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2351 results about "High luminance" patented technology
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High-dynamic-range imaging (HDRI) is a high dynamic range (HDR) technique used in imaging and photography to reproduce a greater dynamic range of luminosity than what is possible with standard digital imaging or photographic techniques. The aim is to present a similar range of luminance to that experienced through the human visual system.
Metal coordination compound, luminescence device and display apparatus
InactiveUS6921915B2High luminous efficiencyIncrease brightnessIndium organic compoundsDischarge tube luminescnet screensLuminescenceHigh luminance
Owner:SAMSUNG ELECTRONICS CO LTD
Organometallic complex and organic light-emitting element using same
InactiveUS20090039776A1Improve efficiencyIncreased durabilityGroup 5/15 element organic compoundsSolid-state devicesSimple Organic CompoundsOrganic compound
An organometallic complex and an organic light-emitting element containing the complex which has a very high efficiency, a high luminance, and durability. The organic light-emitting element has an anode, a cathode, and a layer including an organic compound sandwiched between the anode and cathode. The layer containing the organic compound includes at least one organometallic complex represented by General Formula [I] below.
Owner:CANON KK
Luminescence device and display apparatus
InactiveUS20030068526A1High efficiency luminescenceExtend device lifeIndium organic compoundsDischarge tube luminescnet screensHigh luminanceLight emitting device
A luminescence device having a layer containing a metal coordination compound which has a partial structure MLm of formula (2) below and is preferably entirely represented by formula (3) below:MLmL'n (3),wherein M denotes a metal atom of Ir, Pt, Rh or Pd; represent mutually different bidentate ligands; m is 1 or 2 or 3; n is 0 or 1 or 2 with the proviso that m+n=2 or 3; the partial structure MLm is represented by formula (2) below (wherein B is an isoquinolyl group bonded to the metal M with its N and including a position-1 carbon atom bonded to a cyclic group A which includes the C bonded to the metal M), and the partial structure ML'n is represented by formula (4), (5) or (6) shown below. There is provided a luminescence device capable of high-efficiency luminescence and long-term high luminance and adapted to red luminescence.
Owner:CANON KK
Red phosphorescent compounds and organic electroluminescent devices using the same
ActiveUS20090104472A1Good red color puritySolve low luminous efficiencyIndium organic compoundsElectroluminescent light sourcesQuantum efficiencyOrganic electroluminescence
Provided are red phosphorescent compounds represented by Formula 1:Organic electroluminescent devices using the red phosphorescent compounds are further provided. The organic electroluminescent devices exhibit good red color purity, high quantum efficiency, high power efficiency, high luminance, and long lifetime.
Owner:SAMSUNG ELECTRONICS CO LTD
Phenylcarbazole-based compound and organic electroluminescent device employing the same
ActiveUS20080107919A1High glass transition temperatureElectric stabilityOrganic chemistryDischarge tube luminescnet screensCarbazoleLow voltage
A phenylcarbazole-based compound is represented by Formula 1, and has superior electric properties and charge transport abilities, and thus is useful as a hole injection material, a hole transport material, and / or an emitting material which is suitable for fluorescent and phosphorescent devices of all colors, including red, green, blue, and white colors. The phenylcarbazole-based compound is synthesized by reacting carbazole with diamine. The organic electroluminescent device manufactured using the phenylcarbazole-based compound has high efficiency, low voltage, high luminance, and a long lifespan.
Owner:SAMSUNG DISPLAY CO LTD
Organic compound for light-emitting device, light-emitting device, and image display apparatus
ActiveUS20070231600A1Low costIncreased durabilityIndium organic compoundsDischarge tube luminescnet screensStructural formulaOrganic electroluminescence
A light-emitting device is provided which uses an organic compound to emit light with high luminance and extremely high efficiency. The organic compound is composed of a metal complex having monovalent bidentate ligands. The light-emitting device includes a pair of electrodes which are an anode and a cathode, and plural organic compound layers interposed between the electrodes, in which at least one layer of the organic compound layers contains a metal complex represented by the following structural formula. The light-emitting device is an organic electroluminescent device using the light-emitting device in which the layer including the organic compound is a light-emitting layer.
