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53results about How to "Luminous efficiency" patented technology
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Light emitting device
InactiveUS20070176161A1Increase brightnessSame quantitySolid-state devicesSemiconductor devicesConductive materialsLength wave
It is an object of the invention to provide a light emitting device which can display a superior image in which luminescent color from each light emitting layer is beautifully displayed and power consumption is lowered in a light emitting element in which light emitting layers are stacked. One feature of the invention is that, in a light emitting element which comprises light emitting layers stacked between electrodes, each distance between each light emitting layer and an electrode is approximately oddly multiplied ¼ wavelength by controlling a thickness of a layer provided therebetween to enhance luminous output efficiency. Another feature of the invention is that a drive voltage is lowered using a high conductive material for the layer compared with a conventional element.
Owner:SEMICON ENERGY LAB CO LTD
Light Emitting Device
InactiveUS20110291088A1Luminous efficiencyConvenient lightingSolid-state devicesSemiconductor/solid-state device manufacturingConductive materialsLength wave
It is an object of the invention to provide a light emitting device which can display a superior image in which luminescent color from each light emitting layer is beautifully displayed and power consumption is lowered in a light emitting element in which light emitting layers are stacked. One feature of the invention is that, in a light emitting element which comprises light emitting layers stacked between electrodes, each distance between each light emitting layer and an electrode is approximately oddly multiplied ¼ wavelength by controlling a thickness of a layer provided therebetween to enhance luminous output efficiency. Another feature of the invention is that a drive voltage is lowered using a high conductive material for the layer compared with a conventional element.
Owner:SEMICON ENERGY LAB CO LTD
Brightness enhancement article
InactiveUS20050041311A1Efficient for luminance enhancementLight would become directionalPrismsMechanical apparatusOptoelectronicsPrism
A brightness enhancement article for conditioning luminance from a light source (18) in a viewing direction is provided. A prism surface side (44) collects light from the light providing surface (14), where, in one embodiment, the prism surface side (44) has a series of substantially parallel grooves (30) forming a series of longitudinal trapezoidal prism elements (38). Each trapezoidal prism element (38) has a face plane (46) disposed toward the light source (18) and first and second legs (34,36) extending back from said face plane (46), respectively, forming first and second base angles β with the face plane (46), where both first and second base angles β satisfy: 90 degrees<base angle β<120 degrees.
Owner:SKC HAAS DISPLAY FILMS CO LTD
Apparatus and method for luminometric assay
InactiveUS7163822B2Low cost of reagentsLow costBioreactor/fermenter combinationsTelevision system detailsSensor arrayAssay
A small sized, cost-effective genetic testing apparatus that provides high sensitivity testing, for performing genetic testing simply and at low cost. An optical sensor array for the apparatus and method for luminometric assay comprises a means that simultaneously selects 2 pixels and detects minute amounts of chemiluminescence by obtaining the differential output of the respective signals.
Owner:HITACHI LTD
Organic electroluminescent device
ActiveUS7474049B2Improve luminous efficiencyLuminous efficiencyDischarge tube luminescnet screensElectroluminescent light sourcesTriboluminescenceLighting spectrum
An organic electroluminescent device (OELD) is provided. The OELD includes a substrate, a first electrode, a second electrode, a hole transport layer, an electron transport layer and two emissive layers. The first electrode and the second electrode are disposed over the substrate. The hole transport layer is disposed between the first electrode and the second electrode. The electron transport layer is disposed between the second electrode and the hole transport layer. The emissive layers are disposed between the hole transport layer and the electron transport layer. One of the emissive layers is a fluorescent emissive layer and another one of the emissive layers is a phosphorescent emissive layer. The visible light of the fluorescent emissive layer and the phosphorescent emissive layer are not absorbed by each other and the visible light spectrums of the fluorescent emissive layer and the phosphorescent emissive layer are not affected by each other.
