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    • 2. 发明申请
    • WHITE-EMITTING LED CHIPS AND METHOD FOR MAKING SAME
    • 白色发光LED灯及其制作方法
    • US20110266560A1
    • 2011-11-03
    • US12771938
    • 2010-04-30
    • Zhimin Jamie YaoJames Ibbetson
    • Zhimin Jamie YaoJames Ibbetson
    • H01L33/48H01L33/00
    • H01L33/50H01L33/0079H01L33/12H01L33/22H01L33/486H01L33/505H01L2224/16
    • Methods and devices for light emitting diode (LED) chips are provided. In one embodiment of a method, a pre-formed capping wafer is provided, with the capping wafer comprising a conversion material. A wire-bond free LED wafer is fabricated comprising a plurality of LEDs. The capping wafer is bonded to the LED wafer using an adhesive. The LED chips are later singulated upon completion of all final fabrication steps. The capping wafer provides a robust mechanical support for the LED chips during fabrication, which improves the strength of the chips during fabrication. Additionally, the capping wafer may comprise an integrated conversion material, which simplifies the fabrication process. In one possible embodiment for an LED chip wafer, a submount wafer is provided, along with a plurality of LEDs flip-chip mounted on the submount wafer. Additionally, a capping wafer is bonded to the LEDs using an adhesive, and the capping wafer comprises a conversion material. At least some of the light emitted from the LEDs passes through the capping wafer where at least some of the light is converted by the conversion material.
    • 提供了用于发光二极管(LED)芯片的方法和装置。 在一种方法的一个实施例中,提供预成形的封盖晶片,封盖晶片包括转换材料。 制造包括多个LED的无引线接合LED晶片。 封盖晶片使用粘合剂结合到LED晶片。 在完成所有最终制造步骤后,LED芯片随后被分割。 封装晶片在制造期间为LED芯片提供了坚固的机械支撑,这在制造过程中提高了芯片的强度。 另外,封盖晶片可以包括集成转换材料,这简化了制造工艺。 在用于LED芯片晶片的一个可能的实施例中,提供了一个底座晶片以及安装在底座晶片上的多个LED倒装芯片。 此外,使用粘合剂将封盖晶片结合到LED,并且封盖晶片包括转换材料。 从LED发射的至少一些光通过封盖晶片,其中至少一些光被转换材料转化。
    • 3. 发明申请
    • HIGH VOLTAGE WIRE BOND FREE LEDS
    • 高压无铅焊条LED
    • US20110084294A1
    • 2011-04-14
    • US12905995
    • 2010-10-15
    • Zhimin Jamie Yao
    • Zhimin Jamie Yao
    • H01L33/32H01L33/00
    • H01L27/153H01L27/156H01L33/20H01L33/22H01L33/38H01L33/405H01L33/62H01L2224/32245H01L2224/32257H01L2224/48091H01L2224/48227H01L2224/48247H01L2224/73265H01L2924/01087H01L2924/00014H01L2924/00
    • An LED chip and method of fabricating the same is disclosed that comprises a plurality of sub-LEDs, said sub-LEDs interconnected such that the voltage necessary to drive said sub-LEDs is dependent on the number of said interconnected sub-LEDs and the junction voltage of said sub-LEDs. Each of said interconnected sub-LEDs comprising an n-type semiconductor layer, a p-type semiconductor layer, and an active or quantum well region interposed between the n-type and p-type layers. The monolithic LED chip further comprising a p-electrode having a lead that is accessible from a point on a surface opposite of a primary emission surface of the monolithic LED chip, the p-electrode electrically connected to the p-type layer, and an n-electrode having a lead that is accessible from a point on the surface opposite of the primary emission surface, the n-electrode electrically connected to the n-type layer. These sub-LEDs interconnected by at least a metallization layer on the n-type and p-type layers, which is insulated so that it does not short the sub-LEDs. Further, the LED chip is capable of being electrically coupled for operation without wire bonds.
    • 公开了一种LED芯片及其制造方法,其包括多个子LED,所述子LED互连,使得驱动所述子LED所需的电压取决于所述互连子LED的数量和所述连接 所述子LED的电压。 所述相互连接的子LED中的每一个包括n型半导体层,p型半导体层以及介于n型层和p型层之间的有源或量子阱区。 所述单片LED芯片还包括具有引线的p电极,所述引线可从与所述单片LED芯片的主发射表面相反的表面上的点接触,所述p电极电连接到所述p型层,并且n - 电极,其具有可从与所述主发射表面相对的表面上的点可接近的所述n电极与n型层电连接。 这些子LED通过至少在n型和p型层上的金属化层互连,其被绝缘,使得它不会使子LED短路。 此外,LED芯片能够电耦合以用于没有引线键合的操作。
    • 6. 发明授权
    • High reflective board or substrate for LEDs
    • 高反射板或LED基板
    • US09105824B2
    • 2015-08-11
    • US13370696
    • 2012-02-10
    • Sten HeikmanZhimin Jamie YaoJames IbbetsonFan Zhang
    • Sten HeikmanZhimin Jamie YaoJames IbbetsonFan Zhang
    • H01L33/46H01L33/60H01L33/54H01L33/62
    • H01L33/60H01L33/54H01L33/62H01L2224/73265H01L2224/48091H01L2924/00014
    • Light emitting devices and methods are disclosed that provide improved light output. The devices have an LED mounted to a substrate, board or submount characterized by improved reflectivity, which reduces the absorption of LED light. This increases the amount of light that can emit from the LED device. The LED devices also exhibit improved emission characteristics by having a reflective coating on the submount that is substantially non-yellowing. One embodiment of a light emitting device according to the present invention comprises a submount having a circuit layer. A reflective coating is included between at least some of the elements of the circuit layer. A light emitting diode mounted to the circuit layer, the reflective coating being reflective to the light emitted by the light emitting diode. In some embodiments, the reflective coating comprises a carrier with scattering particles having a different index of refraction than said carrier material.
    • 公开了提供改进的光输出的发光器件和方法。 这些装置具有安装到基板,板或基座的LED,其特征在于改进的反射率,这降低了LED光的吸收。 这增加了可从LED器件发射的光量。 LED器件还通过在基座上具有基本不变黄的反射涂层来显示出改进的发射特性。 根据本发明的发光器件的一个实施例包括具有电路层的基座。 反射涂层包括在电路层的至少一些元件之间。 安装到电路层的发光二极管,反射涂层对由发光二极管发出的光反射。 在一些实施例中,反射涂层包括具有与所述载体材料不同的折射率的散射颗粒的载体。