Patents by Inventor Yu-Wen Ho

Yu-Wen Ho 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: 7433750
    Abstract: A data tracking method applied in semiconductor manufacturing is provided. Split historical data of a wafer lot is retrieved and it is determined whether the end of lot data of the wafer lot is read. If not, a maximum split number required for a split processing applied to the wafer lot is determined. Next, a virtual sub split number required for the current process station is determined according to the maximum split number and a current split number. At least one virtual sub lot for the current process station is created according to the virtual sub split number. Process data of an original wafer lot corresponding to the virtual sub lot is copied to the virtual sub lot and virtual sub lots for the next process station is continuously created when creation is complete.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: October 7, 2008
    Assignee: Powerchip Semiconductor Corp.
    Inventors: Yu-Wen Ho, Tzu-Hsiu Liu
  • Publication number: 20080014766
    Abstract: A data tracking method applied in semiconductor manufacturing is provided. Split historical data of a wafer lot is retrieved and it is determined whether the end of lot data of the wafer lot is read. If not, a maximum split number required for a split processing applied to the wafer lot is determined. Next, a virtual sub split number required for the current process station is determined according to the maximum split number and a current split number. At least one virtual sub lot for the current process station is created according to the virtual sub split number. Process data of an original wafer lot corresponding to the virtual sub lot is copied to the virtual sub lot and virtual sub lots for the next process station is continuously created when creation is complete.
    Type: Application
    Filed: December 21, 2006
    Publication date: January 17, 2008
    Inventors: Yu-Wen Ho, Tzu-Hsiu Liu
  • Patent number: 7260444
    Abstract: A real-time management method for manufacturing management and yield rate analysis integration. A plurality of yield rates relating to wafer products are summed and averaged for a historical yield rate. Multiple representational inline QC parameters are selected. A statistical process is implemented and, if no extreme value and collinear parameter exists and if analysis results satisfy normal distribution, multiple optimum inline QC parameters are selected from the representational inline QC parameters. Weights of each optimum inline QC parameter are calculated. A predicted yield rate is calculated according to the historical yield rate, weights, and a plurality of measurement and target values relating to the wafer products.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: August 21, 2007
    Assignee: Powerchip Semiconductor Corp.
    Inventors: Chien-Chung Chen, Sheng-Jen Wang, Yu-Wen Ho
  • Publication number: 20070191980
    Abstract: A method for managing tools using statistical process control. Process progression for a wafer in a chamber of a process tool is recorded. When a wafer process is complete and the wafer leaves the chamber, the wafer is transferred to a measurement tool. A wafer ID of the wafer is obtained using the measurement tool. A chamber ID is obtained according to the wafer ID and a chart point corresponding to the wafer ID and the chamber ID is generated according to measurement results. A plurality of generated chart points are grouped according to a plurality of obtained wafer IDs and a plurality of chamber IDs corresponding to the wafer IDs to split a control chart corresponding to the process tool into a plurality of separate control charts. Statistical process control analysis is implemented according to the generated control charts and alarms are issued according to the analysis results to adjust an abnormal chamber.
    Type: Application
    Filed: December 12, 2006
    Publication date: August 16, 2007
    Inventors: Yu-Wen Ho, Tung-Pin Hsu, Chien-Chung Chen
  • Publication number: 20070129833
    Abstract: A dispatch integration method based on semiconductor manufacturing. When multiple tools are idle, idle messages are sent to a real-time dispatch system through a tool control system and a manufacturing execution system. The real-time dispatch system sorts tool parameters relating to tool efficiency based on a currently executed process using a principal component analysis method, defining weights of each tool according to the defined tool parameters and corresponding factor weights using a linear regression weight formula, calculating tool weights of each tool parameter using a linear regression weight formula, and determining a desired tool for dispatch according to the calculated tool weights.
    Type: Application
    Filed: April 12, 2006
    Publication date: June 7, 2007
    Inventors: Yu-Wen Ho, Hung-En Tai, Chien-Chung Chen
  • Patent number: 7218981
    Abstract: A dispatch integration method based on semiconductor manufacturing. When multiple tools are idle, idle messages are sent to a real-time dispatch system through a tool control system and a manufacturing execution system. The real-time dispatch system sorts tool parameters relating to tool efficiency based on a currently executed process using a principal component analysis method, defining weights of each tool according to the defined tool parameters and corresponding factor weights using a linear regression weight formula, calculating tool weights of each tool parameter using a linear regression weight formula, and determining a desired tool for dispatch according to the calculated tool weights.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: May 15, 2007
    Assignee: Powerchip Semiconductor Corp.
    Inventors: Yu-Wen Ho, Hung-En Tai, Chien-Chung Chen
  • Publication number: 20060241802
    Abstract: A real-time management method for manufacturing management and yield rate analysis integration. A plurality of yield rates relating to wafer products are summed and averaged for a historical yield rate. Multiple representational inline QC parameters are selected. A statistical process is implemented and, if no extreme value and collinear parameter exists and if analysis results satisfy normal distribution, multiple optimum inline QC parameters are selected from the representational inline QC parameters. Weights of each optimum inline QC parameter are calculated. A predicted yield rate is calculated according to the historical yield rate, weights, and a plurality of measurement and target values relating to the wafer products.
    Type: Application
    Filed: September 19, 2005
    Publication date: October 26, 2006
    Inventors: Chien-Chung Chen, Sheng-Jen Wang, Yu-Wen Ho
  • Publication number: 20060239125
    Abstract: A display system and a fixed time remind method therefor. The display system has a displaying device. The fixed time remind method includes the following steps. As an operation window is opened, the operation window displays a remind message on the displaying device. As the remind message is enabled and after a remind time is set, the remind time is saved. As the remind time is up, the displaying device outputs a remind signal for the remind message.
    Type: Application
    Filed: April 17, 2006
    Publication date: October 26, 2006
    Inventors: Show-Nan Chung, Wan-Shan Lin, Yu-Wen Ho
  • Publication number: 20060190965
    Abstract: Picture-on-picture technology is used in the present invention to divide a television screen into a main picture and suffix pictures. The main picture displays the selected channel. The three suffix pictures are used to display the favorite channels. Then, users can preview and browse the favorite channels.
    Type: Application
    Filed: November 15, 2005
    Publication date: August 24, 2006
    Inventors: Wan-Shan Lin, Yu-Wen Ho