Owner:OPTRONIC SCI LLC
Nitride semiconductor laser element
ActiveUS20060256825A1Suppresses FFP deteriorationProcess stabilityOptical wave guidanceLaser cooling arrangementsOptical radiationEngineering
A nitride semiconductor laser device comprises a nitride semiconductor substrate (101); a nitride semiconductor lamination structure that has an n-type semiconductor layer (102), an active layer (104) and a p-type semiconductor layer (103) laminated on or above the nitride semiconductor substrate (101), and has a stripe-shaped waveguide region for laser light; and end surface protective films (110) on the both end surfaces substantially perpendicular to the waveguide region. In the nitride semiconductor laser device, the nitride semiconductor substrate (101) has a luminescent radiation region (112) that absorbs light emitted from the active layer (104) and emits luminescent radiation with a wavelength longer than the wavelength of the emitted light, and the end surface protective films (110) have a high reflectivity for the wavelength of the luminescent radiation from the luminescent radiation region (112). Accordingly, a nitride semiconductor laser device that does not improperly operate and has excellent FFP is provided.
Owner:NICHIA CORP
Organic electroluminescence type display apparatus
InactiveUS20060192481A1Brighter imageHigh light efficiencyDischarge tube luminescnet screensRoad vehicles traffic controlOrganic electroluminescenceImpurity
An organic electroluminescence type display apparatus of top emission type, in which a thin film transistor (TFT), a flattening film made of organic resin and an organic EL element, in which at least an anode, an electroluminescence layer and a cathode are laminated on the flattening film in this order, are formed in each picture element in a display region on a substrate. The anode is composed of at least two layer film including an aluminum (Al) alloy film containing as a impurity at least one of transition metals of the eighth group of 3d into Al and including a light transmitting conductive oxide film laminated on the Al alloy film.
Owner:MITSUBISHI ELECTRIC CORP
Long Decay Phosphors for Lighting Applications
ActiveUS20130187556A1Increase phosphor decay timeLow costPoint-like light sourceElectroluminescent light sourcesPhotoluminescencePhosphor
A photoluminescent material has the characteristic of a long photoluminescence decay and has the general composition Ca3-x-m-nAxSc2-yMySi3-zEzO12:mCe3+,nMn2+, where A is at least one divalent cation including Sr, Ba or a combination of monovalent and trivalent cations including combinations of Li, Na, K, B, Al and Ga; M is at least one trivalent cation including Al, Ga, or a divalent cation including Mg, E is a combination of a trivalent and a pentavalent cation including B, Al, Ga, N and P, or a combination of monovalent and trivalent cations including Li, Na, K, B, Al, Ga, N and P. The A cation replaces Ca; the M cation replaces Sc, and E replaces Si. This Mn and Ce doped phosphor emits in the yellow to green with a peak at around 510 and / or 560 and 690 nm. The phosphor material has applications in LED illumination systems.
Owner:INTEMATIX
Display device
ActiveUS20170278905A1Conserve costLuminous efficiencySolid-state devicesSemiconductor/solid-state device manufacturingComputer graphics (images)Display device
A display device is disclosed, which includes: a pixel group including a first pixel having a red sub-pixel and a blue sub-pixel; a second pixel having a green sub-pixel and a blue sub-pixel; a third pixel having a green sub-pixel and a blue sub-pixel; and a fourth pixel having a red sub-pixel and a blue sub-pixel. The first pixel is adjacent to the second pixel in a row direction. The first pixel is adjacent to the second pixel in a column direction. The fourth pixel is diagonal to the first pixel, and the fourth pixel is adjacent to the second pixel and the third pixel. In the pixel group, the blue sub-pixels are quantitatively more than the red sub-pixels, and the blue sub-pixels are quantitatively more than the green sub-pixels.
Owner:INNOLUX CORP
Nitride semiconductor laser element
ActiveUS7609737B2Improve featuresAccurate operationOptical wave guidanceLaser cooling arrangementsLaser lightHigh reflectivity
A nitride semiconductor laser device comprises a nitride semiconductor substrate (101); a nitride semiconductor lamination structure that has an n-type semiconductor layer (102), an active layer (104) and a p-type semiconductor layer (103) laminated on or above the nitride semiconductor substrate (101), and has a stripe-shaped waveguide region for laser light; and end surface protective films (110) on the both end surfaces substantially perpendicular to the waveguide region. In the nitride semiconductor laser device, the nitride semiconductor substrate (101) has a luminescent radiation region (112) that absorbs light emitted from the active layer (104) and emits luminescent radiation with a wavelength longer than the wavelength of the emitted light, and the end surface protective films (110) have a high reflectivity for the wavelength of the luminescent radiation from the luminescent radiation region (112). Accordingly, a nitride semiconductor laser device that does not improperly operate and has excellent FFP is provided.
