Patents by Inventor Byung-Kook Choi

Byung-Kook Choi 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: 10919270
    Abstract: Provided is a laminated glass, comprising: a soda lime glass; and a non-tempered alkali-free glass bonded to one surface of the soda lime glass, in which a thickness of the soda lime glass is larger than a thickness of the non-tempered alkali-free glass, and an elastic modulus of the non-tempered alkali-free glass is larger than an elastic modulus of the soda lime glass.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: February 16, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Jun Hak Oh, Jae Hyuk Yoon, Chang Hee Lee, Byung Kook Choi
  • Patent number: 10662107
    Abstract: Provided is glass with high temperature stability, a low coefficient of thermal expansion and a high mechanical strength, a light guide plate including the glass to replace the conventional PMMA and metal frame, and fabricating methods thereof. The glass according to the present disclosure is borosilicate glass containing 75˜85 wt % of SiO2, 5˜15 wt % of B2O3, 0˜5 wt % of Al2O3, R2O 1˜7 wt % where R is at least one of Li, Na and K, and <0.005 wt % of Fe2O3 and having the redox ratio 0.5 or more. This glass maintains luminance and has an excellent color difference reduction effect when used in a light guide plate.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: May 26, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Du-Sun Hwang, Hyun-Jin Shim, Chang-Hee Lee, Byung-Kook Choi, Jun-Bo Choi
  • Patent number: 10611672
    Abstract: Provided is glass with high temperature stability, a low coefficient of thermal expansion and a high mechanical strength, a light guide plate including the glass to replace the conventional PMMA and metal frame, and fabricating methods thereof. The glass according to the present disclosure is borosilicate glass containing 75˜85 wt % of SiO2, 5˜15 wt % of B2O3, 0˜5 wt % of Al2O3, R2O 1˜7 wt % where R is at least one of Li, Na and K, and <0.005 wt % of Fe2O3 and having the redox ratio 0.5 or more. This glass maintains luminance and has an excellent color difference reduction effect when used in a light guide plate.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: April 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Du-Sun Hwang, Hyun-Jin Shim, Chang-Hee Lee, Byung-Kook Choi, Jun-Bo Choi
  • Patent number: 10488586
    Abstract: A glass light-guide plate having a small color difference and a manufacturing method thereof are provided. The light-guide plate includes glass containing 70 to 85 wt % of SiO2, 5 to 20 wt % of B2O3, 0 to 5 wt % of Al2O3, 1 to 7 wt % of R2O (here, R is at least one of Li, Na, and K), 0 to 0.005 wt % of Fe2O3, and less than 0.002 wt % of a transition metal oxide for adjusting a color difference.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: November 26, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Hyun-Jin Shim, Chang-Hee Lee, Byung-Kook Choi, Jun-Bo Choi, Du-Sun Hwang
  • Publication number: 20190134953
    Abstract: Provided is a laminated glass, comprising: a soda lime glass; and a non-tempered alkali-free glass bonded to one surface of the soda lime glass, in which a thickness of the soda lime glass is larger than a thickness of the non-tempered alkali-free glass, and an elastic modulus of the non-tempered alkali-free glass is larger than an elastic modulus of the soda lime glass.
    Type: Application
    Filed: April 25, 2017
    Publication date: May 9, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Jun Hak OH, Jae Hyuk YOON, Chang Hee LEE, Byung Kook CHOI
  • Patent number: 10207950
    Abstract: A glass light-guiding plate which has high-temperature stability and is advantageous in being manufactured in a slim profile is provided. The glass light-guiding plate includes a glass plate including 75 to 85 wt % SiO2, 5 to 20 wt % B2O3, 1 to 5 wt % Al2O3, 3 to 8 wt % R2O (here, R is at least one of Li, Na, and K), and Fe2O3<0.0025 wt %.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: February 19, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Chang-Hee Lee, Hyun-Jin Shim, Byung-Kook Choi, Jun-Bo Choi
  • Publication number: 20180364415
    Abstract: A glass light-guide plate having a small color difference and a manufacturing method thereof are provided. The light-guide plate includes glass containing 70 to 85 wt % of SiO2, 5 to 20 wt % of B2O3, 0 to 5 wt % of Al2O3, 1 to 7 wt % of R2O (here, R is at least one of Li, Na, and K), 0 to 0.005 wt % of Fe2O3, and less than 0.002 wt % of a transition metal oxide for adjusting a color difference.
