Patents by Inventor Keon Jae Lee

Keon Jae Lee 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).

  • Publication number: 20110000060
    Abstract: Provided are a method for manufacturing a flexible device, a flexible device, a flexible piezoelectric device and a flexible capacitor manufactured by the same, and a method for manufacturing a flexible sensor. A method for manufacturing a flexible device includes: laminating a first metal layer on a silicon oxide layer on a silicon substrate; laminating a device on the first metal layer; annealing the first metal layer to oxidize the first metal into a first metal oxide; etching the first metal oxide so as to separate the device from the silicon oxide layer; and transferring the separated device to a flexible substrate using a transfer layer. According to the disclosed method for manufacturing a flexible device, differently from the prior art where the silicon substrate itself is etched, the metal oxide layer laminated on the silicon substrate is etched to separate the device from the substrate.
    Type: Application
    Filed: March 24, 2010
    Publication date: January 6, 2011
    Applicant: KAIST (Korea Advanced Institute of Science and Technology)
    Inventors: Keon Jae Lee, Suk Joong L. Kang, Jaemyung Chang, Kwi-il PARK, Seungjun Kim, Sang Yong Lee
  • Publication number: 20100289124
    Abstract: The present invention provides a high yield pathway for the fabrication, transfer and assembly of high quality printable semiconductor elements having selected physical dimensions, shapes, compositions and spatial orientations. The compositions and methods of the present invention provide high precision registered transfer and integration of arrays of microsized and/or nanosized semiconductor structures onto substrates, including large area substrates and/or flexible substrates. In addition, the present invention provides methods of making printable semiconductor elements from low cost bulk materials, such as bulk silicon wafers, and smart-materials processing strategies that enable a versatile and commercially attractive printing-based fabrication platform for making a broad range of functional semiconductor devices.
    Type: Application
    Filed: July 27, 2010
    Publication date: November 18, 2010
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Ralph G. NUZZO, John A. ROGERS, Etienne MENARD, Keon Jae LEE, Dahl-Young KHANG, Yugang SUN, Matthew MEITL, Zhengtao ZHU, Heung Cho KO, Shawn MACK
  • Patent number: 7799699
    Abstract: The present invention provides a high yield pathway for the fabrication, transfer and assembly of high quality printable semiconductor elements having selected physical dimensions, shapes, compositions and spatial orientations. The compositions and methods of the present invention provide high precision registered transfer and integration of arrays of microsized and/or nanosized semiconductor structures onto substrates, including large area substrates and/or flexible substrates. In addition, the present invention provides methods of making printable semiconductor elements from low cost bulk materials, such as bulk silicon wafers, and smart-materials processing strategies that enable a versatile and commercially attractive printing-based fabrication platform for making a broad range of functional semiconductor devices.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: September 21, 2010
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Ralph G. Nuzzo, John A. Rogers, Etienne Menard, Keon Jae Lee, Dahl-Young Khang, Yugang Sun, Matthew Meitl, Zhengtao Zhu, Heung Cho Ko, Shawn Mack
  • Publication number: 20100207172
    Abstract: In contrast to a conventional planar CMOS technique in design and fabrication for a field-effect transistor (FET), the present invention provides an SGT CMOS device formed on a conventional substrate using various crystal planes in association with a channel type and a pillar shape of an FET, without a need for a complicated device fabrication process. Further, differently from a design technique of changing a surface orientation in each planar FET, the present invention is designed to change a surface orientation in each SGT to achieve improvement in carrier mobility. Thus, a plurality of SGTs having various crystal planes can be formed on a common substrate to achieve a plurality of different carrier mobilities so as to obtain desired performance.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 19, 2010
    Inventors: Fujio Masuoka, Keon Jae Lee
  • Publication number: 20100072577
    Abstract: The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.
    Type: Application
    Filed: September 22, 2009
    Publication date: March 25, 2010
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Ralph G. NUZZO, John A. ROGERS, Etienne MENARD, Keon Jae LEE, Dahl-Young Khang, Yugang SUN, Matthew MEITL, Zhengtao ZHU
  • Patent number: 7662545
    Abstract: A method of making a microstructure includes selectively activating a portion of a surface of a silicon-containing elastomer, contacting the activated portion with a substance, and bonding the activated portion and the substance, such that the activated portion of the surface and the substance in contact with the activated portion are irreversibly attached. The selective activation may be accomplished by positioning a mask on the surface of the silicon-containing elastomer, and irradiating the exposed portion with UV radiation.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: February 16, 2010
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Ralph G. Nuzzo, William R. Childs, Michael J. Motala, Keon Jae Lee
  • Publication number: 20090294803
    Abstract: The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.
    Type: Application
    Filed: June 2, 2005
    Publication date: December 3, 2009
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Ralph G. Nuzzo, John A. Rogers, Etienne Menard, Keon Jae Lee, Dahl-Young Khang, Yugang Sun, Matthew Meitl, Zhengtao Zhu
  • Patent number: 7622367
    Abstract: The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: November 24, 2009
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Ralph G. Nuzzo, John A. Rogers, Etienne Menard, Keon Jae Lee, Dahl-Young Khang, Yugang Sun, Matthew Meitl, Zhengtao Zhu
  • Publication number: 20090199960
    Abstract: The present invention provides methods, systems and system components for transferring, assembling and integrating features and arrays of features having selected nanosized and/or microsized physical dimensions, shapes and spatial orientations. Methods of the present invention utilize principles of ‘soft adhesion’ to guide the transfer, assembly and/or integration of features, such as printable semiconductor elements or other components of electronic devices. Methods of the present invention are useful for transferring features from a donor substrate to the transfer surface of an elastomeric transfer device and, optionally, from the transfer surface of an elastomeric transfer device to the receiving surface of a receiving substrate. The present methods and systems provide highly efficient, registered transfer of features and arrays of features, such as printable semiconductor element, in a concerted manner that maintains the relative spatial orientations of transferred features.
    Type: Application
    Filed: June 9, 2006
    Publication date: August 13, 2009
    Inventors: Ralph G. Nuzzo, John A. Rogers, Etienne Menard, Keon Jae Lee, Dahl-Young Khang, Yugang Sun, Matthew Meitl, Zhengtao Zhu