Patents by Inventor Dong-Sing Wu

Dong-Sing Wu 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).

  • Patent number: 7781785
    Abstract: The present invention discloses a light emitting diode having a mirror and a permanent substrate plated thereon. The present invention also discloses a method for producing such light emitting diode. The permanent substrate and the mirror are formed after both electrodes are completed. Accordingly, the epitaxial structure and the mirror will not be damaged, and brightness and heat dissipation of the light emitting device are improved.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: August 24, 2010
    Assignee: National Chung-Hsing University
    Inventors: Ray-Hua Horng, Dong-Sing Wu, Shao-Hua Huang, Chi-Ying Chiu, Yann-Jyh Chiang
  • Patent number: 7319248
    Abstract: The present invention discloses a high brightness light emitting diode. The light emitting diode primarily includes a permanent substrate, a reflective mirror formed on said permanent substrate, an n-type cladding layer formed on said reflective mirror, and defining a higher port and a lower port on an upper surface thereof, an active layer with quantum well structure formed on said higher port of said n-type cladding layer, a p-type cladding layer formed on said active layer, a p-GaP layer formed on said p-type cladding layer, a metal contact layer formed on said GaP layer, a p-type ohmic contact electrode formed on said metal contact layer, and an n-type ohmic contact electrode formed on said lower port of said n-type cladding layer. By providing a gallium phosphide window and a reflective mirror, brightness of the LED can be promoted.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: January 15, 2008
    Assignee: National Chung-Hsing University
    Inventors: Ray-Hua Horng, Dong-Sing Wu, Yann-Jyh Chiang, Chi-Ying Chiu
  • Patent number: 6979582
    Abstract: The present invention provides a vertical-cavity surface emitting laser (VCSEL) diode and a method for producing the same. In this method, an n-type and a p-type ohmic contact electrodes are previously disposed, and then two pairs of distributed Bragger reflectors (DBRs) are formed. At last, a permanent metal substrate is plated. According to the present invention, reflectivity of the DBRs can be preserved without damage during rapid thermal annealing, and thus brightness of the laser diode is improved.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: December 27, 2005
    Assignee: National Chung-Hsing University
    Inventors: Ray-Hua Horng, Dong-Sing Wu
  • Publication number: 20050226299
    Abstract: The present invention provides a VCSEL (vertical-cavity surface emitting laser) diode, in which a p-type cladding layer is formed on an active layer and surrounded with an insulation edge. An annular p-type electrode is formed on the ptype cladding layer close to the insulation edge and an upper DBR mirror is formed therewithin. According to the present invention, light beams emitting from the active layer will not be shielded by a central electrode and brightness of the laser diode is improved.
    Type: Application
    Filed: June 8, 2005
    Publication date: October 13, 2005
    Inventors: Ray-Hua Horng, Dong-Sing Wu
  • Publication number: 20050191777
    Abstract: The present invention discloses a method for producing a light emitting diode with a mirror and a plated substrate. The mirror and the plated substrate are formed after both electrodes are completed. Accordingly, the epitaxial structure and the mirror will not be damaged, and brightness and heat dissipation of the light emitting device are improved.
    Type: Application
    Filed: May 4, 2005
    Publication date: September 1, 2005
    Inventors: Ray-Hua Horng, Dong-Sing Wu, Shao-Hua Huang, Chi-Ying Chiu, Yann-Jyh Chiang
  • Publication number: 20050062061
    Abstract: The present invention discloses a high brightness light emitting diode. The light emitting diode primarily includes a permanent substrate, a reflective mirror formed on said permanent substrate, an n-type cladding layer formed on said reflective mirror, and defining a higher port and a lower port on an upper surface thereof, an active layer with quantum well structure formed on said higher port of said n-type cladding layer, a p-type cladding layer formed on said active layer, a p-GaP layer formed on said p-type cladding layer, a metal contact layer formed on said GaP layer, a p-type ohmic contact electrode formed on said metal contact layer, and an n-type ohmic contact electrode formed on said lower port of said n-type cladding layer. By providing a gallium phosphide window and a reflective mirror, brightness of the LED can be promoted.
