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公开(公告)号：US08026672B2
公开(公告)日：2011-09-27
申请号：US12323419
申请日：2008-11-25
申请人： Farn Hin Chen , Tak Meng Cheang , Boon Keat Tan
发明人： Farn Hin Chen , Tak Meng Cheang , Boon Keat Tan
CPC分类号： H05B33/0824
摘要： A light emitting device is disclosed herein. An embodiment of the light emitting device comprises a first plurality of light emitters comprising a first group and a second group, wherein the first group is connectable in series to the second group. A first driver is connected to the first group. A second driver is connectable to the second group. A first voltage comparator is coupled to the first driver, wherein the voltage comparator compares the voltage of the first driver to a predetermined voltage. The light emitting device is in a first state when the voltage of the first driver is below the predetermined voltage. The light emitting device is in a second state when the voltage of the first driver is greater than the predetermined voltage. The light emitting device is in the first state, the first group is connected in series with the second group to form a series circuit between the first driver and a reference voltage. When the light emitting device is in the second state, the first group is connected between the first driver and the reference voltage and the second group is connected between the second driver and the reference voltage.
摘要翻译： 本文公开了一种发光器件。 发光器件的一个实施例包括第一组多个光发射器，其包括第一组和第二组，其中第一组可与第二组串联连接。 第一个驱动程序连接到第一个组。 第二个驱动器可连接到第二组。 第一电压比较器耦合到第一驱动器，其中电压比较器将第一驱动器的电压与预定电压进行比较。 当第一驱动器的电压低于预定电压时，发光器件处于第一状态。 当第一驱动器的电压大于预定电压时，发光器件处于第二状态。 发光器件处于第一状态，第一组与第二组串联连接，以在第一驱动器和参考电压之间形成串联电路。 当发光器件处于第二状态时，第一组连接在第一驱动器和参考电压之间，第二组连接在第二驱动器和参考电压之间。
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公开(公告)号：US20100127629A1
公开(公告)日：2010-05-27
申请号：US12323419
申请日：2008-11-25
申请人： Farn Hin Chen , Tak Meng Cheang , Boon Keat Tan
发明人： Farn Hin Chen , Tak Meng Cheang , Boon Keat Tan
IPC分类号： H05B39/06
CPC分类号： H05B33/0824
摘要： A light emitting device is disclosed herein. An embodiment of the light emitting device comprises a first plurality of light emitters comprising a first group and a second group, wherein the first group is connectable in series to the second group. A first driver is connected to the first group. A second driver is connectable to the second group. A first voltage comparator is coupled to the first driver, wherein the voltage comparator compares the voltage of the first driver to a predetermined voltage. The light emitting device is in a first state when the voltage of the first driver is below the predetermined voltage. The light emitting device is in a second state when the voltage of the first driver is greater than the predetermined voltage. The light emitting device is in the first state, the first group is connected in series with the second group to form a series circuit between the first driver and a reference voltage. When the light emitting device is in the second state, the first group is connected between the first driver and the reference voltage and the second group is connected between the second driver and the reference voltage.
摘要翻译： 本文公开了一种发光器件。 发光器件的一个实施例包括第一组多个光发射器，其包括第一组和第二组，其中第一组可与第二组串联连接。 第一个驱动程序连接到第一个组。 第二个驱动器可连接到第二组。 第一电压比较器耦合到第一驱动器，其中电压比较器将第一驱动器的电压与预定电压进行比较。 当第一驱动器的电压低于预定电压时，发光器件处于第一状态。 当第一驱动器的电压大于预定电压时，发光器件处于第二状态。 发光器件处于第一状态，第一组与第二组串联连接，以在第一驱动器和参考电压之间形成串联电路。 当发光器件处于第二状态时，第一组连接在第一驱动器和参考电压之间，第二组连接在第二驱动器和参考电压之间。
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公开(公告)号：US08358263B2
公开(公告)日：2013-01-22
申请号：US12037781
申请日：2008-02-26
申请人： Joh Joh Ng , Tak Meng Cheang , Boon Keat Tan
发明人： Joh Joh Ng , Tak Meng Cheang , Boon Keat Tan
IPC分类号： G09G3/36
CPC分类号： H05B33/086 , G09G3/3413 , G09G3/3426 , G09G2320/0242 , G09G2320/0646 , G09G2360/145 , Y02B20/341
摘要： In an embodiment, the invention provides a method of color control in a backlighting system comprising a plurality of light sources, a plurality of color sensors, a plurality of PWM controllers, and a video input for receiving video data. The plurality of light sources is activated during a first operative mode to produce white light. The plurality of light sources is controlled during a second operative mode to produce white light.
