Patent application number | Description | Published |
20120061711 | LIGHT EMITTING DIODE WITH INDEPENDENT ELECTRODE PATTERNS - A light emitting diode includes a substrate, an N-doped layer disposed on the substrate, a plurality of cathodes disposed between the N-doped layer and the substrate, an active layer disposed on the N-doped layer, a P-doped layer disposed on the active layer, and a plurality of anodes disposed on the P-doped layer. The cathodes are electrically connected to the N-doped layer, and the patterns of the cathodes are disconnected from each other. The anodes are electrically connected to the P-doped layer, and the patterns of the anodes are disconnected from each other. Each cathode and a corresponding anode form a loop, and each loop is an independent loop. | 03-15-2012 |
20130320363 | SAPPHIRE SUBSTRATE CONFIGURED TO FORM LIGHT EMITTING DIODE CHIP PROVIDING LIGHT IN MULTI-DIRECTIONS, LIGHT EMITTING DIODE CHIP, AND ILLUMINATION DEVICE - A sapphire substrate configured to form a light emitting diode (LED) chip providing light in multi-directions, a LED chip and an illumination device are provided in the present invention. The sapphire substrate includes a growth surface and a second main surface opposite to each other. A thickness of the sapphire substrate is thicker than or equal to 200 micrometers. The LED chip includes the sapphire substrate and at least one LED structure. The LED structure is disposed on the growth surface and forms a first main surface where light emitted from with a part of the growth surface without the LED structures. At least a part of light beams emitted from the LED structure pass through the sapphire substrate and emerge from the second main surface. The illumination device includes at least one LED chip and a supporting base. The LED chip is disposed on the supporting base. | 12-05-2013 |
20130322081 | LIGHT EMITTING ELEMENT AND ILLUMINATION DEVICE THEREOF - A light emitting element includes a transparent substrate and a plurality of light emitting diode (LED) chips. The transparent substrate has a support surface and a second main surface disposed opposite to each other. At least some of the LED chips are disposed on the support surface and form a first main surface where light emitted from with a part of the support surface without the LED chips. Each of the LED chips includes a first electrode and a second electrode. Light emitted from at least one of the LED chips passes through the transparent substrate and emerges from the second main surface. An illumination device includes the light emitting element and a supporting base. The light emitting element is disposed on the supporting base, and an angle is formed between the light emitting element and the supporting base. | 12-05-2013 |
20140103369 | ILLUMINATION DEVICE - A semiconductor light emitting element includes a transparent substrate and a plurality of light emitting diode (LED) chips. The transparent substrate has a support surface and a second main surface disposed opposite to each other. At least some of the LED structures are disposed on the support surface and form a first main surface where light emitted from with a part of the support surface without the LED structures. Each of the LED structures includes a first electrode and a second electrode. Light emitted from at least one of the LED structures passes through the transparent substrate and emerges from the second main surface. An illumination device includes the semiconductor light emitting element and a supporting base. The semiconductor light emitting element is disposed on the supporting base, and an angle is formed between the semiconductor light emitting element and the supporting base. | 04-17-2014 |
Patent application number | Description | Published |
20090189172 | Light emitting diode with higher illumination efficiency - A light emitting diode (LED) with higher illumination efficiency is revealed. The LED includes a LED chip and an optical layer arranged on the bottom of the LED chip. The optical layer is a light-guiding layer, a light reflective layer or an energy-conversion layer that increases light emitting efficiency of the LED. Furthermore, a rough layer is disposed between the LED chip and the optical layer so as to increase surface area of the LED chip. Thus light emitted from the LED chip enters the optical layer more easily and the illumination efficiency of the LED is increased. | 07-30-2009 |
20090267095 | Light-Emitting Device with Reflection Layer and Structure of the Reflection Layer - The present invention provides a light-emitting device with a reflection layer and the structure of the reflection layer. The reflection layer comprises a variety of dielectric materials. The reflection layer includes a plurality of dielectric layers. The materials of the plurality of dielectric layers have two or more types with two or more thicknesses, except for the combination of two material types and two thicknesses, for forming the reflection layer with a variety of structures. The reflection layer according to the present invention can be applied to light-emitting diodes of various types to form new light-emitting devices. Owing to its excellent reflectivity, the reflection layer can improve light-emitting efficiency of the light-emitting devices. | 10-29-2009 |
20100078667 | LIGHT-EMITTING DIODE - The present invention relates to a light-emitting diode (LED).The LED comprises an LED die, one or more metal pads, and a fluorescent layer. The characteristics of the present invention include that the metals pads are left exposed for the convenience of subsequent wiring and packaging processes. In addition, the LED provided by the present invention is a single light-mixing chip, which can be packaged directly without the need of coating fluorescent powders on the packaging glue. Because the fluorescent layer and the packaging glue are not processed simultaneously and are of different materials, the stress problem in the packaged LED can be reduced effectively. | 04-01-2010 |
20100078671 | Nitride based semiconductor light emitting device - A nitride based semiconductor light emitting device is revealed. The light emitting device includes a light emitting epitaxial layer, a P-type electrode and a N-type electrode. The P-type electrode and the N-type electrode are disposed on the light emitting epitaxial layer. The light emitting device features on that the N-type electrode is arranged on the inner side of the P-type electrode. The P-type electrode extends toward the N-type electrode along the edge of the light emitting epitaxial layer and the N-type electrode extends inward along the inner side of the P-type electrode. By means of the electrode pattern with special design, the light emitting area of the light emitting device is increased. | 04-01-2010 |
