公开(公告)号：US20040252255A1

公开(公告)日：2004-12-16

申请号：US10801807

申请日：2004-03-15

申请人： Lumileds Lighting U.S. LLC

发明人： Wiepke Folkerts

IPC分类号： G02F001/1335

CPC分类号： G02F1/133615

摘要： A structure that may be used as a backlight for a liquid crystal display includes a light source and an optical waveguide. The optical waveguide is illuminated by the light source from an edge of the optical waveguide. The optical waveguide has a plurality of adjacent areas for illuminating corresponding parts of a liquid crystal panel. Each of the areas is provided with an independently controllable light source for illuminating the area.

摘要翻译： 可以用作液晶显示器的背光源的结构包括光源和光波导。 光波导由光波导从光波导的边缘照射。 光波导具有用于照射液晶面板的相应部分的多个相邻区域。 每个区域设置有用于照亮该区域的独立可控的光源。

公开(公告)号：US20040227869A1

公开(公告)日：2004-11-18

申请号：US10810169

申请日：2004-03-25

申请人： Lumileds Lighting U.S., LLC

发明人： Youri Martynov ,  Johannes Willem Herman Sillevis Smitt ,  Gibbo Johannes Abrahamse ,  Wilhelmus Adrianus Gerardus Timmers

IPC分类号： G02F001/1335

CPC分类号： G02B6/0033 ,  G02F1/133609 ,  G02F1/133615 ,  G02F1/133621 ,  G02F2001/133613

摘要： A backlight illumination system for illuminating a large area with light of a uniform color has a set of a pre-determined number of light emitters arranged along a straight line. The set is divided in a plurality of subsets, each subset including at least two light emitters. Each subset comprises light emitters with substantially the same light-emission color point, the respective subsets having color points different from each other. As a first step, the light emitters of the subset with a smallest number of light emitters are assigned to respective substantially equidistant positions. The light emitters of the set are assigned to the respective positions by iteratively starting with the subset with the smallest number of light emitters, assigning the light emitters of the subset to substantially equidistant positions which are not yet occupied. The backlight illumination system according to the invention has a uniform light and color distribution.

摘要翻译： 用于以均匀颜色的光照射大面积的背光照明系统具有沿着直线布置的一组预定数量的发光体。 该组被分成多个子集，每个子​​集包括至少两个发光器。 每个子集包括具有基本上相同的发光色点的发光体，各个子集具有彼此不同的色点。 作为第一步骤，具有最少数量的发光体的子集的发光体被分配到相应的基本上等距的位置。 通过以具有最少数量的发光体的子集反复地开始，将集合的发光体分配给各个位置，将子集的发光体分配给尚未被占用的基本上等距离的位置。 根据本发明的背光照明系统具有均匀的光和颜色分布。

公开(公告)号：US20040145320A1

公开(公告)日：2004-07-29

申请号：US10726854

申请日：2003-12-02

申请人： Lumileds Lighting U.S., LLC

发明人： Engbert Bernard Gerard Nijhof ,  Marcel Johannes Maria Bucks ,  Johannes Matheus Theodorus Lambertus Claessens ,  Jozef Petrus Emanuel De Krijger

IPC分类号： H01K001/62

CPC分类号： H05B33/0815 ,  H05B33/0851 ,  Y02B20/346

摘要： In a lighting arrangement comprising a LED array and a DC-DC-converter for supplying the LED array, the DC-DC-converter is an up-converter and the LED array is coupled between an input terminal and an output terminal. The up-converter generates a very low voltage over the LED array without making use of a transformer.

摘要翻译： 在包括用于提供LED阵列的LED阵列和DC-DC转换器的照明装置中，DC-DC转换器是上转换器，并且LED阵列耦合在输入端子和输出端子之间。 上变频器在不使用变压器的情况下，在LED阵列上产生非常低的电压。

公开(公告)号：US20040130518A1

公开(公告)日：2004-07-08

申请号：US10684066

申请日：2003-10-09

申请人： Lumileds Lighting U.S., LLC

发明人： Jozef Petrus Emanuel De Krijger ,  Armand Boudewijn Perduijn ,  Engbert Bernard Gerard Nijhof ,  Marcel Johannes Maria Bucks

IPC分类号： G09G003/32

CPC分类号： G09G3/3413 ,  G09G2320/0666 ,  H05B33/086

摘要： In a circuit arrangement for driving a LED array comprising red, green and blue LEDs, a control loop is added for limiting the duty cycles of the control signals for driving the red, green and blue LEDs. In case one of the duty cycles reaches the limit value, the reference signals for the red, green and blue light are decreased with the same relative amount. The color point of the light is thereby maintained, even when the efficiency of part of the LEDs decreases.

