Lee J.-H.,Pusan National University |
Lee B.-Y.,NDIS Corporation
Applied Physics Letters | Year: 2011
The bistable memory of a cholesteric liquid crystal often disappears owing to the unstable orientation of the focal conic state. We demonstrated the stabilization of the memory by controlling the boundary symmetry of a mono-layered cholesteric liquid crystal capsules which were fabricated with a membrane filter. It was found that the focal conic memory state with a random orientation of the helical axes became more stable in the capsules with higher boundary symmetry. With the same principle, the planar memory state with a lower symmetric orientation of the helical axes became more stable in the capsules with lower symmetry. © 2011 American Institute of Physics.
Lee B.-Y.,NDIS Corporation |
Lee J.-H.,Pusan National University
Current Applied Physics | Year: 2011
We report a method for fabricating a cholesteric liquid crystal capsule display wherein the red, green, and blue capsules are separated in the subpixels with a width of 200 μm. The mixture of a photo-isomerizable chiral dopant and a nematic liquid crystal was encapsulated by an emulsification technique, and then directly printed onto a plastic substrate. A UV light with different amount of energy was exposed through a shadow photomask, and consequently, the red, green, and blue colors were separately induced in each subpixels zone. © 2011 Elsevier B.V. All rights reserved.
NDIS Corporation | Date: 2010-07-02
A system for controlling brightness flicker of a parallax barrier LCD having a wide viewing angle capable of minimizing brightness flicker by adjusting a permittivity curve depending on different times into a predetermined waveform when split barriers are on/off by movement of a viewers viewing angle, and a method thereof. A method of controlling brightness flicker of a parallax barrier LCD having a wide viewing angle for controlling brightness of a display providing a stereoscopic image by acquiring a real-time image of a viewer, recognizing an image of the viewer and extracting locations and coordinates of eyes of the viewer, and controlling turn-on/off of split barrier electrodes.
NDIS Corporation | Date: 2011-02-14
Disclosed is a liquid crystal mixture that includes an isotropic mixture of liquid crystal molecules and a photo-polymerizable monomer. In addition, disclosed are a liquid crystal display (LCD) including a first display panel and a second display panel facing each other, and a liquid crystal layer disposed between the first display panel and the second display panel and including a plurality of liquid crystal regions and a plurality of polymer structures positioned among the plurality of liquid crystal regions, and a method of manufacturing the liquid crystal display (LCD). The liquid crystal layer is formed of a liquid crystal mixture in which liquid crystal molecules and a photo-polymerizable monomer exist isotropically.
Ndis Corporation | Date: 2010-11-16
A method for manufacturing a liquid crystal display device including first, second, and third pixels for displaying different colors comprises the steps of: forming a first electrode on a substrate; forming a liquid crystal layer including a cholesteric liquid crystal as a mixed material of a non-polymeric liquid crystal compound and a photosensitive chiral additive; irradiating a different intensity of light on the liquid crystal layer positioned on the first pixel, the liquid crystal layer positioned on the second pixel, and the liquid crystal layer positioned on the third pixel; and forming a second electrode facing the first electrode.