21st week of 2009 patent applcation highlights part 20 |
Patent application number | Title | Published |
20090127958 | Anisotropic Bonded Magnet and Direct Current Motor Using the Same - The rectifying characteristic of a brush-equipped direct current machine is improved, and the life of the machine is extended. | 2009-05-21 |
20090127959 | ELECTRICAL DIRECT DRIVE FOR A ROLLER - An electrical roller drive which can be connected to a roller includes a disk-type motor with a secondary part in the form of a disk and with a primary part in the form of a disk. | 2009-05-21 |
20090127960 | ANISOTROPIC PERMANENT MAGNET MOTOR - An anisotropic permanent magnet motor includes a stator and a rotor opposed to teeth of the stator with a gap therebetween, and the rotor includes an anisotropic permanent magnet disposed on a surface of a rotor yoke. The anisotropic permanent magnet has an orientation direction set in a direction normal to the outer-peripheral surface in a range of both θr°/2 from a magnetic pole center and continuously inclined toward a magnetic pole end with respect to a direction normal to the outer-peripheral surface. | 2009-05-21 |
20090127961 | PERMANENT MAGNET ROTOR - The invention relates to a permanent magnet rotor for an electric motor, in which the permanent magnets inside the rotor extend parallel to the rotation axis of the rotor, and in the area of the radially outer longitudinal edges of the permanent magnets, grooves that are open to the outside are formed on the outer periphery of the rotor. These groves are each, in a peripheral direction, slanted or curved with regard to the longitudinal edge of the adjacent permanent magnets. The center line of each groove intersects the longitudinal edge of the adjacent permanent magnet at least once. The grooves on the outside of the rotor have, in the peripheral direction, a smaller width than in an area of the groove situated radially further inside, and the cross-sectional shape of the groove is constant over the length of the rotor. The invention also relates to a method for producing a rotor of the aforementioned type. | 2009-05-21 |
20090127962 | CORE, ROTOR, MOTOR AND COMPRESSOR - A rotor includes a core extending in a predetermined directions, and a plurality of magnets. The core has parts formed by magnetic materials and extending in the predetermined direction. The parts are arranged in a loop around the part, and face the part through gaps. The magnets are buried in the gaps in the form of a loop in the core. The magnets have pole faces extending in the predetermined direction. In each of the magnets, at least one of ends of the magnet protrudes forward in parallel to the predetermined direction with respect to an end of the part that is on the same side with the at least one of the ends of the magnet. | 2009-05-21 |
20090127963 | ELECTRIC MOTOR WITH FIELD WEAKENING - An electric motor comprising a rotor, a stator and a field weakening device. The rotor has a plurality of magnets mounted thereto, and the stator is located adjacent to the rotor and has a plurality of slots defined therein. The slots define raised teeth and are wound with electrical wiring to generate a magnetic field when the wiring is energized with current. The field weakening device is made from a highly magnetically permeable material and a comparatively lower magnetically permeable material. The field weakening device is disposed between the rotor and the stator and is selectively movable between a first position to align the highly magnetically permeable material between the teeth of the stator and the magnets of the rotor and a second position to align the comparatively lower magnetically permeable material between the teeth of the stator and the magnets of the rotor. | 2009-05-21 |
20090127964 | BRUSHLESS MOTOR - This brushless motor according to the present invention is provided with: a tubular stator case; a stator core; a rotore; a plurality of teeth which are integrally formed on an inner peripheral surface of the stator core; a coil bobbin mounted between the mutually adjacent teeth, which has a winding portion around which a coil is wound; a lead wire; and a wiring substrate which relays a connection between the lead wire and the coil, wherein: the coil bobbin has flange portions; one of the flange portions which is located on the inward in the radial direction has an enlarged member which protrudes outward from the surface of the flange portion; a pair of terminals which is connected to the wiring substrate is provided on the enlarged portion so as to be located more inward than a tip of the tooth in the radial direction. | 2009-05-21 |
20090127965 | ROTATIONAL ELECTRIC MACHINE HAVING FIELD WINDING FORMED BY COUPLING FORMED COIL TO BOBBIN - The rotational electric machine includes a cylindrical yoke and a field winding connected to an inner surface of the cylindrical yoke. The field winding is composed of plural formed coils, each coupled to a bobbin. The bobbin includes a first flange for insulating the formed coil from the inner surface of the cylindrical yoke, a second flange for insulating the formed coil from a supporting brim of a pole core and a pipe portion for insulating the formed coil from a boss portion of the pole core. The first flange is made all around the pipe portion while the second flange is formed to extend only in the lateral direction of the pipe portion. The bobbin is easily coupled to the formed coil by flexibly bending the bobbin. Alternatively, the bobbin or bobbins may be made by folding a bobbin sheet after placing the formed coils on the bobbin sheet. | 2009-05-21 |
20090127966 | STATOR WINDING METHOD AND APPARATUS - A stator assembly includes a stator core and at least one conductive bundle. The stator core has a first end, a second end, and a plurality of slots extending from the first end to the second end. The conductive bundle includes a plurality of individually insulated conductive wires. At least one portion of the at least one conductive bundle extends from the first end to the second end of one slot of the plurality of slots. The at least one portion is twisted by a predetermined amount within the one slot to minimize a circulatory current along the plurality of individual insulated conductive wires in the at least one portion. | 2009-05-21 |
20090127967 | METHODS FOR FABRICATING A WEDGE SYSTEM FOR AN ELECTRIC MACHINE - A method for assembling an electric machine is provided. The method includes providing a rotor having a cavity formed therein. At least one contoured recess is formed in a portion of the cavity. A wedge is inserted into the cavity. The wedge includes at least one contoured protrusion that is configured to mirror the at least one contoured recess of the cavity. The wedge is inserted such that the at least one contoured protrusion is positioned within the at least one contoured recess to facilitate positioning the wedge within the cavity. The at least one contoured protrusion and the at least one contoured recess are shaped to facilitate minimizing stresses within the rotor and the wedge. | 2009-05-21 |
20090127968 | ELECTRICAL MACHINE WITH AN END-SIDE DEFLECTION OF ELECTRICAL CONDUCTORS - Disclosed is an electric machine comprising a rotational shaft and a base that is provided with two axial faces and grooves for accommodating electrical conductors ( | 2009-05-21 |
20090127969 | INSULATING BOBBIN FOR STATOR OF ROTARY MACHINE - An insulating bobbin for disposition between a stator core and a stator winding of a stator of a rotating machine, the stator winding being wound around the stator core by way of the insulating bobbin, the insulating bobbin comprising a coil end section at which an end portion of the stator winding is disposed, a slot side section forming a slot for winding thereon the stator winding, and a corner section having a curved surface and connecting between the coil end portion and the slot side portion, the corner section having a first radius of curvature at a side closer to the coil end section and a second radius of curvature at a side closer to the slot side section, the second radius of curvature being larger than the first radius of curvature. | 2009-05-21 |