Owner:CANON KK
Light emitting apparatus and method for producing the same
ActiveUS20100320479A1Inhibition lossIncrease brightnessSolid-state devicesSemiconductor/solid-state device manufacturingOptical controlInorganic materials
A light emitting apparatus and a production method of the apparatus are provided that can emit light with less color unevenness at high luminance. The apparatus includes a light emitting device, a transparent member receiving incident light emitted from the device, and a covering member. The transparent member is formed of an inorganic material light conversion member including an externally exposed emission surface, and a side surface contiguous to the emission surface. The covering member contains a reflective material, and covers at least the side surfaces of the transparent member. Substantially only the emission surface serves as the emission area of the apparatus. It is possible to provide emitted light having excellent directivity and luminance. Emitted light can be easily optically controlled. In the case where each light emitting apparatus is used as a unit light source, the apparatus has high secondary usability.
Owner:NICHIA CORP
Polarizing element, optical element, and liquid crystal display
InactiveUS6661482B2Reduce contrastImprove the display effectStatic indicating devicesNon-linear opticsLiquid-crystal displayPolarizer
Owner:NITTO DENKO CORP
Light-Emitting Element, Light-Emitting Device, Electronic Device, and Lighting Device
ActiveUS20140034929A1Long life-timeImprove reliabilityOrganic chemistrySolid-state devicesSimple Organic CompoundsCarbazole
A light-emitting element having a long lifetime is provided. A light-emitting element exhibiting high emission efficiency in a high luminance region is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains a first organic compound, a second organic compound, and a phosphorescent compound. The first organic compound is represented by a general formula (G0). The molecular weight of the first organic compound is greater than or equal to 500 and less than or equal to 2000. The second organic compound is a compound having an electron-transport property. In the general formula (G0), Ar1 and Ar2 each independently represent a fluorenyl group, a spirofluorenyl group, or a biphenyl group, and Ar3 represents a substituent including a carbazole skeleton.
Owner:SEMICON ENERGY LAB CO LTD
Organic light emitting compound, organic light emitting device comprising the same, and method of manufacturing the organic light emitting device
InactiveUS20080124455A1Improve solubilityImprove thermal stabilityOrganic chemistryDischarge tube luminescnet screensOrganic light emitting deviceHigh luminance
Provided are an organic light emitting compound represented by Formula 1 below, an organic light emitting device comprising the same, and a method of manufacturing the organic light emitting device:where CY1 and CY2 are each independently a fused C6-C50 aromatic ring, Ar1 is a substituted or unsubstituted C6-C50 arylene group, Ar2, Ar3, Ar4, and Ar5 are each independently a substituted or unsubstituted C6-C50 aryl group, m and n are independently 0-3, and R1 and R2 are substituent groups. An organic light emitting device comprising the organic light emitting compound has low turn-on voltage, high efficiency, high color purity and high luminance.
Owner:SAMSUNG ELECTRONICS CO LTD
Metal coordination compound, luminescence device and display apparatus
InactiveUS20030068536A1Indium organic compoundsLayered productsChemical compoundLight emitting device
An electroluminescence device having a layer containing a specific metal coordination compound is provided. The metal coordination compound is represented by formula (1) below:MLmL'n (1),wherein M is a metal atom of Ir, Pt, Rh or Pd; L and L' are mutually different bidentate ligands; m is 1, 2 or 3 and n is 0, 1 or 2 with the proviso that m+n is 2 or 3; a partial structure MLm is represented by formula (2) shown below and a partial structure ML'n is represented by formula (3) or (4) shown below: The metal coordination compound of the formula (1) is characterized by having at least one aromatic substituent for at least one of CyN1, CyN2, CyC1 and CyC2. The metal coordination compound having the aromatic substituent is effective in providing high-efficiency luminescence, long-term high luminance, and less deterioration by current passing.
Owner:CANON KK
Material for organic electroluminescent device, organic electroluminescent device, illuminating device and display
ActiveUS20060121308A1Organic chemistryDischarge tube luminescnet screensQuantum efficiencyPolymer science
The present invention provides: an organic EL element exhibiting high luminance, a high external quantum efficiency and a long high temperature driving life at 50° C.; an illuminator and a display device employing the organic EL element; and a material preferably used for the organic EL element.
