Patents by Inventor Won-Joo Kim

Won-Joo Kim 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: 6900500
    Abstract: A buried transistor particularly suitable for SOI technology, where the transistor is fabricated within a trench in a substrate and the resulting transistor incorporates completely isolated active areas. The resulting substrate has a decreased topography and there is no need for polysilicon (or other) plugs to connect to the transistor, unless desired. With this invention, better control is achieved in processing, particularly of gate length. The substrate having the buried transistor can be silicon oxide bonded to another substrate to form an SOI structure.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: May 31, 2005
    Assignee: Micron Technology, Inc.
    Inventors: Theodore M. Taylor, Won-Joo Kim, John K. Skrovan
  • Patent number: 6838835
    Abstract: Methods of operating field emission displays are disclosed. In one embodiment, a method for operating a field emission display includes applying a voltage to an extraction grid with respect to an emitter in proximity to the extraction grid to extract electrons from the emitter, regulating a supply of electrons from the emitter in response to a control signal, and accelerating the electrons from the emitter towards a faceplate with an accelerating voltage that also reverse biases a semiconductor diode extending from a baseplate that includes the extraction grid and the emitter to the faceplate.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: January 4, 2005
    Assignee: Micron Technology, Inc.
    Inventor: Won-Joo Kim
  • Patent number: 6716081
    Abstract: A multi-layered structure, and method for producing same, which may include at least one glass layer anodically bonded to an intermediate layer. The intermediate layer may function as an anodic bonding layer, an etch stop layer, and/or a hard mask layer. A template may be formed of the multi-layered structure by forming a desired pattern of openings therein by way of, for example, etching. Such a template may, for example, be used in the alignment and adherence of spacer structures to an electrode plate during the fabrication of flat panel displays. When used in this context, the construction of such a template results in more precise control of the patterning and sizing of the holes formed therein which thereby allows for more precise placement of spacer structures as well as the use of spacer structures exhibiting relatively higher aspect ratios during the fabrication of flat panel displays.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: April 6, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Won-Joo Kim, Robert J. Hanson, David H. Chun, Gary A. Evans, Seungwoo Lee, Jim J. Browning
  • Publication number: 20040041149
    Abstract: Gate lines are formed on a substrate. A gate insulating layer, an intrinsic a-Si layer, an extrinsic a-Si layer, a lower film of Cr and an upper film of Al containing metal are sequentially deposited. A photoresist having thicker first portions on wire areas and thinner second portions on channel areas is formed on the upper film. The upper film on remaining areas are wet-etched, and the lower film and the a-Si layers on the remaining areas are dry-etched along with the second portions of the photoresist. The upper film, the lower film, and the extrinsic a-Si layer on the channel areas are removed. The removal of the upper film and the lower film on the channel areas are performed by wet etching, and the first portions of the photoresist are removed after the removal of the upper film on the channel areas.
    Type: Application
    Filed: September 2, 2003
    Publication date: March 4, 2004
    Inventors: Bum-Gee Baek, Kwon-Young Choi, Young-Joon Rhee, Bong-Joo Kang, Seung-Taek Lim, Hyang-Shik Kong, Won-Joo Kim
  • Publication number: 20040036114
    Abstract: A buried transistor particularly suitable for SOI technology, where the transistor is fabricated within a trench in a substrate and the resulting transistor incorporates completely isolated active areas. The resulting substrate has a decreased topography and there is no need for polysilicon (or other) plugs to connect to the transistor, unless desired. With this invention, better control is achieved in processing, particularly of gate length. The substrate having the buried transistor can be silicon oxide bonded to another substrate to form an SOI structure.
    Type: Application
    Filed: August 21, 2002
    Publication date: February 26, 2004
    Inventors: Theodore M. Taylor, Won-Joo Kim, John K. Skrovan
  • Publication number: 20030164350
    Abstract: In devices such as flat panel displays, an aluminum oxide layer is provided between an aluminum layer and an ITO layer when such materials would otherwise be in contact to protect the ITO from optical and electrical defects sustained, for instance, during anodic bonding and other fabrication steps. This aluminum oxide barrier layer is preferably formed either by: (1) partially or completely anodizing an aluminum layer formed over the ITO layer, or (2) an in situ process forming aluminum oxide either over the ITO layer or over an aluminum layer formed on the ITO layer. After either of these processes, an aluminum layer is then formed over the aluminum oxide layer.
