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165 results about "Blue emission" patented technology
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Light emitting element and light emitting device
InactiveUS7943925B2Improve light emission efficiencyImprove efficiencyLamination ancillary operationsDischarge tube luminescnet screensHigh concentrationPeak value
A high efficient white emission light emitting element having peak intensity in each wavelength region of red, green, and blue is provided. Specifically, a white emission light emitting element having an emission spectrum that is independent of current density is provided. A first light emitting layer 312 exhibiting blue emission and a second light emitting layer 313 containing a phosphorescent material that generates simultaneously phosphorescent emission and excimer emission are combined. In order to derive excimer emission from the phosphorescent material, it is effective to disperse a phosphorescent material 323 having a high planarity structure such as platinum complex at a high concentration of at least 10 wt % to a host material 322. Further, the first light emitting layer 312 is provided to be in contact with the second light emitting layer 313 at the side of an anode. Ionization potential of the second light emitting layer 313 is preferably larger by 0.4 eV than that of the first light emitting layer 312.
Owner:SEMICON ENERGY LAB CO LTD
Full-color organic display having improved blue emission
ActiveUS20050173700A1Improve luminous efficiencyDecreasing surface emitting areaDischarge tube luminescnet screensStatic indicating devicesColor imageBlue emission
A full-color organic display for displaying a color image, including an array of pixels arranged in repeating patterns, wherein each pixel has red, green, and blue light-emitting subpixels, and wherein each red and green light-emitting subpixel contains only one EL unit, while each blue light-emitting subpixel contains more than one vertically stacked EL unit.
Owner:GLOBAL OLED TECH
Monolithic photovoltaic energy conversion device
InactiveUS20070137698A1Solid-state devicesPhotovoltaic energy generationSemiconductor materialsEngineering
A multijunction, monolithic, photovoltaic (PV) cell and device (600) is provided for converting radiant energy to photocurrent and photovoltage with improved efficiency. The PV cell includes an array of subcells (602), i.e., active p / n junctions, grown on a compliant substrate, where the compliant substrate accommodates greater flexibility in matching lattice constants to adjacent semiconductor material. The lattice matched semiconductor materials are selected with appropriate band-gaps to efficiently create photovoltage from a larger portion of the solar spectrum. Subcell strings (601, 603) from multiple PV cells are voltage matched to provide high output PV devices. A light emitting cell and device is also provided having monolithically grown red-yellow and green emission subcells and a mechanically stacked blue emission subcell.
Owner:ALLIANCE FOR SUSTAINABLE ENERGY
Blue light emitting compound and organic electroluminescent device using the same
ActiveUS20080203905A1Group 4/14 element organic compoundsDischarge tube luminescnet screensBlue emissionDisplay device
A blue light emitting compound and an organic electroluminescent device using the compound are provided. The device exhibits improved color purity of blue emission and excellent life characteristics so as to be used to manufacture a full-color display.
Owner:SFC CO LTD
White organic light emitting diode and method for manufacturing the same
ActiveUS20070099026A1Improve emission efficiencyExtend your lifeDischarge tube luminescnet screensElectroluminescent light sourcesBlue emissionLight-emitting diode
A white organic light emitting diode (OLED) includes an emission layer that includes a blue emission layer and an emission layer excluding blue. The emission layer excluding blue includes a phosphorescent material and a mixture of a hole transporting material and electron transporting material.
Owner:SAMSUNG DISPLAY CO LTD
Organic light-emitting diode display
ActiveUS20090295283A1High resolutionMargin was minimalDischarge tube luminescnet screensLamp detailsBlue emissionDisplay device
An OLED display including: a first substrate; an opposing second substrate; an organic light-emitting unit disposed on a side of the first substrate that faces the second substrate; a driving circuit disposed on a side of the second substrate that faces the first substrate and connected to the organic light-emitting unit; and a filter. The organic light-emitting unit includes that is an anode, a cathode, and an organic emission layer disposed therebetween. The organic emission layer includes a blue emission layer a yellow emission layer. The filter is to convert light from the yellow emission layer into red light and green light.
Owner:SAMSUNG DISPLAY CO LTD
Saturated yellow phosphor converted LED and blue converted red LED
ActiveUS20100254129A1Produce and consistent and efficient light without the need for costly and complex circuitryPlanar light sourcesLight source combinationsBlue emissionBlue emitting
SSL lamps or luminaires are disclosed that combine blue, yellow (or green) and red photons or emissions to generate light with the desired characteristics. In different embodiments according to the present invention, the blue emission is not provided by an LED chip or package having a blue LED coated with a yellow phosphor, with blue light leaking through the yellow phosphor. Instead, the blue light component can be provided by other types of LED chips in the SSL luminaire such as one having a blue LED covered by a different colored conversion material, with blue light from the blue LED leaking through the different colored conversion material. In one embodiment, the blue component can be provided by an LED chip comprising a blue emitting LED covered by a conversion material that absorbs blue light and re-emits red light, with a portion of the blue light from the LED leaking through the red conversion material.
