A5054305311- Liquid Crystal Research Advancements
- Optical Coatings and Gratings
- Photonic Crystals and Applications
- Photonic and Optical Devices
- Color Science and Applications
- Organic Light-Emitting Diodes Research
- Advanced optical system design
- Quantum Dots Synthesis And Properties
- Photochromic and Fluorescence Chemistry
- Advanced Optical Imaging Technologies
- Thin-Film Transistor Technologies
- Magnetic Field Sensors Techniques
- Plasma Diagnostics and Applications
- Particle accelerators and beam dynamics
- Organic Electronics and Photovoltaics
- Advanced Fiber Optic Sensors
- Impact of Light on Environment and Health
- Image and Video Quality Assessment
- Luminescence Properties of Advanced Materials
- Optical Wireless Communication Technologies
- Advanced Fiber Laser Technologies
- Advanced Memory and Neural Computing
- Perovskite Materials and Applications
- Advanced Antenna and Metasurface Technologies
- Engineering Applied Research
Jiujiang University
2024
University of Hong Kong
2014-2018
Hong Kong University of Science and Technology
2014-2018
Union Hospital
2012
Jilin University
2012
National Tsing Hua University
1997
Abstract Combining blue micro‐light‐emitting diodes (LEDs) with color conversion layers (CCLs) is a promising approach to develop efficient full‐color displays. However, no such practical display reported so far potentially because of two major challenges, i.e., rarely available materials and severe crosstalk effect among adjacent pixels due the thick sapphire substrates LED chips. Here, micro‐LED prototype by combining rationally designed micro‐LEDs backlight CsPbBr 3 perovskite CdSe QDs as...
In this letter, the hysteresis mechanism of organic thin-film transistors (OTFTs) with polyvinyl alcohol (PVA) as gate dielectric is studied. By examining OTFTs a blocking polymer layer between and PVA or channel PVA, we confirm that origin caused by holes injected from and/or trapped in interface pentacene/PVA bulk. A method proposed to reduce hysteresis. As result, pentacene OTFT free-hysteresis high mobility 1.8 cm2/Vs achieved triple-layer at low-operating voltages.
Photoalignment is a simple technique for the manipulation of molecular orientations, which has been widely used in liquid crystal displays. Here, we propose novel photoalignment method, an azobenzene dye thin film deposited by thermal evaporation and situ exposed to linearly polarized light simultaneously. We obtain polarizers with dichroic ratio up 62, highest value ever realized method. Moreover, polarizing thickness just 200 nm, compatible flexible substrates, making it perfect use as...
Broadband reflective polarizers for liquid crystal displays (LCDs) are designed. The working principle is based on giant form birefringence generated by engineering the materials of subwavelength gratings. optical performances proposed investigated finite difference time domain (FDTD) method. show an ultra-thin profile, high transmission, large extinction ratio and wide acceptable angle, all which highly desirable high-efficiency LCDs. Finally, fabrication tolerance structure discussed in detail.
A dichroic polarizer with a high ratio of up to 60 is achieved by photoalignment induced anisotropic azo dye ordering. The film thickness well controlled in 200 nm, and it 500 times thinner than conventional iodine Polaroid polarizer, which desirable for ultra-thin performance liquid crystal display applications.
A coatable polarizer with high performance is a perpetual goal because of its numerous advantages. Here, we demonstrate photo‐induced dichroic ratio more than 50, contrast 300, and thickness less 500 nm. This offers simple economical technique to realize advanced displays low cost, ultra‐thin profile, flexible style, performance.
This paper introduces an in-line Mach–Zehnder fibre-optic interferometer (IMZI) based on two multimode fibre tapers for high-precision curvature and vibration detection. The IMZI was formed by fusing the structure of taper (MFT)-single-mode (SMF)–MFT. By inducing non-adiabatic tapering in (MMF), cladding modes MMF were excited effectively, which turn stimulate high-order within SMF, substantially enhancing sensitivity sensor. In sensing experiments, sensor demonstrated exceptionally high...
Smart windows are attractive because of their numerous advantages such as elegance in construction design and energy conservation. with variable transmission especially desirable for obvious reasons. The simplest way to make a smart window is use two patterned polarizers, control the by changing relative position polarizers. We have demonstrated high‐dichroic‐ratio polarizer photoalignment proposed simple one‐step photo‐copy method realize continuous axis varying polarizer. shows high...
In this study, cholesteric liquid crystals (CLCs) are integrated with quantum dot color conversion (QDCC) display to increase the light efficiency. The CLC structure is designed selectively reflect blue excitation light, and thus green emission from perovskite dots (QDs) enhanced. An improvement of luminance by 21% achieved.
Ultra‐thin broadband polarizers with high performance are urgently demanded as the prosperous development of ultra‐thin and flexible displays. We have realized high‐dichroic‐ratio AD‐1 by photoalignment technique, its functional band is in blue region. To obtain a polarizer whole visible region, simple additional iodine doping process investigated. also compare final both atmosphere vacuum. Moreover, situ exposure polarized light during process, maximum dichroic ratio improved to 29, which...
Abstract We proposed a novel visible polarizer based on multilayer silicon and oxide alternative subwavelength grating its optical characteristic is numerically investigated by finite difference time domain method. The reflectance of TE mode transmission TM are above 90% with extinction ratio up to 10 3 . Moreover, the also has wide angular field large fabrication tolerance.
We proposed a novel method to fabricate nonspecular reflectors by spray coating system, which are applied enhance brightness near normal view direction when light is obliquely incident. Fabrication parameters optimized, and 70 mm × prototype exhibited.
Summary form only given, as follows. The operation characteristics of an inductively-coupled plasma source have been measured by several different measurement techniques: Langmuir probe, 36 GHz heterodyne interferometer, optical emission spectroscopy and impedance probe. Ar is generated exciting a planar inductive coil with 13.56 MHz RF power which coupled into the 400 mm diameter chamber through quartz window. Measurements made for two size antenna: 150 270 window sizes 200 320 mm,...