20100081220 | METHOD FOR MANUFACTURING LIGHT-EMITTING DIODE - The present invention relates to a light-emitting diode (LED) and a method for manufacturing the same. The LED comprises an LED die, one or more metal pads, and a fluorescent layer. The characteristics of the present invention include that the metals pads are left exposed for the convenience of subsequent wiring and packaging processes. In addition, the LED provided by the present invention is a single light-mixing chip, which can be packaged directly without the need of coating fluorescent powders on the packaging glue. Because the fluorescent layer and the packaging glue are not processed simultaneously and are of different materials, the stress problem in the packaged LED can be reduced effectively. | 04-01-2010 |
20100270566 | LIGHT EMITTING DEVICE WITH SELECTIVE REFLECTION FUNCTION - A light emitting device with selective reflection function being applied to general light emitting device and AC-type light emitting device is revealed. The light emitting device includes at least one vertical light emitting unit, at least one selective reflection layer and a phosphor layer. The selective reflection layer is disposed over the vertical light emitting unit and the phosphor layer is arranged over the selective reflection layer. Thus first colored light from the vertical light emitting unit passes the selective reflection layer and then to be converted into second colored light by the phosphor layer. The selective reflection layer reflects the second colored light while the first colored light is mixed with the second colored light to form mixing colored light. By the selective reflection layer that prevents the second colored light emitting into the light emitting unit, the lighting efficiency of the light emitting device is enhanced. | 10-28-2010 |
20100270570 | LIGHT EMITTING ELEMENT - The present invention provides a light emitting element comprising a first substrate, a light emitting unit disposed on the first substrate, at least a selective reflection layer disposed on an emitting side of the light emitting unit so that a light of a first color emitted from the light emitting unit passes through the selective reflection layer, and a fluorescent layer disposed on the emitting side of the light emitting unit and converting the light of the first color passing therethrough into a light of a second color, wherein a light of a mixed color is formed by the lights of the first and second color and only the light of the second color is reflected by the selective reflection layer. | 10-28-2010 |
Patent application number | Description | Published |
20140320183 | PLL FREQUENCY SYNTHESIZER WITH MULTI-CURVE VCO IMPLEMENTING CLOSED LOOP CURVE SEARCHING USING CHARGE PUMP CURRENT MODULATION - A phase-locked loop circuit using a multi-curve voltage-controlled oscillator (VCO) having a set of operating curves, each operating curve corresponding to a different frequency range over a control voltage range. The phase-locked loop circuit includes a phase and frequency detector driving a charge pump and a digital control circuit configured to generate a curve select signal using a closed loop curve search operation to select one of the operating curves in the multi-curve VCO, the selected operating curve being used by the VCO to generate an output signal with an output frequency being equal or close to a target frequency of the phase-locked loop. In one embodiment, the digital control circuit increases the charge pump current above a nominal current value during the closed loop curve search operation and set the charge pump current to the nominal current value after an operating curve is selected. | 10-30-2014 |
20140320184 | PLL FREQUENCY SYNTHESIZER WITH MULTI-CURVE VCO IMPLEMENTING CLOSED LOOP CURVE SEARCHING - A phase-locked loop circuit using a multi-curve voltage-controlled oscillator (VCO) having a set of operating curves, each operating curve corresponding to a different frequency range over a control voltage range. The phase-locked loop circuit includes a digital control circuit configured to generate a curve select signal using a closed loop curve search operation to select one of the operating curves in the multi-curve VCO, the selected operating curve being used by the VCO to generate an output signal with an output frequency being equal or close to a target frequency of the phase-locked loop. In one embodiment, the digital control circuit implements a binary jump method and an operating curve is selected when the operating curve has an output frequency meeting the target frequency with the control voltage being within a first voltage range being a narrowed and centered voltage range within the control voltage range. | 10-30-2014 |
20150077164 | PLL FREQUENCY SYNTHESIZER WITH MULTI-CURVE VCO IMPLEMENTING CLOSED LOOP CURVE SEARCHING USING CHARGE PUMP CURRENT MODULATION - A phase-locked loop circuit using a multi-curve voltage-controlled oscillator (VCO) having a set of operating curves, each operating curve corresponding to a different frequency range over a control voltage range. The phase-locked loop circuit includes a phase and frequency detector driving a charge pump and a digital control circuit configured to perform a closed loop curve search operation to select one of the operating curves in the multi-curve VCO and to perform a curve tracking operation using the selected operating curve, the selected operating curve being used by the VCO to generate an output signal with an output frequency being equal or close to a target frequency of the phase-locked loop. In one embodiment, the digital control circuit increases the charge pump current above a nominal current value during the closed loop curve search operation and set the charge pump current to the nominal current during the curve tracking operation. | 03-19-2015 |
Patent application number | Description | Published |
20140072482 | AUTOMATED SYNTHESIS SYSTEM FOR IODINE-123-IBZM NUCLEAR MEDICINE - An automated synthesis system for iodine-123-IBZM nuclear medicine includes a control/display means, a reactant supply means connecting to the control/display means; an adsorption means connecting to the control/display means and to the reactant supply means, an oxidation means connecting the control/display means, the reactant supply means and the adsorption means, a product collection means connecting to the control/display means, the reactant supply means, the adsorption means and the oxidation means; a waste liquid collection means connecting to the control/display means, the adsorption means and the product collection means, and a gas filtration means connecting the control/display means, the oxidation means and the product collection means. This system can automate the processing steps needed for marking, such as oxidation, reduction, neutralization, adsorption, washing and elution etc, and reduce hand operating time, radiation exposure dose, and mistakes and deviations, while stabilizing the product quality, increasing the product yield, and improving the purity. | 03-13-2014 |