Patents by Inventor Hee-Hwan Choe

Hee-Hwan Choe 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: 8305507
    Abstract: A thin film transistor array panel is provided, which includes a gate line, a data line intersecting the gate line, a storage electrode apart from the gate and data lines, a thin film transistor connected to the gate and data lines and having a drain electrode, a pixel electrode connected to the drain electrode, a first insulating layer over the thin film transistor and disposed under the pixel electrode, and a second insulating layer disposed on the first insulating layer and having an opening exposing the first insulating layer on the storage electrode.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: November 6, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hye-Young Ryu, Jang-Soo Kim, Sang-Gab Kim, Hong-Kee Chin, Min-Seok Oh, Hee-Hwan Choe, Shi-Yul Kim
  • Patent number: 8093595
    Abstract: A method of manufacturing a thin film array panel is provided, which includes: forming a gate line formed on a substrate; forming a gate insulating layer on the gate line; forming a semiconductor layer on the gate insulating layer; forming an ohmic contact layer on the semiconductor layer; forming a data line and a drain electrode disposed at least on the ohmic contact layer, forming an oxide on the data line; etching the ohmic contact layer using the data line and the drain electrode as an etch mask; and forming a pixel electrode connected to the drain electrode.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: January 10, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Gab Kim, Sung-Chul Kang, Ho-Min Kang, In-Ho Song, Hee-Hwan Choe
  • Patent number: 7876412
    Abstract: A method for manufacturing a TFT array panel including forming a gate line having a gate electrode on a insulating layer, a gate insulating layer on the gate line, a semiconductor on the gate insulating layer, an ohmic contact on the semiconductor, a data line having a source electrode and a drain electrode apart form the source electrode on the ohmic contact, a passivation layer having a contact hole to expose the drain electrode, and a pixel electrode connected to the drain electrode through the contact hole. The drain electrode and the source electrode are formed by a photolithography using a negative photoresist pattern. The negative photoresist pattern includes a first portion having a first thickness corresponding to a channel area, a second portion having a second thickness corresponding to a data line area, and a third portion having a third thickness corresponding to another area.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: January 25, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Gab Kim, Min-Seok Oh, Hong-Kee Chin, Jeong-Min Park, Shi-Yul Kim, Hee-Hwan Choe
  • Publication number: 20100140626
    Abstract: A method for manufacturing a TFT array panel including forming a gate line having a gate electrode on a insulating layer, a gate insulating layer on the gate line, a semiconductor on the gate insulating layer, an ohmic contact on the semiconductor, a data line having a source electrode and a drain electrode apart form the source electrode on the ohmic contact, a passivation layer having a contact hole to expose the drain electrode, and a pixel electrode connected to the drain electrode through the contact hole. The drain electrode and the source electrode are formed by a photolithography using a negative photoresist pattern. The negative photoresist pattern includes a first portion having a first thickness corresponding to a channel area, a second portion having a second thickness corresponding to a data line area, and a third portion having a third thickness corresponding to another area.
    Type: Application
    Filed: February 11, 2010
    Publication date: June 10, 2010
    Inventors: Sang-Gab Kim, Min-Seok Oh, Hong-Kee Chin, Jeong-Min Park, Shi-Yul Kim, Hee-Hwan Choe
  • Patent number: 7713798
    Abstract: Disclosed are a thin film transistor substrate of an LCD device and a method of manufacturing the same. The thin film transistor substrate includes a nickel-silicide layer formed on an insulating layer pattern including silicon and a metal layer formed on the nickel-silicide layer. Nickel is coated on the insulating layer pattern including silicon and a metal material is coated on the nickel-coated layer. After that, a heat treatment is performed at about 200 to about 350° C. to obtain the nickel-silicide layer. Since the thin film transistor substrate of the LCD device is manufactured by applying the nickel-silicide wiring, a device having low resistivity and good ohmic contact property can be obtained.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: May 11, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Oh Jeong, Beom-Seok Cho, Hee-Hwan Choe
  • Patent number: 7688417
    Abstract: A method for manufacturing a TFT array panel including forming a gate line having a gate electrode on a insulating layer, a gate insulating layer on the gate line, a semiconductor on the gate insulating layer, an ohmic contact on the semiconductor, a data line having a source electrode and a drain electrode apart form the source electrode on the ohmic contact, a passivation layer having a contact hole to expose the drain electrode, and a pixel electrode connected to the drain electrode through the contact hole. The drain electrode and the source electrode are formed by a photolithography using a negative photoresist pattern. The negative photoresist pattern includes a first portion having a first thickness corresponding to a channel area, a second portion having a second thickness corresponding to a data line area, and a third portion having a third thickness corresponding to another area.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: March 30, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Gab Kim, Min-Seok Oh, Hong-Kee Chin, Jeong-Min Park, Shi-Yul Kim, Hee-Hwan Choe
  • Publication number: 20100047946
    Abstract: A method of manufacturing a thin film array panel is provided, which includes: forming a gate line formed on a substrate; forming a gate insulating layer on the gate line; forming a semiconductor layer on the gate insulating layer; forming an ohmic contact layer on the semiconductor layer; forming a data line and a drain electrode disposed at least on the ohmic contact layer, forming an oxide on the data line; etching the ohmic contact layer using the data line and the drain electrode as an etch mask; and forming a pixel electrode connected to the drain electrode.