Owner:MERCK PATENT GMBH
Apparatus and method for the precision application of cosmetics
ActiveUS20090025747A1Easy to moveArea coveredTypewritersPackaging toiletriesCamera imageVolumetric Mass Density
One or more reflectance modifying agent (RMA) such as a pigmented cosmetic agent is applied selectively and precisely with a controlled spray to human skin according to local skin reflectance or texture attributes. One embodiment uses digital control based on the analysis of a camera images. Another embodiment, utilizes a calibrated scanning device comprising a plurality of LEDs and photodiode sensors to correct reflectance readings to compensate for device distance and orientation relative to the skin. Ranges of desired RMA application parameters of high luminance RMA, selectively applied to middle spatial frequency features, at low opacity or application density are each be significantly different from conventional cosmetic practice. The ranges are complementary and the use of all three techniques in combination provides a surprisingly effective result which preserves natural beauty while applying a minimum amount of cosmetic agent.
Owner:TCMS TRANSPARENT BEAUTY LLC
Backlight device and liquid crystal display
InactiveUS7185995B2Increased power consumptionSufficient luminance valueMeasurement apparatus componentsDiffusing elementsLiquid-crystal displayTransmittance
A light dimming dot pattern is provided for an LCD in which the diameter of dots is changed in a range from approximately 0.16 mm to approximately 0.65 mm depending on the distance of the dots from a fluorescent tube (13) in such a manner that the volume of the shielded light is increased and decreased at a location close to a position overlying the fluorescent tube (13) and at a location remote from the fluorescent tube (13), respectively. In this manner, a light dimming dot pattern with a transmittance for all light rays of approximately 62% (roughly in the vicinity of 62%), higher than the transmittance for all light rays in the conventional technique not higher than 50%, is produced. Consequently, the light of uniform high luminance may be produced without raising the luminance of the fluorescent tube (13), and hence an LCD of high luminance may be realized.
Owner:SONY CORP
Metal coordination compound, luminescence device and display apparatus
An electroluminescence device having a layer containing a specific metal coordination compound is provided. The metal coordination compound is represented by formula (1) below: MLmL'n (1), wherein M is a metal atom of Ir, Pt, Rh or Pd; L and L' are mutually different bidentate ligands; m is 1, 2 or 3 and n is 0, 1 or 2 with the proviso that m+n is 2 or 3; a partial structure MLm is represented by formula (2) shown below and a partial structure ML'n is represented by formula (3) or (4) shown below: at least one of the optional substituent(s) of the cyclic groups, and the cyclic groups CyC1 and CyC2 include an aromatic group capable of having a substituent represented by the following formula (5): The metal coordination compound having the aromatic group is effective in providing high-efficiency luminescence and long-term high luminance.
Owner:SAMSUNG ELECTRONICS CO LTD
Phosphor film, lighting device using the same, and display device
InactiveUS20060268537A1Solution to short lifeEfficient wide color reproduction rangePlanar/plate-like light guidesNon-linear opticsLight irradiationLiquid-crystal display
The invention realizes a phosphor film that has a fluorescent characteristic excellent in resistance to humidity and provides, using the phosphor film, a liquid crystal display device that is excellent in resistance to humidity and has satisfactory calorimetric property and color mixture property. Phosphor particles that are excited by incident light and emit light having a wavelength different from the incident light are mixed in a binder. The binder mixed with the phosphor particles is sandwiched between a translucent film and a non-permeable layer as a phosphor layer to form a phosphor film. This phosphor film is provided at least in one place among a place between a light source and a light guide of a lighting device, a place on a light irradiation surface of the light guide, and a place between the light guide and a reflection plate. Moreover, the phosphor particles have a characteristic that a wavelength absorbed by a color filter of a display element is set as an excitation wavelength and a luminescent wavelength is in a region transmitted by the color filter. With this phosphor film, it is possible to realize a display device that has extremely high luminance efficiency and color reproducibility.
