110 results about "Light-emitting diode" patented technology

Methods and apparatus for executing a lighting program to control a plurality of light emitting diodes (LEDs) in response to at least one characteristic of an audio input. In one embodiment, the audio input is digitally processed to determine the at least one characteristic. In other embodiments, control signals for the LEDs are generated in response to a timer and/or input from a user interface, as well as in response to the at least one characteristic of the audio input. In another embodiment, the control signals for the LEDs are generated by a same computer that processes the audio input to transmit signals to speakers to audibly play the audio input. In a further embodiment, a GUI is provided to assist in authoring the lighting program. In another embodiment, the audio signal is processed before being played back. In a further embodiment, the lighting program anticipates changes in the audio input.

A display apparatus including a light emitting diode part including a plurality of regularly arranged light emitting diodes, and a TFT panel part configured to drive the light emitting diode part. The light emitting diode part includes a transparent electrode, the light emitting diodes regularly disposed on a first surface of the transparent electrode and electrically connected to the transparent electrode, a plurality of first reflective electrodes disposed at sides of the light emitting diodes, surrounding the light emitting diodes, and electrically connected to the transparent electrode, and a plurality of second reflective electrodes electrically connected to the light emitting diodes, respectively, and reflecting light emitted from the light emitting diodes.

A power and control module for a Power over Ethernet (PoE) light emitting diode (LED) lighting system includes an input channel for receiving PoE input power from a PoE switch, an output channel for providing PoE output power to a plurality of LED light fixtures and a power transfer unit coupled between the input and output channel for providing the PoE input power and/or a secondary input power to the output channel as the PoE output power. A secondary power input unit selectively provides secondary power to the power transfer unit. A processor is controls the power transfer unit to adjust an amount of PoE input power and secondary input power to obtain the PoE output power. Secondary input power can be an emergency power source during line power outages. Secondary input power could be a renewable energy power source used preferentially to the PoE input power when available.

The present invention relates generally to both a system and method for visually (e.g., via a video-based system or some other visual system) monitoring one or more objects where such objects are obscured by a high intensity light source such as a plasma, flame, or welding arc. In one embodiment, a system in accordance with the present invention comprises a digital camera, at least one light emitting diode (LED) light source, and at least one filter. In another embodiment, a system in accordance with the present invention comprises a digital camera, at least one light emitting diode (LED) light source, and at least one filter selected from a notch filter, a neutral density filter, or combinations thereof. Additionally, the system of the present invention can further include software designed to process, interpret and/or collect various data captured by the visual monitoring, or, imaging, system of the present invention.

A power system for an organic light emitting diode (OLED) display includes a power supplier and a power source controller. The power supplier respectively supplies a first power source voltage and a second power source voltage to first and second power source voltage application lines. The power source controller calculates a reference power source voltage corresponding to a maximum average grayscale using a distribution for each grayscale of first to third image data, models each voltage drop of the first and second power source voltages for first to third subpixels, and reflects the voltage drop to the reference power source voltage to change the second power source voltage.

A multiple color multi-function light bar for a law enforcement vehicle, emergency vehicle, tow truck or the like. The light bar includes a plurality of light emitting diodes aligned in a single row. Each of the plurality of light emitting diodes are configured to emit two different colors of light through a single optical lens. Advantageously, the light bar is capable of producing a single color light pattern and a dual color light pattern based upon the particular emergency or traffic control situation encountered by an operator of the vehicle.

The invention provides a mixed-light-source liquid-crystal projection light engine system. The portable liquid-crystal projection light engine system is composed of a light source module, a polarized light management module, an image signal module and a projection lens, wherein the light source module consists of a high-brightness laser, an incoherent LED (Light-Emitting Diode) solid light source, a fluorescent device and the like. The output brightness of the projection system is greatly increased, the light source module is safe and environmentally friendly, and projected images have bright color and clear quality. The polarized light management module consists of a color-combining prism, a polarization beam splitter (PBS), a polarization color-combining device and the like, and different polarization states of three-primary-color mixed light are integrated into the same polarized light to be emitted to the image signal module. The image signal module is a monolithic reflection type liquid crystal light modulation device, and image signals are loaded to the three-primary-color polarized light in sequence according to the image signals corresponding to primary colors. The projection lens is used for projecting the light carrying the image signals onto a screen.

An organic light emitting element including: a first electrode; a bump partially covering an end of the first electrode and having an island shape, which has a thickness larger than a thickness of the first electrode; an organic emission layer on the first electrode and the bump; and a second electrode on the organic emission layer.

The invention provides a two-dimensional double perovskite material. The composition formula of the two-dimensional double perovskite material is AnMIIIMIX8, wherein A is organic amine; MIII is a trivalent metal element; MI is a monovalent metal element; and X is halogen. The two-dimensional double perovskite material has certain advantages of methylamine lead-iodine perovskite and lead-free double perovskite. The material is lead-free and environmentally friendly, has very good light stability and good chemical stability, and is unlikely to deteriorate in air. The material has a suitable andadjustable light absorption band gap, and more importantly can be used for preparing a film at a low temperature by a solution method. The advantages provide basis for the application of the materialin the photovoltaic fields such as solar cells, optical detectors and light-emitting diodes.