Owner:CREELED INC
White organic light emitting device
ActiveUS20090033212A1Improve luminous efficiencyExtend your lifeDischarge tube luminescnet screensLamp detailsOrganic light emitting deviceOrganic layer
Provided is a white organic light emitting device including an anode, a cathode and an organic layer disposed therebetween, the organic layer having a structure wherein an arrangement of a green emissive layer and a blue emissive layer is formed on both surfaces of a red emissive layer such that the resultant structure is symmetrical around the red emissive layer, and a spacer layer is disposed between opposing surfaces of the blue emissive layer and the green emissive layer, where the white organic light emitting device including this structure exhibits a constant luminescence spectra irrespective of any change in current density. A method of forming the white organic light emitting device is also disclosed.
Owner:SAMSUNG DISPLAY CO LTD
Organic light emitting diode display device
ActiveUS20100078631A1Improved color stabilityImprove efficiencySolid-state devicesSemiconductor/solid-state device manufacturingBlue emissionDisplay device
The OLED display device includes a first stack and a second stack that are separated from each other between an anode electrode and a cathode electrode, with a charge generation layer sandwiched between the first stack and the second stack, each of the first stack and the second stack having an emission layer. The first stack includes a blue emission layer formed between the anode electrode and the CGL. The second stack includes a fluorescent green emission layer and a phosphorescent red emission layer formed between the cathode electrode and the CGL. The blue emission layer includes one of a fluorescent blue emission layer and a phosphorescent blue emission layer.
Owner:LG DISPLAY CO LTD
Light Emitting Element and Light Emitting Device
InactiveUS20110204353A1Improve efficiencyEffective lightingLamination ancillary operationsElectroluminescent light sourcesHigh concentrationPeak value
Owner:SEMICON ENERGY LAB CO LTD
Magnesium barium thioaluminate and related phosphor materials
A phosphor and a method of deposition. The phosphor comprises a composition of the formula M'aBa1-aM''2M'''4':RE, where M' is at least one element selected from magnesium and calcium, M'' is at least one element selected from aluminum, gallium and indium, M''' is at least one element selected from sulphur, selenium and tellurium, RE is at least one rare earth element, especially europium or cerium, and 0<a<1. Deposition is preferably by dual source electron beam deposition. The phosphor may be annealed. The phosphor provides a high luminosity blue emission that does not require an optical filter to achieve acceptable colour coordinates for the blue sub-pixel element for a full colour thin film or thick film electroluminescent display. The blue sub-pixel pixel performance meets the luminosity and colour temperature specifications for current generation cathode ray tube displays.
Owner:IFIRE TECH INC
Surface illuminator and liquid crystal display having the same
InactiveUS20060220040A1Improve display qualityMechanical apparatusPoint-like light sourceBlue emissionLiquid-crystal display
The invention relates to a surface illuminator and a liquid crystal display having the same and provides a surface illuminator capable of achieving high display quality by employing an array of discrete light sources and a liquid crystal display having the same. A reflective surface for reflecting light in a light guide region of a light guide extends from an end of a light entrance surface through which light enters the light guide region. An LED light source serving as an array of discrete light sources is constituted by a red emission LED, a green emission LED, a blue emission LED, and another green emission LED provided alternately and discretely along the light entrance surface. A red LED serving as an end light source provided at the end of the LED light source on the side of an end of a reflective surface is disposed such that about one half of an emitting region of the same is obscured by the reflective surface to prevent about one half of the quantity of light emitted from entering the light guide region.
Owner:SHARP KK
Display device and illumination device
InactiveUS20100277673A1Reduce overlapImprove abilitiesGas discharge lamp usageLuminescent compositionsBlue emissionLiquid-crystal display
The invention especially provides a display device (1) with a liquid crystal display (LCD) panel (10) and a backlight illumination device (20), wherein the backlight illumination device (20) comprises a light emitting diode package (200) arranged to generate white backlight (251), wherein the light emitting diode package (200) comprises a blue light emitting diode, LED (201), a green luminescent material (203) and a red luminescent material (204); and a transmissive ceramic layer (206), arranged to transmit at least part of the blue emission (249), wherein the transmissive ceramic layer (206) comprises at least part of the green luminescent.material (203) and / or the red luminescent material (204). The LED (201), the green luminescent material (203) and the red luminescent material (204) are arranged to generate white light (250) for backlighting the liquid crystal display panel (10).