    Type: Application
    Filed: September 21, 2001
    Publication date: September 4, 2003
    Inventors: Robert J. Hanson, Won-Joo Kim, Mike E. Pugh
  • Patent number: 6525462
    Abstract: A display includes a baseplate and an emitter formed on the baseplate. The display also includes a faceplate having a cathodoluminescent coating on a surface facing the baseplate and the emitter. A plurality of spacers separate the faceplate and the baseplate to prevent bowing of the faceplate or the baseplate towards each other. The spacers are formed from silicon, simplifying field emission device assembly and resulting in a superior display.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: February 25, 2003
    Assignee: Micron Technology, Inc.
    Inventor: Won-Joo Kim
  • Patent number: 6491561
    Abstract: Methods of manufacturing faceplates for field emission displays are disclosed. In one embodiment, a method for manufacturing a faceplate includes forming a transparent conductive layer on a transparent viewing screen, forming an insulating layer on the transparent conductive layer, anodically bonding silicon to the insulating layer, directionally etching the silicon to form isolated regions of silicon on the insulating layer, and etching the insulating layer using the isolated regions of silicon as a mask.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: December 10, 2002
    Assignee: Micron Technology, Inc.
    Inventor: Won-Joo Kim
  • Patent number: 6471879
    Abstract: In devices such as flat panel displays, an aluminum oxide layer is provided between an aluminum layer and an ITO layer when such materials would otherwise be in contact to protect the ITO from optical and electrical defects sustained, for instance, during anodic bonding and other fabrication steps. This aluminum oxide barrier layer is preferably formed either by: (1) partially or completely anodizing an aluminum layer formed over the ITO layer, or (2) an in situ process forming aluminum oxide either over the ITO layer or over an aluminum layer formed on the ITO layer. After either of these processes, an aluminum layer is then formed over the aluminum oxide layer.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: October 29, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Robert J. Hanson, Won-Joo Kim, Mike E. Pugh
  • Publication number: 20020111104
    Abstract: A multi-layered structure, and method for producing same, which may include at least one glass layer anodically bonded to an intermediate layer. The intermediate layer may function as an anodic bonding layer, an etch stop layer, and/or a hard mask layer. A template may be formed of the multi-layered structure by forming a desired pattern of openings therein by way of, for example, etching. Such a template may, for example, be used in the alignment and adherence of spacer structures to an electrode plate during the fabrication of flat panel displays. When used in this context, the construction of such a template results in more precise control of the patterning and sizing of the holes formed therein which thereby allows for more precise placement of spacer structures as well as the use of spacer structures exhibiting relatively higher aspect ratios during the fabrication of flat panel displays.
    Type: Application
    Filed: April 1, 2002
    Publication date: August 15, 2002
    Inventors: Won-Joo Kim, Robert J. Hanson, David H. Chun, Gary A. Evans, Seungwoo Lee, Jim J. Browning
  • Patent number: 6413135
    Abstract: A multi-layered structure, and method for producing same, which may include at least one glass layer anodically bonded to an intermediate layer. The intermediate layer may function as a anodic bonding layer, an etch stop layer, and/or a hard mask layer. A template may be formed of the multi-layered structure by forming a desired pattern of openings therein by way of, for example, etching. Such a template may, for example, be used in the alignment and adherence of spacer structures to an electrode plate during the fabrication of flat panel displays. When used in this context, the construction of such a template results in more precise control of the patterning and sizing of the holes formed therein which thereby allows for more precise placement of spacer structures as well as the use of spacer structures exhibiting relatively higher aspect ratios during the fabrication of flat panel displays.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: July 2, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Won-Joo Kim, Robert J. Hanson, David H. Chun, Gary A. Evans, Seungwoo Lee, Jim J. Browning
  • Publication number: 20020063505
    Abstract: A display includes a baseplate and an emitter formed on the baseplate. The display also includes a faceplate having a cathodoluminescent coating on a surface facing the baseplate and the emitter. A plurality of spacers separate the faceplate and the baseplate to prevent bowing of the faceplate or the baseplate towards each other. The spacers are formed from silicon, simplifying field emission device assembly and resulting in a superior display.