    Type: Application
    Filed: October 30, 2009
    Publication date: February 25, 2010
    Inventors: Sang-Gab Kim, Sung-Chul Kang, Ho-Min Kang, In-Ho Song, Hee-Hwan Choe
  • Patent number: 7638800
    Abstract: First, a Cr film and a CrOx film are deposited and patterned using an etchant including 8-12% Ce(NH4)2(NO3)6, 10-20% NH3 and remaining ultra pure water to form a gate wire including a plurality of gate lines, a plurality of gate electrodes and a plurality of gate pads. Next, a gate insulating film, a semiconductor layer and an ohmic contact layer are formed in sequence. A Cr film and CrOx film are deposited in sequence and patterned using an etchant including 8-12% Ce(NH4)2(NO3)6, 10-20% NH3 and remaining ultra pure water to form a data wire including a plurality of data lines, a plurality of source electrodes, a plurality of drain electrodes and a plurality of data pads. A passivation layer is deposited and patterned to form a plurality of contact holes respectively exposing the drain electrodes, the gate pads and the data pads.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: December 29, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hee Yu, Mun-Pyo Hong, Soo-Guy Rho, Nam-Seok Rho, Keun-Kyu Song, Hee-Hwan Choe, Bo-Sung Kim, Sang-Gab Kim, Sung-Chul Kang, Hong-Sick Park
  • Patent number: 7619249
    Abstract: A method of manufacturing a thin film array panel is provided, which includes: forming a gate line formed on a substrate; forming a gate insulating layer on the gate line; forming a semiconductor layer on the gate insulating layer; forming an ohmic contact layer on the semiconductor layer; forming a data line and a drain electrode disposed at least on the ohmic contact layer; forming an oxide on the data line; etching the ohmic contact layer using the data line and the drain electrode as an etch mask; and forming a pixel electrode connected to the drain electrode.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: November 17, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Gab Kim, Sung-Chul Kang, Ho-Min Kang, In-Ho Song, Hee-Hwan Choe
  • Patent number: 7605416
    Abstract: A gate wire including a gate line and a gate electrode is formed on a substrate and a gate insulating layer is formed on the substrate. A semiconductor pattern and an etching assistant pattern are formed on the gate insulating layer and a source/drain conductor pattern and an etching assistant layer are formed on the semiconductor pattern and the etching assistant pattern. A data wire including a data line and source and drain electrodes separated from each other is formed by removing the etching assistant layer and partly removing the source/drain conductor pattern. A pixel electrode connected to the drain electrodes is formed.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: October 20, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mun-Pyo Hong, Nam-Seok Roh, Hee-Hwan Choe, Keun-Kyu Song
  • Patent number: 7592635
    Abstract: Disclosed is an organic electroluminescent (EL) device for enhancing the luminous efficiency. A first electrode is formed on a substrate. A CVD insulating film of low dielectric constant having an opening exposing the first electrode is formed on the first electrode and the substrate. An organic EL layer and a second electrode are sequentially stacked on the opening. A wall surrounding a region of the organic EL layer is formed of the CVD insulating film of low dielectric constant, the surface treatment of the pixel electrode can be performed using O2 plasma enhance luminance properties.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: September 22, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Koo Chung, Beom-Rak Choi, Joon-Hoo Choi, Sang-Gab Kim, Hee-Hwan Choe
  • Patent number: 7588972
    Abstract: A thin film transistor includes a gate electrode on a substrate, a gate insulating layer on the substrate, a channel pattern, a source electrode and a drain electrode. The channel pattern includes a semiconductor pattern formed on the gate electrode and overlaying the gate electrode as well as first and second conductive adhesive patterns formed on the semiconductor pattern and spaced apart from each other. The source electrode includes a first barrier pattern, a source pattern and a first capping pattern sequentially formed on the first conductive adhesive pattern. The drain electrode includes a second barrier pattern, a drain pattern and a second capping pattern sequentially formed on the second conductive adhesive pattern. Etched portions of the first and second conductive adhesive patterns have a substantially vertical profile to prevent the exposure of the source and drain electrodes, thereby improving the characteristics of the thin film transistor.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: September 15, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Gab Kim, Shi-Yul Kim, Hong-Sick Park, Hee-Hwan Choe, Hong-Kee Chin, Min-Seok Oh
  • Publication number: 20090212298