Owner:SEIKO INSTR INC
High power light-emitting diode package comprising substrate having beacon
InactiveUS20080019133A1Reduce heat resistance requirementsDecreasing junction temperatureSemiconductor/solid-state device detailsLighting heating/cooling arrangementsCo-fired ceramicPrinted circuit board
Disclosed herein is a package structure including at least one high power light-emitting diode to exhibit excellent heat release properties. In the package structure, a light-emitting diode chip which generates heat is directly attached to a beacon processed to protrude from part of a heat spreader having high heat conductivity, whereby an electrical wiring portion is separated from a heat release portion, thus maximizing heat release properties and realizing high luminance and reliability. The package structure is composed of a beacon formed on a metal or non-metal substrate having high heat conductivity to mount a high power light-emitting diode chip, to increase heat release properties; a wiring portion provided on the same line as the diode to input and output power and signals; and a reflection cup having a cavity, which may be inserted into or attached to the heat spreader or the wiring substrate, including a low temperature co-fired ceramic substrate, a high temperature co-fired ceramic substrate, or a printed circuit board.
Owner:KOREA PHOTONICS TECH INST
Surface light emitting device
An surface light emitting device that is capable of emitting light of high luminance with higher uniformity is disclosed.The surface light emitting device comprising; a light guide plate, a reflector on the under surface of the light guide plate and, an LED light source having at least one LED element and provided so that a light emitted by the LED element is incident on at least one end face of the light guide plate, wherein the light guide plate has a light diffusing portion on the one end face so that a light emitted from the LED light source enters the light guide plate while being diffused therein, and the light diffusing portion has the top end being space from the top surface.
Owner:NICHIA CORP
Organic light emitting compound and organic light emitting device comprising the same, and method of manufacturing the organic light emitting device
InactiveUS20080122344A1Improve solubilityImprove thermal stabilityOrganic chemistryDischarge tube luminescnet screensOrganic light emitting deviceHigh color
Provided are an organic light emitting compound represented by Formula 1 below, an organic light emitting device comprising the same, and a method of manufacturing the light emitting device:wherein CY1, CY2, Ar1, R1 and R2 are described in the detailed description of the invention. An organic light emitting device comprising the organic light emitting compound has low turn-on voltage, high efficiency, high color purity and high luminance.
Owner:SAMSUNG DISPLAY CO LTD
Liquid crystal display device
InactiveUS6864930B2Increase brightnessIncrease awarenessMechanical apparatusLight guides for lighting systemsVisibilityLiquid-crystal display
An LCD provided with an edge light type back light unit which is arranged in a manner that the light emitted from a CCT in the form of a linear light source is condensed at the end portion of a light conduction plate, then the light reflected by a reflecting sheet and then ejected from the light conduction plate transmits through a light diffusion plate thereby to indirectly irradiate on a liquid crystal panel from the rear direction thereof in the form of planar light with uniform luminance. A light reflecting plate having a curved surface is disposed in the vicinity of the CCT. A light shielding plate is disposed in a manner that a part of the light emitted from the CCT and reflected by the light reflecting plate is condensed at the end portion of the light conduction plate. Another part of the light emitted from the CCT and reflected by the light reflecting plate is directed upward and directly irradiates a part of the display area of the liquid crystal panel thereby to form a high luminance irradiation portion. Accordingly, thus configured LCD is improved in its visibility and so can be formed as a vehicle-mounted alarm display device for displaying various alarms.
Owner:YAZAKI CORP
Gas discharge tube
ActiveUS20050231119A1Improvement of start propertyIncrease plasma densitySolid cathode detailsGas discharge lamp detailsStart timeHigh luminance
In the gas discharge tube according to the present invention, there is carried out narrowing of the discharge path with cooperation of the first opening 20 and the second opening 12 in order to obtain higher luminance of light. Further, in order to maintain excellent starting-properties of a lamp even if the discharge path is narrowed, a predetermined voltage is applied to a second discharge path limit portion 11 externally. Thereby, a positive or active starting discharge is produced in such a manner as to pass through the first opening 20. Further, the second opening 12 is comprised of not only a straight section 13 extending in a direction of an optical axis Y, but also a spread section 14 extending from an end portion of the straight section 13 toward the first opening 20. The spread section 14 has a function of improving the starting properties of the lamp and forms an arc ball, and the straight section has a function of improving a plasma density. Thereby, discharge at a starting time is made easy to pass through the second discharge path limit portion 11. As a result, a rapid start of discharge between a cathode 23 and an anode portion 8 is achieved in the second discharge path limit portion 11, and that contributes to proper generation of an arc ball after lighting.
