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    Low profile side emitting LED
    3.
    发明授权
    Low profile side emitting LED 有权
    薄型侧发光LED

    公开(公告)号：US07626210B2

    公开(公告)日：2009-12-01

    申请号：US11423419

    申请日：2006-06-09

    申请人： Oleg Borisovich Shchekin ,  Mark Pugh ,  Gerard Harbers ,  Michael R. Krames ,  John E. Epler

    发明人： Oleg Borisovich Shchekin ,  Mark Pugh ,  Gerard Harbers ,  Michael R. Krames ,  John E. Epler

    IPC分类号： H01L29/20

    CPC分类号： H01L33/50 ,  H01L33/22 ,  H01L33/38 ,  H01L33/46 ,  H01L33/60 ,  H01L2224/13

    摘要： Low profile, side-emitting LEDs are described, where all light is efficiently emitted within a relatively narrow angle generally parallel to the surface of the light-generating active layer. The LEDs enable the creation of very thin backlights for backlighting an LCD. In one embodiment, the LED is a flip chip with the n and p electrodes on the same side of the LED, and the LED is mounted electrode-side down on a submount. A reflector is provided on the top surface of the LED so that light impinging on the reflector is reflected back toward the active layer and eventually exits through a side surface of the LED. A waveguide layer and/or one or more phosphors layers are deposed between the semiconductor layers and the reflector for increasing the side emission area for increased efficiency. Side-emitting LEDs with a thickness of between 0.2-0.4 mm can be created.

    摘要翻译： 描述了低侧面发光LED，其中所有光在与发光有源层的表面大致平行的相对窄的角度内被有效地发射。 LED使得能够创建非常薄的背光用于背光LCD。 在一个实施例中，LED是倒装芯片，其中n和p电极位于LED的同一侧，并且LED电极侧朝下安装在底座上。 在LED的顶表面上提供反射器，使得入射在反射器上的光被反射回有源层，最终通过LED的侧表面离开。 在半导体层和反射器之间布置波导层和/或一个或多个磷光体层以增加侧面发射面积以提高效率。 可以产生厚度在0.2-0.4mm之间的侧面发射LED。

    Low Profile Side Emitting LED
    4.
    发明申请
    Low Profile Side Emitting LED 有权
    低边侧发光LED

    公开(公告)号：US20070284600A1

    公开(公告)日：2007-12-13

    申请号：US11423419

    申请日：2006-06-09

    申请人： Oleg Borisovich Shchekin ,  Mark Pugh ,  Gerard Harbers ,  Michael R. Krames ,  John E. Epler

    发明人： Oleg Borisovich Shchekin ,  Mark Pugh ,  Gerard Harbers ,  Michael R. Krames ,  John E. Epler

    IPC分类号： H01L33/00

    CPC分类号： H01L33/50 ,  H01L33/22 ,  H01L33/38 ,  H01L33/46 ,  H01L33/60 ,  H01L2224/13

    摘要： Low profile, side-emitting LEDs are described, where all light is efficiently emitted within a relatively narrow angle generally parallel to the surface of the light-generating active layer. The LEDs enable the creation of very thin backlights for backlighting an LCD. In one embodiment, the LED is a flip chip with the n and p electrodes on the same side of the LED, and the LED is mounted electrode-side down on a submount. A reflector is provided on the top surface of the LED so that light impinging on the reflector is reflected back toward the active layer and eventually exits through a side surface of the LED. A waveguide layer and/or one or more phosphors layers are deposed between the semiconductor layers and the reflector for increasing the side emission area for increased efficiency. Side-emitting LEDs with a thickness of between 0.2-0.4 mm can be created.

    摘要翻译： 描述了低侧面发光LED，其中所有光在与发光有源层的表面大致平行的相对窄的角度内被有效地发射。 LED使得能够创建非常薄的背光用于背光LCD。 在一个实施例中，LED是倒装芯片，其中n和p电极位于LED的同一侧，并且LED电极侧朝下安装在底座上。 在LED的顶表面上提供反射器，使得入射在反射器上的光被反射回有源层，最终通过LED的侧表面离开。 在半导体层和反射器之间布置波导层和/或一个或多个磷光体层以增加侧面发射面积以提高效率。 可以产生厚度在0.2-0.4mm之间的侧面发射LED。

    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.
    发明申请
    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：US20070215890A1

    公开(公告)日：2007-09-20

    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： H01L33/00

    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。

    White LED for backlight with phosphor plates
    7.
    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。

    Backlight using LED parallel to light guide surface
    8.
    发明授权
    Backlight using LED parallel to light guide surface 有权
    背光使用LED平行于导光面

    公开(公告)号：US08061884B2

    公开(公告)日：2011-11-22

    申请号：US12171228

    申请日：2008-07-10

    申请人： Gerard Harbers ,  Mark Pugh ,  Serge Bierhuizen

    发明人： Gerard Harbers ,  Mark Pugh ,  Serge Bierhuizen

    IPC分类号： F21V7/04

    CPC分类号： G02B6/002 ,  G02B6/0016 ,  G02B6/0025 ,  G02B6/0031 ,  G02B6/0068 ,  G02B6/0091

    摘要： Various embodiments of corner-coupled backlights are described, where one or more white light LEDs are optically coupled to a truncated corner edge of a solid rectangular light guide backlight. The one or more LEDs are mounted in a small reflective cavity, whose output opening is coupled to the truncated corner of the light guide. The reflective cavity provides a more uniform light distribution at a wide variety of angles to the face of the truncated corner to better distribute light throughout the entire light guide volume. To enable a thinner light guide, the LED die is positioned in the reflective cavity so that the major light emitting surface of the LED is parallel to the top surface of the light guide. The reflective cavity reflects the upward LED light toward the edge of the light guide.

