[reaction: see text] Imidazolide 1 has been prepared from 7-diethylaminocoumarin-3-carboxylic acid (2) and 1,1'-carbonyldiimidazole. This novel fluorescent derivatization reagent can be used in CD exciton chirality method for microscale structural determinations of hydroxyl-containing compounds. It features a red-shifted chromophore and offers the advantages of fluorescence and high sensitivity.

Abstract— A 3‐m‐long rugged flexible display having a novel single‐plastic‐substrate structure has been demonstrated with a coated cholesteric liquid‐crystal mixture. The display is designed to be fabricated by a roll‐to‐roll process to increase productivity at a competitive cost. It has the advantage of having almost no limitation in display length. The high‐resolution (300‐dpi) monochrome cholesteric liquid‐crystal display (ChLCD) can be achieved by using a photo‐addressing method. A single‐layered 10.4‐in. color ChLCD also has been developed with good color and contrast.

An 80ppi ¼ VGA full color, single layer, Reflex™ display with red, green and blue reflecting sub‐pixels is reported. A phototunable chiral dopant is UV exposed to produce these colors, and polymer walls keep the colors separate after tuning. We will present details of this development and discuss applications.

A 10 inch full color cholesteric liquid crystal display (ChLCD) with high reflectivity and high resolution is demonstrated. This display consists only one ChLC panel which is fabricated by the development of the pixelized vacuum filling (PVF) technique. The reflectivity of our ChLCD was improved to about 26% with 4-bit color, its contrast ration is over 6 and the resolution is 100 ppi.

This study developed an ink-jet printing method capable of producing multi-domain alignment liquid crystal displays. Based on the drop-on-demand characteristics of ink jet printing, the ink's location in different alignment manners could be defined in one pixel. This paper describes two practical applications. The first involves integrating the hybrid aligned zone with the homeotropic aligned area in one pixel to create a multi-domain alignment when the voltage is applied. This proposed method achieved a wide viewing angle. The second, similar approach using ink jet printing was performed on a single-cell-gap transflective liquid crystal display. A 2.4-in 170-ppi prototype demonstrates mass-production feasibility.