| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 349035000 | For driving Grandjean to focal conic or dynamic scattering type liquid crystal | 8 |
| 20090033814 | METHOD AND APPARATUS FOR REDUCING SPECKLE IN COHERENT LIGHT - According to one embodiment, a method for reducing speckle in an image produced from a coherent light source includes directing a beam of coherent light at an electrically controlled diffuser. An electrical signal is applied to the electrically controlled diffuser to produce an electrical field across the electrically controlled diffuser layer. At least one of an amplitude and a frequency of the electrical signal are varied to transition the controlled diffuser between a first state and a second state. The varied application of the electrical signal operates to reduce spatial coherence in an image projected through the electrically controlled diffuser. | 02-05-2009 |
| 20090135320 | DISPLAY - A display device including: a pair of substrates | 05-28-2009 |
| 20090153756 | LIQUID CRYSTAL DISPLAY AND METHOD OF MANUFACTURING SAME - A liquid crystal display is disclosed, including first and second opposing substrates separated by a cell gap. The cell gap has an inner liquid crystal region including a liquid crystal composition, an outer sealant region including a sealant that bonds the first and second opposing substrates together, and a void region between the inner liquid crystal region and the outer sealant region. The sealant may be a pressure sensitive adhesive. Also disclosed is a method of manufacturing the liquid crystal display. A liquid crystal display assembly including at least two light reflecting liquid crystal displays is also disclosed, wherein at least one of the displays comprises the liquid crystal display disclosed herein. | 06-18-2009 |
| 20090153757 | LIQUID CRYSTAL DISPLAY ELEMENT, METHOD OF DRIVING THE ELEMENT, AND ELECTRONIC PAPER HAVING THE ELEMENT - The invention relates to a liquid crystal display element for displaying an image by driving a liquid crystal and provides a liquid crystal display element capable of multi-level display of high display quality using general-purpose drivers, a method of driving the element, and electronic paper having the element. To display gray level “4”, a pulse voltage of ±32 V is applied at a first step to put a cholesteric liquid crystal in a planar state (level “7”)). Then, a pulse voltage of ±24 V is applied for 2.0 ms at a sub-step to the cholesteric liquid crystal to change the gray level to level “5” that is two steps lower. A pulse voltage of ±24 V is applied for 1.0 ms at another sub-step to cause a further transition of the cholesteric liquid crystal toward a focal conic state, thereby obtaining gray level “4” that is one step lower than level “5”. | 06-18-2009 |
| 20090161034 | Drive schemes for driving cholesteric liquid crystal material into the focal conic state - In a cholesteric liquid crystal display device ( | 06-25-2009 |
| 20090316060 | CONDUCTING FILM OR ELECTRODE WITH IMPROVED OPTICAL AND ELECTRICAL PERFORMANCE - A conducting film or device electrode includes a substrate and two transparent or semitransparent conductive layers separated by a transparent or semitransparent intervening layer. The intervening layer includes electrically conductive pathways between the first and second conductive layers to help reduce interfacial reflections occurring between particular layers in devices incorporating the conducting film or electrode. | 12-24-2009 |
| 20130286309 | Variable Focal Length Achromatic Lens System - A variable focal length achromatic lens includes a flat liquid crystal diffractive lens and a pressure-controlled fluidic refractive lens. The diffractive lens is composed of a flat binary Fresnel zone structure and a thin liquid crystal layer, producing high efficiency and millisecond switching times while applying a low ac voltage input. The focusing power of the diffractive lens is adjusted by electrically modifying the sub-zones and re-establishing phase wrapping points. The refractive lens includes a fluid chamber with a flat glass surface and an opposing elastic polydimethylsiloxane (PDMS) membrane surface. Inserting fluid volume through a pump system into the clear aperture region alters the membrane curvature and adjusts the refractive lens' focal position. Primary chromatic aberration is remarkably reduced through the coupling of the fluidic and diffractive lenses at a number of selected focal lengths. Potential applications include miniature color imaging systems, medical and ophthalmic devices, or any design that utilizes variable focal length achromats. | 10-31-2013 |
| 20130342775 | HIGH SCATTERING SMECTIC LIQUID CRYSTAL MATERIAL AND DISPLAY DEVICE USING THE SAME - The present invention relates to a high scattering smectic liquid crystal material and display device using the same. In the present invention, a series of smectic A phase liquid crystals having compact arrangement of crystal domains or a series of smectic liquid crystal mixed materials having a degree of order higher than that of the smectic A phase and an optical texture different from that of the smectic A phase are obtained by mixing a smectic liquid crystal with an organic compound having a high optical anisotropy (Δn) or mixing different types of smectic phases. When used in a smectic stable state liquid crystal display pattern, these materials have high scattering properties and can effectively improve the contrast of a smectic liquid crystal display device. The present invention also improves contrast when it used in a reflective smectic liquid crystal display device. | 12-26-2013 |