Owner:NICHIA CORP
Luminescent Material And Method For Producing Same
InactiveUS20070202353A1Improve luminous efficiencyIncrease brightnessElectroluminescent light sourcesSynthetic resin layered productsHydrogen atomHalogen
A luminescent material composed of the polymer of the organic silicon compound represented by the following general formula (1): Chemical Formula 1 [where X is an organic molecule which emits fluorescence or phosphorescence; R1 is a lower alkoxy group, a hydroxyl group, an allyl group, an ester group, or halogen atoms; R2 is a lower alkyl group or a hydrogen atom; n is an integer of 1 to 3; and m is an integer of 1 to 4].
Owner:TOYOTA CENT RES & DEV LAB INC
Tetrakis(1-imidazolyl) borate (BIM4) based zwitterionic and related molecules used as electron injection layers
InactiveUS20100145062A1Improve performanceLuminous efficiencySilicon organic compoundsGroup 3/13 element organic compoundsElectron injectionZwitterion
Tetrakis(1-imidazolyl)borate (BIm4) based zwitterionic and / or related molecules for the fabrication of PLEDs is provided. Device performances with these materials approaches that of devices with Ba / Al cathodes for which the cathode contact is ohmic. Methods of producing such materials, and electron injection layers and devices containing these materials are also provided.
Owner:RGT UNIV OF CALIFORNIA
Light emitting diode chip with double close-loop electrode design
InactiveUS20070200120A1Affecting luminous efficiencyIncrease light radiatedSolid-state devicesSemiconductor devicesLight-emitting diodeSemiconductor
An LED chip with double close-loop electrode design includes a substrate, a first-type doped semiconductor layer, a light emitting layer, a second-type doped semiconductor layer, a first electrode and a second electrode. The first-type doped semiconductor layer is disposed on the substrate, the light emitting layer is disposed on the first-type doped semiconductor layer and the second-type doped semiconductor layer is disposed on the light emitting layer. The first electrode, disposed on the first-type doped semiconductor layer, has a close-loop pattern. The second electrode, disposed on the second-type doped semiconductor layer, is located inside a region encircled by the first electrode and has a close-loop pattern. In this way, the LED chip with double close-loop electrode design is able to avoid deteriorated luminous efficiency caused by broken electrodes.
Owner:EPISTAR CORP
Compound for organic electronic element, organic electronic element comprising the same, and electronic device thereof
ActiveUS20170288148A1Efficient electron blockingHigh purityOrganic chemistrySolid-state devicesElectronic componentElectron
Provided are a compound of Formula 1 and an organic electric element comprising a first electrode, a second electrode, and an organic material layer formed between the first electrode and the second electrode, and electronic device comprising the organic electric element, wherein the driving voltage of the organic electronic device can be lowered, and the luminous efficiency and life span can be improved by comprising the compound represented by Formula 1 in the organic material layer.
Owner:DUK SAN NEOLUX
Light emitting diode display
InactiveUS20180158847A1Improve inferior luminous efficiencyLuminous efficiencyStatic indicating devicesSolid-state devicesVertical projectionLED display
A light emitting diode (LED) display includes a substrate, a pixel define layer, at least one first color micro LED, and at least one second color micro LED. The pixel define layer is disposed on the substrate and has a first opening and a second opening separated from each other. Contours of the first and second openings on a surface of the pixel define layer facing away from the substrate respectively define areas which are the same as each other. The first color micro LED is disposed in the first opening and has a first vertical projection projected on the substrate. The second color micro LED is disposed in the second opening and has a second vertical projection projected on the substrate. An area of the first vertical projection is different from an area of the second vertical projection.
Owner:AU OPTRONICS CORP
Biscarbazole derivative and organic electroluminescence element using same
InactiveUS20140191225A1Confining excitation energyLuminous efficiencyOrganic chemistrySolid-state devicesHydrogen atomNitrogen
A biscarbazole derivative is represented by the following formula (1). A1 and A2 of the following formula (1) represent an aromatic hydrocarbon group having 6 to 30 ring carbon atoms or an aromatic heterocyclic group having 1 to 30 ring carbon atoms. However, at least one of A1 and A2 represents an aromatic heterocyclic group having 1 to 30 ring carbon atoms. Y1 to Y15 represent CR or a nitrogen atom. One of Y8 to Y11 is C (carbon atom) obtained by removing R from CR. The obtained C is bonded to L3. R each independently represents a hydrogen atom, an aromatic hydrocarbon group or the like. L1 to L3 represent a single bond or a divalent linking group. When L3 is a single bond and is bonded to Y11, L1 and L2 are divalent linking groups.