20090127970 | Stator core element, production apparatus, and production method - A stator core is composed of two compacts of compressed powder magnetic cores joined in the axial direction. A yoke portion includes projections projecting axially outward from end surfaces in the axial direction of a tooth. The length in the axial direction of the tooth is gradually reduced radially toward the outside of the stator core, and the length in the circumferential direction of the tooth is gradually increased radially toward the outside of the stator core. A molding is formed by pressing magnetic powder placed in a die by a single punch placed on one side in the axial direction and two punches placed parallel to each other on the other side in the axial direction. The stator core for a rotary electric machine is thus produced. | 2009-05-21 |
20090127971 | BRUSHLESS MOTOR - A brushless motor according to the present invention is provided with: a tubular stator case; a stator core; and a rotor. The stator core includes a tubular yoke portion and a plurality of split cores. A plurality of dovetail grooves are formed in an inner peripheral surface of the yoke portion; each split core has a coil bobbin which has a mounting hole so as to penetrate in a radial direction, and a split teeth which is mounted into the mounting hole of the coil bobbin. The coil bobbin has a winding portion, and flange portions, and a clearance portion into which a winding starting end of the coil is strayed from the winding portion is formed on the inside of the one of the flange portions by reducing the thickness of the flange portion such that. | 2009-05-21 |
20090127972 | BRUSHLESS MOTOR - A brushless motor according to the present invention is provided with a tubular stator case, a stator core fitted into the stator case, and a rotor rotatably supported via a bearing inside the stator core. The stator core includes a tubular yoke portion and a plurality of split cores which are detachably mounted on the tubular yoke portion. A plurality of commutating-pole teeth which extend radially inward are integrally formed on an inner peripheral surface of the tubular yoke portion at regular intervals in the peripheral direction of the tubular yoke portion; and a root portion of each of the commutating-pole teeth has inclined shoulders which are gradually enlarged radially outward. | 2009-05-21 |
20090127973 | Sonic fine-hole forming apparatus - Disclosed is a sonic fine-hole forming apparatus for forming a fine-hole in a surface of a membrane or solid body in a liquid by means of sonic energy. The sonic fine-hole forming apparatus is adapted to generate a sonic oscillation driving signal comprises a voltage waveform which has positive and negative voltage portions being asymmetrical, and a sharp peak portion. The sonic fine-hole forming apparatus includes a sonic oscillation section having a surface provided with a covering layer or a protective material having an electrically insulating property and a sonic transparency. The coated layer or a protective material is formed to have a thickness of 10 μm or more. The sonic fine-hole forming apparatus of the present invention can form a fine-hole in a surface of a solid body without using a large-scale apparatus, while suppressing a destructive action around the fine-hole. | 2009-05-21 |
20090127974 | SMALL PIEZOELECTRIC OR ELECTROSTRICTIVE LINEAR MOTOR - A piezoelectric/electrostrictive linear motor is provided. A movable shaft is coupled to a unimorph or bimorph, which is made by attaching a piezoelectric or electrostrictive substrate to an elastic body, so that a movable body provided with respect to the movable shaft is linearly moved along the movable shaft by the vibration or movement of the piezoelectric or electrostrictive substrate. | 2009-05-21 |
20090127975 | Method and device for eliminating vibrations of a mechanical structure - The invention describes a device as well as a method for eliminating vibrations of a mechanical structure with at least one electromechanical converter material that is actively connected to the mechanical structure and connected to an electric circuit arrangement with at least one electrical impedance. The invention is characterized in that the electric circuit is connected to an interface, via which the at least one electrical impedance can be variably adjusted by means of wireless or wired communication with a control unit that is separated from the electronic circuit arrangement, and in that the electrical impedance features at least one ohmic resistor and/or one inductive resistor and/or one capacitor that are respectively realized variably. | 2009-05-21 |
20090127976 | Method and Apparatus for Harvesting Energy from Mechanical Vibrations - A method of harvesting energy from a vibrational energy source having a varying energy characteristic. The method includes the step of varying a characteristic of a harvesting arrangement arranged to harvest the energy, the characteristic of the harvesting arrangement being varied in response to the varying energy characteristic of the vibrational energy source. | 2009-05-21 |
20090127977 | Method and Apparatus for Imaging Utilizing an Ultrasonic Imaging Sensor Array - The subject invention pertains to a piezoelectric device structure for improved acoustic wave sensing and/or generation, and process for making same. The piezoelectric thin film field effect transducer can be a thin film transistor (TFT) with either a piezoelectric film gate or a composite gate having a dielectric film and a piezoelectric film. The TFT structure can be either a top gate device or a bottom gate device. In an embodiment, the piezoelectric device structure can be used to form an array of piezoelectric thin film field effect transducers. A TFT switch can drive each piezoelectric transducer in the array. The piezoelectric transducers can both generate and sense acoustic waves. In a sensing mode, a signal from an acoustic wave can be collected at a readout terminal of the piezoelectric transducer. In a generating mode, an excitation signal can be applied across the piezoelectric transducer while the switch is ‘on’. | 2009-05-21 |
20090127978 | Film bulk acoustic wave resonator, its fabrication method and film bulk acoustic wave resonator filter using the resonator - The film bulk acoustic wave resonator includes a laminate structure composed of a piezoelectric layer, and first and second electrode layers interposing at least part of the piezoelectric layer, in which the first metal electrode is dispersively formed on an electrode plane facing the second metal electrode, and a gap is formed in a substrate correspondingly to the laminate-structured resonance part. Except for an area of a wire electrode electrically connected to the first electrode layer and an area of a wire electrode electrically connected to the second electrode layer, the piezoelectric layer, first electrode layer and second electrode layer do not come in contact with the insulating substrate but are supported on a hollow. Also, a prop is formed in the gap to support the laminate structure. | 2009-05-21 |
