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公开(公告)号：US5525866A
公开(公告)日：1996-06-11
申请号：US369598
申请日：1995-01-06
CPC分类号： H04N1/02845 , H04N1/02815 , H05B33/12 , H05B33/22
摘要： A broadband line source that is directional, rugged, compact, spatially and temporally uniform, stable, without the need for warmup, and relatively easy to implement. The source can be in single-color or multi-color, and it can be used, for example, in a scanner. In one embodiment, the line source includes a first thin-film electroluminescent stack with at least a bottom electrode, a top electrode, and a first active film between the two electrodes. The active film generates radiation in an area that has a width and a length, with the length being larger than the width. The length of the area sets the length of the line radiation, which is substantially homogenous along the line. In another embodiment, three of such stacks are encapsulated through thin-film processes by a cap, which sits on a substrate. The cap has one side surface that is more transmissive to radiation. The generated radiation is directed by the cap to be emitted at the more transmissive side surface to produce a single-color or a multi-color line source.
摘要翻译： 宽带线路方向，坚固，紧凑，空间和时间均匀，稳定，无需预热，且相对容易实施。 源可以是单色或多色，并且可以用于例如扫描仪中。 在一个实施例中，线源包括在两个电极之间具有至少底部电极，顶部电极和第一有源膜的第一薄膜电致发光堆叠。 活性膜在具有宽度和长度的区域中产生辐射，其长度大于宽度。 该区域的长度设定线辐射的长度，其沿着该线基本均匀。 在另一个实施例中，三个这样的堆叠通过位于基板上的盖子通过薄膜工艺进行封装。 盖具有对辐射更透射的一个侧表面。 产生的辐射由帽引导以在更透射的侧表面上发射以产生单色或多色线源。
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公开(公告)号：US5598067A
公开(公告)日：1997-01-28
申请号：US479376
申请日：1995-06-07
CPC分类号： H04N1/02845 , H04N1/028 , H04N1/02885 , H05B33/12
摘要： An electroluminescent device used as an illuminating source in a scanner. The device includes at least one solid-state electroluminescent element, which has a transparent electrode with a top surface, a radiation generating stack under the transparent electrode, and a second electrode with a bottom surface under the radiation generating stack. Radiation is generated from the radiation generating stack when a selected voltage source is coupled across the electrodes. Most of the radiation generated is emitted either from the top surface or from (the top and the bottom surfaces). When the scanner scans a medium, the emitted radiation is substantially uniform at least across the top surface of the transparent electrode to create a uniform radiation source for illuminating the medium.
摘要翻译： 用作扫描仪中的照明源的电致发光器件。 该装置包括至少一个固态电致发光元件，其具有带有顶表面的透明电极，在透明电极下方的辐射产生叠层和在辐射产生叠层下方具有底表面的第二电极。 当所选择的电压源跨过电极耦合时，从辐射发生堆产生辐射。 所产生的大部分辐射是从顶表面或从顶表面和底表面发射的。 当扫描仪扫描介质时，发射的辐射至少在透明电极的顶表面上基本均匀，以产生用于照亮介质的均匀的辐射源。
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公开(公告)号：US07361938B2
公开(公告)日：2008-04-22
申请号：US10861172
申请日：2004-06-03
申请人： Gerd O. Mueller , Regina B. Mueller-Mach , Michael R. Krames , Peter J. Schmidt , Hans-Helmut Bechtel , Joerg Meyer , Jan de Graaf , Theo Arnold Kop
发明人： Gerd O. Mueller , Regina B. Mueller-Mach , Michael R. Krames , Peter J. Schmidt , Hans-Helmut Bechtel , Joerg Meyer , Jan de Graaf , Theo Arnold Kop
CPC分类号： H01L33/502 , C04B35/44 , C04B35/547 , C04B35/584 , C04B35/597 , C04B35/6268 , C04B35/64 , C04B35/645 , C04B2235/3213 , C04B2235/3217 , C04B2235/3224 , C04B2235/3225 , C04B2235/3229 , C04B2235/3286 , C04B2235/6027 , C04B2235/662 , C09K11/7774 , H01L33/007 , H01L33/0075 , H01L33/0079 , H01L33/06 , H01L33/12 , H01L33/32 , H01L33/50 , H01L33/501 , H01L33/505 , H01L33/508 , H01L33/54 , H01L33/56 , H01L33/58 , H01L33/62 , H01L33/641 , H01L33/644 , H01L2924/0002 , H01L2933/0041 , H01L2933/005 , H01L2933/0066 , H01L2933/0075 , H01L2924/00
摘要： A semiconductor light emitting device comprising a light emitting layer disposed between an n-type region and a p-type region is combined with a ceramic layer which is disposed in a path of light emitted by the light emitting layer. The ceramic layer is composed of or includes a wavelength converting material such as a phosphor. Luminescent ceramic layers according to embodiments of the invention may be more robust and less sensitive to temperature than prior art phosphor layers. In addition, luminescent ceramics may exhibit less scattering and may therefore increase the conversion efficiency over prior art phosphor layers.
