Patents by Inventor Cheng-Hung Wei

Cheng-Hung Wei 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).

  • Method for patterning an epitaxial substrate, a light emitting diode and a method for forming a light emitting diode
    Patent number: 8742442
    Abstract: A method for patterning an epitaxial substrate includes: (a) forming an etch mask layer over an epitaxial substrate, and patterning the etch mask layer using a patterned cover mask layer to form the etch mask layer into a plurality of spaced apart mask patterns; and (b) etching the epitaxial substrate that is exposed from the mask patterns, and removing the mask patterns such that the epitaxial substrate is formed with a plurality of spaced apart substrate patterns.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: June 3, 2014
    Assignee: Sino-American Silicon Products Inc.
    Inventors: Cheng-Hung Wei, Bo-Wen Lin, Ching-Yen Peng, Hao-Chung Kuo, Wen-Ching Hsu
  • METHOD FOR PATTERNING AN EPITAXIAL SUBSTRATE, A LIGHT EMITTING DIODE AND A METHOD FOR FORMING A LIGHT EMITTING DIODE
    Publication number: 20120273821
    Abstract: A method for patterning an epitaxial substrate includes: (a) forming an etch mask layer over an epitaxial substrate, and patterning the etch mask layer using a patterned cover mask layer to form the etch mask layer into a plurality of spaced apart mask patterns; and (b) etching the epitaxial substrate that is exposed from the mask patterns, and removing the mask patterns such that the epitaxial substrate is formed with a plurality of spaced apart substrate patterns.
    Type: Application
    Filed: April 18, 2012
    Publication date: November 1, 2012
    Applicant: SINO-AMERICAN SILICON PRODCUTS INC.
    Inventors: Cheng-Hung Wei, Bo-Wen Lin, Ching-Yen Peng, Hao-Chung Kuo, Wen-Ching Hsu
  • Light emitting device using phosphor powder
    Patent number: 7868535
    Abstract: The present invention is a light emitting device which uses a specific phosphor powder. The phosphor powder is a combination of cerium (Ce) and lithium aluminum oxide (LiAlO2). They are mixed under a specific range of composition ratio. With the specific phosphor powder applied, the light emitting device has advantages in a low cost, a reduced power consumption, an easy production, a long life, and so on. In addition, a transformation efficiency of the phosphor powder is high and so a light emitting efficiency of the light emitting device is enhanced.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: January 11, 2011
    Assignees: National Sun Yat-Sen University, Sino American Silicon Products Inc.
    Inventors: Mitch M. C. Chou, Wen-Ching Hsu, Cheng-Hung Wei
  • Row driver cell and row driving method for an electroluminescent display
    Publication number: 20090195521
    Abstract: For an electroluminescent display having an electro-luminescent element connected between a column scan line and a row scan line, a row driver cell switches the row scan line to connect to a high voltage input or a low voltage input, or to be floating, and prevents the current consumed by panel charging and discharging from flowing to the high voltage input from the row scan line.
    Type: Application
    Filed: December 5, 2008
    Publication date: August 6, 2009
    Inventors: Chien-Chung Chen, Jen-Chun Peng, Cheng-Hung Wei
  • Light emitting device using phosphor powder
    Publication number: 20080231172
    Abstract: The present invention is a light emitting device which uses a specific phosphor powder. The phosphor powder is a combination of cerium (Ce) and lithium aluminum oxide (LiAlO2). They are mixed under a specific range of composition ratio. With the specific phosphor powder applied, the light emitting device has advantages in a low cost, a reduced power consumption, an easy production, a long life, and so on. In addition, a transformation efficiency of the phosphor powder is high and so a light emitting efficiency of the light emitting device is enhanced.
    Type: Application
    Filed: June 12, 2007
    Publication date: September 25, 2008
    Applicants: National Sun Yat-sen University, Sino American Silicon Products Inc.
    Inventors: Mitch M. C. Chou, Wen-Ching Hsu, Cheng-Hung Wei