Patent application number | Description | Published |
20120152735 | Production of Nanoparticles - Composite nanoparticles can be produced by a processing apparatus comprising a source of charged, moving nanoparticles or a first material and a first size, apparatus for imposing a like potential in a region lying in the path of the nanoparticles, and a physical vapour deposition source of a second material directed toward the region, thereby to produce nanoparticles of a second and greater size being a composite of the first and second materials. The apparatus for imposing a like potential can comprise one or more conductive rings surrounding the path of the nanoparticles, each at a successively lower potential. The physical vapour deposition source can be one or more of a sputter target, or an evaporative source, or another PVD source. There can be a plurality of physical vapour deposition sources, thereby allowing a larger region in which the shell is deposited. All of the physical vapour deposition sources can deposit the same material, for a uniform shell. Alternatively, different sources could allow for multiple shells or alloy shells. | 06-21-2012 |
20120267237 | Production of Nanoparticles - We have found that a pulsed DC supply is surprisingly beneficial in the use of sputter deposition for creating nanoparticles. The deposition rate is increased, and the particle size can be tuned so that it clusters around a specific value. A method of sputter deposition is therefore disclosed, comprising the steps of providing a magnetron, a sputter target, and an AC power supply or a pulsed DC power supply for the magnetron, sputtering particles from the sputter target into a chamber containing an inert gas, allowing the particles to coalesce into nanoparticles, and controlling the frequency of said AC power supply or said pulsed DC power supply to take one of a plurality of frequency values, each frequency value corresponding to a respective size distribution of said nanoparticles. The power supply frequency is preferably between 75 kHz and 150 kHz as this appears to yield optimal results. A corresponding apparatus for generating nanoparticles is also disclosed. | 10-25-2012 |
Patent application number | Description | Published |
20090128746 | DISPLAY - A display includes a display device having a first polarizer and a second polarizer or a reflector, and a display layer disposed between the first polarizer and the second polarizer or the reflector. A liquid crystal layer is disposed between the display layer and one of the first polarizer and the second polarizer or reflector. The liquid crystal molecules of at least one region of the liquid crystal layer are switchable between a first state in which the display has a first display mode with a first viewing angle range and a second state in which the display has a second display mode having a second viewing angle range smaller than the first viewing angle range. In the second state, liquid crystal molecules of the at least one region are tilted with respect to the normal axis of the display over at least a portion of the thickness of the liquid crystal layer, and lie substantially parallel to a plane defined by the normal axis of the display and the transmission axis or absorption axis of the first polarizer or one of the first and second polarizers. | 05-21-2009 |
20090168164 | MULTIPLE-VIEW DIRECTIONAL DISPLAY - A multiple view directional display comprises a pixellated image display layer having a plurality of first pixels (P | 07-02-2009 |
20110012924 | DISPLAY DEVICE AND LIQUID CRYSTAL DISPLAY PANEL - A display device is provided that comprises a liquid crystal display panel for displaying an image by spatial light modulation, and circuitry for switching liquid crystal in the panel between having a first configuration in a first mode to cause an image displayed using the panel to be discernible from a wide range of viewing angles, and having a second configuration in a second mode to cause an image displayed using the panel to be discernible substantially only from within a narrow range of viewing angles. Several types of display panel to achieve such in-panel switching between public and private viewing modes are disclosed. | 01-20-2011 |
20120056914 | DISPLAY DEVICE AND LIQUID CRYSTAL DISPLAY PANEL - A display device is provided that comprises a liquid crystal display panel for displaying an image by spatial light modulation, and circuitry for switching liquid crystal in the panel between having a first configuration in a first mode to cause an image displayed using the panel to be discernible from a wide range of viewing angles, and having a second configuration in a second mode to cause an image displayed using the panel to be discernible substantially only from within a narrow range of viewing angles. Several types of display panel to achieve such in-panel switching between public and private viewing modes are disclosed. | 03-08-2012 |
20120147026 | DISPLAY DEVICE AND LIQUID CRYSTAL DISPLAY PANEL - A display device is provided that comprises a liquid crystal display panel for displaying an image by spatial light modulation, and circuitry for switching liquid crystal in the panel between having a first configuration in a first mode to cause an image displayed using the panel to be discernible from a wide range of viewing angles, and having a second configuration in a second mode to cause an image displayed using the panel to be discernible substantially only from within a narrow range of viewing angles. Several types of display panel to achieve such in-panel switching between public and private viewing modes are disclosed. | 06-14-2012 |
20120188238 | MULTIPLE-VIEW DIRECTIONAL DISPLAY - A multiple view directional display comprises a pixelated image display layer having a plurality of first pixels assigned to display a first image and a plurality of second pixels assigned to display a second image, and a parallax barrier aperture array for directing light from the first pixels generally into a first viewing window and for directing light from the second pixels generally into a second viewing window not overlapping the first viewing window. The display further comprises first light directing means for re-directing light emitted from a first lateral edge region of each first pixel away from the second viewing window. | 07-26-2012 |