20090127979 | Actuator - An actuator includes a spirally rolled cylindrical sheet body. The sheet body is formed by attaching an electrode on each side of a dielectric elastomer layer. When a voltage is applied to the electrodes, the sheet body is contracted along the direction of its thickness, and expanded in directions perpendicular to its thickness. The actuator is actuated by applying a voltage to the electrodes and stopping the voltage application, so that the cylindrical sheet body is extended and contracted along the direction of the axis. The material forming the dielectric elastomer layer has a low strain region, where the value of a strain based on a stress acting on the dielectric elastomer layer varies from zero to a value that is greater than and close to zero, and a high strain region, where the value of the strain is greater than that in the low strain region. The Young's modulus in the low strain region is less than the Young's modulus in the high strain region. | 2009-05-21 |
20090127980 | POLYMER ACTUATOR - In a polymer actuator provided with a first polymer structural member having a conductive property, an electrolyte retention layer electrically connected to the first polymer structural member, and a second polymer structural member electrically connected to the first polymer structural member through the electrolyte retention layer interposed therebetween and having a conductive property, and by applying a potential difference between the first polymer structural member and the second polymer structural member, the first polymer structural member and the second polymer structural member are allowed to expand and contract, by displacement of the second polymer structural member, the potential difference between the first polymer structural member and the second polymer structural member is changed. | 2009-05-21 |
20090127981 | PIEZOELECTRIC DEVICE, ANGULAR VELOCITY SENSOR, AND METHOD OF MANUFACTURING A PIEZOELECTRIC DEVICE - A piezoelectric device includes a piezoelectric film and an electrode film. The piezoelectric film is constituted of lead zirconium titanate represented by Pb | 2009-05-21 |
20090127982 | PLANAR SPRING ASSEMBLY WITH ATTACHED SOLDER STRIP AND METHOD FOR MAKING SAME - There is disclosed for use with a piezoelectric stack, first and second side electrodes, each side electrode having two serpentine shape members positioned in a common plane, where the two serpentine shape members of an electrode have alternately spaced conductive fingers which project outward toward each other. The conductive fingers are adapted to be electrically coupled to the ends of alternate ones of internal electrode layers of the piezoelectric stack. The undersides of the conductive fingers which contact the ends of the internal electrodes are provided with a solder material to provide good electrical contact by applying the soldered finger to the internal electrode and applying heat to reflow the solder. The serpentine shape of the side electrodes here disclosed provides high flexibility which can absorb displacement of the internal electrodes as they move up, down, in and out as the piezoelectric layers of the stack expand and contract. This flexibility helps to avoid electrical contact separation between the side electrodes and the internal electrodes. | 2009-05-21 |
20090127983 | TUNING FORK TYPE PIEZOELECTRIC RESONATOR ELEMENT AND TUNING FORK TYPE PIEZOELECTRIC RESONATOR - A tuning fork type piezoelectric resonator element includes: a base including a pair of cuts provided opposite from each other and a constricted part located between the pair of cuts, a pair of resonator arms extending from the base, and an excitation electrode provided to each of the pair of resonator arms. When the pair of resonator arms vibrate at an inherent resonance frequency f | 2009-05-21 |
20090127984 | Motor magnetic pre-stressing apparatus - A motor magnetic pre-stressing apparatus includes a stator and a rotor. The rotor is pivoted with the stator. The stator includes a lower insulating frame and a magnetic-guiding ring, and the magnetic-guiding ring is installed on the lower insulating frame. The rotor has a magnetic element, and the magnetic element has even radial magnetic poles. Thereby, by utilizing the attraction between magnetic-guiding ring and the magnetic element, a magnetic pre-stressing force is generated to absorb the rotor downwards so that the rotor rotates stably and smoothly. | 2009-05-21 |
20090127985 | COMBINATION OF DISK MOTOR AND MACHINE - An electric disk motor having a primary part and a secondary part is connected to a machine by bearing-mounting the primary part on a drive shaft of the machine and by securely fixing the primary part to a supporting structure for support of the machine. | 2009-05-21 |
20090127986 | Furniture - The present invention relates to an article of furniture, such as a desk or cabinet which has a horizontal display ( | 2009-05-21 |
20090127987 | DOOR LATCH - A cabinet includes a frame portion and a door hingedly connected to the frame portion. A member is rigidly connected to the door and includes a flange portion extending from and spaced apart from an outer surface of the door. A handle is pivotably connected to the door and includes a user graspable portion disposed between the first outer surface of the door and the flange portion of the member. A catch member is rigidly connected to the user graspable portion and extends through a slot in the door for interlocking engagement with a retention feature disposed on the frame portion. When the door is in a closed position, handle is pivotable with respect to the door from a door retention position to a door release position for disengagement of the catch member from the door retention feature. | 2009-05-21 |
20090127988 | Device for a computer case cover - A covering for a computer case that combines elements of aesthetic and functional features. Attachment to the computer case optionally using magnets, clips and the like. Openings or openable doors to give access to functional buttons, ports and CD tray. Pockets to hold CD's and other like needs. Optional features could include a led lighting and vocal effects. | 2009-05-21 |
20090127989 | Tool Chest Creeper Seat With Trays - A mobile apparatus includes a storage unit on a movable base and includes a seat for supporting the user. The user has access to desired articles contained in the storage unit. | 2009-05-21 |
20090127990 | Retracting device for a drawer - A retracting device for a drawer, comprising a pulling device which can be connected to the drawer, a drive unit having an electric motor, and a roller drivable by the drive unit for winding up the pulling device, wherein the drive unit is activatable by a rotation of the roller. | 2009-05-21 |
20090127991 | Switching cabinet arrangement with a main door and at least one auxiliary door - A switching cabinet arrangement equipped with a main door and at least one auxiliary door having a locking device mounted on them, which has an actuating mechanism that causes an actuating device to unlock the auxiliary door as the main door is opened. The locking device has a blocking mechanism that acts on the actuating device and prevents the main door from closing when an auxiliary door is open. | 2009-05-21 |
20090127992 | Support construction for at least one furniture drive - A support construction for fixing at least one furniture drive ( | 2009-05-21 |
20090127993 | Refrigerating device with height-adjustable carrier for refrigerated goods - The invention relates to a refrigeration device having a thermally insulating housing delimiting an interior space and a height-adjustable carrier for supporting refrigerated goods within the interior space. The refrigeration device also includes a threaded spindle having a threaded extent having a substantially vertical axis, the threaded spindle being rotatably driven such that its threaded extent rotates about the axis and the threaded spindle being operationally connected with the refrigerated goods carrier such that a rotational movement of the threaded extent of the threaded spindle effects a height adjusting displacement of the refrigerated goods carrier. | 2009-05-21 |
