A novel field‐sequential blue‐phase‐mode AMLCD

Hirakata, Yoichi; Kubota, Daisuke; Yamashita, Akio; Ishitani, Tetsuji; Nishi, Takeshi; Miyairi, Hiroo; Koyama, Jun; Yamazaki, Shunpei; Cho, Takayuki; Sakakura, Masaaki

doi:10.1889/jsid20.1.38

Cited by 20 publications

(11 citation statements)

References 20 publications

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“…Since the BPLC is best known for its sub-millisecond response [16], our device is eligible for a field sequential color (FSC) scheme [17,18], in which each color of QD backlight is turned on in sequence. For this reason, color washout faced by the conventional IMOD displays is no longer an issue for this device, as the color of QD backlight is so saturated, normally with a full width at half maximum (FWHM) between 20-40 nm [19].…”

Section: Color Modulationmentioning

confidence: 99%

Transmissive Interferometric Display With Single-Layer Fabry–Pérot Filter

Chen

et al. 2015

J. Display Technol.

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We present a transmissive-type interferometric display featuring a single layer of Fabry-Pé rot filter using blue phase liquid crystal (BPLC) in tandem with a quantum-dot backlight. With this design, no polarizers and color filters are needed. The intensity modulation is implemented by electrically controlling BPLC's Kerr effect, while the color modulation employs a sequential color scheme. Based on numerical simulations, device performance has been studied in depth. Index Terms-interferometric display, Fabry-Pé rot filter, blue phase liquid crystal, quantum dot.I.

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Section: Color Modulationmentioning

confidence: 99%

Transmissive Interferometric Display With Single-Layer Fabry–Pérot Filter

Chen

et al. 2015

J. Display Technol.

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“…In 2013, BPLC display is demonstrated by using groove cell. [11] So far, contrast ratio (CR) of BPLC display has poor CR (<1000) due to severe light leakage [12,13]. Previously, we found BPLC revealed polarization rotatory and lead to serious light leakage [14].…”

Section: Introductionmentioning

confidence: 99%

Non-Ideal Optical Isotropy of Blue Phase Liquid Crystal and their Self-Assembly on Electrode Surface

Lan

Huang

Tsai

et al. 2015

Molecular Crystals and Liquid Crystals

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“…On the other hand, fast response time is particularly appealing as it not only reduces motion image blurs 11 but also enables color-sequential display using RGB LED backlight with negligible color breakup. 12,13 By eliminating spatial color filters, both optical efficiency and resolution density are tripled. High optical efficiency helps to reduce power consumption while high resolution density is particularly desirable for the future Ultra High Definition Television.…”

Section: Introductionmentioning

confidence: 99%

Stabilizing blue phase liquid crystals with linearly polarized UV light

Yuan

Schadt³

et al. 2015

SPIE Proceedings

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Polymer-stabilized blue-phase liquid crystal (PS-BPLC) has become an increasingly important technology trend for information display and photonic applications. BPLC exhibits several attractive features, such as reasonably wide temperature range, submillisecond gray-to-gray response time, no need for alignment layer, optically isotropic voltageoff state, and large cell gap tolerance when an in-plane switching (IPS) cell is employed. However, some bottlenecks such as high operation voltage, relatively low transmittance, and noticeable hysteresis and prolonged response time at high field region for IPS mode, still remain to be overcome before widespread application of BPLC can be realized. To reduce operation voltage, both new BPLC materials and new device structures have been investigated. In this paper, we demonstrate the stabilization a photopolymer-embedded blue phase liquid crystal precursor using a linearly polarized UV light for first time. When the UV polarization axis is perpendicular to the stripe electrodes of an IPS cell, anisotropic polymer networks are formed through the linear photo-polymerization process and the electrostriction effect is suppressed. As a result, the measured hysteresis is dramatically reduced from 6.95% to 0.36% and the response time shortened by ~2X compared to unpolarized UV exposure. To induce larger anisotropy in polymer networks for mitigating the electrostriction effect, high-intensity linearly polarized UV exposure is preferred. It is foreseeable this method will guide future BPLC device and material development as well as manufacturing process. The dawn of BPLCD is near.

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A novel field‐sequential blue‐phase‐mode AMLCD

Cited by 20 publications

References 20 publications

Transmissive Interferometric Display With Single-Layer Fabry–Pérot Filter

Transmissive Interferometric Display With Single-Layer Fabry–Pérot Filter

Non-Ideal Optical Isotropy of Blue Phase Liquid Crystal and their Self-Assembly on Electrode Surface

Stabilizing blue phase liquid crystals with linearly polarized UV light

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