Owner:IDEMITSU KOSAN CO LTD
Backlight module for LCD
ActiveUS20060197889A1Luminous efficiencyImprove brightness and uniformityIlluminated signsNon-linear opticsLight sourceOptoelectronics
A backlight module includes a light box and multiple real light sources. The light box has an opening and a plurality of substantially parallel grooves recessed from a bottom surface thereof. Each of the slots has a reflection curved surface. A light source allocation line is defined between every two adjacent grooves. The light source allocation lines are parallel to the grooves. The sum of shortest distances between any point of the reflection curved surface and the two adjacent light source allocation lines is substantially the same. In addition, the real light sources are alternately allocated in the light source allocation lines. A part of light emitted from each light source is reflected from the reflection curved surface to the light source allocation line in which no light source is allocated. Thereby, a virtual light source is formed on the light source allocation line that does not contain a real light source.
Owner:INNOLUX CORP
Phosphor with hybrid coating and method of production
ActiveUS20180230376A1Reduce decomposition rateImprove performanceChemical vapor deposition coatingLuminescent compositionsPhosphorEngineering
The invention provides a method for providing luminescent particles (100) with a hybrid coating, the method comprising (i) providing a first coating layer (110) onto the luminescent particles (100) by application of a sol-gel coating process, thereby providing coated luminescent particles; and (ii) providing a second coating layer (120) onto the coated luminescent particles by application of an atomic layer deposition process. The invention also provides luminescent particles (100) comprise a luminescent core (102), a first coating layer (110) having a first coating layer thickness (d1) in the range of 50-300 nm, and a second coating layer (120) having a second coating layer thickness (d2) in the range of 5-250 nm.
Owner:KONINKLJIJKE PHILIPS NV
Optical measurement apparatus and method
InactiveUS20050213100A1Optimise reflectanceOptimise luminescence collection efficiencyNanoinformaticsMaterial analysis by optical meansLight beamOptical measurements
A modulation spectroscopy system (1) directs a probe beam (11) onto a sample (10), the reflected probe beam being collected by a collector (7) and processed by a detector (8). A pump beam generated by a source (4, 5) directs a pump beam (13) onto the sample at the same spot as the probe beam. However, it also switches the pump beam via a path (14) onto an adjacent location not overlapping the probe spot. This is referred to as spatial modulation. A cylindrical lens (16) in the collection subsystem (7) collects reflected light including luminescence from both pump beam spots simultaneously, so that the luminescence becomes a d.c. signal which can be easily eliminated, including means from the modulator for varying pump beam intensities and positions. This provides means to reject the unwanted background luminescence signal as well as improvement to the signal to noise ratio.
Owner:OPTICAL METROLOGY PATENTS
Display device
ActiveUS9941334B2Conserve costLuminous efficiencySolid-state devicesSemiconductor/solid-state device manufacturingDisplay deviceComputer engineering
A display device is disclosed, which includes: a pixel group including a first pixel having a red sub-pixel and a blue sub-pixel; a second pixel having a green sub-pixel and a blue sub-pixel; a third pixel having a green sub-pixel and a blue sub-pixel; and a fourth pixel having a red sub-pixel and a blue sub-pixel. The first pixel is adjacent to the second pixel in a row direction. The first pixel is adjacent to the second pixel in a column direction. The fourth pixel is diagonal to the first pixel, and the fourth pixel is adjacent to the second pixel and the third pixel. In the pixel group, the blue sub-pixels are quantitatively more than the red sub-pixels, and the blue sub-pixels are quantitatively more than the green sub-pixels.