20090127994 | Tandem continuous channel electron multiplier - A channel electron multiplier including a single channel CEM for receiving an input particle. A multi-channel CEM is positioned after the single channel CEM for receiving emissions from the single channel CEM. An electron collector is positioned after the multi-channel CEM for generating a pulse current in response to emissions from the multi-channel CEM. | 2009-05-21 |
20090127995 | CURVED MCP CHANNELS - A microchannel plate (MCP) is formed from a boule. The MCP includes a plate having opposing end surfaces formed of acid resistant glass and acid etchable glass, and multiple channels extending longitudinally between the opposing end surfaces. The multiple channels are formed by circumferential walls of the acid resistant glass that surround the acid etchable glass. A respective circumferential wall forms a curved surface extending longitudinally between the opposing end surfaces. The curved surface is configured to reduce light from passing from one end surface to the other end surface. The acid resistant glass has a lower softening temperature than the acid etchable glass. As a result, the acid etchable glass may be subjected to a bending process, without reducing the diameter size of the microchannels that are formed after the bending process. | 2009-05-21 |
20090127996 | IRIDIUM ALLOY FOR SPARK PLUG ELECTRODES - A spark plug comprises a shell having a substantially cylindrical threaded portion for threadable engagement in a cylinder head of an internal combustion engine, an insulator disposed coaxially in the shell, a center electrode disposed coaxially in the insulator, a side ground electrode having a first end coupled to the shell and a second end facing an end of the center electrode to define a spark discharge gap therebetween, and an electrode tip portion secured to either the side ground electrode or the center electrode proximate the spark discharge gap. The tip portion is formed from an alloy comprising from about 60 to about 70 percent by weight iridium, from about 30 to about 35 percent by weight rhodium, from 0 to about 10 percent by weight nickel, from about 3500 to about 4500 parts per million tantalum, and from about 100 to about 200 parts per million zirconium. | 2009-05-21 |
20090127997 | SPARK PLUG FOR INTERNAL COMBUSTION ENGINE - A spark plug including: a rod-shaped center electrode; an insulator; a metal shell; a ground electrode joined to the metal shell and bent toward the center electrode; a noble metal tip joined to an end portion of the ground electrode and opposing a leading end portion of the center electrode via a gap; and a bulge portion. A part of the noble metal tip is embedded in the ground electrode, and another part of the noble metal tip protrudes from a distal end surface of the ground electrode. A relationship A≧0.25 mm is satisfied where A (mm) is a protruding length of the noble metal tip from the distal end surface. The bulge portion covers a center part of a boundary between the noble metal tip and the end surface in a width direction. | 2009-05-21 |
20090127998 | SPARK PLUG - A spark plug including: a center electrode including an electrode base member and a core member; an electrode tip joined to the center electrode via a molten bond; an insulator holding the center electrode; a metal shell holding the insulator; and a ground electrode joined to the metal shell. Relationships d≦2.1 [mm] and −0.09×d+0.332009-05-21 | |
20090127999 | Discharge lamp with a monolithic ceramic color converter - The invention relates to a light emitting device, in particular discharge lamps with inner or outer electrodes or electrodeless in which the emittance of red light is enhanced by using a monolithic ceramic luminescence converter. | 2009-05-21 |
20090128000 | INSECT ATTRACTION LIGHT SOURCE - A lamp having improved insect attraction is provided. The lamp has a light-transmissive envelope being substantially free of cerium. The lamp also has a phosphor layer comprising at least one phosphor having an emission band in the UVA light region for attracting insects. The at least one phosphor of the phosphor layer desirably has an emission spectrum in the UVA region that sufficiently matches an insect's eye sensitivity curve. For instance, the at least one phosphor can have an emission band in the UVA wavelength range of 320 to 400 nm, wherein said emission band has a maximum between 325 to 365 nm. | 2009-05-21 |
20090128001 | ELECTRODE FOR COLD-CATHODE FLUORESCENT LAMP - A cold-cathode fluorescent lamp having high brightness with long life and an electrode for this lamp are offered. The electrode comprises a base and a covering layer that covers the surface of the base. The base is formed of one metal selected from nickel, a nickel alloy, iron, and an iron alloy. Consequently, a base having a shape, such as a cup, can be easily produced. The covering layer comprises (a) a surface layer made of tungsten or molybdenum and (b) a bonding layer that is made of zinc alloy and that is placed between the base and the surface layer. In comparison with nickel and iron, tungsten and molybdenum are resistant to sputtering, have a small work function, and have a high melting point. The presence of the bonding layer enables sufficient bonding between the surface layer and base. A cold-cathode fluorescent lamp provided with the foregoing electrode can suppress the reduction in brightness and the consumption of the electrode. Therefore, it has high brightness and long life. | 2009-05-21 |
20090128002 | Two-Way Reciprocal Amplification Electron/Photon Source - In one embodiment of the present invention, an electron/photon source is disclosed based on field emission, cathodoluminescent and photo-enhanced field emission, including an evacuated chamber inside a housing, further including an anode and a cathode arranged inside the evacuated chamber. Furthermore, the cathode is arranged to emit electrons when a voltage is applied between the anode and cathode, the anode being arranged to emit light at a first wavelength range when receiving electrons emitted from the cathode, and a wavelength range converting material arranged to receive the emitted light of the first wavelength range and emit light at a second wavelength range. In a novel way, an embodiment of the present invention makes it possible to, in two steps, convert the electrons emitted from the cathode to visible light. The invention has shown to be advantageous, and makes it possible to select new emission materials, manufactured at a fraction of the cost associated with the earlier used materials where the electron to visible light conversion was done in one step. | 2009-05-21 |
20090128003 | SCREEN STRUCTURE, DISPLAY PANEL AND ELECTRONIC EQUIPMENT USING THE SAME, AND METHOD OF MANUFACTURING THE SAME - The present invention is a screen structure which has a transparent substrate and a color filter on the transparent substrate, and in which light from a source of luminescence transmits the color filter and the transparent substrate, and the transparent substrate has a height difference specified by a refractive index of the transparent substrate, a refractive index of the color filter, and a wavelength of the light which transmits the color filter in an interface with the color filter. | 2009-05-21 |
20090128004 | LIGHT-EMITTING DEVICE - A light-emitting device comprises a substrate, at least one light-emitting structure configured to emit light beams and positioned on the substrate, and a ring-shaped photonic crystal structure positioned in the light-emitting structure. The ring-shaped photonic crystal structure includes a plurality of pillars positioned in the light-emitting structure and a plurality of ring-shaped openings surrounding the pillars. The distance between the ring-shaped openings is preferably between 0.2λ and 10λ, and λ represents the wavelength of the light beam. | 2009-05-21 |
20090128005 | Organic Electroluminescent Element and Manufacturing Method Thereof - An organic electroluminescent element | 2009-05-21 |