    摘要翻译： 描述角落耦合背光灯的各种实施例，其中一个或多个白光LED光学耦合到实心矩形导光背光的截头角边缘。 一个或多个LED安装在小反射腔中，其输出开口连接到导光体的截头角。 反射腔提供与截顶角的多种角度更均匀的光分布，以更好地在整个导光体积上分配光。 为了实现更薄的光导，LED管芯位于反射腔中，使得LED的主要发光表面平行于光导的顶表面。 反射腔将向上的LED光朝向光导的边缘反射。

    Backlight Using LED Parallel to Light Guide Surface
    9.
    发明申请
    Backlight Using LED Parallel to Light Guide Surface 有权
    背光使用LED平行于光导表面

    公开(公告)号：US20080266900A1

    公开(公告)日：2008-10-30

    申请号：US12171228

    申请日：2008-07-10

    申请人： Gerard Harbers ,  Mark Pugh ,  Serge Bierhuizen

    发明人： Gerard Harbers ,  Mark Pugh ,  Serge Bierhuizen

    IPC分类号： F21V8/00

    CPC分类号： G02B6/002 ,  G02B6/0016 ,  G02B6/0025 ,  G02B6/0031 ,  G02B6/0068 ,  G02B6/0091

    摘要： Various embodiments of corner-coupled backlights are described, where one or more white light LEDs are optically coupled to a truncated corner edge of a solid rectangular light guide backlight. The one or more LEDs are mounted in a small reflective cavity, whose output opening is coupled to the truncated corner of the light guide. The reflective cavity provides a more uniform light distribution at a wide variety of angles to the face of the truncated corner to better distribute light throughout the entire light guide volume. To enable a thinner light guide, the LED die is positioned in the reflective cavity so that the major light emitting surface of the LED is parallel to the top surface of the light guide. The reflective cavity reflects the upward LED light toward the edge of the light guide.

    摘要翻译： 描述角落耦合背光灯的各种实施例，其中一个或多个白光LED光学耦合到实心矩形导光背光的截头角边缘。 一个或多个LED安装在小反射腔中，其输出开口连接到导光体的截头角。 反射腔提供与截顶角的多种角度更均匀的光分布，以更好地在整个导光体积上分配光。 为了实现更薄的光导，LED管芯位于反射腔中，使得LED的主要发光表面平行于光导的顶表面。 反射腔将向上的LED光朝向光导的边缘反射。

    Backlight Using High-Powered Corner LED
    10.
    发明申请
    Backlight Using High-Powered Corner LED 审中-公开
    背光使用高功率转角LED

    公开(公告)号：US20080049445A1

    公开(公告)日：2008-02-28

    申请号：US11467499

    申请日：2006-08-25

    申请人： Gerard Harbers ,  Mark Pugh ,  Serge Bierhuizen

    发明人： Gerard Harbers ,  Mark Pugh ,  Serge Bierhuizen

    IPC分类号： F21V7/04

    CPC分类号： G02B6/002 ,  G02B6/0016 ,  G02B6/0025 ,  G02B6/0031 ,  G02B6/0068 ,  G02B6/0091

    摘要： Various embodiments of corner-coupled backlights are described, where one or more LEDs are optically coupled to a truncated corner of a solid rectangular light guide backlight. In one embodiment, a high-power, white light LED is mounted in a small reflective cavity, which is then coupled to a flattened corner of the light guide. The reflective cavity provides a more uniform light distribution at a wide variety of angles to the face of the truncated corner to better distribute light throughout the entire light guide volume. This creates a more uniform light guide emission into the liquid crystal layers. In other embodiments, an LED is mounted in a small cavity near a corner of the light guide, and a reflector is mounted on the corner of the light guide. Various techniques for removing heat from the LED without adding additional area requirements are also disclosed.

    摘要翻译： 描述了拐角耦合背光灯的各种实施例，其中一个或多个LED光学耦合到实心矩形导光背光的截头角。 在一个实施例中，高功率白光LED安装在小反射腔中，然后将其耦合到光导的平坦角。 反射腔提供与截顶角的多种角度更均匀的光分布，以更好地在整个导光体积上分配光。 这产生了更均匀的光导发射到液晶层。 在其他实施例中，LED被安装在靠近光导的拐角处的小腔中，并且反射器安装在光导的角部。 还公开了用于从LED中除去热量而不增加额外面积要求的各种技术。