摘要翻译： 在用于驱动包括红色，绿色和蓝色LED的LED阵列的电路装置中，添加了控制环路，用于限制用于驱动红色，绿色和蓝色LED的控制信号的占空比。 在一个占空比达到极限值的情况下，红色，绿色和蓝色光的参考信号以相同的相对量减少。 因此，即使当部分LED的效率降低时，光的色点也被保持。

公开(公告)号：US20030020085A1

公开(公告)日：2003-01-30

申请号：US09912589

申请日：2001-07-24

申请人： LumiLeds Lighting, U.S., LLC

发明人： David P. Bour ,  Nathan F. Gardner ,  Werner K. Goetz ,  Stephen A. Stockman ,  Tetsuya Takeuchi ,  Ghulam Hasnain ,  Christopher P. Kocot ,  Mark R. Hueschen

IPC分类号： H01L033/00

CPC分类号： H01L33/32 ,  H01L33/06

摘要： A light emitting device in accordance with an embodiment of the present invention includes a first semiconductor layer of a first conductivity type having a first surface, and an active region formed overlying the first semiconductor layer. The active region includes a second semiconductor layer which is either a quantum well layer or a barrier layer. The second semiconductor layer is formed from a semiconductor alloy having a composition graded in a direction substantially perpendicular to the first surface of the first semiconductor layer. The light emitting device also includes a third semiconductor layer of a second conductivity type formed overlying the active region.

摘要翻译： 根据本发明的实施例的发光器件包括具有第一表面的第一导电类型的第一半导体层和形成在第一半导体层上的有源区。 有源区包括作为量子阱层或阻挡层的第二半导体层。 第二半导体层由具有在基本上垂直于第一半导体层的第一表面的方向分级的成分的半导体合金形成。 发光器件还包括形成在有源区上的第二导电类型的第三半导体层。

公开(公告)号：US20040079942A1

公开(公告)日：2004-04-29

申请号：US10283737

申请日：2002-10-29

申请人： Lumileds Lighting, U.S., LLC

发明人： Frank M. Steranka ,  Daniel A. Steigerwald

IPC分类号： H01L029/76 ,  H01L031/036

CPC分类号： H01L33/58 ,  H01L33/46 ,  H01L33/60

摘要： The amount of usefully captured light in an optical system may be increased by concentrating light in a region where it can be collected by the optical system. A light emitting device may include a substrate and a plurality of semiconductor layers. In some embodiments, a reflective material overlies a portion of the substrate and has an opening through which light exits the device. In some embodiments, reflective material overlies a portion of a surface of the semiconductor layers and has an opening through which light exits the device. In some embodiments, a light emitting device includes a transparent member with a first surface and an exit surface. At least one light emitting diode is disposed on the first surface. The transparent member is shaped such that light emitted from the light emitting diode is directed toward the exit surface.

摘要翻译： 光学系统中有效捕获的光的量可以通过将光集中在可由光学系统收集的区域中来增加。 发光器件可以包括衬底和多个半导体层。 在一些实施例中，反射材料覆盖在衬底的一部分上并且具有光从该器件离开的开口。 在一些实施例中，反射材料覆盖在半导体层的表面的一部分上并且具有光从该器件离开的开口。 在一些实施例中，发光器件包括具有第一表面和出射表面的透明构件。 至少一个发光二极管设置在第一表面上。 透明构件被成形为使得从发光二极管发射的光朝向出射表面。

公开(公告)号：US20040061810A1

公开(公告)日：2004-04-01

申请号：US10256706

申请日：2002-09-27

申请人： Lumileds Lighting, U.S., LLC

发明人： Christopher H. Lowery ,  Wim Timmers ,  J. Willem H. Sillevis Smitt

IPC分类号： G02F001/1335

CPC分类号： C09K11/7786 ,  G02F1/133603 ,  G02F2001/133614 ,  H01L2224/13

摘要： A backlight for an LCD uses as a light source at least one red light source, at lest one green light source, at least one blue light source, wherein one of the sources comprises a light emitting diode capable of emitting light at a first wavelength and a wavelength-converting material capable of absorbing light of the first wavelength and emitting light of a second wavelenght. In some embodiments, the wavelength-converting material is a strontium thiogallate phosphor or a nitridosilicate phosphor. In some embodiments, the first wavelength is about the same as light emitted by the blue light source, or is barely visible to the human eye.