The embodiment of the invention provides an organic light emitting display panel and an organic light emitting display device, relates to the technical field of display, and improves the problem of display unevenness caused by increasing the light emitting brightness of an organic light emitting element in a fingerprint identification area in a fingerprint identification stage. The organic light emitting display panel comprises a substrate basal plate; a display area comprises a plurality of organic light emitting elements located on one side of the substrate basal plate and having at least three different colors; the display area comprises a fingerprint identification area and a non-fingerprint identification area, and the fingerprint identification area is provided a fingerprint identification unit; the organic light emitting elements comprise a first organic light emitting element and a second organic light emitting element; the first organic light emitting element is disposed in the fingerprint identification area; the second organic light emitting element is disposed in the non-fingerprint identification area; the first organic light emitting element and the second organic light emitting element emit light of the same color; the organic light emitting elements comprise light emitting areas; and an area S1 of the light emitting area of the first organic light emitting element is larger than an area S2 of the light emitting area of the second organic light emitting element.

A solar powered LED portable light tower. A solar powered LED portable light tower may comprise: one or more photovoltaic modules, an adjustable masthead, one or more lamps, one or more batteries, an inverter, a controller, and a base. The lamps may be light emitting diodes. The controller may be configured to turn on and off and dim said one or more lamps, and preferably comprises a motion sensor. The portable light tower may also comprise a concrete ballast, fork lift option, and/or a trailer option.

The light emitting diode structure includes a substrate, a first electricity semiconductor layer formed on the substrate, a light-emitting layer formed on the first electricity semiconductor layer, a second electricity semiconductor layer formed on the light-emitting layer, a barrier layer formed on the second electricity semiconductor layer, and a contact layer formed on the barrier layer.

Disclosed is a polarized light emitting diode (LED) capable of emitting polarized light in the front direction thereof by forming a first grating layer on a quantum well layer and forming a second grating layer on a substrate. The polarized LED includes a nitride thin film formed on a substrate, a quantum well layer formed on the nitride thin film, a first grating layer formed on the quantum well layer to allow a part of light generated from the quantum well layer to pass through the first grating layer and to reflect remaining light, and a second grating layer formed on the substrate to rotate the light reflected from the first grating layer such that the reflected light passes through the first grating layer.

The invention relates to a preparation method of solid carbon dot fluorescent powder with high quantum yield. The preparation method comprises the following steps: weighing raw materials according tothe following constituents in parts by weight: 0.25 to 1 part of potassium hydrogen phthalate, 0.5 part of sodium azide and 0.25 to 1 part of boric acid; mixing the raw materials, then dissolving themixture in a formaldehyde solution ultrasonically, putting the mixed solution in a microwave oven for heating at the power of 225 to 750 W for 4 to 10 min, and completely evaporating the liquid at theend of reaction to obtain white powder which is nitrogen and boron-doped carbon dots (NBCDs). The preparation method is low in cost, high in preparation speed and easy to operate; the quantum yield (QY) of the prepared solid luminous NBCSs is extremely high, and the absolute solid luminous QY of the NBCSs is 67.7 percent.

While suppressing the frequency of a signal line driver circuit, a blur of a moving image of a light-emitting device using a light-emitting transistor can be prevented, without reducing a frame frequency. A switching element is provided in a path of a current which flows between a source and a drain of a light-emitting transistor, and the light-emitting transistor is made not to emit light by turning off the switching element, whereby pseudo-impulse driving is performed. Switching of the switching element can be controlled by a scan line driver circuit. In a specific structural example, the light-emitting device includes, in a pixel, a light-emitting transistor, a first switching element which controls supply of a potential of a video signal to a gate of the light-emitting transistor, and a second switching element which controls a current which flows between a source and a drain of the light-emitting transistor.

A light bulb includes a glass bulb having a top part and a bottom part which is connected to the top part. A light unit is located in a space defined between the top and bottom parts. The light unit has a transverse circuit board and at least one upright circuit board. Multiple Light Emitting Diodes are connected to the top surface and the bottom surface of the transverse circuit board. The at least one upright circuit board is connected to the top surface of the transverse circuit board. Multiple Light Emitting Diodes are connected to the outside surface of the at least one upright circuit board.

The light beams from the Light Emitting Diodes go through the glass bulb and toward different directions.

An organic light emitting display includes: pixels located at crossing regions between scan lines and data lines; a first control line and a second control line commonly coupled to the pixels; a control line driver configured to supply a first control signal to the first control line for a reset period and to supply a second control signal to the second control line during the reset period and a compensation period. Each pixel includes: an organic light emitting diode; a first transistor configured to control an amount of current supplied from a first power source coupled to a first electrode to a second power source via the organic light emitting diode; a second transistor configured to be turned on when the second control signal is supplied; and a fourth transistor configured to supply an initial voltage to a second electrode of the first transistor when the first control signal is supplied.

