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This work develops a new technology to fabricate polymer-dispersed microencapsulated liquid crystal (PDMLC) devices using screen-printing, which is a low temperature procedure (about 90 degrees C) for application on a soft plastic substrate. This research demonstrates numerically and in Mandarin, a 4.5-in multicolor PDMLC (MPDMLC) device with high color contrast, low electric consumption and flexible bending mechanical property. The current work coats three different color pastes (red, blue and black) on a single substrate. Their turn-on voltages are all as low as 5 V and saturation voltages are 20, 30, and 30 V for red, blue, and black colors, respectively

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The substituent effect on the proton hyperfine splitting constants (hfsc) of the charge-transfer complexes of Grignard reagents (RMgBr, R = CH,, C,H,, CH,CH=CH) with seven 3-substituted 9,10-phenanthroquinoaes is reported. A backdonation bonding interaction between phenanthrenesemiquinonate anion radical A* and tbe magnesium p orbital is revealed by the hfsc analysis.