Owner:INNOLUX CORP
Quantitative Detection of Lead in Water
ActiveUS20080280366A1Luminous efficiencyEfficient emissionsChemiluminescene/bioluminescenceSolid sorbent liquid separationEnvironmental chemistryAqueous solution
Owner:UNIV OF VIRGINIA ALUMNI PATENTS FOUND
Multi-facet lens having continuous non-spherical curved portion
InactiveUS20180058661A1Shorten focal lengthReduction in lens thicknessOptical signallingCondensersOptoelectronics
The present invention relates to a multi-facet lens having a continuous non-spherical curved portion, and more particularly, when a thickness direction of the lens is defined as a vertical direction, to a multi-facet lens having a continuous non-spherical curved portion which allows luminous efficiency to be improved through a continuous non-spherical curved portion which has no dummy surface and no step in a direction perpendicular to a light input portion of a vertical lens.
Owner:HYUNDAI MOBIS CO LTD
Lighting Device and Method for Producing a Lighting Device
InactiveUS20170054110A1Simplifies and shortens processIncrease flexibilitySolid-state devicesSemiconductor/solid-state device manufacturingEffect lightPhysics
Owner:OSRAM OLED
Light emitting diode chip with double close-loop electrode design
InactiveUS7462868B2Avoiding deteriorated luminous efficiencyWithout affecting luminous efficiencySolid-state devicesSemiconductor devicesLight-emitting diodeSemiconductor
Owner:EPISTAR CORP
Organic luminescent element
InactiveUS20120262053A1Luminous efficiencyEffective radiationDischarge tube luminescnet screensElectric discharge tubesOrganic electroluminescenceRefractive index
An organic luminescent element comprises a substrate, an organic electroluminescence element formed on one surface thereof and having a light-emitting section emitting light to the substrate, and a lens attached on the other surface of the substrate. A refraction index of the lens is ≧ that of the substrate. An area of the light-emitting section, parallel to the substrate's surface, is smaller than an area of the substrate on which the lens is attached. An angle θ between a line perpendicular to the substrate's surface in a direction from the light-emitting section toward the substrate and a straight line connecting an end of the light-emitting section and an end of the lens, is set to be ≧60°.
Owner:PANASONIC CORP
Light source and display using the same
InactiveUS7005197B2Excellent luminous propertiesLuminous efficiencyDischarge tube luminescnet screensElectroluminescent light sourcesDopantPhosphor
The luminance of phosphor is enhanced by forming a phosphor screen of a fluorescence generation unit by phosphor expressed by the following composition formula: (L1-a-bGdaCeb)3(Al1-cGac)5O12:Md wherein, a, b and c are each in the following ranges of 0≦a≦1.0, 0<b≦0.1 and 0≦c≦1.0, M is dopant of a monovalent metal element and is included in phosphor by approximately 0<d≦1000 wt-ppm. Dopant M of a monovalent metal element is at least one type of element selected from a group consisting of K, Na, Li, Cu, Ag and Au. Thus, a display using a white light of improved luminescence and having excellent characteristics can be realized.
Owner:HITACHI LTD
Optical semiconductor device and process for producing the same
InactiveUS7083995B2Lowering in yield can be preventedSuppress mutationOptical wave guidanceLaser optical resonator constructionResistCoupling
Owner:RENESAS ELECTRONICS CORP
Quantitative detection of lead in water
ActiveUS7749765B2Luminous efficiencyEfficient emissionsChemiluminescene/bioluminescenceSolid sorbent liquid separationAqueous solutionMetallic Lead
Owner:UNIV OF VIRGINIA ALUMNI PATENTS FOUND
Display device and electronic apparatus
InactiveUS8493294B2Efficient detectionIncreasing the thicknessDischarge tube luminescnet screensStatic indicating devicesPhotovoltaic detectorsPhotodetector
A display device includes: a dummy pixel provided on a display panel; a reflection film provided on a light-emitting-surface side of the display panel for reflecting light emitted from the dummy pixel; a photodetector provided on an opposite side of the display panel from the light-emitting surface for detecting the light emitted from the dummy pixel and reflected from the reflection film; and a correction circuit for correcting, based on the results of detection by the photodetector, the luminance of effective pixels that contribute to image display.
Owner:JOLED INC
Scintillator plate
InactiveUS20080023648A1Improve emission efficiencyImprove luminancePhotometryVacuum evaporation coatingGas phasePhosphor
Disclosed is a scintillator plate comprising on a substrate a phosphor layer formed by a process of vapor deposition, wherein a thallium compound having a melting point within ±70° C. of that of CsI and CsI are deposited on a substrate to form a thallium-activated phosphor layer.
Owner:KONICA MINOLTA MEDICAL & GRAPHICS INC
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