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    Thin backlight using low profile side emitting LEDS
    3.
    发明授权
    Thin backlight using low profile side emitting LEDS 有权
    薄背光采用低边侧发光LED

    公开(公告)号：US08109644B2

    公开(公告)日：2012-02-07

    申请号：US12760612

    申请日：2010-04-15

    申请人： Serge Bierhuizen

    发明人： Serge Bierhuizen

    IPC分类号： G09F13/04

    CPC分类号： G02B6/0021 ,  G02B6/0018 ,  G02B6/0023 ,  G02B6/0031 ,  G02B6/0065 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0083 ,  G02F1/133603 ,  G02F1/133615 ,  H01L2224/14

    摘要： Backlights containing low profile, side-emitting LEDs are described that have improved brightness uniformity. In one embodiment, the backlight comprises a solid transparent lightguide with a plurality of openings in a bottom surface of the lightguide, each opening containing a side-emitting LED. Prisms or other optical features are formed in the top wall of each opening to reflect light in the lightguide towards a light output surface of the lightguide so that the side-emitting LEDs do not appear as dark spots at the output of the backlight. To avoid any direct emission from the sides of the LED toward the output surface of the lightguide appearing as bright areas, optical features are formed at the edges of the opening or in the output surface of the lightguide so that direct emission light is not output from the lightguide. Substantially identical cells may be formed in the lightguide using cellular walls around one or more LEDs.

    摘要翻译： 描述了具有改进的亮度均匀性的背光源，其包含低轮廓侧发光LED。 在一个实施例中，背光包括在光导的底表面中具有多个开口的固体透明光导，每个开口包含侧发光LED。 棱镜或其他光学特征形成在每个开口的顶壁中以将光导中的光朝向光导的光输出表面反射，使得侧向发射的LED在背光的输出处不会出现为暗点。 为了避免从LED的侧面朝着作为亮区域的光导的输出表面的任何直接发射，在光导的开口的边缘或输出表面中形成光学特征，使得直接发射光不从 光导。 可以使用围绕一个或多个LED的细胞壁在光导中形成基本相同的细胞。

    WHITE POINT COMPENSATED LEDS FOR LCD DISPLAYS
    4.
    发明申请
    WHITE POINT COMPENSATED LEDS FOR LCD DISPLAYS 有权
    用于LCD显示屏的白点补偿LED

    公开(公告)号：US20100065864A1

    公开(公告)日：2010-03-18

    申请号：US12212991

    申请日：2008-09-18

    申请人： Marcus J. H. KESSELS ,  Willem Sillevis SMITT ,  Gerd MUELLER ,  Serge BIERHUIZEN

    发明人： Marcus J. H. KESSELS ,  Willem Sillevis SMITT ,  Gerd MUELLER ,  Serge BIERHUIZEN

    IPC分类号： H01L33/00 ,  H01L21/00

    CPC分类号： G02F1/133609 ,  G02F1/133603 ,  G02F2001/133614

    摘要： A backlight for a color LCD includes white light LEDs formed using a blue LED die with a layer of red and green phosphors over it. The attenuation by the LCD layers of the blue light component of the white light is typically greater as the blue wavelength becomes shorter. In order to achieve a uniform blue color component across the surface of an LCD screen and achieve uniform light output from one LCD to another, the blue light leakage of the phosphor layer is tailored to the dominant or peak wavelength of the blue LED die. Therefore, the white points of the various white light LEDs in a backlight should not match when blue LED dies having different dominant or peak wavelengths are used in the backlight. The different leakage amounts through the tailored phosphor layers offset the attenuation vs. wavelength of the LCD layers.

    摘要翻译： 用于彩色LCD的背光包括使用蓝色LED芯片形成的白光LED，其上具有红色和绿色磷光体层。 由于蓝色波长变短，白色光的蓝色分量的LCD层的衰减通常较大。 为了在LCD屏幕的表面上实现均匀的蓝色分量并且实现从一个LCD到另一个LCD的均匀的光输出，荧光体层的蓝色光泄漏被调整为蓝色LED管芯的主要或峰值波长。 因此，背光源中的各种白光LED的白点在背光源中使用具有不同的主峰或峰值波长的蓝色LED芯片时不应该匹配。 通过定制的荧光体层的不同泄漏量抵消了LCD层的衰减与波长的关系。

    Color LCD with bi-color sequential backlight
    6.
    发明申请
    Color LCD with bi-color sequential backlight 有权
    彩色LCD双色顺序背光

    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。

    LED lamp producing sparkle
    8.
    发明授权
    LED lamp producing sparkle 有权
    LED灯产生闪耀

