Patents by Inventor Wen-Zhi Chang

Wen-Zhi Chang 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: 9233521
    Abstract: The present invention relates to a tin whisker mitigation material using thin film metallic glass underlayer, which is a thin film metallic glass (TFMG) formed between a metal substrate and a tin layer. Particularly, the TFMG can be a Zr46Ti26Ni28 underlayer or a Zr51.7Cu32.3Al9Ni underlayer, capable of blocking off the interaction occurring in the interface of a copper layer (the metal substrate) and the tin layer, so as to carry out the inhibition of tin whisker growth. Moreover, a variety of experiment data are proposed for proving that the TFMG of the Zr46Ti26Ni28 or the Zr51.7Cu32.3Al9Ni can indeed be used to replace the conventionally used thick tin layer for being the underlayer between the copper layer (the metal substrate) and the tin layer, and then effectively inhibit the interaction occurring in the Cu/Sn interface and the growth of tin whisker by low manufacturing cost way.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: January 12, 2016
    Assignee: National Taiwan University Of Science And Technology
    Inventors: Jinn Chu, I Made Wahyu Diyatmika, Yee-Wen Yen, Wen-Zhi Chang
  • Patent number: 9006699
    Abstract: The present invention relates to a resistive random access memory using amorphous metallic glass oxide as a storage medium, comprising a substrate, an insulation layer, a first electrode layer, a resistive memory layer, and a second electrode layer. In the present invention, an amorphous metallic glass oxide layer is mainly used as the resistive memory layer of the resistive random access memory. Therefore, the resistive random access memory with storage medium of amorphous metallic glass oxide thin film having advantages of low operation voltage, low power consumption, and high set/reset resistance ratio are provided without using any thermal annealing processes or forming processes.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: April 14, 2015
    Assignee: National Taiwan University of Science and Technology
    Inventors: Jinn Chu, Berhanu Tulu Kacha, Wen-Zhi Chang
  • Publication number: 20140370328
    Abstract: The present invention relates to a tin whisker mitigation material using thin film metallic glass underlayer, which is a thin film metallic glass (TFMG) formed between a metal substrate and a tin layer. Particularly, the TFMG can be a Zr46Ti26Ni28 underlayer or a Zr51.7Cu32.3Al9Ni underlayer, capable of blocking off the interaction occurring in the interface of a copper layer (the metal substrate) and the tin layer, so as to carry out the inhibition of tin whisker growth. Moreover, a variety of experiment data are proposed for proving that the TFMG of the Zr46Ti26Ni28 or the Zr51.7Cu32.3Al9Ni can indeed be used to replace the conventionally used thick tin layer for being the underlayer between the copper layer (the metal substrate) and the tin layer, and then effectively inhibit the interaction occurring in the Cu/Sn interface and the growth of tin whisker by low manufacturing cost way.
    Type: Application
    Filed: August 28, 2013
    Publication date: December 18, 2014
    Applicant: National Taiwan University of Science and Technology
    Inventors: Jinn Chu, I Made Wahyu Diyatmika, Yee-Wen Yen, Wen-Zhi Chang
  • Publication number: 20140291600
    Abstract: The present invention relates to a resistive random access memory using amorphous metallic glass oxide as a storage medium, comprising a substrate, an insulation layer, a first electrode layer, a resistive memory layer, and a second electrode layer. In the present invention, an amorphous metallic glass oxide layer is mainly used as the resistive memory layer of the resistive random access memory. Therefore, the resistive random access memory with storage medium of amorphous metallic glass oxide thin film having advantages of low operation voltage, low power consumption, and high set/reset resistance ratio are provided without using any thermal annealing processes or forming processes.
    Type: Application
    Filed: March 26, 2013
    Publication date: October 2, 2014
    Applicant: National Taiwan University of Science and Technology
    Inventors: Jinn Chu, Berhanu Tulu Kacha, Wen-Zhi Chang
  • Patent number: 8445888
    Abstract: The present invention relates to a resistive random access memory using the rare earth scandate thin film as the storage medium, comprising a substrate, an insulation layer, a first electrode layer, a resistive memory layer, and a second electrode layer. In the present invention, it uses an amorphous rare earth scandate layer as the resistive memory layer of the resistive random access memory. Therefore, the resistive random access memory using the rare earth scandate thin film as the storage medium having advantages of low operation voltage and low power consumption can easily be manufactured without using any forming process or thermal annealing process. Moreover, through the characteristics of unipolar resistance switching behavior revealed by the amorphous rare earth scandate layer, the resistive random access memory using rare earth scandate thin film as the storage medium is able to perform a high resistance state and a low resistance state.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: May 21, 2013
    Assignee: National Taiwan University of Science and Technology
    Inventors: Jinn Chu, Wen-Zhi Chang