Patents by Inventor Ji-Hwa Lee

Ji-Hwa 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).

  • Patent number: 8125589
    Abstract: In a directly-illuminated liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. The diffuser layer is attached to a substrate which is separate from the light source and the LCD panel, or may be attached to either the LCD panel or, when using a two dimensional light source, to the light source. The other light management layers may also be attached to the separate substrate or to the LCD panel or two-dimensional light source. High levels of illumination uniformity at the LCD may be achieved with a uniform (non-patterned) diffuser, even with relatively low levels of diffusion, when the diffuser is used with a brightness enhancing layer.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: February 28, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Byungsoo Ko, Mark D. Gehlsen, Chingwen Chen, Robert M. Emmons, James W. Laumer, Ji-Hyung Kim, Ji-Hwa Lee, Kang-il Seo, Ryan T. Fabick, Linda M. Rivard, Kenneth A. Epstein, Chideuk Kim, Youngsoo Park
  • Publication number: 20100277668
    Abstract: Optical film laminates of birefringent polyester films and adhesive are disclosed. The laminates have a thickness of at least 10 mils (0.25 mm). The laminates of the invention are useful in displays having a diagonal of 37 in (94 cm) or greater.
    Type: Application
    Filed: December 8, 2008
    Publication date: November 4, 2010
    Inventors: Lowell C. Frank, Stephen A. Johnson, Ji-Hyung Kim, Byung-Soo Ko, Ji-Hwa Lee, Yufeng Liu
  • Publication number: 20100279566
    Abstract: A passive electrical article including a dielectric layer having a nonwoven material.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 4, 2010
    Inventors: Rui Yang, Guoping Mao, Dipankar Ghosh, Ji-Hwa Lee, Sungbae Min, Justine A. Mooney
  • Publication number: 20100188754
    Abstract: In a liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. In some embodiments, the diffuser layer is attached to the lower side of the LCD panel. Some, or all, of the light management layers may be attached together as a laminated stack of films. In some embodiments, the diffuser layer is formed with a recessed region on one side and another optical film positioned within the recessed region.
    Type: Application
    Filed: March 15, 2010
    Publication date: July 29, 2010
    Inventors: Mark D. Gehlsen, Linda M. Rivard, Ryan T. Fabick, James W. Laumer, Kenneth A. Epstein, Byung-soo Ko, Ji-Hyung Kim, Sang-Dae Kim, Ji-Hwa Lee
  • Patent number: 7710511
    Abstract: In a liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. In some embodiments, the diffuser layer is attached to the lower side of the LCD panel. Some, or all, of the light management layers may be attached together as a laminated stack of films. In some embodiments, the diffuser layer is formed with a recessed region on one side and another optical film positioned within the recessed region.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: May 4, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Mark D. Gehlsen, Linda M. Rivard, Ryan T. Fabick, James W. Laumer, Kenneth A. Epstein, Byung-soo Ko, Ji-Hyung Kim, Sang-Dae Kim, Ji-Hwa Lee
  • Publication number: 20090122228
    Abstract: In a directly-illuminated liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. The diffuser layer is attached to a substrate which is separate from the light source and the LCD panel, or may be attached to either the LCD panel or, when using a two dimensional light source, to the light source. The other light management layers may also be attached to the separate substrate or to the LCD panel or two-dimensional light source. High levels of illumination uniformity at the LCD may be achieved with a uniform (non-patterned) diffuser, even with relatively low levels of diffusion, when the diffuser is used with a brightness enhancing layer.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 14, 2009
    Inventors: Byungsoo Ko, Mark D. Gehlsen, Chingwen Chen, Robert M. Emmons, James W. Laumer, Ji-Hyung Kim, Ji-Hwa Lee, Kang-il Seo, Ryan T. Fabick, Linda M. Rivard, Kenneth A. Epstein, Chideuk Kim, Youngsoo Park
  • Patent number: 7446827
    Abstract: In a directly-illuminated liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. The diffuser layer is attached to a substrate which is separate from the light source and the LCD panel, or may be attached to either the LCD panel or, when using a two dimensional light source, to the light source. The other light management layers may also be attached to the separate substrate or to the LCD panel or two-dimensional light source. High levels of illumination uniformity at the LCD may be achieved with a uniform (non-patterned) diffuser, even with relatively low levels of diffusion, when the diffuser is used with a brightness enhancing layer.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: November 4, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Byungsoo Ko, Mark D. Gehlsen, Chingwen Chen, Robert M. Emmons, James W. Laumer, Ji-Hyung Kim, Ji-Hwa Lee, Kang-il Seo, Ryan T. Fabick, Linda M. Rivard, Kenneth A. Epstein, Chideuk Kim, Youngsoo Park
  • Publication number: 20080002256
    Abstract: An optical article has a substrate including a reflective polarizing element preferentially reflecting light having a first polarization state and preferentially transmitting light having a second polarization state and a beaded layer disposed on the substrate. The beaded layer includes transparent binder and a plurality of transparent beads dispersed therein. A normal angle gain of the optical article with the beaded layer is increased when compared to a normal angle gain of the same optical article but without the beaded layer.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 3, 2008
    Inventors: Itsuroh Sasagawa, Wei Feng Zhang, Yan Yan Zhang, Hoon-Sung Jung, Byung-soo Ko, Ji-Hwa Lee, Wonho Lee, Mark D. Gehlsen, Stephen J. Etzkorn, Susan E. Anderson
  • Publication number: 20070171325
    Abstract: An optical device such as an LCD has a package of optical films positioned between a backlight and a display panel for enhancing the optical performance of the device. The package of optical films includes a first layer and a third layer and a second layer disposed between the first and third layers. The second layer is smaller than the first layer, so that the second layer covers a first region of the first layer but not a second region of the first layer. The third layer is attached to the second region of the first layer. In some embodiments the first layer has a structured surface facing the second layer. In other embodiments, the second layer has a structured surface facing the third layer. In other embodiments, both the first and second layers have structured surfaces facing the third layer.
