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公开(公告)号：US07264527B2
公开(公告)日：2007-09-04
申请号：US10877698
申请日：2004-06-25
CPC分类号： H01L33/06 , B82Y10/00 , C09K11/02 , C09K11/565 , C09K11/883 , H01L33/502 , H01L33/504 , H01S3/169 , Y02B20/181 , Y10S977/95
摘要： A light-emitting device comprising a population of quantum dots (QDs) embedded in a host matrix and a primary light source which causes the QDs to emit secondary light and a method of making such a device. The size distribution of the QDs is chosen to allow light of a particular color to be emitted therefrom. The light emitted from the device may be of either a pure (monochromatic) color, or a mixed (polychromatic) color, and may consist solely of light emitted from the QDs themselves, or of a mixture of light emitted from the QDs and light emitted from the primary source. The QDs desirably are composed of an undoped semiconductor such as CdSe, and may optionally be overcoated to increase photoluminescence.
摘要翻译： 一种发光装置，包括嵌入在主矩阵中的量子点群（QD）和导致QD发出二次光的初级光源以及制造这种器件的方法。 选择量子点的尺寸分布以允许从其发射特定颜色的光。 从装置发射的光可以是纯（单色）或混合（多色）颜色，并且可以仅由QDs本身发出的光或者从QD发出的光的混合物和发射的光 从主要来源。 QD理想地由诸如CdSe的未掺杂的半导体组成，并且可以任选地被涂覆以增加光致发光。
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公开(公告)号：US20070139352A1
公开(公告)日：2007-06-21
申请号：US11312679
申请日：2005-12-19
申请人： Mark Pugh , Gerard Harbers , Serge Bierhuizen
发明人： Mark Pugh , Gerard Harbers , Serge Bierhuizen
IPC分类号： G09G3/36
CPC分类号： G09G3/3413 , G02F1/133514 , G02F1/133603 , G02F2203/34 , G09G2300/0452 , G09G2310/0235
摘要： In an LCD, a backlight having red, green, and blue LEDs is controlled to generate monochromatic light (e,g., blue) during a portion of a cycle, such as an image frame cycle. During another portion of the cycle, all the LEDs are illuminated to create white light. The color filter in the LCD panel contains, for each white pixel, a first color (e.g., red) subpixel filter, a second color (e.g., green) subpixel filter, and a clear subpixel area for passing white light and the monochromatic. The liquid crystal layer shutters are controlled to pass from 0-100% of the light for their associated subpixels to create a color image. With proper control of the shutters, any desired color of each white pixel can be achieved during the cycle. By converting one color filter to a clear area, the transmission efficiency of the display is greatly increased.
摘要翻译： 在LCD中，控制具有红色，绿色和蓝色LED的背光，以在诸如图像帧周期的周期的一部分期间产生单色光（例如蓝色）。 在循环的另一部分期间，所有的LED都被照亮以产生白光。 LCD面板中的滤色器对于每个白色像素包含第一颜色（例如，红色）子像素滤色器，第二颜色（例如，绿色）子像素滤色器和用于通过白光和单色的透明子像素区域。 控制液晶层百叶窗从相关子像素的0-100％的光通过，以产生彩色图像。 通过对百叶窗的适当控制，可以在该周期期间实现每个白色像素的任何期望的颜色。 通过将一个滤色器转换为透明区域，显示器的传输效率大大提高。
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公开(公告)号：US20060283786A1
公开(公告)日：2006-12-21
申请号：US11156102
申请日：2005-06-17
申请人： Gerard Harbers
发明人： Gerard Harbers
IPC分类号： B01D17/12
CPC分类号： B01J19/123 , A61L9/20 , B01D53/007 , B01D2257/91 , B01D2259/804 , B01J2219/00069 , B01J2219/00198 , B01J2219/00238 , B01J2219/0877 , C02F1/325 , C02F2201/3222 , C02F2201/3227 , C02F2201/3228 , C02F2201/326 , H05B3/0052
摘要： A system for purifying a fluid uses ultra violet (UV) light to inactivate micro-organisms present in the fluid. The system has an arrangement of UV light emitters on perforated plates. The fluid, while passing through perforations in the perforated plates, is exposed to the UV light emitted by the UV light emitters. Micro-organisms present in the fluid pass very close to the UV light emitters. The UV light absorbed by the micro-organisms causes genetic damage and inactivation. The system has feedback units providing feedback about the physical properties of the fluid to a power unit supplying power to the UV light emitters. The power unit varies the amount of power supplied to the UV light emitters, based on the feedback.