摘要翻译： 包括设置在n型区域和p型区域之间的发光层的半导体发光器件与设置在由发光层发射的光的路径中的陶瓷层组合。 陶瓷层由磷光体等波长转换材料构成或包含波长转换材料。 根据本发明的实施例的发光陶瓷层可以比现有技术的荧光体层更坚固并且对温度不太敏感。 此外，发光陶瓷可能表现出更少的散射，因此可以提高现有技术荧光体层的转换效率。
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公开(公告)号：US07064355B2
公开(公告)日：2006-06-20
申请号：US09880204
申请日：2001-06-12
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 , Gloria E. Hofler
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 , Gloria E. Hofler
IPC分类号： H01L33/00
CPC分类号： H01L33/58 , H01L33/20 , H01L33/405 , H01L33/505 , H01L33/60
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 optical element 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 optical element (e.g., a lens or an optical concentrator) to a light emitting device comprising an active region includes elevating a temperature of the optical element and the stack and applying a pressure to press the optical element and the light emitting device together. A block of optical element material may be bonded to the light emitting device and then shaped into an optical element. Bonding a high refractive index optical element 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.
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公开(公告)号：US06870311B2
公开(公告)日：2005-03-22
申请号：US10165571
申请日：2002-06-07
申请人： Gerd O. Mueller , Regina B. Mueller-Mach , Dietrich Bertram , Thomas Juestel , Peter J. Schmidt , Joachim Opitz
发明人： Gerd O. Mueller , Regina B. Mueller-Mach , Dietrich Bertram , Thomas Juestel , Peter J. Schmidt , Joachim Opitz
CPC分类号： H01L33/501 , H01L33/56 , H01L2933/0091
摘要： Light-emitting devices are disclosed that comprise a light source emitting first light, a first material substantially transparent to and located to receive at least a portion of the first light, and particles of a second material dispersed in the first material. The second material has an index of refraction greater than an index of refraction of the first material at a wavelength of the first light. The particles of the second material have diameters less than about this wavelength. Particles of a third material may also be dispersed in the first material.
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公开(公告)号：US06696703B2
公开(公告)日：2004-02-24
申请号：US09405938
申请日：1999-09-27
IPC分类号： H01L3300
CPC分类号： H01L33/50 , H01L33/46 , H01L33/504 , Y10S257/918
摘要： The present invention provides a phosphor-converted LED device comprising one or more phosphor thin films that convert primary light emitted by the LED into one or more other wavelengths of light to produce light of a particular color. Each phosphor thin film comprises dopant ions that are statistically spatially distributed in such a manner that the phosphor conversion of the primary light is predictable and controlled by the concentration of the dopants and by the thickness of the thin film. Therefore, variations in the color of the light produced by phosphor-converted LED devices can be eliminated, thereby enabling uniformity in the quality of the colored light produced to be ensured. In accordance with one embodiment of the present invention, a single phosphor thin film is comprised by the LED device. The thin film converts a portion of the primary emission into yellow light while allowing a portion of the primary blue light to pass through the thin film. The primary light and the yellow light combine to produce white light. Alternatively, a plurality of phosphor thin films, each of which emits a different color of light, may be comprised in the LED device. Each of the thin films converts a portion of primary radiation into a particular color of light, e.g., red or green light. The red light, green light and the unconverted primary light combine to form white light. Alternatively, one of the thin films completely absorbs the primary radiation and converts it into blue light. This converted blue light then functions as the primary light that undergoes phosphor conversion via one or more other phosphor thin films to produce white light. One or more thin films may be used in this manner to perform phosphor conversion to produce light of colors other than white, such as green light.