An LED assembly that includes optics and optical arrangements for light emitting diodes (LEDs). In some embodiments, a reflector is provided within a void between the lens and the LED. This reflector can reflect light emitted by the LED in a non-preferred direction back toward the preferred direction. In other embodiments, an optical element is formed or otherwise provided in the lens cavity and shaped so that, when the lens is positioned above the LED, the refractor bends the emitted light in a preferred direction. In some embodiments, both a reflector and optical element are provided in the LED assembly to control the directionality of the emitted light. Such embodiments of the invention can be used to increase the efficiency of an LED by ensuring that generated light is being directed to the target area of choice.

The invention is related to a structure of a light emitting diode lamp tube, comprising: a lamp tube housing; a circuit board; a supporting seat; a lamp bar; a second connecting seat; and a lamp shade. The circuit board is positioned in the accommodation space of the lamp tube housing, the supporting seat is slidingly combined with convex lugs of the side cover of the lamp tube housing to cover the accommodation space; the supporting seat has an opening, which allows the first connecting seat of the circuit board to be exposed by the opening. The lamp bar is positioned on the supporting seat; the second connecting seat is electrically connected with the lamp bar and the first connecting seat, and the lamp shade is combined with the lamp tube housing to form the exterior of the lamp tube. By hiding the circuit board used for power conversion in the lamp tube housing, electronic components on the circuit board can carry out heat radiation by utilizing the lamp tube housing; then, the service life of the light emitting diode lamp tube can be prolonged.

An improved roadside barrier marker structure, mainly comprises two triangular marker bodies, and a semicircular groove being disposed on one of the marker bodies with its bottom connected to a base, and a cylindrical cylinder disposed at the center of the base; a cylindrical cylinder disposed on the upper section of another marker body, and a plurality of light emitting diodes (L.E.D.) arranged in partitions, and a base being connected to its bottom having a battery base and a control circuit; an L.E.D. control circuit for coupling to the surface of marker body further comprising a magnetic spring switch; a rectangular magnet, embedded into the cylindrical cylinder at the base of the marker body; with both marker bodies passing through the groove, the cylinder being fixed to the bolt cylinder, such that the bases of the marker bodies being coupled in a cross overlapping. When the present invention is used during car trouble, the system will automatically light up the blinking L.E.D. with the sensing of magnetic switch by the magnet in order to improve the warning effect of the roadside barrier marker.

The invention discloses a method for synthesizing red fluorogold nano-clusters through photoinduction and application thereof and belongs to the technical field of fluorogold nano-clusters. The methodcomprises the following steps: under a room temprature condition, adding mono(6-mercapto-6-deoxy)-beta-cyclodextrin into chloroauric acid and reacting at a stirring speed of 550 to 600 rmp until a solution becomes colorless, so as to obtain a solution A; slowly adding silver nitrate into the solution A and reacting at the stirring speed of 550 to 600 rmp for 9 to 10 min; then adding lipoic acid to obtain a mixed system B; reacting at the stirring speed of 550 to 600 rmp for 9 to 10 min; then regulating the pH (Potential of Hydrogen) of the solution to 3.5 to 4.5 by adopting hydrochloric acid,so as to obtain a solution B; putting the solution B under LED (Light Emitting Diode) lamplight and reacting for 85 to 90 min, so as to obtain a light yellow solution, i.e., the red fluorogold nano-clusters Au(0)@Au(I)-6-SH-beta-CD. According to the method disclosed by the invention, a photo-reduction method takes mercapto-beta cyclodextrin as a coating agent to synthesize gold nano-clusters; anda synthesis method is simple and can be used for selectively detecting silver ions.

The invention discloses an area light source equipment, it includes at least a light emitting diode, at least a reflector and an optical leading board, which at least includes an incident face, an emergent face, an underside which is according to the emergent face, and several flanks. The reflector is a groove with two lateral walls, it is located on one side of the optical leading board and clamp with it to form a cavity to contain the light emitting diode.

The invention relates to a gallium nitride semiconductor film, a gallium nitride-based light emitting dioxide and a corresponding preparation method therefor. The preparation method for the gallium nitride semiconductor film comprises the following steps of: bombarding a gallium-containing target and a substrate by using double ion sources, respectively, and filling the primary ion source with argon to generate argon ion beams to bombard the gallium-containing target and generate sputtering particles which are deposited on the substrate; and filling the secondary ion source with ammonia or nitrogen to generate nitrogen ions to bombard the surface of the substrate, wherein the nitrogen ions are combined with the sputtering particles deposited on the surface of the substrate to generate the gallium nitride semiconductor film. According to the invention, the primary ion source generates the argon ions to bombard the gallium-containing target and the nitrogen ions generated by the secondary ion source generate gallium nitride by virtue of a chemical reaction, and the nitrogen ions are directly supplemented to the surface of the substrate by way of shallow injection, so that the content of element nitrogen in the gallium nitride semiconductor film can be effectively improved, and the proportioning error of the element nitrogen and the element gallium is overcome, and the prepared thin is uniform in thickness and high in precision.