20090128006 | SILICON-CONTAINING PHOSPHOR FOR LED, ITS PREPARATION AND THE LIGHT EMITTING DEVICES USING THE SAME - A silicon-containing phosphor for LED and its preparation method, and the devices incorporating the same. The phosphor in the present invention can be represented as AO.aSiO | 2009-05-21 |
20090128007 | COPOLYMER FOR CHARGE TRANSPORT LAYER IN OPTO-ELECTRONIC DEVICE - The invention relates to a copolymer for a charge transport layer in an optoelectronic device and in particular in a light-emitting diode (LED), having a charge mobility of at least 1.0×10 | 2009-05-21 |
20090128008 | PLATINUM COMPLEX COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE - An organic electroluminescent device is provided and has at least one organic layer between a pair of electrodes. The organic compound contains a compound represented by the following formula (I): | 2009-05-21 |
20090128009 | Materials for organic electroluminescence devices - The present invention relates to novel materials which can be used in organic electronic devices, in particular electroluminescent devices, and are certain derivatives of fused aromatic systems. | 2009-05-21 |
20090128010 | Green Electroluminescent Compounds and Organic Electroluminescent Device Using the Same - The present invention relates to organic electroluminescent compounds represented by Chemical Formula 1 or 2, a process for preparing the same, and an organic light emitting diode (OLED) which comprises, as a luminescent region interposed between an anode and a cathode, at least one compound (s) selected from those represented by Chemical Formula 1 or 2, and at least one compound selected from anthracene derivatives, benz[a]anthracene derivatives and naphthacene derivatives. The electroluminescent compound according to the present invention is a green electroluminescent compound having maximized electroluminescent efficiency and lifetime of device. | 2009-05-21 |
20090128011 | Organic Electroluminescent Device - Disclosed is an organic electroluminescent device (organic EL device) utilizing phosphorescence which is improved in luminous efficiency and sufficiently secured of driving stability. The organic EL device comprises an anode | 2009-05-21 |
20090128012 | ORGANIC LIGHT EMITTING DEVICE - An organic light emitting device includes an electron transport layer including an electron transport material and a metallic compound represented by Formula 1: | 2009-05-21 |
20090128013 | Heterocyclic compound and an organic light emitting device comprising the same - A heterocyclic compound represented by Formula 1 below: | 2009-05-21 |
20090128014 | Organic EL Display Device and Method for Manufacturing the Same - An organic EL display device includes a substrate, a plurality of first electrodes formed on the substrate, a plurality of partition walls for sectioning the first electrodes and for locating the first electrodes in different pixels, a hole transport layer including an inorganic layer, the hole transport layer formed on the first electrode, an organic light emitting layer formed on the hole transport layer, and a second electrode covering an entire surface of the hole transport layer with the organic light emitting layer. | 2009-05-21 |
20090128015 | ORGANIC LIGHT EMITTING DEVICE - An organic light-emitting device (“OLED”) improving adhesion of a frit is disclosed. The organic light-emitting device includes a first substrate, an auxiliary metallic layer disposed on a surface of the first substrate, a second substrate, a frit formed in overlapping relationship with the auxiliary metallic layer and interposed between the first and the second substrates to adhere the first and the second substrates together and wherein the auxiliary metallic layer is overlapped by the frit on the first substrate and formed separately from a wiring. | 2009-05-21 |
20090128016 | LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS - A light-emitting device includes a light-emitting element that has at least a light-emitting layer, a switching element that drives the light-emitting element, layered wiring lines that connect at least the light-emitting element and the switching element to each other, a substrate on which the light-emitting element, the switching element, and the layered wiring lines are provided, and a sealing substrate that is provided on the substrate with a plurality of sealing members interposed therebetween, and covers the light-emitting element. The plurality of sealing members include first and second sealing members. The first sealing member surrounds the periphery of the light-emitting element and is provided so as to at least partially overlap surface regions of the substrate where the light-emitting element, the switching element, and the layered wiring lines are provided. The second sealing member surrounds the periphery of the first sealing member. | 2009-05-21 |
20090128017 | ORGANIC ELECTRIC FIELD LIGHT-EMITTING DISPLAY DEVICE - An organic electric field light-emitting display device includes: a plurality of pixel circuits, each disposed at one of the intersections between a plurality of signal lines and a plurality of scan lines, each of the pixel circuits including an organic electric field light-emitting element; a power auxiliary circumferential line electrically connected to one of two electrodes adapted to apply an electric field to the organic electric field light-emitting element, the power auxiliary circumferential line being disposed in a ring-like arrangement around the pixel arrangement region; and a plurality of dummy wirings formed on the underlying layer of the power auxiliary circumferential line between the intersections between either one of the plurality of signal lines and the plurality of scan lines and the power auxiliary circumferential line, the plurality of dummy wirings being insulated and isolated from the signal or scan line in proximity. | 2009-05-21 |
20090128018 | ORGANIC LIGHT EMITTING DIODE DISPLAY AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to an OLED display and a manufacturing method thereof, including a gate line, a data line intersecting the gate line, a switching thin film transistor connected to the gate line and the data line, a driving thin film transistor connected to the switching thin film transistor, a first driving voltage line connected to the driving thin film transistor and overlapping the gate line and the data line, a first electrode connected to the driving thin film transistor, a second electrode facing the first electrode, and an light emitting member disposed between the first electrode and the second electrode. | 2009-05-21 |
20090128019 | DIFFUSION BARRIER COATINGS HAVING GRADED COMPOSITIONS AND DEVICES INCORPORATING THE SAME - A composite article comprises a substrate having at least a substrate surface and a graded-composition coating disposed on a substrate surface. The composition of the coating material varies substantially continuously across its thickness. The coating reduces the transmission rates of oxygen, water vapor, and other chemical species through the substrate such that the composite article can be used effectively as a diffusion barrier to protect chemically sensitive devices or materials. An organic light-emitting device incorporates such a composite article to provide an extended life thereto. | 2009-05-21 |
20090128020 | METHOD FOR MANUFACTURING ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE - An organic electroluminescent device includes partition walls dividing a region into a first region, a second region and a third region, a first organic layer disposed in the first region, a second organic layer disposed in the second region, and a third organic layer disposed in the third region. The first region includes a plurality of effective pixels involved in light emission, continuously disposed along a first aligning axis. Each effective pixel includes an effective pixel electrode, a common electrode, and the first organic layer between the effective pixel electrode and the common electrode. The second region and the third region oppose each other with the first region therebetween, and the first region, the second region and the third region are aligned along the first aligning axis. | 2009-05-21 |