Owner:HAMAMATSU PHOTONICS KK
Display Device, Liquid Crystal Monitor, Liquid Crystal Television Receiver, and Display Method
InactiveUS20090121994A1Avoid Brightness DifferencesMitigating excess brightness phenomenonCathode-ray tube indicatorsInput/output processes for data processingTelevision receiversDisplay device
In one embodiment of the present invention, a display device is disclosed wherein if a frame luminance is less than a maximum value, the device creates a difference between luminance outputs in the two subframes and sets the luminance difference to a value less than a sub-maximum luminance which is a maximum luminance output in one subframe. With the arrangement, no complete switching of the subframes in which luminance outputs are made occurs at a grayscale level where low luminance replaces high luminance or vice versa. Thus, the grayscale level-luminance curve continues smoothly.
Owner:SHARP KK
Electrochromic polymers and polymer electrochromic devices
InactiveUS6791738B2Increase the gapLess structural defectsPhotosensitive materialsElectrography/magnetographyPolymer scienceGas phase
The subject invention pertains to electrochromic polymers and polymer electrochromic devices. In a specific embodiment, two complementary polymers can be matched and incorporated into dual polymer electrochromic devices. The anodically coloring polymers in accordance with the subject invention can allow control over the color, brightness, and environmental stability of an electrochromic window. In addition, high device contrast ratios, high transmittance changes, and high luminance changes can be achieved, along with half-second switching times for full color change. Also provided are electrochromic devices such as advertising signage, video monitors, stadium scoreboards, computers, announcement boards, warning systems for cell phones, warning / information systems for automobiles, greeting cards, electrochromic windows, billboards, electronic books, and electrical wiring. The subject invention also provides for the use of complementary electrochromic polymers in the manufacture of electrochromic devices. In some embodiments, the devices of the invention can be prepared using metal vapor deposition or line patterning.
Owner:FLORIDA UNIV OF A FLORIDA
Imaging device, imaging device image output method, and computer program
ActiveUS20060033823A1Weight the low-middle luminance regionIncrease rangeTelevision system detailsPhotometryComputer scienceHigh luminance
An image pickup apparatus capable of performing dynamic assignment of an output image in a dynamic range according to a subject. The image pickup apparatus includes an image pickup device (131) for picking up an image of a subject, a signal processing section (133) for generating a composite image having a relatively wider dynamic range than at least either of the dynamic ranges of a long-time exposure image picked up with a relatively long exposure time by the image pickup device and a short-time exposure image picked up with a relatively short exposure time by the image pickup device, by synthesizing the long-time exposure image and the short-time exposure image, and a control section (137) for compressing the composite image and dynamically varies the assignment proportion of a high luminance dynamic range to a low-middle luminance dynamic range in a dynamic range of an output image to be outputted as a video signal.
Owner:SONY CORP
Semiconductor light emitting device and method for producing the same
InactiveUS20100140648A1Increase brightnessInhibitionSemiconductor/solid-state device testing/measurementSolid-state devicesHigh luminanceLuminous flux
A semiconductor light emitting device can be configured to maintain high luminance and to suppress the possibility of the occurrence of wire breakage with high quality and reliability. A method for producing such a semiconductor light emitting device with a high process yield is also disclosed. The semiconductor light emitting device can include a sealing member into which a reflective filler can be mixed in such an amount (concentration) range that luminous flux with a predetermined amount can be maintained and the possibility of the occurrence of wire breakage can be lowered. Various sealing members containing a reflective filler with a plurality of concentrations within this range can be prepared in advance. By taking advantage of the phenomenon where chromaticity shifts depending on the concentration of the reflective filler, a semiconductor light emitting device with less chromaticity variation can be produced utilizing a sealing member with a particular concentration in accordance with the chromaticity of a particular semiconductor light emitting element that is used and which may be varied during fabrication.
Owner:STANLEY ELECTRIC CO LTD
Color display device with enhanced pixel pattern
InactiveUS20060170712A1Good pattern uniformityImprove visibilitySolid-state devicesCathode-ray tube indicatorsDisplay deviceComputer science
A color display device is disclosed, comprising: an array of subpixels of three different colors, including subpixels of a relatively high luminance first color and subpixels of relatively lower luminance second and third colors, wherein the subpixels are arranged into rows or columns to form a repeating pattern of alternating lower luminance and high luminance color subpixels in each row or column, with the sequential order of the two lower luminance color subpixels being alternated within each row or column, and wherein the alignment of subpixels of the same colors in adjacent rows or columns is such that the high luminance color subpixels are aligned more closely to perpendicular than are each of the lower luminance color subpixels relative to the direction of the rows or columns in which the subpixels are arranged in a repeating pattern.