    Abstract: Disclosed are a thin film transistor substrate of an LCD device and a method of manufacturing the same. The thin film transistor substrate includes a nickel-silicide layer formed on an insulating layer pattern including silicon and a metal layer formed on the nickel-silicide layer. Nickel is coated on the insulating layer pattern including silicon and a metal material is coated on the nickel-coated layer. After that, a heat treatment is performed at about 200 to about 350° C. to obtain the nickel-silicide layer. Since the thin film transistor substrate of the LCD device is manufactured by applying the nickel-silicide wiring, a device having low resistivity and good ohmic contact property can be obtained.
    Type: Application
    Filed: December 18, 2008
    Publication date: August 27, 2009
    Inventors: Chang-Oh Jeong, Beom-Seok Cho, Hee-Hwan Choe
  • Patent number: 7501297
    Abstract: A method of manufacturing a thin film transistor array panel is provided, The method includes: forming a gate line on a substrate; forming a gate insulating layer on the gate line; forming a semiconductor layer on the gate insulating layer; forming a data line and a drain electrode on the semiconductor layer; depositing a passivation layer on the data line and the drain electrode; forming a photoresist including a first portion and a second portion thinner than the first portion on the passivation layer; etching the passivation layer using the photoresist as a mask to expose a portion of the drain electrode at least in part; removing the second portion of the photoresist; depositing a conductive film; and removing the photoresist to form a pixel electrode on the exposed portion of the drain electrode.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: March 10, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jang-Soo Kim, Soo-Jin Kim, Kyoung-Tai Han, Hee-Hwan Choe, Joo-Han Kim
  • Patent number: 7485927
    Abstract: Disclosed are a thin film transistor substrate of an LCD device and a method of manufacturing the same. The thin film transistor substrate includes a nickel-silicide layer formed on an insulating layer pattern including silicon and a metal layer formed on the nickel-silicide layer. Nickel is coated on the insulating layer pattern including silicon and a metal material is coated on the nickel-coated layer. After that, a heat treatment is performed at about 200 to about 350° C. to obtain the nickel-silicide layer. Since the thin film transistor substrate of the LCD device is manufactured by applying the nickel-silicide wiring, a device having low resistivity and good ohmic contact property can be obtained.
    Type: Grant
    Filed: February 28, 2004
    Date of Patent: February 3, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Oh Jeong, Beom-Seok Cho, Hee-Hwan Choe
  • Patent number: 7482208
    Abstract: The present invention relates to a thin film transistor array panel, a liquid crystal display, and a manufacturing method of the same. A TFT array for a LCD or an EL display is used as a circuit board for driving the respective pixels in an independent manner. The present invention provides pixel electrodes and contact assistants, which connect expansions of gate lines and data lines to an external circuit, having a structure of double layers including IZO layer and ITO layer. The ITO layer is disposed on the IZO layer. In the present invention, the pixel electrodes are formed to have double layers of IZO layer and ITO layer to avoid wires from getting damage by the ITO etchant and to prevent prove pins from having accumulation of foreign body during the gross test. In the present invention, the contact assistants may only be formed to have double layers of IZO layer and ITO layer to prevent prove pins from having accumulation of foreign body during the gross test.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: January 27, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Gab Kim, Je-Min Lee, Gwan-Young Cho, Jong-Tae Jeong, In-Ho Song, Hee-Hwan Choe, Sung-Chul Kang, Ho-Min Kang, Beohm-Rock Choi, Joon-Hoo Choi
  • Publication number: 20090017574
    Abstract: A thin film transistor includes a gate electrode on a substrate, a gate insulating layer on the substrate, a channel pattern, a source electrode and a drain electrode. The channel pattern includes a semiconductor pattern formed on the gate electrode and overlaying the gate electrode as well as first and second conductive adhesive patterns formed on the semiconductor pattern and spaced apart from each other. The source electrode includes a first barrier pattern, a source pattern and a first capping pattern sequentially formed on the first conductive adhesive pattern. The drain electrode includes a second barrier pattern, a drain pattern and a second capping pattern sequentially formed on the second conductive adhesive pattern. Etched portions of the first and second conductive adhesive patterns have a substantially vertical profile to prevent the exposure of the source and drain electrodes, thereby improving the characteristics of the thin film transistor.