20090128021 | ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - A bonding agent sheet ( | 2009-05-21 |
20090128022 | ORGANIC LIGHT EMITTING DEVICE AND MANUFACTURING METHOD THEREOF - An organic light emitting device having a photonic crystal structure and a manufacturing method thereof are provided. The organic light emitting device comprises: a substrate through which light passes; a photonic crystal layer formed on the substrate and having a photonic crystal structure; an intermediate layer formed on the photonic crystal layer and having a large refractive index compared with the photonic crystal layer; a first electrode layer formed on the intermediate layer; a light emitting layer formed on the first electrode layer and emitting light according to current flow; and a second electrode layer formed on the light emitting layer. | 2009-05-21 |
20090128023 | Organic light emitting display apparatus - An organic light emitting display apparatus that can prevent corrosion during manufacturing is disclosed. The apparatus can have a remarkably enhanced yield. The apparatus includes: a substrate having a display area, a thin film transistor disposed inside the display area, an electrode power supply line disposed outside the display area, a pixel electrode disposed inside the display area of the substrate and electrically connected to the thin film transistor, an auxiliary conductive layer contacting the electrode power supply line at a side of the electrode power supply line, a pixel defining layer exposing the pixel electrode covering the auxiliary conductive layer and exposing the electrode power supply line. The apparatus also includes an intermediate layer disposed on the pixel electrode and comprising an emitting layer, and a counter electrode disposed on the intermediate layer and extending outside the display area of the substrate to contact the electrode power supply line. | 2009-05-21 |
20090128024 | ORGANIC LIGHT-EMITTING DEVICE - An organic light-emitting device ( | 2009-05-21 |
20090128025 | Dual panel type organic electroluminescent device and method of fabricating the same - An organic electroluminescent device includes first and second substrates facing each other and spaced apart from each other; a gate line on an inner surface of the first substrate; a data line and a power line crossing the gate line and spaced apart from each other; a switching thin film transistor connected to the gate line and the data line; a driving thin film transistor connected to the switching thin film transistor and the power line, the driving thin film transistor including a channel region having a ring shape; an electric connection pattern connected to the driving thin film transistor, the connection pattern being disposed over the driving thin film transistor; and an organic electroluminescent diode on an inner surface of the second substrate, the organic electroluminescent diode being connected to the electric connection pattern. | 2009-05-21 |
20090128026 | LIGHT EMITTING DEVICE AND METHOD OF MANUFACTURING THE SAME - A high-quality light emitting device is provided which has a long-lasting light emitting element free from the problems of conventional ones because of a structure that allows less degradation, and a method of manufacturing the light emitting device is provided. After a bank is formed, an exposed anode surface is wiped using a PVA (polyvinyl alcohol)-based porous substance or the like to level the surface and remove dusts from the surface. An insulating film is formed between an interlayer insulating film on a TFT and the anode. Alternatively, plasma treatment is performed on the surface of the interlayer insulating film on the TFT for surface modification. | 2009-05-21 |
20090128027 | ACTIVE MATRIX DISPLAY DEVICE - An active matrix display device includes a driving section provided on a substrate, an insulating film stacked on the driving section, and light-emitting elements arranged in a matrix on the insulating film, each of the light-emitting elements having a light-emitting layer between upper and lower electrodes, the active matrix display device being driven by the driving section provided for each of the light-emitting elements, the active matrix display device also includes an auxiliary wiring provided on the same layer as the lower electrode of the light-emitting element and adapted to adjust the electrical resistance of the upper electrode, and drive wirings disposed in the underlying layer of the auxiliary wiring via the insulating film and adapted to drive the light-emitting element, wherein the auxiliary or drive wiring is routed in a roundabout manner where the auxiliary and drive wirings overlap. | 2009-05-21 |
20090128028 | COLOR-STABLE PHOSPHOR CONVERTED LED - A light-emitting device is provided, comprising at least one light-emitting diode ( | 2009-05-21 |
20090128029 | LIGHT EMITTING DEVICE WITH A STOPPER LAYER STRUCTURE - Electroluminescent (EL) devices structures are provided comprising a hot electron stopper layer structure to capture hot electrons and dissipate their energy, thereby reducing damage to the transparent conducting oxide (TCO) layer and reducing other hot electron effects, such as charging effects, which impact reliability of EL device structures. The stopper layer structure may comprise a single layer or multiple layers provided between the TCO electrode layer and the emitter structure, and may also function to reduce diffusion or chemical interactions between the TCO and the emitter layer structure. Optionally, stopper layers may also be provided within the emitter structure. Suitable stopper layer materials are wideband gap semiconductors or dielectrics, preferably transparent at wavelengths emitted by the EL device characterized by high impact ionization rates, and/or high relative permittivity relative to adjacent layers of the emitter structure. | 2009-05-21 |
20090128030 | ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - A solid sealing method of an organic EL display device is provided which effectively prevents influences of moisture and reduces manufacturing cost. A mother sealing sheet ( | 2009-05-21 |
20090128031 | AC, RF or pulse excited microdischarge device and array - An AC, rf, or pulse-excited microdischarge device and array are provide by the invention. A preferred array includes a substrate. A plurality of microdischarge cavities that contain discharge medium are in the substrate. A transparent layer seals the discharge medium in the microdischarge cavites. Electrodes stimulate the discharge medium. The microdischarge cavities are physically isolated from the electrodes by dielectric and arranged relative to the electrodes such that ac, rf, or pulsed excitation applied to the electrodes stimulates plasma excitation of the discharge medium. The microdischarge cavities are sized to produce plasma within the microdischarge cavities. | 2009-05-21 |
20090128032 | Plasma display panel and green phosphor for the same - A green phosphor for a PDP includes a BAM based green phosphor, and a passivation layer on the BAM based green phosphor, the passivation layer including a metal oxide. The green phosphor increasing lifespan and discharge stability of the PDP. | 2009-05-21 |