Owner:EASTMAN KODAK CO
Backlight including external electrode fluorescent lamp and method for driving the same
InactiveUS6674250B2Improve efficiencyHigh luminanceElectric circuit arrangementsLighting heating/cooling arrangementsFluorescenceEngineering
The present invention discloses a backlight including external electrode fluorescent lamps and a method for driving the backlight. The backlight includes fluorescent lamps having external electrodes made of an electrically conductive material for wrapping the outer peripheral surfaces including edge cross-sections on both ends of a glass tube with a layer of fluorescent substance applied thereon. The backlight is constructed in a manner that a plurality of such fluorescent lamps are installed at the outer portions of a plastic light guide, and an alternating current type power source is applied from the outside to the fluorescent lamps by installing a plurality of the fluorescent lamps between a reflecting plate and a diffusing plate and electrically connecting them with one another. The backlight of the present invention is driven by a square wave from a switching inverter, and is characterized by the use of an overshooting waveform and a self-discharge effect favorable to an initial discharge, thereby driving it using a low frequency of several dozen kHz and thus realizing high luminance and high efficiency.
Owner:KWANG WOON DISPLAY TECH
Liquid crystal display apparatus and its luminance control method
InactiveUS6693612B1Easy to seeIncrease impressionTelevision system detailsColor television detailsInformation processingLiquid-crystal display
The information processing apparatus equipped with a liquid crystal display apparatus that is usable in the face-to-face usage style. When the display direction is switched into the facing direction and in a normal usage state, the liquid crystal display apparatus exhibits an excellent visual recognizability and complicated operations are unnecessary. The image information, the picture direction of which has been inverted upside down, is outputted from the information processing unit 2 to the display unit 1 in such a manner as to be coupled with the picture direction change instructing member 3. At the same time, the luminance information at the time of the picture upside-down inversion, which has been set in advance into the luminance adjusting member 4, is supplied to the display unit 1 so as to change the luminance simultaneously with the picture inversion. At this time, the luminance of the display unit 1 at the time of the picture upside-down inversion is changed to a higher luminance, thereby making it possible to enhance the visual recognizability from the facing side.
Owner:MAXELL HLDG LTD
LCD with adaptive luminance intensifying function and driving method thereof
InactiveUS6839048B2Increase and decrease luminance levelStatic indicating devicesNon-linear opticsLuminance meterControl signal
Disclosed is an LCD having an adaptive luminance intensifying function and driving method thereof. A timing controller checks features of externally provided image data, and when they are found to be moving pictures, it determines a luminance level required from the image data and outputs a luminance level control signal, and when they are found to be still images, outputs a predetermined luminance signal. A backlight driver outputs a high-potential backlight driving voltage to the backlight unit when a luminance control signal of high-luminance level driving is provided by the timing controller, and outputs a constant level luminance signal when a constant luminance signal is input. As a result, by selecting a plurality of portions of the displayed screen and tracking and monitoring the changes of the image data, features of the images are defined and application conditions of the luminance intensifying function are determined to control the luminance level of the backlight and outputs of gamma voltage levels. Accordingly, the contrast of a display screen is improved and the power consumption is
Owner:SAMSUNG DISPLAY CO LTD
LED display apparatus having active devices and fabrication method thereof
ActiveUS20110273410A1Increase brightnessReduce power consumptionSolid-state devicesSemiconductor/solid-state device manufacturingOptical propertyLED display
An active matrix LED display apparatus and a fabrication method thereof are provided. The active matrix LED display apparatus enables to miniaturize pixel by a formation of wiring on bottom layer and an assembly of each block through each eutectic layer into each transistor block receptor and / or each LED block receptor formed according to each color element unit, and to be embodied with high luminance, low power consumption, high reliability and superior optical property by assembling a transistor block having high electron mobility. And the fabricating method of the present invention enables to make efficiently an AM-LED display apparatus at room temperature in a short time by using different shapes of receptor and block depending on the function of a transistor and / or on the color of an LED.
Owner:SEOUL NAT UNIV R&DB FOUND
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