Patents by Inventor Rong Xuan

Rong Xuan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090250712
    Abstract: A light emitting device is provided, which includes a light-emitting structure and a magnetic material. The light-emitting structure has an exciting binding energy of a bandgap. The magnetic material is coupled with the light-emitting structure to produce a magnetic field in the light-emitting structure. The exciting binding energy may be higher than about 25.8 meV at room temperature.
    Type: Application
    Filed: May 7, 2009
    Publication date: October 8, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventor: Rong Xuan
  • Publication number: 20090179218
    Abstract: A light emitting device package including an light emitting device and at least one magnetic source is provided. The light emitting device includes a first doped type layer, a second doped type layer, and a light emitting layer. The light emitting layer is located between the first doped type layer and the second doped type layer. The magnetic source is disposed beside the light emitting device for applying a magnetic field to the light emitting device.
    Type: Application
    Filed: July 4, 2008
    Publication date: July 16, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chih-Hao Hsu, Rong Xuan
  • Publication number: 20090179209
    Abstract: A light emitting device is provided. In the present invention, a magnetic material is added to the light emitting device to change the current path and the distribution of the current density. As the main distribution of the current density is moved from the area between the electrodes to the area under light-out plane, the emitted light is no longer blocked by the electrodes, such that the light emitting efficiency can be enhanced and the distribution of the current density remains homogeneous.
    Type: Application
    Filed: May 9, 2008
    Publication date: July 16, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Rong Xuan, Jenq-Dar Tsay, Chih-Hao Hsu
  • Publication number: 20090179214
    Abstract: A light emitting device with magnetic field includes a light-emitting structure and a first magnetic-source layer. The light-emitting structure includes a first doped structural layer, a second doped structural layer, an active layer between the two doped structural layers, a first electrode, and a second electrode. The first magnetic-source layer is integrated with the light-emitting structure to produce a magnetic field in the light-emitting structure. The magnetic field transversely shifts a driving current of the light-emitting structure to redistribute in the light-emitting structure.
    Type: Application
    Filed: June 25, 2008
    Publication date: July 16, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Rong Xuan, Chih-Hao Hsu, Jenq-Dar Tsay, Mu-Tao Chu
  • Publication number: 20090179217
    Abstract: A light-emitting device with magnetic-source includes a light emitting stack structure. The light emitting stack structure has a first electrode and a second electrode distributed at a light output side of the light emitting stack structure. A magnetic-source layer is engaged with the light emitting stack structure to provide a magnetic field to the light emitting stack structure in a substantially perpendicular direction to the light emitting stack structure. Alternatively, a method for improving light emitting performance of a light-emitting device includes applying a magnetic field to the light-emitting device at a direction substantially perpendicular to a light emitting area of the light-emitting device.
    Type: Application
    Filed: June 25, 2008
    Publication date: July 16, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Rong Xuan, Chih-Hao Hsu
  • Publication number: 20090179216
    Abstract: A light emitting device with magnetic field includes a light emitting device, a thermal conductive material layer and a magnetic layer. The thermal conductive material layer is coupled with the light emitting device to dissipate heat generated by the light emitting device. The magnetic layer is coupled with thermal conductive material layer to produce a magnetic filed on the light emitting device.
    Type: Application
    Filed: January 10, 2009
    Publication date: July 16, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Rong Xuan, Chih-Hao Hsu, Wen-Yung Yeh, Chen-Peng Hsu, Chen-Kun Chen, Kun-Fong Lin
  • Publication number: 20090114935
    Abstract: A light emitting diode (LED) is provided. The LED at least includes a substrate, a saw-toothed multilayer, a first type semiconductor layer, an active emitting layer and a second type semiconductor layer. In the LED, the saw-tooth multilayer is formed opposite the active emitting layer below the first type semiconductor layer by an auto-cloning photonic crystal process. Due to the presence of the saw-tooth multilayer on the substrate of the LED, the scattered light form a back of the active emitting layer can be reused by reflecting and recycling through the saw-tooth multilayer. Thus, all light is focused to radiate forward so as to improve the light extraction efficiency of the LED. Moreover, the saw-tooth multilayer does not peel off or be cracked after any high temperature process because the saw-tooth multilayer has the performance of releasing thermal stress and reducing elastic deformation between it and the substrate.
    Type: Application
    Filed: January 25, 2008
    Publication date: May 7, 2009
    Inventors: Chen-Yang Huang, Hao-Min Ku, Shiuh Chao, Chu-Li Chao, Rong Xuan
  • Publication number: 20060285570
    Abstract: A semiconductor laser device includes a substrate having a first surface and a second surface opposite to the first surface, an active region formed on the second surface of the substrate, a cladding layer formed on the active region, and an insulation region formed in the cladding layer to form on the second surface of the substrate a first laser region having a first size and a second laser region having a second size different from the first size. The first laser region is used for generating a first optical spectrum having a first laser mode channel space. The second laser region is used for generating a second optical spectrum having a second laser mode channel space. A combination of the first optical spectrum and the second optical spectrum forms a single mode laser. Without any gratings, the semiconductor laser device is easy to be fabricated and has a low fabrication cost.
    Type: Application
    Filed: June 15, 2006
    Publication date: December 21, 2006
    Inventors: Rong Xuan, Yao-Lin Huang, Yu-Chen Yu, Yen Chu