    Type: Application
    Filed: June 26, 2008
    Publication date: January 15, 2009
    Inventors: Sang-Gab Kim, Shi-Yul Kim, Hong-Sick Park, Hee-Hwan Choe, Hong-Kee Chin, Min-Seok Oh
  • Patent number: 7405425
    Abstract: A thin film transistor includes a gate electrode on a substrate, a gate insulating layer on the substrate, a channel pattern, a source electrode and a drain electrode. The channel pattern includes a semiconductor pattern formed on the gate electrode and overlaying the gate electrode as well as first and second conductive adhesive patterns formed on the semiconductor pattern and spaced apart from each other. The source electrode includes a first barrier pattern, a source pattern and a first capping pattern sequentially formed on the first conductive adhesive pattern. The drain electrode includes a second barrier pattern, a drain pattern and a second capping pattern sequentially formed on the second conductive adhesive pattern. Etched portions of the first and second conductive adhesive patterns have a substantially vertical profile to prevent the exposure of the source and drain electrodes, thereby improving the characteristics of the thin film transistor.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: July 29, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Gab Kim, Shi-Yul Kim, Hong-Sick Park, Hee-Hwan Choe, Hong-Kee Chin, Min-Seok Oh
  • Publication number: 20070102770
    Abstract: A method of manufacturing a thin film transistor array panel including forming a gate line on a substrate, forming a gate insulating layer on the gate line, forming a semiconductor layer on the gate insulating layer, forming a data line and a drain electrode on the semiconductor layer, depositing a passivation layer on the data line and the drain electrode, forming a photoresist including a first portion and a second portion, which is thinner than the first portion, on the passivation layer, etching the passivation layer using the photoresist as a mask to expose a portion of the drain electrode, removing the second portion of the photoresist, depositing a conductive film, and removing the first portion of the photoresist to form a pixel electrode on the exposed portion of the drain electrode.
    Type: Application
    Filed: January 3, 2007
    Publication date: May 10, 2007
    Inventors: Woo-Geun Lee, Beom-Seok Cho, Je-Hun Lee, Chang-Oh Jeong, Sang-Gab Kim, Min-Seok Oh, Young-Wook Lee, Hee-Hwan Choe
  • Publication number: 20070065991
    Abstract: The present invention relates to a thin film transistor array panel, a liquid crystal display, and a manufacturing method of the same. A TFT array for a LCD or an EL display is used as a circuit board for driving the respective pixels in an independent manner. The present invention provides pixel electrodes and contact assistants, which connect expansions of gate lines and data lines to an external circuit, having a structure of double layers including IZO layer and ITO layer. The ITO layer is disposed on the IZO layer. In the present invention, the pixel electrodes are formed to have double layers of IZO layer and ITO layer to avoid wires from getting damage by the ITO etchant and to prevent prove pins from having accumulation of foreign body during the gross test. In the present invention, the contact assistants may only be formed to have double layers of IZO layer and ITO layer to prevent prove pins from having accumulation of foreign body during the gross test.
    Type: Application
    Filed: September 16, 2004
    Publication date: March 22, 2007
    Inventors: Sang-Gab Kim, Je-Min Lee, Gwan-Young Cho, Jong-Tae Jeong, In-Ho Song, Hee-Hwan Choe, Sung-Chul Kang, Ho-Min Kang, Beohm-Rock Choi, Joon-Hoo Choi