We demonstrated a submillisecond response time and low-voltage variable optical attenuator (VOA) using dual-frequency liquid crystal. The dynamic range of the VOA reaches 43 dB at 1.55 µm wavelength. A normally on with flat wavelength is obtained phase compensation cell. Fast rise decay times are achieved low-frequency overdrive high-frequency undershoot voltages. Other approaches to further improve VOA's performances discussed.

Dual-frequency addressed hybrid-aligned nematic (HAN) liquid crystal cell is demonstrated as a variable optical attenuator at 1.55μm wavelength. By controlling the low- and high-frequency electric field, dual-frequency (DFLC) molecules can be reoriented parallel or perpendicular to substrates so that maximum obtainable phase modulation doubled. In comparison homogeneous cell, DFLC HAN shows lower operating voltage faster response time. Furthermore, exhibits three stable states have some...

An electrically tunable wettability in a liquid crystal/ polymer composite film is demonstrated, which crystal molecules are anchored among grains. The of the films originates from reorientation liquid-crystal molecules, switched by an in-plane electric field with squared pulses voltages. These crystal/polymer have potential applications polarizer-free displays, ink-jet printing, microfluidic devices, and lab-on-a-chip.

We present a non‐dizzy high resolution HDR VR display technology, which can effectively improve the issue of current products, such as screen door effect, motion blur, and visual fatigue problem with dynamic range image. This product achieves prefect image performance highly improves comfort usage.

Dynamic response of a dual-frequency liquid crystal (DFLC) based near infrared phase modulator is investigated through numerical simulations and experiments. The relationships between the optical times various voltage driving conditions are studied. An retarder operating at 1.55 μm wavelength demonstrated by using our homemade high figure-of-merit DFLC mixture. To improve time, both dual- frequency addressing overdrive methods employed. obtained rising decay reduced to less than 0.5 ms for...

We demonstrate a mini‐LED backlit 2117‐ppi LCD for virtual reality displays, which greatly enhances the dynamic range and mitigates screen door effect. The major challenges potential solutions achieving over 2000‐ppi LCDs advantages of using backlight low power will be discussed.

An improved light field VR display is introduced, featuring an ultra-high-pixel density liquid crystal with a resolution of 3.1 in. and 1411 PPI. By utilizing 3K3K panel, this optimized enhances the view provides more immersive experience. Furthermore, it incorporates advanced functions, such as vision correction (without need for glasses), reduced vergence-accommodation conflict, enlarged eye box tracking technology.

This work presents a breakthrough in the development of high-resolution virtual reality (VR) displays 2117-pixels per inch (PPI) liquid crystal (LCDs). technology significantly improves dynamic range and reduces screen door effect VR displays. The challenges potential solutions for achieving over 2000-PPI LCDs, including design aperture ratio pixels, improvements LC efficiency, overall transmittance, are discussed. Moreover, use mini-light-emitting diode backlight low-power to maintain image...

Abstract Augmented reality (AR) provided extra information to the user by applying virtual image onto real environment. There are many methods achieving AR. Holographic display is one of potential ways due its perfect 3D demonstration. can provide object with depth information. It be realized an AR device scene combing holographic display. However, it difficult realize a compact wide viewing angle and enough resolution. limits apply In this paper, we will discuss requirements based on...

An optimized Light Field (LF) VR display with ultra‐high pixel density LCD (3.1 inch 1411 PPI) is presented. of view (FOV) and the experience immersion are improved by adopting 3%3% resolution panel. Functions vision correction (glasses free), reduced Vergence‐Accommodation‐Conflict (VAC) enlarged eye box tracking also realized.

We propose and demonstrate a liquid-crystal (LC)-based Fourier optical spectrum analyzer (FOSA). The FOSA consists of birefringent filter array with an embedded LC phase modulator. modulator is used to control the difference between two orthogonally polarized beams avoid mechanical movement in conventional transform spectrometers. detailed operation principle this described. A single-LC-based 6-stage experimentally demonstrated, results obtained using such show good agreement measured...

This article presents an AR HUD using micro LED technology for enhanced brightness and image quality. It utilizes LED's high to merge images seamlessly with external views employs Nature 3D improve the HUD's depth, significantly boosting vehicle safety.

We propose an innovative reflective displayable technology named Liqxtal TM Graph, designed to present digital content on the exterior while ensuring a clear see‐through vision for wearer. Employing TFT liquid crystal display (TFT‐LCD) architecture, this locally manipulates polarization state and reflectance of incident light through interfaces. By seamlessly integrating with wireless control systems mobile app platforms, enables glasses convey information between users. Applications...

Since 1979, liquid crystal lenses have been a target of perfect parabolic lenses. However, the constraints so-called power law coming from physics and chemistry nematic LC limit development in large-aperture GRIN In this study we present electrically tunable progressive utilizing crystals (LC). The proposed lens is capable dynamically adjusting its focal length, functioning as either positive or negative lens. Our findings reveal that spatial distribution within lens, ranging +4D to -3D, far...

Abstract UV stable, high birefringence and low viscosity nematic liquid crystal mixtures were developed their properties evaluated. Our new exhibit similar but ∼3.5X lower visco‐elastic coefficient than Merck E44. In the mean time, our show better stability those cyano‐biphenyls based commercial mixtures. To make a performance of material more visible relatively mixture was for this experiment in conjunction with voltage overdrive undershoot technique. We demonstrated light switch response...

A high speed phase modulator based on ferroelectric liquid crystal (FLC) is demonstrated. For uniform alignment and pure modulation, we propose a new FLC device using short helical pitch material in homeotropic alignment. This driven by periodic in-plane electrode stripes implemented the surface of both cell substrates. As result, have obtained large modulation (about 2.3π at λ = 1.55 μm under E 2.5 V/μm) fast response time (<200 μsec). Together with performance characterization our device,...

Polymer-dispersed liquid crystal confined in a thin 90/spl deg/ twisted cell (T-PDLC) exhibits an enhanced contrast ratio due to the surface anchoring effect. A black and white polarizer-free reflective display using dye-doped T-PDLC is demonstrated.

A polarization-independent liquid crystal phase modulator with a large shift and low operating voltage is demonstrated. Two orthogonal layers are separated by two anisotropic polymer films which exhibit excellent molecular alignment capability.

This article presents the use of spliced LCD displays on foldable mobile devices. In order to achieve a perfect display, we need four‐sided narrow border design and visual seamless technology. The introduces two new techniques for ultra borders uses these overcome rainbow pattern textual continuity seam edges between adjacent displays.

We invented a new two-domain TN/LCD with excellent viewing performance identical, symmetrical 160 degree(s) (+/- 80 degree(s)) cone in all four major zones. The display also showed color tracking and no gray scale reversal. Each sub-pixel is twisted nematic (TN) based the LC alignments oriented horizontal vertical directions. This different from conventional where are two diagonal In this special TN/LCD, sub-pixels show complementary asymmetrical Thus combined effects identical optical...