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    Color LCD with bi-color sequential backlight
    5.
    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。

    White LED for backlight with phosphor plates
    6.
    发明授权
    White LED for backlight with phosphor plates 有权
    白色LED用于带荧光板的背光

    公开(公告)号：US07682850B2

    公开(公告)日：2010-03-23

    申请号：US11378812

    申请日：2006-03-17

    申请人： Gerard Harbers ,  Serge Bierhuizen ,  Mark Pugh

    发明人： Gerard Harbers ,  Serge Bierhuizen ,  Mark Pugh

    IPC分类号： H01L21/00

    CPC分类号： H01L33/505 ,  C09K11/7774 ,  G02F1/133603 ,  G02F2001/133614 ,  H01L33/504 ,  H01L2224/16225 ,  H01L2933/0041 ,  Y02B20/181

    摘要： A white light LED for use in backlighting or otherwise illuminating an LCD is described where the white light LED comprises a blue LED over which is affixed a preformed red phosphor platelet and a preformed green phosphor platelet. In one embodiment, to form a platelet, a controlled amount of phosphor powder is placed in a mold and heated under pressure to sinter the grains together. The platelet can be made very smooth on all surfaces. A UV LED may also be used in conjunction with red, green, and blue phosphor plates. The LED dies vary in color and brightness and are binned in accordance with their light output characteristics. Phosphor plates with different characteristics are matched to the binned LEDs to create white light LEDs with a consistent white point for use in backlights for liquid crystal displays.

    摘要翻译： 描述了用于背光或以其他方式照明LCD的白光LED，其中白光LED包括蓝色LED，其上附着预先形成的红色荧光体片和预制的绿色荧光体片。 在一个实施方案中，为了形成血小板，将受控量的荧光体粉末放置在模具中并在压力下加热以将颗粒烧结在一起。 血小板可以在所有表​​面上非常光滑。 UV LED也可以与红色，绿色和蓝色荧光体板一起使用。 LED管芯的颜色和亮度不同，并根据其光输出特性进行分样。 具有不同特性的荧光板与分箱LED匹配，以创建白光LED，并具有用于液晶显示器背光源的一致白点。

    Thin Luminaire for General Lighting Applications
    8.
    发明申请
    Thin Luminaire for General Lighting Applications 有权
    一般照明应用薄型灯具

    公开(公告)号：US20080304250A1

    公开(公告)日：2008-12-11

    申请号：US11758952

    申请日：2007-06-06

    申请人： Gerard Harbers ,  Serge Bierhuizen

    发明人： Gerard Harbers ,  Serge Bierhuizen

    IPC分类号： F21V7/00 ,  F21V9/16

    CPC分类号： F21V11/14 ,  F21S8/04 ,  F21V5/04 ,  F21V7/0008 ,  F21V7/0091 ,  F21V15/01 ,  F21Y2103/10 ,  F21Y2115/10

    摘要： High power white light LEDs are distributed within a thin reflective cavity. The cavity depth may be less than 3 cm and, in one embodiment, is about 1 cm. A light output surface of the cavity is a flat reflector with many small openings. A small plastic lens is positioned over each opening for causing the light emitted from each opening to form a cone of light between approximately 50-75 degrees. Alternatively, each hole may be shaped to be a truncated cone to control the dispersion. The light emitted by the LEDs is mixed in the cavity by reflecting off all six reflective walls of the cavity. The light will ultimately escape through the many holes, forming a relatively uniform pattern of light on a surface to be illuminated by the luminaire.

    摘要翻译： 大功率白光LED分布在薄反射腔内。 腔深度可以小于3cm，在一个实施例中，为约1cm。 空腔的光输出表面是具有许多小开口的平面反射器。 一个小的塑料透镜位于每个开口上方，用于使从每个开口发射的光形成大约50-75度之间的光。 或者，每个孔可以被成形为截锥，以控制分散。 LED发射的光通过反射空腔的所有六个反射壁而混合在空腔中。 光将最终通过许多孔逃逸，在由照明器照明的表面上形成相对均匀的光线图案。

    Multi-color primary light generation in a projection system using LEDs
    10.
    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。