摘要翻译： 本发明提供了一种磷光体转换的LED器件，其包括一个或多个荧光体薄膜，其将由LED发射的原始光转换成一个或多个其它波长的光以产生特定颜色的光。 每个荧光体薄膜包括统计学上以空间分布的掺杂剂离子，使得初级光的荧光体转换是可预测的并且由掺杂剂的浓度和薄膜的厚度控制。 因此，可以消除由磷光体转换的LED器件产生的光的颜色的变化，从而可以确保产生的着色光的质量的均匀性。 根据本发明的一个实施例，由LED器件构成单个荧光体薄膜。 薄膜将一次发射的一部分转换成黄色光，同时允许一部分蓝色蓝光通过薄膜。 主光和黄光结合产生白光。 或者，可以在LED器件中包含多个发射不同颜色的光的荧光体薄膜。 每个薄膜将一部分初级辐射转换成特定的光色，例如红色或绿色光。 红光，绿光和未转换的主光结合形成白光。 或者，一个薄膜完全吸收主辐射并将其转换成蓝光。 这种转换的蓝光然后用作经由一个或多个其它荧光体薄膜进行磷光体转换以产生白光的主要光。 可以以这种方式使用一个或多个薄膜进行磷光体转换以产生除白色以外的其它颜色的光，例如绿光。
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公开(公告)号：US06680569B2
公开(公告)日：2004-01-20
申请号：US10083314
申请日：2002-02-25
IPC分类号： H01J162
CPC分类号： H01L33/504 , H01L33/502
摘要： A light emitting device includes a light source that emits first light in response to an electrical signal, and a fluorescent layer positioned over the light source. The fluorescent layer includes a first fluorescent material which radiates second light and a second fluorescent material which radiates third light. In one embodiment, the second fluorescent material contains europium activated calcium sulfide. In another embodiment, the second fluorescent material contains europium activated nitrido-silicate. In some embodiments, the device includes a light propagation medium which transmits the first, second, and third light as composite output.
摘要翻译： 发光装置包括响应于电信号发射第一光的光源和位于光源上方的荧光层。 荧光层包括辐射第二光的第一荧光材料和辐射第三光的第二荧光材料。 在一个实施方案中，第二荧光材料含有铕激活的硫化钙。 在另一个实施方案中，第二荧光材料含有铕活化的氮化硅酸盐。 在一些实施例中，该装置包括传播第一，第二和第三光作为复合输出的光传播介质。
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公开(公告)号：US09818916B2
公开(公告)日：2017-11-14
申请号：US15254734
申请日：2016-09-01
CPC分类号： H01L33/504 , C09K11/617 , C09K11/62 , C09K11/7774 , H01L33/32 , H05B33/0857 , Y02B20/181
摘要： Phosphor-converted light emitting diodes comprising a blue or near-UV emitting semiconductor device, a yellow-green phosphor, and a red phosphor exhibit incandescent-like dimming behavior in that the Correlated Color Temperature of a white light output decreases with reduced brightness.
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9.发明授权Light emitting device including luminescent ceramic and light-scattering material 有权包括发光陶瓷和光散射材料的发光器件公开(公告)号：US07521862B2
公开(公告)日：2009-04-21
申请号：US11561859
申请日：2006-11-20
IPC分类号： H01J1/62
CPC分类号： H01L33/501 , C04B35/584 , C04B2235/3213 , C04B2235/3215 , C04B2235/3224 , C04B2235/3865 , C04B2235/3873 , C09K11/7731 , C09K11/7734 , C09K11/7774 , H01L33/44 , H01L2933/0091 , H05B33/14
摘要： A ceramic body comprising a wavelength converting material is disposed in the path of light emitted by the light emitting region of a semiconductor structure comprising a light emitting region disposed between an n-type region and a p-type region. A layer of transparent material is also disposed in the path of light emitted by the light emitting region. The transparent material may connect the ceramic body to the semiconductor structure. Particles configured to scatter light emitted by the light emitting region are disposed in the layer of adhesive material. In some embodiments the particles are phosphor; in some embodiments the particles are not a wavelength-converting material.
摘要翻译： 包括波长转换材料的陶瓷体设置在由包括设置在n型区域和p型区域之间的发光区域的半导体结构的发光区域发射的光的路径中。 透明材料层也设置在由发光区域发射的光的路径中。 透明材料可以将陶瓷体连接到半导体结构。 被配置为将由发光区域发射的光散射的颗粒设置在粘合剂材料层中。 在一些实施方案中，颗粒是磷光体; 在一些实施方案中，颗粒不是波长转换材料。
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公开(公告)号：US07462086B2
公开(公告)日：2008-12-09
申请号：US10829140
申请日：2004-04-21
IPC分类号： H01J9/00
CPC分类号： C09K11/7774 , C09K11/7731 , C09K11/7734 , H01L33/502
摘要： A semiconductor light emitting device comprising a light emitting layer configured to emit light of a first wavelength disposed between an n-type region and a p-type region is combined with a cerium-doped garnet phosphor having a wider excitation spectrum than conventional cerium-doped garnet phosphors. In some embodiments, the phosphor has a cerium concentration between about 4 mol % and about 8 mol %.
摘要翻译： 包括被配置为发射设置在n型区域和p型区域之间的第一波长的光的发光层的半导体发光器件与具有比常规铈掺杂的激发光谱更宽的铈掺杂石榴石荧光体组合 石榴石荧光粉。 在一些实施方案中，磷光体的铈浓度在约4mol％至约8mol％之间。
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