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公开(公告)号：US20060175626A1
公开(公告)日：2006-08-10
申请号：US11053091
申请日：2005-02-07
申请人： Franklin Wall
发明人： Franklin Wall
IPC分类号： H01L33/00
CPC分类号： H01L33/60 , F21S41/141 , F21Y2115/10 , H01L33/58
摘要： A beam shutter is disclosed that is affixed to an LED die submount or circuit board to sharply define the emitted pattern. The beam shutter may be a solid piece of aluminum or any other opaque material to block a portion of the light emitted from the LED die. The beam shutter is particularly advantageous for shaping the LED light for car headlamps.
摘要翻译： 公开了一种光束快门，其被固定到LED管芯基座或电路板上以锐利地限定所发射的图案。 光束快门可以是实心的铝片或任何其他不透明材料，以阻挡从LED管芯发射的光的一部分。 光束快门对于汽车前照灯的LED灯的成形特别有利。
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公开(公告)号：US07053419B1
公开(公告)日：2006-05-30
申请号：US09660317
申请日：2000-09-12
申请人： Michael D. Camras , Michael R. Krames , Wayne L. Snyder , Frank M. Steranka , Robert C. Taber , John J. Uebbing , Douglas W. Pocius , Troy A. Trottier , Christopher H. Lowery , Gerd O. Mueller , Regina B. Mueller-Mach
发明人： Michael D. Camras , Michael R. Krames , Wayne L. Snyder , Frank M. Steranka , Robert C. Taber , John J. Uebbing , Douglas W. Pocius , Troy A. Trottier , Christopher H. Lowery , Gerd O. Mueller , Regina B. Mueller-Mach
IPC分类号： H01L33/00
CPC分类号： H01L33/58 , H01L33/20 , H01L33/505 , H01L2933/0058
摘要： Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent lens having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent lens to a light emitting device having a stack of layers including semiconductor layers comprising an active region includes elevating a temperature of the lens and the stack and applying a pressure to press the lens and the stack together. Bonding a high refractive index lens to a light emitting device improves the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection. Advantageously, this improvement can be achieved without the use of an encapsulant.
摘要翻译： 提供了具有提高光提取效率的发光器件。 发光器件具有包括有源区的半导体层的一叠层。 叠层结合到具有由有源区发射的光的折射率的透明透镜，优选大于约1.5，更优选大于约1.8。 将透明透镜粘合到具有包括有源区的半导体层的层叠的发光器件的方法包括提高透镜和叠层的温度并施加压力以将透镜和叠层压在一起。 将高折射率透镜粘合到发光器件通过减少由于全内反射引起的损耗来提高发光器件的光提取效率。 有利地，可以在不使用密封剂的情况下实现这种改进。
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公开(公告)号：US20060102914A1
公开(公告)日：2006-05-18
申请号：US11093961
申请日：2005-03-29
申请人： Willem Smits , Robert Hendriks , Grigoriy Basin , Frans Konijn , Robert West , Paul Martin , Gerard Harbers
发明人： Willem Smits , Robert Hendriks , Grigoriy Basin , Frans Konijn , Robert West , Paul Martin , Gerard Harbers
IPC分类号： H01L33/00 , H01L29/22 , H01L29/227
CPC分类号： H01L33/58 , G02B19/0028 , G02B19/0066 , G02B19/0071 , H01L33/46 , H01L33/504 , H01L33/507 , H01L33/54 , H01L33/60 , H01L2224/13 , H01L2224/48091 , H01L2224/73265 , H01L2924/00014
摘要： Lenses and certain fabrication techniques are described. A wide-emitting lens refracts light emitted by an LED die to cause a peak intensity to occur within 50-80 degrees off the center axis and an intensity along the center axis to be between 5% and 33% of the peak intensity. The lens is particularly useful in a LCD backlighting application. In one embodiment, the lens is affixed to the backplane on which the LED die is mounted and surrounds the LED die. The lens has a hollow portion that forms an air gap between the LED die and the lens, where the light is bent towards the sides both at the air gap interface and the outer lens surface interface. The lens may be a secondary lens surrounding an interior lens molded directly over the LED die.
