White light emitting diode (LED) lighting device driven by pulse current
    1.
    发明授权
    White light emitting diode (LED) lighting device driven by pulse current 有权
    白光发光二极管(LED)照明器件由脉冲电流驱动

    公开(公告)号:US08878199B2

    公开(公告)日:2014-11-04

    申请号:US14107294

    申请日:2013-12-16

    摘要: A white LED lighting device driven by a pulse current is provided, which consists of blue, violet or ultraviolet LED chips, blue afterglow luminescence materials A and yellow luminescence materials B. Wherein the weight ratio of the blue afterglow luminescence materials A to the yellow luminescence materials B is 10-70 wt %: 30-90 wt %. The white LED lighting device drives the LED chips with a pulse current having a frequency of not less than 50 Hz. Because of using the afterglow luminescence materials, the light can be sustained when an excitation light source disappears, thereby eliminating the influence of LED light output fluctuation caused by current variation on the illumination. At the same time, the pulse current can keep the LED chips being at an intermittent work state, so as to overcome the problem of chip heating.

    摘要翻译: 提供由脉冲电流驱动的白色LED照明装置,其由蓝色,紫色或紫外LED芯片,蓝色余辉发光材料A和黄色发光材料B组成。其中蓝色余辉发光材料A与黄色发光体的重量比 材料B为10-70重量%:30-90重量%。 白色LED照明装置以不小于50Hz的频率的脉冲电流驱动LED芯片。 由于使用余辉发光材料,所以当激发光源消失时,可以维持光线,从而消除由电流变化引起的LED光输出波动对照明的影响。 同时,脉冲电流可以保持LED芯片处于间歇工作状态,从而克服了芯片加热的问题。

    MULTI-CHIP LIGHT EMITTING DEVICE LAMPS FOR PROVIDING HIGH-CRI WARM WHITE LIGHT AND LIGHT FIXTURES INCLUDING THE SAME
    3.
    发明申请
    MULTI-CHIP LIGHT EMITTING DEVICE LAMPS FOR PROVIDING HIGH-CRI WARM WHITE LIGHT AND LIGHT FIXTURES INCLUDING THE SAME 有权
    用于提供高亮度白光的多芯片发光装置灯和包括其中的灯具

    公开(公告)号:US20130249434A1

    公开(公告)日:2013-09-26

    申请号:US13851688

    申请日:2013-03-27

    申请人: CREE, INC.

    IPC分类号: H05B37/02

    摘要: A multi-chip lighting emitting device (LED) lamp for providing white light includes a submount including first and second die mounting regions thereon. A first LED chip is mounted on the first die mounting region, and a second LED chip is mounted on the second die mounting region. The LED lamp is configured to emit light having a spectral distribution including at least four different color peaks to provide the white light. For example, a first conversion material may at least partially cover the first LED chip, and may be configured to absorb at least some of the light of the first color and re-emit light of a third color. In addition, a second conversion material may at least partially cover the first and/or second LED chips, and may be configured to absorb at least some of the light of the first and/or second colors and re-emit light of a fourth color. Related light fixtures and methods are also disclosed.

    摘要翻译: 用于提供白光的多芯片发光装置(LED)灯包括其上包括第一和第二管芯安装区域的基座。 第一LED芯片安装在第一管芯安装区域上,第二LED芯片安装在第二管芯安装区域上。 LED灯被配置为发射具有包括至少四个不同颜色峰值的光谱分布的光以提供白光。 例如,第一转换材料可以至少部分地覆盖第一LED芯片,并且可以被配置为吸收第一颜色的至少一些光并重新发射第三颜色的光。 另外,第二转换材料可以至少部分地覆盖第一和/或第二LED芯片,并且可以被配置为吸收第一颜色和/或第二颜色的至少一些光并重新发射第四颜色的光 。 还公开了相关的灯具和方法。

    WHITE LIGHT EMITTING DIODE (LED) LIGHTING DEVICE DRIVEN BY PULSE CURRENT
    4.
    发明申请
    WHITE LIGHT EMITTING DIODE (LED) LIGHTING DEVICE DRIVEN BY PULSE CURRENT 有权
    白光发光二极管(LED)照明器件由脉冲电流驱动

    公开(公告)号:US20130119410A1

    公开(公告)日:2013-05-16

    申请号:US13583464

    申请日:2010-07-14

    IPC分类号: H01L33/50

    摘要: A white LED lighting device driven by a pulse current is provided, which consists of blue, violet or ultraviolet LED chips, blue afterglow luminescence materials A and yellow luminescence materials B. Wherein the weight ratio of the blue afterglow luminescence materials A to the yellow luminescence materials B is 10-70 wt %:30-90 wt %. The white LED lighting device drives the LED chips with a pulse current having a frequency of not less than 50 Hz. Because of using the afterglow luminescence materials, the light can be sustained when an excitation light source disappears, thereby eliminating the influence of LED light output fluctuation caused by current variation on the illumination. At the same time, the pulse current can keep the LED chips being at an intermittent work state, so as to overcome the problem of chip heating.