20090128033 | Plasma Discharge Pixel That Provides a Plurality of Discharge Columns - There is provided a plasma display. The plasma display includes a pixel that, in turn, includes (a) a region for hosting a discharge of a gas, (b) a column electrode, (c) a row electrode, perpendicular to the column electrode, for providing a voltage to initiate the discharge, wherein the row electrode has a first protrusion and a second protrusion, and (d) a gap, between the first and second protrusions, having a width that separates the first protrusion from the second protrusion, wherein the gap is situated in the region. | 2009-05-21 |
20090128034 | 3D Video Cube - The present invention is a novel, high resolution, color, three-dimensional (3-D) volumetric display system for dynamic images—the video cube. The video cube consists of an air-tight glass cube filled with a gas mixture and multiple planes of thin wires arranged in alternating orthogonal layers. These wires may be set at voltage potentials capable of producing a glow discharge at the intersection of pairs of wires. Using a computer capable of storing dynamic image data and electronic controllers capable of energizing pairs of wires appropriately at the proper time 3-D dynamic images may be formed from multiple glows between excited wire pairs. The video cube may be used to display complex real-time information from computers and other digital processors with high accuracy for unlimited number of simultaneous unaided observers. | 2009-05-21 |
20090128035 | PLASMA DISPLAY PANEL - A plasma display panel (PDP) with improved address voltage margin and reduced noise brightness such as discharge light or background light during an address discharge. The PDP includes a plurality of barrier ribs between a front substrate and a rear substrate to define a plurality of main discharge spaces and a plurality of auxiliary discharge spaces along a stepped surface of the barrier ribs. The auxiliary discharge spaces provide a shorter discharge path than the main discharge spaces. Address electrodes are provided on the rear substrate for generating address discharges together with the scan electrodes on the front substrate at locations adjacent to the auxiliary discharge spaces. Phosphor layers are respectively formed in the main discharge spaces, and a discharge gas is injected in the main discharge spaces and the auxiliary discharge spaces. | 2009-05-21 |
20090128036 | PLASMA DISPLAY PANEL - A plasma display panel (PDP) having high driving efficiency obtained by improving an address voltage margin; having high image quality obtained by removing noisy brightness such as discharge light generated when an address discharge occurs or background light; and suitable for an image display with high efficiency and high resolution. The PDP includes a plurality of first barrier ribs between a first substrate and a second substrate, the first barrier ribs defining a plurality of unit cells; and a plurality of second barrier ribs dividing each of the unit cells into a main discharge space and an auxiliary discharge space. A row of the auxiliary discharge spaces is adjacent and between two rows of the main discharge spaces. The PDP also includes a phosphor layer in the main discharge spaces; and a plurality of grooves in the second barrier ribs between the main discharge spaces and the auxiliary discharge spaces. | 2009-05-21 |
20090128037 | Plasma display panel and manufacturing method of same - A plasma display panel (PDP) includes front and rear substrates spaced apart and facing each other, a plurality of display electrodes along a first direction on the front substrate, a plurality of address electrodes along a second direction on the rear substrate, the second direction crossing the first direction, a dielectric layer on the rear substrate to cover the address electrodes, barrier ribs between the front and rear substrates to define a plurality of discharge cells, a bottom surface of the barrier ribs being on the dielectric layer, and a phosphor layer on the dielectric layer, at least one portion of the phosphor layer being arranged between the dielectric layer and the bottom surface of the barrier ribs. | 2009-05-21 |
20090128038 | Light-emitting discharge tube, method of fabricating the same, and protective film forming apparatus - A light-emitting discharge tube in which an outer wall surface of a glass tube is made less susceptible to flaws by forming a protective film on the outer wall surface of the glass tube, a method of fabricating the light-emitting discharge tube, and a protective film forming apparatus are provided. The light-emitting discharge tube defines light-emitting discharge regions by a plurality of external electrodes. The outer wall surface of the light-emitting discharge tube (the glass tube) is coated with the protective film (a metal film, a conductive metal oxide film, an insulating metal oxide film, or an organic film). | 2009-05-21 |
20090128039 | Discharge Lamp with Electrode Made Of Tungsten Alloy Comprising < 3 Wt.% Of Rhenium - The invention relates to a high-pressure gas discharge lamp ( | 2009-05-21 |
20090128040 | SYSTEMS AND METHODS FOR WAVEGUIDES - In various representative aspects, the present invention provides systems and methods for waveguides. A waveguide may comprise a housing and a plurality of reflective surfaces configured to couple to the housing. The housing may be configured to couple to an electromagnetic wave beam generator. The electromagnetic wave beam generator may, be configured to provide a wave beam having a polarization substantially similar to its initial polarization. At least one of the plurality of reflective surfaces may be configured to convert the mode of an incident wave beam. The plurality of reflective surfaces may be configured for alignment in a waveguide. | 2009-05-21 |
20090128041 | Microwave Plasma Generation Method and Microwave Plasma Generator - A microwave plasma generator in which the generating amount of radicals can be regulated easily with higher reaction efficiency while reducing gas consumption. The microwave plasma generator comprises an outer conductor ( | 2009-05-21 |
20090128042 | GOLD OR SILVER PLATED WIRE LEADS ON CHRISTMAS LIGHTS - The electrical wire leads of miniature lights or LED's in a series-wired Christmas light string are gold or silver plated to resist corrosion. The wire leads of any shunt components used in the sockets of the light string can also be plated for corrosion resistance. | 2009-05-21 |
20090128043 | LIGHT SENSING APPARATUS AND DISPLAY DEVICE THEREOF - A light sensing apparatus and a display device thereof are provided. The light sensing apparatus comprises a filtering device and a light sensing device. The filtering device filters off a part of the ambient light and outputs the other part of the ambient light. The light sensing device outputs a sensing signal according to the other part of the ambient light. | 2009-05-21 |
20090128044 | DAYLIGHT TRACKING SIMULATOR AND/OR PHOTOTHERAPY DEVICE - A fluorescent or light emitting diode-based system for generating light flux. The system comprises a lamp comprising at least one light source for illuminating an area. At least one of the at least one light source is selected from the group comprising at least one of a fluorescent light source or an LED light source. The lamp also comprises a light source controller electrically coupled with the light source and arranged to control the spectral output of the light source. The lamp also comprises a power supply and a switch electrically coupled between the lamp and the power supply and arranged to control the supply of power from the power supply to the lamp. | 2009-05-21 |
20090128045 | Electronic Circuits for Driving Series Connected Light Emitting Diode Strings - Electronic circuits provide an error signal to control a regulated output voltage signal generated by a controllable DC-DC converter for driving one or more series connected strings of light emitting diodes. | 2009-05-21 |
