Patents by Inventor Chu-Chang Chen

Chu-Chang Chen 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: 7777425
    Abstract: A multi-lamp backlight system is disclosed. The multi-lamp backlight system includes a plurality of lamps, an inverter circuit and a current balance circuit. The inverter circuit is capable of converting a DC input signal to a pair of AC output signals, which have a 180 degree phase shift. The pair of AC output signals are delivered to the plurality of lamps. The current balance circuit is connected to the low voltage sides of the plurality of lamps for balancing the lamp currents.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: August 17, 2010
    Assignee: O2Micro International Limited
    Inventors: Houng-Kuo Hsu, Chu-Chang Chen, Ching-Chuan Kuo
  • Patent number: 7528478
    Abstract: An integrated circuit having post passivation interconnections with a second connection pattern is disclosed. A passivation layer (preferably made of a non-oxide material) is formed over the integrated circuit already having a first plurality of contact pads in a first connection pattern. A buffer layer is then formed over the passivation layer. The buffer layer preferably is a silicon oxide layer with a thickness substantially smaller than a thickness of the passivation layer. A post passivation metal layer is deposited over the buffer layer. A second plurality of contact pads as part of the second connection pattern is formed in the post passivation metal layer.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: May 5, 2009
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hsi-Kuei Cheng, Hung-Ju Chien, Hsun-Chang Chan, Chu-Chang Chen, Ying-Lang Wang, Chin-Hao Su, Hsien-Ping Feng, Shih-Tzung Chang
  • Publication number: 20080067951
    Abstract: A multi-lamp backlight system is disclosed. The multi-lamp backlight system includes a plurality of lamps, an inverter circuit and a current balance circuit. The inverter circuit is capable of converting a DC input signal to a pair of AC output signals, which have a 180 degree phase shift. The pair of AC output signals are delivered to the plurality of lamps. The current balance circuit is connected to the low voltage sides of the plurality of lamps for balancing the lamp currents.
    Type: Application
    Filed: May 30, 2007
    Publication date: March 20, 2008
    Inventors: Houng-Kuo Hsu, Chu-Chang Chen, Ching-Chuan Kuo
  • Publication number: 20060145332
    Abstract: An integrated circuit having post passivation interconnections with a second connection pattern is disclosed. A passivation layer (preferably made of a non-oxide material) is formed over the integrated circuit already having a first plurality of contact pads in a first connection pattern. A buffer layer is then formed over the passivation layer. The buffer layer preferably is a silicon oxide layer with a thickness substantially smaller than a thickness of the passivation layer. A post passivation metal layer is deposited over the buffer layer. A second plurality of contact pads as part of the second connection pattern is formed in the post passivation metal layer.
    Type: Application
    Filed: February 28, 2006
    Publication date: July 6, 2006
    Inventors: Hsi-Kuei Cheng, Hung-Ju Chien, Hsun-Chang Chan, Chu-Chang Chen, Ying-Lang Wang, Chin-Hao Su, Hsien-Ping Feng, Shih-Tzung Chang
  • Patent number: 7026233
    Abstract: A method of forming post passivation interconnects for an integrated circuit is disclosed. A passivation layer of a non-oxide material is formed over the integrated circuit. A buffer layer is then formed over the passivation layer. The buffer layer preferably is a silicon oxide layer with a thickness substantially smaller than a thickness of the passivation layer. A post passivation metal layer is deposited over the buffer layer and a connection pattern is formed in the post passivation metal layer.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: April 11, 2006
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hsi-Kuei Cheng, Hung-Ju Chien, Hsun-Chang Chan, Chu-Chang Chen, Ying-Lang Wang, Chin-Hao Su, Hsien-Ping Feng, Shih-Tzung Chang
  • Patent number: 6985222
    Abstract: A system and method for detecting chamber leakage by measuring the reflectivity of an oxidized thin film. In a preferred embodiment, a method of detecting leaks in a chamber includes providing a first monitor workpiece, placing the first monitor workpiece in the chamber, and forming at least one film on the first monitor workpiece. The reflectivity of the least one film of the first monitor workpiece is measured, wherein the reflectivity indicates whether there are leaks in the at least one seal of the chamber. In another embodiment, the method includes providing a second monitor workpiece, placing the second monitor workpiece in the chamber, and forming at least one film on the second monitor workpiece. The reflectivity of the at least one film of the second monitor workpiece is measured, and the second monitor workpiece film reflectivity is compared to the first monitor workpiece film reflectivity.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: January 10, 2006
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hsi-Kuei Cheng, Chu-Chang Chen, Ting-Chun Wang, Szu-An Wu, Ying-Lang Wang, Hsien-Ping Feng
  • Publication number: 20050032353
    Abstract: A method of forming post passivation interconnects for an integrated circuit is disclosed. A passivation layer of a non-oxide material is formed over the integrated circuit. A buffer layer is then formed over the passivation layer. The buffer layer preferably is a silicon oxide layer with a thickness substantially smaller than a thickness of the passivation layer. A post passivation metal layer is deposited over the buffer layer and a connection pattern is formed in the post passivation metal layer.
    Type: Application
    Filed: August 6, 2003
    Publication date: February 10, 2005
    Inventors: Hsi-Kuei Cheng, Hung-Ju Chien, Hsun-Chang Chan, Chu-Chang Chen, Ying-Lang Wang, Chin-Hao Su, Hsien-Ping Feng, Shih-Tzung Chang
  • Publication number: 20040212798
    Abstract: A system and method for detecting chamber leakage by measuring the reflectivity of an oxidized thin film. In a preferred embodiment, a method of detecting leaks in a chamber includes providing a first monitor workpiece, placing the first monitor workpiece in the chamber, and forming at least one film on the first monitor workpiece. The reflectivity of the least one film of the first monitor workpiece is measured, wherein the reflectivity indicates whether there are leaks in the at least one seal of the chamber. In another embodiment, the method includes providing a second monitor workpiece, placing the second monitor workpiece in the chamber, and forming at least one film on the second monitor workpiece. The reflectivity of the at least one film of the second monitor workpiece is measured, and the second monitor workpiece film reflectivity is compared to the first monitor workpiece film reflectivity.
    Type: Application
    Filed: April 25, 2003
    Publication date: October 28, 2004
    Inventors: Hsi-Kuei Cheng, Chu-Chang Chen, Ting-Chun Wang, Szu-An Wu, Ying-Lang Wang, Hsien-Ping Feng