    摘要翻译: 提供由脉冲电流驱动的白色LED照明装置,其由蓝色,紫色或紫外LED芯片,蓝色余辉发光材料A和黄色发光材料B组成。其中蓝色余辉发光材料A与黄色发光体的重量比 材料B为10-70重量%:30-90重量%。 白色LED照明装置以不小于50Hz的频率的脉冲电流驱动LED芯片。 由于使用余辉发光材料,所以当激发光源消失时,可以维持光线,从而消除由电流变化引起的LED光输出波动对照明的影响。 同时,脉冲电流可以保持LED芯片处于间歇工作状态,从而克服了芯片加热的问题。

    Composite nano-particle and method for preparing the same
    5.
    发明授权
    Composite nano-particle and method for preparing the same 失效
    复合纳米粒子及其制备方法

    公开(公告)号:US07394091B2

    公开(公告)日:2008-07-01

    申请号:US10521233

    申请日:2003-07-16

    IPC分类号: H01L29/06 H01L29/12 C09K11/72

    摘要: There is provided composite nano-particles comprising nano-crystal particles dispersed stably and individually in suspension in high concentration without mutual aggregation of the nano-particles. A determined amount of pure water or deionized water is poured into a reactor, into which is introduced nitrogen gas at rate of 300 cm3/min for a given time while agitating with a stirrer to remove dissolved oxygen in the pure water, allowing to stand in an atmosphere of nitrogen. Next, the inside of the reactor is maintained in an atmosphere of nitrogen and sodium citrate as a dispersion-stabilizing agent, an aqueous solution of MPS as a surface-modifying agent, an anion aqueous solution for co-precipitation as a nano-crystal and a cation aqueous solution are added, in that order. Then, an aqueous solution of sodium silicate is added to the reactor, which is then allowed to stand in the dark place in an atmosphere of nitrogen after agitation. At that time, a vitrification-inhibiting agent may be added in order to inhibit the growth of glass layer.

    摘要翻译: 提供了包含纳米晶体颗粒的复合纳米颗粒,其以高浓度稳定地和单独地分散悬浮而没有纳米颗粒的相互聚集。 将一定量的纯水或去离子水倒入反应器中,其中以300cm 3 / min的速率将氮气引入给定时间,同时用搅拌器搅拌以除去溶解氧 纯水,允许在氮气氛中站立。 接下来,将反应器内部保持在作为分散稳定剂的氮和柠檬酸钠的气氛中,作为表面改性剂的MPS的水溶液,作为纳米晶体共沉淀的阴离子水溶液和 依次加入阳离子水溶液。 然后,向反应器中加入硅酸钠水溶液,然后在搅拌后在氮气气氛中在黑暗的位置放置。 此时,为了抑制玻璃层的生长,可以添加玻璃化抑制剂。

    WHITE LIGHT EMITTING DIODE (LED) LIGHTING DEVICE DRIVEN BY PULSE CURRENT
    8.
    发明申请
    WHITE LIGHT EMITTING DIODE (LED) LIGHTING DEVICE DRIVEN BY PULSE CURRENT 有权
    白光发光二极管(LED)照明器件由脉冲电流驱动

    公开(公告)号:US20140134764A1

    公开(公告)日:2014-05-15

    申请号:US14107346

    申请日:2013-12-16

    IPC分类号: H01L33/50

    摘要: A white LED lighting device driven by a pulse current is provided, which consists of blue, violet or ultraviolet LED chips, blue afterglow luminescence materials A and yellow luminescence materials B. Wherein the weight ratio of the blue afterglow luminescence materials A to the yellow luminescence materials B is 10-70 wt %:30-90 wt %. The white LED lighting device drives the LED chips with a pulse current having a frequency of not less than 50 Hz. Because of using the afterglow luminescence materials, the light can be sustained when an excitation light source disappears, thereby eliminating the influence of LED light output fluctuation caused by current variation on the illumination. At the same time, the pulse current can keep the LED chips being at an intermittent work state, so as to overcome the problem of chip heating.

    摘要翻译: 提供由脉冲电流驱动的白色LED照明装置,其由蓝色,紫色或紫外LED芯片,蓝色余辉发光材料A和黄色发光材料B组成。其中蓝色余辉发光材料A与黄色发光体的重量比 材料B为10-70重量%:30-90重量%。 白色LED照明装置以不小于50Hz的频率的脉冲电流驱动LED芯片。 由于使用余辉发光材料,所以当激发光源消失时,可以维持光线,从而消除由电流变化引起的LED光输出波动对照明的影响。 同时,脉冲电流可以保持LED芯片处于间歇工作状态,从而克服了芯片加热的问题。

    White light emitting diode (LED) lighting device driven by pulse current
    10.
    发明授权
    White light emitting diode (LED) lighting device driven by pulse current 有权
    白光发光二极管(LED)照明器件由脉冲电流驱动

    公开(公告)号:US08637874B2

    公开(公告)日:2014-01-28

    申请号:US13583464

    申请日:2010-07-14

    IPC分类号: H01L31/12 H01L33/00

    摘要: A white LED lighting device driven by a pulse current is provided, which consists of blue, violet or ultraviolet LED chips, blue afterglow luminescence materials A and yellow luminescence materials B. Wherein the weight ratio of the blue afterglow luminescence materials A to the yellow luminescence materials B is 10-70 wt %:30-90 wt %. The white LED lighting device drives the LED chips with a pulse current having a frequency of not less than 50 Hz. Because of using the afterglow luminescence materials, the light can be sustained when an excitation light source disappears, thereby eliminating the influence of LED light output fluctuation caused by current variation on the illumination. At the same time, the pulse current can keep the LED chips being at an intermittent work state, so as to overcome the problem of chip heating.

    摘要翻译: 提供由脉冲电流驱动的白色LED照明装置,其由蓝色,紫色或紫外LED芯片,蓝色余辉发光材料A和黄色发光材料B组成。其中蓝色余辉发光材料A与黄色发光体的重量比 材料B为10-70重量%:30-90重量%。 白色LED照明装置以不小于50Hz的频率的脉冲电流驱动LED芯片。 由于使用余辉发光材料,所以当激发光源消失时,可以维持光线,从而消除由电流变化引起的LED光输出波动对照明的影响。 同时,脉冲电流可以保持LED芯片处于间歇工作状态,从而克服了芯片加热的问题。