Patent application number | Description | Published |
20080198109 | COLOR MAGNETIC DISPLAY PIXEL PANEL - A magnetic display panel having pixels formed of red, green, blue, and black sub-pixels. Each of the sub-pixel includes a magnetic material layer in which magnetic moments are oriented in a direction when a magnetic field is applied, a sub-pixel electrode applying a magnetic field to the magnetic material layer, a common electrode electrically connected to the sub-pixel electrode, and a control circuit switching the flow of current between the sub-pixel electrode and the common electrode. | 08-21-2008 |
20080198294 | LIQUID CRYSTAL DISPLAY DEVICE SWITCHABLE BETWEEN REFLECTIVE MODE AND TRANSMISSIVE MODE BY EMPLOYING ACTIVE REFLECTIVE POLARIZER - A liquid crystal display (LCD) device that is switchable between a transmissive mode and a reflective mode is provided. The LCD device includes a backlight; an active reflective polarizer which operates as a reflector that reflects incident light or as a reflective polarizer that reflects light of a first polarization and transmits light of a second polarization perpendicular to the first polarization, based on whether a magnetic field is applied; and a liquid crystal panel that modulates incident light to form images. The liquid crystal panel includes a liquid crystal layer, a first polarizer that is disposed on a rear surface of the liquid crystal layer and faces the active reflective polarizer, and a second polarizer that is disposed on a front surface of the liquid crystal layer. | 08-21-2008 |
20080198439 | MAGNETIC DISPLAY PIXEL AND MAGNETIC DISPLAY PANEL - Provided are a magnetic display pixel using an optical shutter having a magnetic material layer, and a magnetic display panel including the magnetic display pixel. The magnetic display pixel includes a magnetic material layer that transmits light when a magnetic field is applied and does not transmit the light when the magnetic field is not applied, a first electrode arranged on a lower surface of the magnetic material layer, a second electrode arranged on an upper surface of the magnetic material layer, and a spacer arranged at a side surface of the magnetic material layer to electrically connect the first electrode and the second electrode. | 08-21-2008 |
20080198440 | ACTIVE REFLECTIVE POLARIZER AND MAGNETIC DISPLAY PANEL COMPRISING THE SAME - Provided are an active reflective polarizer and a magnetic display panel comprising the same. The active reflective polarizer includes a magnetic material layer in which magnetic moments are arranged in one direction when a magnetic field is applied; and electrodes for applying magnetic fields to the magnetic material layer in two different directions. | 08-21-2008 |
20080198441 | COLOR SELECTIVE ACTIVE POLARIZER AND MAGNETIC DISPLAY PANEL EMPLOYING THE SAME - Provided are a color selective active polarizer controlled by a magnetic field and a magnetic display panel employing the color selective active polarizer. The color selective active polarizer includes a magnetic material layer structured such that magnetic particles are buried in a transparent insulating medium. Dyes or color absorbing particles are mixed in the magnetic material layer. The color selective active polarizer transmits light polarized in a first direction and reflects light polarized in a second direction when a magnetic field is applied. The light polarized in the first direction transmitted by the color selective active polarizer has colors according to the dyes or color absorbing particles. | 08-21-2008 |
20080199667 | MAGNETIC FIELD CONTROLLED ACTIVE REFLECTOR AND MAGNETIC DISPLAY PANEL COMPRISING THE ACTIVE REFLECTOR - Provided is an active reflector that transmits or reflects light by being controlled by a magnetic field and a magnetic display panel that employs the active reflector. The active reflector includes a magnetic material layer in which magnetic particles are buried in a transparent insulating medium, and the magnetic material layer has an optical incident surface having an array of hybrid curved surfaces which include a central surface having a convex parabolic shape and an axis of symmetry and a peripheral surface having a focal point on the axis of symmetry of the central surface and a concave parabolic shape extending from the central surface. | 08-21-2008 |
20090052007 | REFLECTIVE MAGNETIC DISPLAY - A reflective magnetic display includes a magnetic material layer region formed between front and rear substrates, wherein the magnetic material layer region has magnetic particles that reflect or absorb incident light when magnetic moments are randomly oriented and reflect or transmit the incident light in, accordance with polarization of the incident light, when the magnetic moments are aligned in a direction and an electrode that is designed to apply a magnetic field inducing a magnetic moment alignment on the magnetic material layer region in accordance with electrical operation. | 02-26-2009 |