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Organic electroluminescent element
ActiveUS9748313B2High luminous efficiencySolid-state devicesSemiconductor/solid-state device manufacturingBlue emissionOrganic electroluminescence
Owner:SAMSUNG DISPLAY CO LTD
Low image sticking OLED display
ActiveUS20140077688A1Improve performanceDegree of reductionDischarge tube luminescnet screensElectroluminescent light sourcesTransport layerDisplay device
Devices and fabrication methods thereof are provided which reduce image sticking and / or improve lifetime and performance of blue emissive devices. Each device may include non-common transport layers between emissive devices, one or more optical capping layers, light and deep blue emissive devices, a mixed host emissive layer, a high T1 transport layer, and / or a stacked blue device in conjunction with single emissive layer red and / or green devices. The provided structures may be used individually, in combination, or as a group in a single device.
Owner:UNIVERSAL DISPLAY
White organic light emitting diode and method for manufacturing the same
ActiveUS7803469B2Improve emission efficiencyExtend your lifeDischarge tube luminescnet screensElectroluminescent light sourcesBlue emissionLight-emitting diode
A white organic light emitting diode (OLED) includes an emission layer that includes a blue emission layer and an emission layer excluding blue. The emission layer excluding blue includes a phosphorescent material and a mixture of a hole transporting material and electron transporting material.
Owner:SAMSUNG DISPLAY CO LTD
Organic electroluminescent device and organic electroluminescent display device
ActiveUS20150188073A1Improve efficiencySolid-state devicesSemiconductor/solid-state device manufacturingDopantBlue emission
An organic electroluminescent device and organic electroluminescent display device having enhanced efficiency are discussed. In one example, the organic electroluminescent device includes first and second electrodes facing each other on a substrate and at least two emission layers formed between the first and second electrodes and realizing blue light, wherein, among the emission layers, a first blue emission layer close to the first electrode includes a first blue dopant having a different maximum luminescence wavelength than that of a second blue dopant of a second blue emission layer close to the second electrode.
Owner:LG DISPLAY CO LTD
Organic Light Emitting Device
ActiveUS20150155519A1Improve emission efficiencyIncrease brightnessSolid-state devicesSemiconductor/solid-state device manufacturingBlue emissionOrganic light emitting device
Disclosed is an organic light emitting device. The organic light emitting device includes a first emission unit configured to include a first red emission layer which emits red light, a first green emission layer which emits green light, and a first blue emission layer which emits blue light, a second emission unit configured to include a second red emission layer which emits red light, a second green emission layer which emits green light, and a second blue emission layer which emits blue light, a charge generation layer disposed between the first emission unit and the second emission unit, a first electrode formed as a reflective electrode, and configured to supply an electric charge having a first polarity to the first emission unit and the second emission unit, and a second electrode configured to supply an electric charge having a second polarity to the first and second emission units.
Owner:LG DISPLAY CO LTD
Organic compound, and organic photoelectric device comprising the same
ActiveUS20110042654A1Improve solubilityOrganic chemistryDischarge tube luminescnet screensSimple Organic CompoundsOrganic solvent
Disclosed is an organic compound represented by the following Chemical Formula 1 that easily dissolves in an organic solvent, and that is applicable as a host material of an emission layer of an organic photoelectric device since it emits fluorescence and phosphorescence at a red wavelength through a blue wavelength.
Owner:CHEIL IND INC
Organic light emitting device
ActiveUS20150144926A1Improve emission efficiencyIncrease brightnessSolid-state devicesSemiconductor/solid-state device manufacturingBlue emissionOrganic light emitting device
Disclosed is an organic light emitting device. The organic light emitting device includes a first emission unit configured to include a common blue emission material layer which is included in common in a plurality of pixels emitting lights having different wavelength ranges, a second emission unit configured to include a red emission material layer, a green emission material layer, and a blue emission material layer which respectively emit lights having different wavelength ranges, a charge generation layer disposed between the first emission unit and the second emission unit, a first electrode formed as a reflective electrode, and configured to supply an electric charge having a first polarity to the first emission unit and the second emission unit, and a second electrode formed as a semi-transmissive electrode, and configured to supply an electric charge having a second polarity to the first emission unit and the second emission unit.
Owner:LG DISPLAY CO LTD
Full-color organic display having improved blue emission
ActiveUS7030554B2Extended service lifeImprove luminous efficiencyDischarge tube luminescnet screensLamp detailsColor imageBlue emission
Owner:GLOBAL OLED TECH
Blue light emitting compound and organic electroluminescent device using the same
ActiveUS7846558B2Group 4/14 element organic compoundsDischarge tube luminescnet screensBlue emissionDisplay device
Owner:SFC CO LTD
RGB patterning of organic light-emitting devices using photo-bleachable emitters dispersed in a common host
InactiveUS20030186078A1Discharge tube luminescnet screensElectroluminescent light sourcesDopantOrganic light emitting device
The present invention provides a method for fabricating an electroluminescent EL display, wherein the individual color pixels are formed by doping a common blue-emitting host with two or more photo-bleachable (or photo-oxidizable) dopants, such as red and green emitting organic materials. The host may also be doped with a blue emitting material that is not photo-bleachable.