    公开(公告)号：US08033691B2

    公开(公告)日：2011-10-11

    申请号：US12464486

    申请日：2009-05-12

    申请人： Serge Bierhuizen ,  Mark Butterworth

    发明人： Serge Bierhuizen ,  Mark Butterworth

    IPC分类号： F21V5/00

    CPC分类号： H01L33/58 ,  F21K9/23 ,  F21V5/04 ,  F21V7/0091 ,  F21W2121/00 ,  F21Y2115/10 ,  G02B19/0014 ,  G02B19/0061 ,  H01L33/486 ,  H01L2924/0002 ,  H01L2924/00

    摘要： A substantially hemispherical lens surrounding an LED die is described that creates a sparkle as an observer views the lens from different angles. The lens is formed of an interconnected array of 100-10,000 or more lenslets. Each lenslet focuses an image of the LED die at an output of the lenslet such that the LED die image area at the output is less than 1/9 the area of the LED die to create a substantially point source image of the LED die at an outer surface of the lens. When the LED die is energized, the shape of each lenslet causes point source images of the LED die to be perceived by an observer at various viewing angles, such that the emitted LED light appears to sparkle and speckle as the observer moves relative to the lens.

    摘要翻译： 描述围绕LED管芯的基本上半球形的透镜，当观察者从不同的角度观察透镜时产生闪光。 透镜由100至10,000个或更多个小透镜的相互连接的阵列形成。 每个小透镜将LED芯片的图像聚焦在小透镜的输出处，使得输出处的LED芯片图像区域小于LED管芯的面积的1/9，以在LED模具的基础上形成基本上点的源模式图像 透镜的外表面。 当LED管芯通电时，每个小透镜的形状使得LED管芯的点源图像被观察者以各种视角感知，使得发射的LED光看起来像观察者相对于透镜移动一样闪烁和斑点 。

    Multi-color primary light generation in a projection system using LEDs
    9.
    发明授权
    Multi-color primary light generation in a projection system using LEDs 有权
    在使用LED的投影系统中的多色初级光产生

    公开(公告)号：US07766490B2

    公开(公告)日：2010-08-03

    申请号：US11610449

    申请日：2006-12-13

    申请人： Gerard Harbers ,  Serge Bierhuizen

    发明人： Gerard Harbers ,  Serge Bierhuizen

    IPC分类号： G03B21/26

    CPC分类号： H04N9/3155 ,  G03B21/2013 ,  G03B33/10 ,  H04N9/3105 ,  H04N9/3111 ,  H04N9/315

    摘要： Amber light LEDs have a higher luminance than red light LEDs. A vast majority of images displayed on television consists of colors that can be created using amber, green and blue components, with only a small percentage of red. In one embodiment of the present invention, the typically red primary light source in a projection display system is augmented with an amber light source. Green and blue primary light sources are also provided. All the light sources are high power LEDs. The particular mixture of the red and amber light is accomplished by varying the duty cycles of the red LEDs and the amber LEDs. If the RGB image to be displayed can be created using a higher percentage of amber light and a lower percentage of red light, the duty cycle of the amber LEDs is increased while the duty cycle of the red LEDs is decreased. Light/pixel modulators for creating the full color image from the three primary light sources are controlled to compensate for the variable amber/red mixture. This technique improves the efficiency of the projection system and generates less heat. A further increase in luminance can be achieved by controlling the light mixture from green and cyan LEDs as a primary light source and/or by controlling the light mixture from blue and blue-cyan LEDs as a primary light source.

    摘要翻译： 琥珀色LED具有比红色LED更高的亮度。 电视上显示的绝大多数图像包括可以使用琥珀色，绿色和蓝色组件创建的颜色，只有少量的红色。 在本发明的一个实施例中，投影显示系统中的典型的红色一次光源用琥珀色光源增强。 还提供绿色和蓝色的初级光源。 所有的光源都是大功率LED。 通过改变红色LED和琥珀色LED的占空比来实现红色和琥珀色光的特定混合。 如果可以使用更高百分比的琥珀色光和较低百分比的红光来创建要显示的RGB图像，则红色LED的占空比减小时，琥珀色LED的占空比将增加。 用于从三个主要光源产生全色图像的光/像素调制器被控制以补偿可变的琥珀色/红色混合物。 这种技术提高了投影系统的效率并产生较少的热量。 通过控制来自绿色和青色LED的光混合物作为主要光源和/或通过控制来自蓝色和蓝色 - 青色LED的光混合物作为主要光源，可以进一步提高亮度。