However, these models are not suitable for describing Vshaped switching characteristics since the dynamic impedances of FLC cells are canceled and the surface anchoring energy, which also plays an important role in V-shaped switching, is simply approximated.…”

Section: Introductionmentioning

confidence: 99%

Improved Equivalent Circuit Model for V-Shaped, Thresholdless Switching Ferroelectric Liquid Crystals

Wang

Pan

Luo

et al. 2008

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For V-shaped, thresholdless switching ferroelectric liquid crystals (FLCs), the impedance divider induced by the multilayer structure of FLC cells and the drive circuit play an important role in switching characteristics. In this paper, an equivalent circuit model that can be applied to conventional circuit simulators is proposed for the optical response prediction and drive circuit optimization of V-shaped FLCs. The model is improved from the original model of Moore and Travis; however, the impedance divider is taken into account, and both polar and nonpolar surface anchoring energies are considered to make the model more preferable. The model is then utilized to investigate thresholdless switching characteristics. Simulation results show that the hysteresis inversion frequency fi increases more than one thousand fold with the drive circuit and then decreases with REXT following the relation log fi = -alog REXT + b, and a (b) increases from 0.43 to 0.46 (2.46 to 2.66) as the amplitude of triangular voltage increases from 4 to 10 V, agreeing with experimental results. Also, the same optical transmissions are plotted as different coordinates, as a function of voltage dropping on liquid crystal layer and of drive voltage, and the results show that genuine V-shaped switching is only observed when the transmission is plotted as a function of drive voltage, coinciding with the model suggested by Blinov et al.

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τ− V _min addressing mode and an improved equivalent circuit model for ferroelectric liquid crystal displays

et al. 2007

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Modelling of binary phase modulation in surface stabilized ferroelectric liquid crystal spatial light modulators

Cited by 4 publications

References 11 publications

Active matrix field sequential color electrically suppressed helix ferroelectric liquid crystal for high resolution displays

Active matrix field sequential color electrically suppressed helix ferroelectric liquid crystal for high resolution displays

Improved Equivalent Circuit Model for V-Shaped, Thresholdless Switching Ferroelectric Liquid Crystals

τ− V _min addressing mode and an improved equivalent circuit model for ferroelectric liquid crystal displays

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Modelling of binary phase modulation in surface stabilized ferroelectric liquid crystal spatial light modulators

Cited by 4 publications

References 11 publications

Active matrix field sequential color electrically suppressed helix ferroelectric liquid crystal for high resolution displays

Active matrix field sequential color electrically suppressed helix ferroelectric liquid crystal for high resolution displays

Improved Equivalent Circuit Model for V-Shaped, Thresholdless Switching Ferroelectric Liquid Crystals

τ− V min addressing mode and an improved equivalent circuit model for ferroelectric liquid crystal displays

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Product

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τ− V _min addressing mode and an improved equivalent circuit model for ferroelectric liquid crystal displays