20100103500 | OPTICAL SHUTTER HAVING CHARGED PARTICLE AND DISPLAY APPARATUS USING THE SAME - Provided are an optical shutter including charged particles, and a display apparatus using the optical shutter. The optical shutter may block or transmit light by changing the position of the charged particle according to a direction an electrical field is applied. Also, a new type of display apparatus may be realized by using the optical shutter as a pixel of the display apparatus. The charged particles react very quickly to the change of the electrical field, and thus, a display apparatus having high operational speed may be realized. | 04-29-2010 |
20100110560 | VARIFOCAL LENS AND IMAGING APPARATUS INCLUDING THE SAME - Provided are a varifocal lens having a focal length that may be electrically controlled, and an imaging apparatus including focal length. Varifocal lens includes fluid sealed between two transparent flexible layers. An upper flexible layer is supported by support plate having opening having a lens shape, and vacuum is maintained on upper flexible layer. Portion of lower flexible layer, which faces opening having a lens shape, is fixed by a fixation plate, and a chamber having a predetermined space is formed below the lower flexible layer so as to surround a portion corresponding to the opening having the lens shape. Charged particles are positioned in the chamber. In the varifocal lens, when the charged particles are moved by an electrical field generated in the chamber to compress the lower flexible layer, a lens region of the upper flexible layer protrudes in an upper direction so as to obtain refractive power. | 05-06-2010 |
20100118419 | METHOD OF CONSTRUCTING PHYSICAL LENS BASED ON DEPTH-OF-FOCUS CHARACTERISTICS, AND LENS WITH EXTENDED DEPTH OF FOCUS CONSTRUCTED BY THE METHOD - A method of constructing a physical lens based on depth of focus characteristics and an axially symmetric lens with an extended depth of focus constructed by the method are provided. An expression is deduced by substituting a depth of focus characteristic and a relation between vectors of arbitrary points on a lens surface into Snell's law, and partial differentiation is performed on the expression to yield a differential equation satisfied with arbitrary points on the lens surface. The differential equation is solved by, for example, numerical analysis to obtain a curve of an axially symmetric physical lens surface. | 05-13-2010 |
20100147371 | Energy harvesting devices - Energy harvesting devices including first nano-helixes amplifying incident electromagnetic waves, second nano-helixes inducing currents from the electromagnetic waves amplified by the first nano-helixes, and a diode rectifying induced currents generated by the second nano-helixes. | 06-17-2010 |
20120314270 | ELECTROMAGNETIC WAVE GENERATOR AND OPTICAL SHUTTER USING THE SAME - An electromagnetic wave generator for outputting wideband electromagnetic waves, including terahertz (THz) band waves, and for controlling wavelengths of the output electromagnetic waves and an optical shutter are provided. The electromagnetic wave generator includes two electrodes that separately face each other, a chargeable particle disposed between the two electrodes, and a chamber disposed to surround the chargeable particle between the two electrodes. When DC voltages are applied to the two electrodes to generate an electric field between the two electrodes, the chargeable particle may be charged. Then, the chargeable particle reciprocates between the two electrodes to generate the electromagnetic waves. A wavelength of the output electromagnetic wave may be controlled by adjusting a potential difference between the two electrodes. | 12-13-2012 |
20130239791 | APPARATUS HAVING FRICTION PREVENTING FUNCTION AND METHOD OF MANUFACTURING THE SAME - A friction preventing apparatus and a method of manufacturing the same are provided. The apparatus includes: a first object; a second object spaced apart from the first object and facing the first object; and a plurality of charged nanoparticles provided on a surface of one of the first and second objects, such that the nanoparticles are disposed between the first object and the second object. A potential difference is formed between the first and second objects. The nanoparticles may be positively charged and may adhere to the first object, and the first object has a potential lower than a potential of the second object. The nanoparticles may be negatively charged and may adhere to the second object, and the second object has a potential higher than a potential of the first object. | 09-19-2013 |
20140042335 | ELECTROMAGNETIC WAVE GENERATOR AND BIT GENERATOR USING OSCILLATION OF CHARGED PARTICLES - An electromagnetic wave generator includes first and second electrodes facing each other and spaced apart from each other; a chargeable particle disposed between the first and second electrodes; a voltage source which applies a voltage between the first and second electrodes; and an antenna electrically connected to one of the first and second electrodes and which radiates an electromagnetic wave due to induced current oscillation based on the applied voltage. | 02-13-2014 |