摘要翻译： LCD的背光源使用至少一个红光源，至少一个绿光源，至少一个蓝光源，其中一个源包括能够发射第一波长的光的发光二极管和 能够吸收第一波长的光并发射第二波长的光的波长转换材料。 在一些实施方案中，波长转换材料是硫锑锶磷光体或氮化硅酸盐荧光体。 在一些实施例中，第一波长与由蓝色光源发射的光大致相同，或者几乎不可见人眼。

公开(公告)号：US20030227249A1

公开(公告)日：2003-12-11

申请号：US10165571

申请日：2002-06-07

申请人： Lumileds Lighting, U.S., LLC

发明人： Gerd O. Mueller ,  Regina B. Mueller-Mach ,  Dietrich Bertram ,  Thomas Juestel ,  Peter J. Schmidt ,  Joachim Opitz

IPC分类号： H01J001/62

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.

摘要翻译： 公开了发光器件，其包括发射第一光的光源，对第一光进行基本上透明并位于其中以接收第一光的至少一部分的第一材料和分散在第一材料中的第二材料的颗粒。 第二材料的折射率大于在第一光的波长处的第一材料的折射率。 第二材料的颗粒具有小于该波长的直径。 第三种材料的颗粒也可以分散在第一种材料中。

公开(公告)号：US20040256974A1

公开(公告)日：2004-12-23

申请号：US10785620

申请日：2004-02-23

申请人： Lumileds Lighting, U.S., LLC

发明人： Regina B. Mueller-Mach ,  Gerd O. Mueller ,  T. Juestel ,  W. Busselt ,  P. J. Schmidt ,  W. Mayr

IPC分类号： H01J001/62 ,  H01J063/04

CPC分类号： C09K11/7774 ,  H01L33/502

摘要： A system includes a radiation source capable of emitting first light and a fluorescent material capable of absorbing the first light and emitting second light having a different wavelength than the first light. The fluorescent material is a phosphor having the formula (Lu1-x-y-a-bYxGdy)3(Al1-zGaz)5O12:CeaPrb wherein 0

摘要翻译： 一种系统包括能够发射第一光的辐射源和能够吸收第一光并发射具有与第一光不同的波长的第二光的荧光材料。 荧光材料是具有式（Lu1-xya-bYxGdy）3（Al1-zGaz）5O12：CeaPrb的荧光体，其中0

公开(公告)号：US20020185965A1

公开(公告)日：2002-12-12

申请号：US09879547

申请日：2001-06-11

申请人： LumiLeds Lighting, U.S., LLC

发明人： William David Collins III ,  Michael R. Krames ,  Godefridus Johannes Verhoeckx ,  Nicolaas Joseph Martin van Leth

IPC分类号： H01L033/00

CPC分类号： H01L33/505 ,  H01L2224/48091 ,  H01L2924/01019 ,  H01L2924/01039 ,  H01L2924/10253 ,  H01L2924/12041 ,  H01L2924/3025 ,  H01L2924/00014 ,  H01L2924/00

摘要： A light source is disclosed that includes a light emitting device such as a III-nitride light emitting diode covered with a luminescent material structure, such as a single layer or multiple layers of phosphor. Any variations in the thickness of the luminescent material structure are less than or equal to 10% of the average thickness of the luminescent material structure. In some embodiments, the thickness of the luminescent material structure is less than 10% of a cross-sectional dimension of the light emitting device. In some embodiments, the luminescent material structure is the only luminescent material through which light emitted from the light emitting device passes. In some embodiments, the luminescent material structure is between about 15 and about 100 microns thick. The luminescent material structure is selectively deposited on the light emitting device by, for example, stenciling or electrophoretic deposition.

摘要翻译： 公开了一种光源，其包括诸如单层或多层荧光体的发光材料结构覆盖的诸如III族氮化物发光二极管的发光器件。 发光材料结构的厚度的任何变化小于或等于发光材料结构的平均厚度的10％。 在一些实施例中，发光材料结构的厚度小于发光器件的横截面尺寸的10％。 在一些实施例中，发光材料结构是通过其从发光器件发射的光通过的唯一发光材料。 在一些实施方案中，发光材料结构在约15至约100微米厚之间。 通过例如模版或电泳沉积，将发光材料结构选择性地沉积在发光器件上。