摘要翻译： 描述镜片和某些制造技术。 宽发射透镜折射由LED管芯发射的光，使峰强度发生在离中心轴50-80度以内，沿着中心轴的强度在峰值强度的5％至33％之间。 镜头在LCD背光应用中特别有用。 在一个实施例中，透镜固定到其上安装有LED管芯的背板上，并且围绕LED管芯。 透镜具有中空部分，其在LED管芯和透镜之间形成气隙，其中光在气隙界面和外透镜表面界面处朝向侧面弯曲。 透镜可以是围绕直接模制在LED芯片上的内部透镜的次级透镜。
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57.发明授权公开(公告)号：US06987613B2
公开(公告)日：2006-01-17
申请号：US09823841
申请日：2001-03-30
IPC分类号： G02B27/44
摘要： Provided is a light emitting device including a Fresnel lens and/or a holographic diffuser formed on a surface of a semiconductor light emitter for improved light extraction, and a method for forming such light emitting device. Also provided is a light emitting device including an optical element stamped on a surface for improved light extraction and the stamping method used to form such device. An optical element formed on the surface of a semiconductor light emitter reduces reflective loss and loss due to total internal reflection, thereby improving light extraction efficiency. A Fresnel lens or a holographic diffuser may be formed on a surface by wet chemical etching or dry etching techniques, such as plasma etching, reactive ion etching, and chemically-assisted ion beam etching, optionally in conjunction with a lithographic technique. In addition, a Fresnel lens or a holographic diffuser may be milled, scribed, or ablated into the surface. Stamping, an alternative method for forming an optical element, can also be used to form a Fresnel lens or a holographic diffuser on the surface of a semiconductor light emitter. Stamping includes pressing a stamping block against the surface of a light emitting diode. The stamping block has a shape and pattern that are the inverse of the desired optical element. Optionally, stamping can be done before, after, or concurrently with wafer-bonding. Alternatively, a material can be stamped and later bonded to the semiconductor light emitter.
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58.发明授权公开(公告)号：US06956247B1
公开(公告)日：2005-10-18
申请号：US10855292
申请日：2004-05-26
申请人： Stephen A. Stockman
发明人： Stephen A. Stockman
IPC分类号： H01L33/44 , H01L33/50 , H01L33/58 , H01L31/0232
CPC分类号： H01L33/50 , H01L33/44 , H01L33/504 , H01L33/508 , H01L2933/0083
摘要： A light emitting structure includes a semiconductor light emitting device capable of emitting first light having a first peak wavelength, a luminescent material capable of emitting second light having a second peak wavelength disposed over the semiconductor light emitting device, and a photonic band gap material disposed between the light emitting device and the luminescent material. The photonic band gap material is capable of transmitting the first light and reflecting the second light, regardless of the angle of incidence of the first and second light.
摘要翻译： 发光结构包括能够发射具有第一峰值波长的第一光的半导体发光器件，能够发射设置在半导体发光器件上的具有第二峰值波长的第二光的发光材料和设置在半导体发光器件之间的光子带隙材料 发光器件和发光材料。 光子带隙材料能够透射第一光并反射第二光，而与第一和第二光的入射角无关。
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59.发明授权Resonant cavity III-nitride light emitting devices fabricated by growth substrate removal 有权通过生长衬底去除制造的谐振腔III族氮化物发光器件公开(公告)号：US06956246B1
公开(公告)日：2005-10-18
申请号：US10861745
申请日：2004-06-03
CPC分类号： H01L33/465 , H01L33/007 , H01L33/0079 , H01L33/22
摘要： A semiconductor light emitting device includes an n-type region, a p-type region, and light emitting region disposed between the n- and p-type regions. The n-type, p-type, and light emitting regions form a cavity having a top surface and a bottom surface. Both the top surface and the bottom surface of the cavity may have a rough surface. For example, the surface may have a plurality of peaks separated by a plurality of valleys. In some embodiments, the thickness of the cavity is kept constant by incorporating an etch-stop layer into the device, then thinning the layers of the device by a process that terminates on the etch-stop layer.
摘要翻译： 半导体发光器件包括n型区域，p型区域和设置在n型区域和p型区域之间的发光区域。 n型，p型和发光区形成具有顶表面和底表面的空腔。 空腔的顶表面和底表面都可以具有粗糙的表面。 例如，表面可以具有由多个谷分隔的多个峰。 在一些实施例中，通过将蚀刻停止层并入该器件中，使空腔的厚度保持恒定，然后通过终止于蚀刻停止层上的工艺使器件的层变薄。
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公开(公告)号：US06946685B1
公开(公告)日：2005-09-20
申请号：US09652194
申请日：2000-08-31
申请人： Daniel A. Steigerwald , Michael J. Ludowise , Steven A. Maranowski , Serge L. Rudaz , Jerome C. Bhat
发明人： Daniel A. Steigerwald , Michael J. Ludowise , Steven A. Maranowski , Serge L. Rudaz , Jerome C. Bhat
CPC分类号： H01L33/405 , H01L33/32
摘要： Silver electrode metallization in light emitting devices is subject to electrochemical migration in the presence of moisture and an electric field. Electrochemical migration of the silver metallization to the pn junction of the device results in an alternate shunt path across the junction, which degrades efficiency of the device. In accordance with a form of this invention, a migration barrier is provided for preventing migration of metal from at least one of the electrodes onto the surface of the semiconductor layer with which the electrode is in contact.
摘要翻译： 发光器件中的银电极金属化在水分和电场的存在下经历电化学迁移。 银金属化物到器件的pn结的电化学迁移导致跨接头的交替分流路径，这降低了器件的效率。 根据本发明的形式，提供了一种迁移屏障，用于防止金属从至少一个电极移动到与电极接触的半导体层的表面上。
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