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This study presents the development of ultra‐thin azo‐dye polarizers, notable for their minimal thickness (100‐200 nm) and superior optical performance, with polarization efficiency exceeding 99.9%, extinction ratios above 4000, transmittance over 45.3%, and dichoric ratio over 100. Utilizing cost‐effective solution‐processing methods, we fabricate these high‐performance polarizers and determine optimal experimental conditions for peak efficacy. Our research includes comprehensive Scanning Electron Microscopy analyses to understand the microstructural properties of these azo‐dye thin film polarizers, contributing significantly to the field of advanced display technologies. [ABSTRACT FROM AUTHOR]

This study presents the characterization and performance evaluation of photo‐aligned azo‐dye thin‐film polarizers, highlighting their ultra‐thin profiles and superior optical functionalities. Utilizing cost‐effective solution‐processing methods, these high‐efficiency polarizers were developed, with the research pinpointing optimal experimental conditions for peak performance. [ABSTRACT FROM AUTHOR]

Vertically Aligned LCD is one of the most widely used optical modes in LCD TV and mobile devices. It is also a very important category of passive LC displays used in Automobiles. It has the advantages of perfect dark state and very high contrast ratio for normal viewing. However, single domain VA LCD has the intrinsic issue of dead zone (contrast vanishing zone) in certain viewing direction in the voltage‐on state, which seriously limits its viewing angle performance. Recently, the State Key Laboratory on Advanced Displays and Optoelectronics Technologies of the Hong Kong University of Science and Technology has developed an easy‐to‐apply multi‐domain VA LCD technology that can be readily implemented in LCD factories without major investment and change in current production process. [ABSTRACT FROM AUTHOR]

Smart windows are attractive because of their numerous advantages such as elegance in construction design and energy conservation. Smart windows with variable transmission are especially desirable for obvious reasons. The simplest way to make a variable transmission smart window is to use two patterned polarizers, and control the transmission by changing the relative position of the two polarizers. We have demonstrated a high‐dichroic‐ratio polarizer by photoalignment and proposed a simple one‐step photo‐copy method to realize a continuous axis varying polarizer. The patterned polarizer shows high optical performance, and its thickness is as thin as 100 nm, which is favorable in practical window applications. [ABSTRACT FROM AUTHOR]

In this paper, a TFT based polarization-controllable lightprinter for optically rewritable (ORW) liquid crystal displays (LCDs) is proposed. Experimental results with gray scale images are also presented. The light-printer consists of a vertically aligned nematic (VAN) mono-color TFT LCD as a polarization controlling unit. 420nm LED light source with Fresnel lens forms the projection unit. With this two-dimensional controlling unit, this light-printer can transfer content to a large-area ORW LCD panel easily. [ABSTRACT FROM AUTHOR]