    Type: Application
    Filed: July 14, 2004
    Publication date: March 24, 2005
    Inventors: Ray-Hua Horng, Dong-Sing Wu, Yann-Jyh Chiang, Chi-Ying Chiu
  • Publication number: 20050063437
    Abstract: The present invention provides a vertical-cavity surface emitting laser (VCSEL) diode and a method for producing the same. In this method, an n-type and a p-type ohmic contact electrodes are previously disposed, and then two pairs of distributed Bragger reflectors (DBRs) are formed. At last, a permanent metal substrate is plated. According to the present invention, reflectivity of the DBRs can be preserved without damage during rapid thermal annealing, and thus brightness of the laser diode is improved.
    Type: Application
    Filed: September 22, 2003
    Publication date: March 24, 2005
    Inventors: Ray-Hua Horng, Dong-Sing Wu
  • Patent number: 6806112
    Abstract: The present invention discloses a high brightness light emitting diode and a method for producing the same. The light emitting diode includes a gallium phosphide window and a reflective mirror so as to promote brightness thereof. To produce the light emitting diode, a glass substrate is bonded to the main structure of the light emitting diode and then the temporary substrate for epitaxing thereon can be removed for depositing a reflective mirror. After bonding a permanent substrate below the reflective mirror, the glass substrate is removed, too. By means of the double-bonding process, reflectivity of the mirror is maintained in the present invention.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: October 19, 2004
    Assignee: National Chung-Hsing University
    Inventors: Ray-Hua Horng, Dong-Sing Wu, Yann-Jyh Chiang, Chi-Ying Chiu
  • Publication number: 20040079951
    Abstract: The present invention discloses a light emitting diode having a mirror and a permanent substrate plated thereon. The present invention also discloses a method for producing such light emitting diode. The permanent substrate and the mirror are formed after both electrodes are completed. Accordingly, the epitaxial structure and the mirror will not be damaged, and brightness and heat dissipation of the light emitting device are improved.
    Type: Application
    Filed: September 22, 2003
    Publication date: April 29, 2004
    Inventors: Ray-Hua Horng, Dong-Sing Wu, Shao-Hua Huang, Chi-Ying Chiu, Yann-Jyh Chiang
  • Patent number: 6656756
    Abstract: The present invention is related to a method for fabricating a surface-emitting laser diode with a metal reflector. It is mainly the use of a combination of a metal reflector and wafer bonding technology to replace the traditional epiwafer process or high-temperature high-pressure wafer bonding technology in fabricating VCSEL Bragg Reflector. The metal reflector has high reflectance with its material selected to form ohmic contact with VCSEL material. Besides, the substrate for the metal reflector can be selected for cheap price and good heat dissipation. Further advantages include simple process, low production cost and good VCSEL characteristic etc.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: December 2, 2003
    Assignee: Telecommunication Laboratories, Chunghwa Telecom Co., Ltd.
    Inventors: Ray-Hua Horng, Dong-Sing Wu, Wei-Chih Peng, Wen-Jeng Ho, Ying-Shun Huang
  • Publication number: 20030040133
    Abstract: The present invention is related to a method for fabricating a surface-emitting laser diode with a metal reflector. It is mainly the use of a combination of a metal reflector and wafer bonding technology to replace the traditional epiwafer process or high-temperature high-pressure wafer bonding technology in fabricating VCSEL Bragg Reflector. The metal reflector has high reflectance with its material selected to form ohmic contact with VCSEL material. Besides, the substrate for the metal reflector can be selected for cheap price and good heat dissipation. Further advantages include simple process, low production cost and good VCSEL characteristic etc.
    Type: Application
    Filed: August 24, 2001
    Publication date: February 27, 2003
    Inventors: Ray-Hua Horng, Dong-Sing Wu, Wei-Chih Peng, Wen-Jeng Ho, Ying-Shun Huang