    Type: Application
    Filed: January 20, 2006
    Publication date: July 26, 2007
    Inventors: Byung-Soo Ko, Ji-Hyung Kim, Ji-Hwa Lee, Byoung-Kyu Kim
  • Publication number: 20060082698
    Abstract: In a directly-illuminated liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. The diffuser layer is attached to a substrate which is separate from the light source and the LCD panel, or may be attached to either the LCD panel or, when using a two dimensional light source, to the light source. The other light management layers may also be attached to the separate substrate or to the LCD panel or two-dimensional light source. High levels of illumination uniformity at the LCD may be achieved with a uniform (non-patterned) diffuser, even with relatively low levels of diffusion, when the diffuser is used with a brightness enhancing layer.
    Type: Application
    Filed: October 15, 2004
    Publication date: April 20, 2006
    Inventors: Byungsoo Ko, Mark Gehlsen, Chingwen Chen, Robert Emmons, James Laumer, Ji-Hyung Kim, Ji-Hwa Lee, Kang-il Seo, Ryan Fabick, Linda Rivard, Kenneth Epstein, Chideuk Kim, Youngsoo Park
  • Publication number: 20060082699
    Abstract: In a liquid crystal display (LCD), for example an LCD monitor or an LCD-TV, a number of light management films, including a diffuser layer, lie between the light source and the LCD panel to provide bright, uniform illumination. In some embodiments, the diffuser layer is attached to the lower side of the LCD panel. Some, or all, of the light management layers may be attached together as a laminated stack of films. In some embodiments, the diffuser layer is formed with a recessed region on one side and another optical film positioned within the recessed region.
    Type: Application
    Filed: October 6, 2005
    Publication date: April 20, 2006
    Inventors: Mark Gehlsen, Linda Rivard, Ryan Fabick, James Laumer, Kenneth Epstein, Byung-soo Ko, Ji-Hyung Kim, Sang-Dae Kim, Ji-Hwa Lee
  • Patent number: 6720262
    Abstract: A method of forming copper conductors for interconnecting active and passive elements as well as signal and power lines for circuits and devices on silicon wafers is disclosed. The method disclosed herein involves with using catalysts in conjunction with a chemical vapor deposition(CVD) process with typically using copper as a source material for forming interconnecting conductors. Interconnecting method for filling trenches, via holes, contacts, large trenches and holes for power devices and lines as well as for forming large passive elements is also disclosed. Disclosed herein are also a method of filling narrow and deep trenches and small in diameter and deep holes, and a method of forming very thin film on the flat top surface so that an etchback process, such as wet or dry etchback as well as plasma etchback processes, can be used for removing a thin film in preparation for subsequent processing steps, thereby rather expensive chemical mechanical polishing(CMP) process need not be used.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: April 13, 2004
    Assignee: Genitech, Inc.
    Inventors: Won Yong Koh, Hyung Sang Park, Ji Hwa Lee
  • Patent number: 6623799
    Abstract: A method of chemically depositing a copper film in which a bromine or iodine-containing catalyst component is employed to enhance the deposition rate. The present invention is characterized in that the catalyst component floats on the film surface during the film formation. Accordingly, a film deposition having superior step coverage and high deposition rate is obtained.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: September 23, 2003
    Assignee: Genitech Co., Ltd.
    Inventors: Ji-Hwa Lee, Eui-Seong Hwang
  • Publication number: 20010019891
    Abstract: A method of forming copper conductors for interconnecting active and passive elements as well as signal and power lines for circuits and devices on silicon wafers is disclosed. The method disclosed herein involves with using catalysts in conjunction with a chemical vapor deposition(CVD) process with typically using copper as a source material for forming interconnecting conductors. Interconnecting method for filling trenches, via holes, contacts, large trenches and holes for power devices and lines as well as for forming large passive elements is also disclosed. Disclosed herein are also a method of filling narrow and deep trenches and small in diameter and deep holes, and a method of forming very thin film on the flat top surface so that an etchback process, such as wet or dry etchback as well as plasma etchback processes, can be used for removing a thin film in preparation for subsequent processing steps, thereby rather expensive chemical mechanical polishing(CMP) process need not be used.
    Type: Application
    Filed: December 15, 2000
    Publication date: September 6, 2001
    Applicant: GENITECH CO., LTD.
    Inventors: Won Yong Koh, Hyung Sang Park, Ji Hwa Lee