    Type: Application
    Filed: November 2, 2001
    Publication date: May 30, 2002
    Inventor: Won-Joo Kim
  • Publication number: 20020041164
    Abstract: A display includes a baseplate and an emitter formed on the baseplate. The display also includes a faceplate having a cathodoluminescent coating on a surface facing the baseplate and the emitter. A plurality of spacers separate the faceplate and the baseplate to prevent bowing of the faceplate or the baseplate towards each other. The spacers are formed from silicon, simplifying field emission device assembly and resulting in a superior display.
    Type: Application
    Filed: November 6, 2001
    Publication date: April 11, 2002
    Inventor: Won-Joo Kim
  • Publication number: 20020011459
    Abstract: In devices such as flat panel displays, an aluminum oxide layer is provided between an aluminum layer and an ITO layer when such materials would otherwise be in contact to protect the ITO from optical and electrical defects sustained, for instance, during anodic bonding and other fabrication steps. This aluminum oxide barrier layer is preferably formed either by: (1) partially or completely anodizing an aluminum layer formed over the ITO layer, or (2) an in situ process forming aluminum oxide either over the ITO layer or over an aluminum layer formed on the ITO layer. After either of these processes, an aluminum layer is then formed over the aluminum oxide layer.
    Type: Application
    Filed: September 21, 2001
    Publication date: January 31, 2002
    Inventors: Robert J. Hanson, Won-Joo Kim, Mike E. Pugh
  • Patent number: 6322712
    Abstract: In devices such as flat panel displays, an aluminum oxide layer is provided between an aluminum layer and an ITO layer when such materials would otherwise be in contact to protect the ITO from optical and electrical defects sustained, for instance, during anodic bonding and other fabrication steps. This aluminum oxide barrier layer is preferably formed either by: (1) partially or completely anodizing an aluminum layer formed over the ITO layer, or (2) an in situ process forming aluminum oxide either over the ITO layer or over an aluminum layer formed on the ITO layer. After either of these processes, an aluminum layer is then formed over the aluminum oxide layer.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: November 27, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Robert J. Hanson, Won-Joo Kim, Mike E. Pugh
  • Patent number: 5851918
    Abstract: Methods of fabricating a liquid crystal display element on a substrate includes forming a thin film transistor on the substrate, the thin film transistor including a gate electrode covered by a channel region and a gate pad conductively connected to the gate electrode. A pad electrode is formed on the substrate, spaced apart from the gate pad. A portion of the gate pad and a portion of the pad electrode are exposed, and the exposed portion of the gate pad selectively plated to thereby form a conductive barrier layer on the exposed portion of the gate pad. A pixel electrode is then formed contacting the conductive barrier layer and the exposed portion of the pad electrode to thereby connect the gate pad and the pad electrode. Preferably, the selective plating includes electroless plating the exposed portion of the gate pad to thereby form the conductive barrier layer.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: December 22, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-ho Song, Won-joo Kim
  • Patent number: 5444026
    Abstract: The present invention forms a intermediate layer between a conductive layer and BPSG layer. In one embodiment, this intermediate layer is a buffer layer that absorbs excess P ions from the BPSG layer to suppress the formation of bubbles and thereby prevent short circuits that may be caused due to the presence of bubbles in the BPSG layer. In the second embodiment the intermediate layer is a thin nitride layer, which prevents the conductive layer and BPSG layer from being in direct contact with each other to suppress the formation of bubbles and also prevent short circuits that may be caused due to the presence of bubbles in the BPSG layer.
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: August 22, 1995
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-kyu Kim, Myeong-beom Lee, Ji-hyun Choi, Woo-in Joung, Young-jin Im, Won-joo Kim, Jin-gi Hong, Geung-won Kang