摘要翻译： 在一个实施例中，本发明提供了一种背光系统中的颜色控制方法，包括多个光源，多个彩色传感器，多个PWM控制器和用于接收视频数据的视频输入。 多个光源在第一操作模式下被激活以产生白光。 在第二操作模式期间控制多个光源以产生白光。
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公开(公告)号：US20100271842A1
公开(公告)日：2010-10-28
申请号：US12429928
申请日：2009-04-24
申请人： Tak Meng Cheang , Boon Keat Tan , Scott Weitzel
发明人： Tak Meng Cheang , Boon Keat Tan , Scott Weitzel
CPC分类号： G02B6/005 , G02B6/0038
摘要： In an embodiment, the invention provides a multi-color illuminating back light structure comprising a light guide, a reflector, at least one LED and a wavelength converter material. Micro-structures are formed on a first surface of the light guide. The reflector is attached to the first surface of the light guide. A wavelength converter material is deposited on a second surface of the light guide. At least one LED is optically coupled to at least one side of the light guide. A portion of light reflected from the micro-structures and the reflector is converted into light having at least one wavelength different from the wavelength of the reflected light. The light leaving the wavelength converter material comprises light with at least first and second wavelengths.
摘要翻译： 在一个实施例中，本发明提供一种多色照明背光结构，其包括光导，反射器，至少一个LED和波长转换器材料。 微结构形成在光导的第一表面上。 反射器附接到光导的第一表面。 波长转换器材料沉积在光导的第二表面上。 至少一个LED光耦合到光导的至少一侧。 从微结构和反射器反射的光的一部分被转换成具有与反射光的波长不同的至少一个波长的光。 离开波长转换器材料的光包括具有至少第一和第二波长的光。
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公开(公告)号：US08297781B2
公开(公告)日：2012-10-30
申请号：US12429928
申请日：2009-04-24
申请人： Tak Meng Cheang , Boon Keat Tan , Scott Weitzel
发明人： Tak Meng Cheang , Boon Keat Tan , Scott Weitzel
IPC分类号： F21V9/00
CPC分类号： G02B6/005 , G02B6/0038
摘要： In an embodiment, the invention provides a multi-color illuminating back light structure comprising a light guide, a reflector, at least one LED and a wavelength converter material. Micro-structures are formed on a first surface of the light guide. The reflector is attached to the first surface of the light guide. A wavelength converter material is deposited on a second surface of the light guide. At least one LED is optically coupled to at least one side of the light guide. A portion of light reflected from the micro-structures and the reflector is converted into light having at least one wavelength different from the wavelength of the reflected light. The light leaving the wavelength converter material comprises light with at least first and second wavelengths.
摘要翻译： 在一个实施例中，本发明提供一种多色照明背光结构，其包括光导，反射器，至少一个LED和波长转换器材料。 微结构形成在光导的第一表面上。 反射器附接到光导的第一表面。 波长转换器材料沉积在光导的第二表面上。 至少一个LED光耦合到光导的至少一侧。 从微结构和反射器反射的光的一部分被转换成具有与反射光的波长不同的至少一个波长的光。 离开波长转换器材料的光包括具有至少第一和第二波长的光。
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公开(公告)号：US20090213062A1
公开(公告)日：2009-08-27
申请号：US12037781
申请日：2008-02-26
申请人： Joh Joh Ng , Tak Meng Cheang , Boon Keat Tan
发明人： Joh Joh Ng , Tak Meng Cheang , Boon Keat Tan
IPC分类号： G09G3/36
CPC分类号： H05B33/086 , G09G3/3413 , G09G3/3426 , G09G2320/0242 , G09G2320/0646 , G09G2360/145 , Y02B20/341
摘要： In an embodiment, the invention provides a method of color control in a backlighting system comprising a plurality of light sources, a plurality of color sensors, a plurality of PWM controllers, and a video input for receiving video data. The plurality of light sources is activated during a first operative mode to produce white light. The plurality of light sources is controlled during a second operative mode to produce white light.
摘要翻译： 在一个实施例中，本发明提供了一种背光系统中的颜色控制方法，包括多个光源，多个彩色传感器，多个PWM控制器和用于接收视频数据的视频输入。 多个光源在第一操作模式下被激活以产生白光。 在第二操作模式期间控制多个光源以产生白光。
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公开(公告)号：US07012382B2
公开(公告)日：2006-03-14
申请号：US10836469
申请日：2004-04-30
申请人： Tak Meng Cheang , Fook Chuin Ng , Choon Guan Ko , Choon Keat Chew
发明人： Tak Meng Cheang , Fook Chuin Ng , Choon Guan Ko , Choon Keat Chew
IPC分类号： H05B37/00
CPC分类号： H05B33/086 , H05B33/0869 , H05B33/0872
摘要： An LED-based light system includes a primary light source and at least one redundant light source. The primary light source is activated by itself and the performance of the light source is measured to determine whether nor not to drive the redundant light source. The redundant light source is activated when the performance measurements indicate that a performance characteristic is not being met by the primary light source alone. The first light system can be activated in combination with the redundant light source once the decision is made to activate the redundant light source.
摘要翻译： 基于LED的光系统包括主光源和至少一个冗余光源。 主光源本身被激活，并且测量光源的性能以确定是否驱动冗余光源。 当性能测量表明单独的主光源不能满足性能特性时，冗余光源被激活。 一旦决定激活冗余光源，第一个光系统可以与冗余光源组合激活。
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