COLOR LIQUID CRYSTAL DISPLAYS AND DISPLAY BACKLIGHTS

    公开(公告)号:WO2018187819A1

    公开(公告)日:2018-10-11

    申请号:PCT/US2018/028450

    申请日:2018-04-19

    Abstract: A display backlight, comprises: an excitation source, LED (146), for generating blue excitation light (148) with a peak emission wavelength in a wavelength range 445 nm to 465 nm; and a photoluminescence wavelength conversion layer (152). The photoluminescence wavelength conversion layer (152) comprises a mixture of a green-emitting photoluminescence material with a peak emission in a wavelength range 530 nm to 545 nm, a red-emitting photoluminescence material with a peak emission in a wavelength range 600 nm to 650 nm and particles of light scattering material.

    PHOTOLUMINESCENCE COLOR WHEELS
    2.
    发明申请
    PHOTOLUMINESCENCE COLOR WHEELS 审中-公开
    光致颜色轮

    公开(公告)号:WO2012109168A1

    公开(公告)日:2012-08-16

    申请号:PCT/US2012/024032

    申请日:2012-02-06

    CPC classification number: G02B26/008 G03B21/204 H04N9/3114 H04N9/3161

    Abstract: A color wheel comprises: a rotatable disc having a light reflective face and a region of photolummescence material deposited on the light reflective face. The region of photolummescence material comprises a substantially uniform thickness layer of a mixture of particles of the photolummescence material that is deposited on the light reflective face of the disc by screen printing. The photolummescence materials can comprise blue light or UV excitable photolummescence materials such as phosphor materials or quantum dots. Color modulated light sources and a method of manufacturing a color wheel are also disclosed.

    Abstract translation: 色轮包括:具有光反射面的可旋转盘和沉积在光反射面上的光致发光材料区域。 光致发光材料的区域包括通过丝网印刷沉积在盘的光反射面上的光致发光材料的颗粒的混合物的基本均匀的厚度层。 光致发光材料可以包括蓝光或UV可激发的光致发光材料,例如磷光体材料或量子点。 彩色调制光源和制造色轮的方法也被公开。

    FULL SPECTRUM WHITE LIGHT EMITTING DEVICES
    4.
    发明申请

    公开(公告)号:WO2021007121A1

    公开(公告)日:2021-01-14

    申请号:PCT/US2020/040801

    申请日:2020-07-03

    Abstract: A full spectrum white light emitting device comprises photoluminescence materials for generating light with a peak emission wavelength from 490 nm to 680 nm; and a broadband solid-state excitation source for generating broadband excitation light with a dominant wavelength from 420 nm to 480 nm. The device generates white light having a spectrum whose intensity decreases from its maximum value in the orange to red wavelength region of the spectrum to about 50% of said maximum value at a wavelength from 645 nm to 695 nm, and over a wavelength range from about 430 nm to about 520 nm, a maximum percentage intensity deviation of said white light from the intensity of light of a black-body curve or CIE Standard Illuminant D is less than 60%.

    FULL SPECTRUM WHITE LIGHT EMITTING DEVICES
    5.
    发明申请

    公开(公告)号:WO2020003008A1

    公开(公告)日:2020-01-02

    申请号:PCT/IB2019/001003

    申请日:2019-06-25

    Abstract: A full spectrum light emitting device (310a) comprises photoluminescence materials (e.g. in encapsulant 366) which generates light with a peak emission wavelength in a range 490 nm to 680 nm (green to red) and a broadband solid-state excitation source operable to generate broadband blue excitation light with a dominant wavelength in a range from 420 nm to 470 nm, wherein the broadband blue excitation light comprises at least two different blue light emissions (from LED chips 330 and 332 respectively) in a wavelength range 420 nm to 480 nm.

    SOLID-STATE LIGHT EMITTING DEVICES AND SIGNAGE WITH PHOTOLUMINESCENCE WAVELENGTH CONVERSION
    8.
    发明申请
    SOLID-STATE LIGHT EMITTING DEVICES AND SIGNAGE WITH PHOTOLUMINESCENCE WAVELENGTH CONVERSION 审中-公开
    固态发光器件和具有光致变化波长变换的信号

    公开(公告)号:WO2012047937A1

    公开(公告)日:2012-04-12

    申请号:PCT/US2011/054827

    申请日:2011-10-04

    Abstract: A solid-state light emitting device comprises a solid-state light emitter (LED) operable to generate excitation light and a wavelength conversion component including a mixture of particles of a photoluminescence material and particles of a light reflective material. The phosphor absorbs at least a portion of the excitation light and emits light of a different color. The emission product of the device comprises the combined light generated by the LED and the phosphor. The wavelength conversion component can be light transmissive and comprise a light transmissive substrate on which the mixture of phosphor and reflective materials is provided as a layer or homogeneously distributed throughout the volume of the substrate. Alternatively the wavelength conversion component can be light reflective with the mixture of phosphor and light reflective materials being provided as a layer on the light reflective surface.

    Abstract translation: 固态发光器件包括可操作以产生激发光的固态光发射器(LED)和包括光致发光材料的颗粒和光反射材料的颗粒的混合物的波长转换部件。 荧光体吸收至少一部分激发光并发射不同颜色的光。 该器件的发射产物包括由LED和磷光体产生的组合光。 波长转换组件可以是透光的并且包括透光基底,磷光体和反射材料的混合物在其上提供为层或均匀地分布在基底的整个体积中。 或者,波长转换组件可以是光反射的,荧光体和光反射材料的混合物被提供为光反射表面上的层。

    NITRIDE-BASED RED PHOSPHORS
    10.
    发明申请
    NITRIDE-BASED RED PHOSPHORS 审中-公开
    基于硝酸的红色磷光体

    公开(公告)号:WO2009142992A1

    公开(公告)日:2009-11-26

    申请号:PCT/US2009/043990

    申请日:2009-05-14

    CPC classification number: C09K11/0883 C09K11/7734 Y02B20/181

    Abstract: A nitride-based deep red phosphor having at least one of the following features: 1) an oxygen content less than about 2 percent by weight, and 2) a halogen content. Such phosphors are useful in the white light illumination industry, which utilizes the so-called "white LED." The selection and use of a rare earth halide as a raw material source of not only the activator for the phosphor, but also the halogen, is a feature of the present embodiments. The phosphors have the general formula MaMbBc(N,D):Eu2+, where Ma is a divalent alkaline earth metal such as Mg, Ca, Sr, Ba; Mb is a trivalent metal such as Al, Ga, Bi, Y, La, and Sm; and Mc is a tetravalent element such as Si, Ge, P, and B; N is nitrogen, and D is a halogen such as F, Cl, or Br. An exemplary compound is CaAlSi(N1-xFx): Eu2+.

    Abstract translation: 一种基于氮化物的深红色荧光体,其具有以下特征中的至少一个:1)氧含量小于约2重量%,和2)卤素含量。 这种荧光体在白光照明工业中是有用的,其利用了所谓的“白光LED”。 稀土卤化物作为不仅荧光体的活化剂,而且是卤素的原料来源的选择和使用是本实施方案的特征。 荧光体具有通式MaMbBc(N,D):Eu2 +,其中Ma是二价碱土金属如Mg,Ca,Sr,Ba; Mb是诸如Al,Ga,Bi,Y,La和Sm的三价金属; 并且Mc是四价元素如Si,Ge,P和B; N是氮,D是卤素如F,Cl或Br。 示例性化合物是CaAlSi(N1-xFx):Eu2 +。

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