Owner:NAVY THE UNTIED STATES OF AMERICAAS REPRESENTED BY THE SEC OF THE
Organic light-emitting diode display having nonoverlapping yellow and blue emission layers
ActiveUS8084940B2Discharge tube luminescnet screensElectroluminescent light sourcesBlue emissionDisplay device
An OLED display including: a first substrate; an opposing second substrate; an organic light-emitting unit disposed on a side of the first substrate that faces the second substrate; a driving circuit disposed on a side of the second substrate that faces the first substrate and connected to the organic light-emitting unit; and a filter. The organic light-emitting unit includes that is an anode, a cathode, and an organic emission layer disposed therebetween. The organic emission layer includes a blue emission layer a yellow emission layer. The filter is to convert light from the yellow emission layer into red light and green light.
Owner:SAMSUNG DISPLAY CO LTD
Organic electroluminescent device comprising the organic electroluminescent compounds
InactiveUS20140346406A1High luminous efficiencyLong lastingGroup 4/14 element organic compoundsElectroluminescent light sourcesDopantBlue emission
The present invention relates to an organic electroluminescent device comprising a combination of specific host compounds and specific dopant compounds. The organic electroluminescent device according to the present invention shows a blue emission; and has a long operating lifespan, high efficiency, high brightness, good color purity, low driving voltage, and improved operational stability.
Owner:ROHM & HAAS ELECTRONICS MATERIALS LLC
Highly luminescent cadmium-free nanocrystals with blue emission
Highly luminescent nanostructures comprising a ZnSe core and ZnS shell layers, particularly highly luminescent quantum dots, are provided. The nanostructures have high photoluminescence quantum yields and in certain embodiments emit light at particular wavelengths and have a narrow size distribution. Processes for producing such highly luminescent nanostructures and techniques for shell synthesis are also provided.
Owner:NANOSYS INC
Universal host for RG or RGB emission in organic light emitting devices
InactiveUS7221088B2Easily color tunedMinimizes number of processing stepDischarge tube luminescnet screensLamp detailsEnergy transferDopant
The present invention describes the use of red, green and, if necessary, blue dopants dispersed in a universal host material as the active emitting layer in OLEDs. The universal host is transparent in the visible region, and may be emissive in the blue region when used as the blue emitting species or possesses carrier transport properties. By dispersing the dopants in the universal host, efficient energy transfer from host to guest and / or direct carrier recombination on the dopant takes place resulting in bright red, green or blue emission, depending on the dopant. The resulting spectra are characteristic of the guest molecules.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Blue emitting Ce3+ Activated borate phosphors used in fluorescent lamps and TV tubes and a process for synthesizing the same
The present invention relates to novel blue emitting Ce3+ activated borate phosphors which are used in fluorescent having lamps and TV tubes, having the formula A6M1-xCexM'(BO3)6 wherein A=La,Sr; M=La,Y, Gd, Lu; and M=Mg, Al, Ga, and x ranging from 0.001-1, and a process for the synthesis of the said activated borate phosphors.
Owner:COUNCIL OF SCI & IND RES
Organic light emitting device and method of preparing the same
ActiveUS20080299365A1High yieldLow costElectroluminescent light sourcesSolid-state devicesBlue emissionOrganic light emitting device
Organic light emitting devices including an electron transport-emission layer, and methods of preparing the same are included. The electron transport-emission layer may be an electron transport-red emission layer, an electron transport-green emission layer or an electron transport-blue emission layer. The methods produce high yields of the organic light emitting devices and are less expensive than conventional methods.
Owner:SAMSUNG DISPLAY CO LTD
Organic electroluminescent white light device with multi-luminescent layer
InactiveCN101022157AImprove performanceIncrease brightnessElectroluminescent light sourcesSolid-state devicesElectronic transmissionHole transport layer
This invention relates to an organic electro-white light device including a transparent chip, an anode layer, an organic cavity injection layer, an organic cavity transmission layer, an organic light emission layer, an organic cavity blocking layer, an electronic transmission layer and a cathode layer, in which, the organic light emission layer is a multi-layer structure composed of a blue emission layer, a green emission layer, a yellow and a red lamination layer, the blue layer emits fluorescent light and the other two emit phosphorescence, a matrix material of double transmission polarities is added between two phosphorescence layers to eliminate energy transfer between them and exchange positions of the two layers to increase the radiation effect and brightness of the devices.
Owner:JILIN UNIV
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