20090128046 | Rectifier module for LED lamp strings - A rectifier module is provided for simultaneous use with a plurality of light-emitting diode (LED) lamp strings. The rectifier module includes an extension cable having first and second ends to which first and second connectors are mounted and a casing mounted to the extension cable and including therein an electronic circuit. The electronic circuit includes a rectifier element, which can be a diode based circuit or a bridge rectifier, to which a resistor and a capacitor are electrically connected. The resistor can be a variable resistor to allow for manual adjustment. The casing can be mounted to a middle portion of the extension cable or, if desired, can be integrated with either one of the connectors. | 2009-05-21 |
20090128047 | BACKLIGHT ASSEMBLY, DISPLAY APPARATUS HAVING THE SAME AND CONTROL METHOD THEREOF - A backlight assembly with a light source unit, includes: a drive signal generator which generates a switching drive signal on the basis of a predetermined drive frequency and a feedback power fed back from the light source unit; a switching unit which outputs a power to the light source unit in response to the switching drive signal; and a controller which decreases the drive frequency if the feedback power is higher than a predetermined critical value. | 2009-05-21 |
20090128048 | Organic light emitting diode power converter - A power converter circuit converts an AC line signal to a DC signal for powering an organic light emitting diode. The circuit uses only capacitive elements to limit current to the LED. Inductive and resistive elements are not included in the circuit to limit current. The absence of inductive components eliminates electromagnetic interference generated by the circuit and avoids circuit components magnetically coupling to one another. The circuit includes complementary MOSFET switches that alternately conduct to convert the AC line voltage into a DC current for powering the LED. | 2009-05-21 |
20090128049 | DISCHARGE LAMP LIGHTING APPARATUS - A discharge lamp lighting apparatus includes a switch circuit for DC/AC converting, a discharge lamp connected to a secondary winding of a transformer, a current detector detecting an AC output current of the discharge lamp, an error amplifier outputting an error signal to a detected current, a control circuit generating control signals that turn on/off the switching elements in such a way as to control the AC output current at a predetermined value, and a time division signal generator generating a time division signal at the start of an ON/OFF operation of the switching elements, wherein the time division signal delays a change in a burst dimming signal or has a predetermined inclination on the burst dimming signal. The error amplifier changes the error signal according to the time division signal from the time division signal generator. | 2009-05-21 |
20090128050 | Circuit Unit - The invention relates to a circuit unit for a semiconductor unit which produces radiation, with a forward voltage U | 2009-05-21 |
20090128051 | Apparatus and method of driving lamp of liquid crystal display device - A method of driving a lamp of a liquid crystal display device includes generating a control signal; generating a first drive signal using the control signal; generating a second drive signal by shifting a voltage level of the first drive signal; selectively outputting one of a high potential supply voltage and a low potential supply voltage in response to the second drive signal; transforming the selectively outputted voltage; and supplying the transformed voltage to a lamp. | 2009-05-21 |
20090128052 | Extended Life LED Fixture with Distributed Controller and Multi-Chip LEDS - An LED fixture includes multiple LED drivers and a multi-chip LED package so that the lifetime of the fixture is a multiple of the lifetime of a conventional fixture that uses only a single LED driver. A distributed controller activates and deactivates the LED drivers so that different subsets of LEDs within the LED package are driven sequentially. An optional multi-chip LED driver concurrently drives multiple subsets of LEDs that were previously driven by the LED drivers. | 2009-05-21 |
20090128053 | Apparatus and Technique for Modular Electronic Display Control - The present invention discloses apparatus and techniques for modular backlighting control of a display. The display includes a number of strings of LEDs. The display is divided into several sections, and each section includes one or more strings of LEDs. A local controller is assigned to each section. The local controller receives feedback signals from the strings of LEDs in its sections and controls the drive voltages and drive currents of those strings. The local controllers communicate with each other and also with the main system controller. | 2009-05-21 |
20090128054 | Extended Life LED Fixture with Central Controller and LED Lamps - An LED fixture includes multiple LED drivers and multiple LED lamps so that the lifetime of the fixture is a multiple of the lifetime of a conventional fixture that uses only a single LED driver. A central controller activates and deactivates the LED drivers so that the different LED lamps are driven sequentially. An optional multi-lamp LED driver concurrently drives multiple LED lamps that have been previously driven by the LED drivers. | 2009-05-21 |
20090128055 | APPARATUS FOR DRIVING LIGHT EMITTING ELEMENT - Provided is an apparatus for driving a light emitting element. The apparatus includes a power unit, a light emitting element array, a constant-current circuit unit, and a voltage limiting circuit unit. The power unit supplies driving power. The light emitting element array includes a plurality of light emitting elements connected in series between an anode terminal connected to the power unit and a cathode terminal. The constant-current circuit unit maintains a constant current flowing through the light emitting element array according to a first tuning voltage. The voltage limiting circuit unit is connected between the cathode terminal of the light emitting element array and the constant-current circuit unit, and divides a total voltage applied between the cathode terminal of the light emitting element array and a ground according to a second tuning voltage to limit a voltage applied to the constant-current circuit unit below a predetermined voltage. | 2009-05-21 |
20090128056 | LIGHT-EMITTING DEVICE - A light-emitting device includes a plurality of light-emitting units, a plurality of non-address-embedded brightness control integrated circuits (ICs) and at least one system control unit. Each of the brightness control ICs is electrically connected to each of the light-emitting units. The system control unit addresses each of the brightness control ICs by outputting at least one addressing signal through an external circuit, and writes a brightness control signal to each of the brightness control ICs. Each brightness control IC controls each of the light-emitting units according to the received brightness control signal. | 2009-05-21 |
20090128057 | FLUORESCENT LAMP AND BALLAST WITH BALANCED ENERGY RECOVERY PUMP - A fluorescent lamp formed of a power control unit and a fluorescent lamp assembly. The lamp assembly includes a fluorescent tube having filaments and including inductive and capacitive components connect to the filaments forming a resonant network. The power control unit includes an input power unit, an energy recovery pump, a bulk capacitor and a lamp driver including a half-bridge power stage and a half-bridge driver. The input power unit provides an input voltage, includes a lamp driver for switching a high DC voltage with a high switching frequency to provide a high-frequency driving voltage for driving the resonant network. The energy recovery pump is balanced so as not to disturb the resonance of the network and so as to enable recovery and transfer of energy to the bulk capacitor and thereby establish a high luminous efficiency for the fluorescent lamp. | 2009-05-21 |