Patents by Inventor Junghun CHAE

Junghun CHAE 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: 9440848
    Abstract: This disclosure provides systems, methods and apparatus including devices that include layers of passivation material covering at least a portion of an exterior surface of a thin film component within a microelectromechanical device. The thin film component may include an electrically conductive layer that connects via an anchor to a conductive surface on a substrate. The disclosure further provides processes for providing a first layer of passivation material on an exterior surface of a thin film component and for electrically connecting that thin film component to a conductive surface on a substrate. The disclosure further provides processes for providing a second layer of passivation material on any exposed surfaces of the thin film component after release of the microelectromechanical device.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: September 13, 2016
    Assignees: Pixtronix, Inc., Sharp Corporation, Sharp Kabushiki Kaisha
    Inventors: Teruo Sasagawa, Junghun Chae, Jasper Lodewyk Steyn, Takeshi Hara, Asahi Yamato
  • Publication number: 20160090299
    Abstract: This disclosure provides systems, methods and apparatus including devices that include layers of passivation material covering at least a portion of an exterior surface of a thin film component within a microelectromechanical device. The thin film component may include an electrically conductive layer that connects via an anchor to a conductive surface on a substrate. The disclosure further provides processes for providing a first layer of passivation material on an exterior surface of a thin film component and for electrically connecting that thin film component to a conductive surface on a substrate. The disclosure further provides processes for providing a second layer of passivation material on any exposed surfaces of the thin film component after release of the microelectromechanical device.
    Type: Application
    Filed: May 28, 2015
    Publication date: March 31, 2016
    Inventors: Teruo Sasagawa, Junghun Chae, Jasper Lodewyk Steyn, Takeshi Hara, Asahi Yamato
  • Patent number: 8610986
    Abstract: Micromirrors and micromirror arrays described herein are useful, for example in maskless photolithography systems and methods and projection display devices and methods. According to one aspect, the micromirrors comprise a polymer structural layer and a reflective dielectric multilayer for selective reflection and/or redirection of incoming electromagnetic radiation. According to another aspect, incorporation of a reflective dielectric multilayer allows for use of polymer structural materials in micromirrors and prevents damage to such polymer materials due to excessive heating from absorption of electromagnetic radiation, as the reflective dielectric multilayers are highly reflective and minimize heating of the micromirror components. According to yet a further aspect, top down fabrication methods are described herein for making a micromirror comprising a polymer structural layer and a reflective dielectric multilayer.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: December 17, 2013
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Kanti Jain, Junghun Chae, Kevin Lin, Hyunjong Jin
  • Patent number: 8546067
    Abstract: This invention provides photoablation—based processing techniques and materials strategies for making, assembling and integrating patterns of materials for the fabrication of electronic, optical and opto-electronic devices. Processing techniques of the present invention enable high resolution and/or large area patterning and integration of porous and/or nano- or micro-structured materials comprising active or passive components of a range of electronic devices, including integrated circuits (IC), microelectronic and macroelectronic systems, microfluidic devices, biomedical devices, sensing devices and device arrays, and nano- and microelectromechanical systems.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: October 1, 2013
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Kanti Jain, Junghun Chae
  • Patent number: 8420978
    Abstract: A high-throughput, low cost, patterning platform is provided that is an alternative to conventional photolithography and direct laser ablation patterning techniques. The processing methods are useful for making patterns of microsized and/or nanosized structures having accurately selected physical dimensions and spatial orientation that comprise active and passive components of a range of microelectronic devices. Processing provided by the methods is compatible with large area substrates, such as device substrates for semiconductor integrated circuits, displays, and microelectronic device arrays and systems, and is useful for fabrication applications requiring patterning of layered materials, such as patterning thin film layers in thin film electronic devices.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: April 16, 2013
    Assignees: The Board of Trustees of the University of Illinois, Anvik Corporation
    Inventors: Kanti Jain, Junghun Chae, Sreeram Appasamy
  • Publication number: 20100255426
    Abstract: Micromirrors and micromirror arrays described herein are useful, for example in maskless photolithography systems and methods and projection display devices and methods. According to one aspect, the micromirrors comprise a polymer structural layer and a reflective dielectric multilayer for selective reflection and/or redirection of incoming electromagnetic radiation. According to another aspect, incorporation of a reflective dielectric multilayer allows for use of polymer structural materials in micromirrors and prevents damage to such polymer materials due to excessive heating from absorption of electromagnetic radiation, as the reflective dielectric multilayers are highly reflective and minimize heating of the micromirror components. According to yet a further aspect, top down fabrication methods are described herein for making a micromirror comprising a polymer structural layer and a reflective dielectric multilayer.
    Type: Application
    Filed: April 6, 2009
    Publication date: October 7, 2010
    Inventors: Kanti JAIN, Junghun Chae, Kevin Lin, Hyunjong Jin
  • Publication number: 20090239042
    Abstract: This invention provides photoablation—based processing techniques and materials strategies for making, assembling and integrating patterns of materials for the fabrication of electronic, optical and opto-electronic devices. Processing techniques of the present invention enable high resolution and/or large area patterning and integration of porous and/or nano- or micro-structured materials comprising active or passive components of a range of electronic devices, including integrated circuits (IC), microelectronic and macroelectronic systems, microfluidic devices, biomedical devices, sensing devices and device arrays, and nano- and microelectromechanical systems.
    Type: Application
    Filed: March 21, 2008
    Publication date: September 24, 2009
    Inventors: Kanti JAIN, Junghun CHAE
  • Publication number: 20080176398
    Abstract: Methods of the present invention provide a high-throughput, low cost, patterning platform that is an alternative to conventional photolithography and direct laser ablation patterning techniques. The present processing methods are useful for making patterns of microsized and/or nanosized structures having accurately selected physical dimensions and spatial orientation that comprise active and passive components of a range of microelectronic devices. Processing provided by the present methods is compatible with large area substrates, such as device substrates for semiconductor integrated circuits, displays, and microelectronic device arrays and systems, and is useful for fabrication applications requiring patterning of layered materials, such as patterning thin film layers in thin film electronic devices.
    Type: Application
    Filed: January 18, 2007
    Publication date: July 24, 2008
    Inventors: Kanti Jain, Junghun Chae, Sreeram Appasamy