    Type: Application
    Filed: March 20, 2017
    Publication date: December 20, 2018
    Inventors: Hyun-Jin SHIM, Chang-Hee LEE, Byung-Kook CHOI, Jun-Bo CHOI, Du-Sun HWANG
  • Publication number: 20180265399
    Abstract: Provided is glass with high temperature stability, a low coefficient of thermal expansion and a high mechanical strength, a light guide plate including the glass to replace the conventional PMMA and metal frame, and fabricating methods thereof. The glass according to the present disclosure is borosilicate glass containing 75˜85 wt % of SiO2, 5˜15 wt % of B2O3, 0˜5 wt % of Al2O3, R2O 1˜7 wt % where R is at least one of Li, Na and K, and <0.005 wt % of Fe2O3 and having the redox ratio 0.5 or more. This glass maintains luminance and has an excellent color difference reduction effect when used in a light guide plate.
    Type: Application
    Filed: April 18, 2017
    Publication date: September 20, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Du-Sun HWANG, Hyun-Jin SHIM, Chang-Hee LEE, Byung-Kook CHOI, Jun-Bo CHOI
  • Publication number: 20180208500
    Abstract: A glass light-guiding plate which has high-temperature stability and is advantageous in being manufactured in a slim profile is provided. The glass light-guiding plate includes a glass plate including 75 to 85 wt % SiO2, 5 to 20 wt % B2O3, 1 to 5 wt % Al2O3, 3 to 8 wt % R2O (here, R is at least one of Li, Na, and K), and Fe2O3<0.0025 wt %.
    Type: Application
    Filed: September 26, 2016
    Publication date: July 26, 2018
    Inventors: Chang-Hee LEE, Hyun-Jin SHIM, Byung-Kook CHOI, Jun-Bo CHOI
  • Patent number: 8735883
    Abstract: A method for fabricating an oxide thin film transistor includes sequentially forming a gate insulating film, an oxide semiconductor layer, and a first insulating layer; selectively patterning the oxide semiconductor layer and the first insulating layer to form an active layer and an insulating layer pattern on the gate electrode; forming a second insulating layer on the substrate having the active layer and the insulating layer pattern formed thereon; and selectively patterning the insulating layer pattern and the second insulating layer to form first and second etch stoppers on the active layer. The oxide semiconductor layer may be a ternary system or quaternary system oxide semiconductor comprising a combination of AxByCzO (A, B, C=Zn, Cd, Ga, In, Sn, Hf, Zr; x, y, z?0).
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: May 27, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Dae-Hwan Kim, Byung-Kook Choi, Sul Lee, Hoon Yim
  • Patent number: 8687158
    Abstract: An array substrate for an in-plane switching mode liquid crystal display device includes: a gate line on a substrate; a data line crossing the gate line to define a pixel region on the substrate; a common line parallel to and spaced apart from the gate line; a gate electrode connected to the gate line; a semiconductor layer disposed over the gate electrode, wherein an area of the semiconductor layer is less than an area of the gate electrode; a source electrode connected to the data line, and a drain electrode spaced apart from the source electrode, the source and drain electrodes disposed on the semiconductor layer; a plurality of pixel electrodes integrated with the drain electrode and extending from the drain electrode in the pixel region; and a plurality of common electrodes connected to the common line and alternately arranged with the plurality of pixel electrodes, wherein each of the source electrode, the drain electrode, the data line and the plurality of pixel electrodes are comprised from a first co
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: April 1, 2014
    Assignee: LG Display Co. Ltd.
    Inventors: Byung-Kook Choi, Hyo-Uk Kim, Chang-Bin Lee
  • Patent number: 8243222
    Abstract: A method of manufacturing an array substrate for a liquid crystal display device includes forming a gate electrode and a gate line on a substrate through a first mask process, forming a first insulating layer, an active layer, an ohmic contact layer, a buffer metallic layer, and a data line on the substrate including the gate electrode and the gate line through a second mask process, and forming a source electrode, a drain electrode, and a pixel electrode through a third mask process, the pixel electrode extending from the drain electrode, wherein the active layer is disposed over and within the gate electrode.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: August 14, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Chang-Bin Lee, Byung-Kook Choi
  • Publication number: 20120146017
    Abstract: A method for fabricating an oxide thin film transistor includes sequentially forming a gate insulating film, an oxide semiconductor layer, and a first insulating layer; selectively patterning the oxide semiconductor layer and the first insulating layer to form an active layer and an insulating layer pattern on the gate electrode; forming a second insulating layer on the substrate having the active layer and the insulating layer pattern formed thereon; and selectively patterning the insulating layer pattern and the second insulating layer to form first and second etch stoppers on the active layer. The oxide semiconductor layer may be a ternary system or quaternary system oxide semiconductor comprising a combination of AxByCzO (A, B, C?Zn, Cd, Ga, In, Sn, Hf, Zr; x, y, z?0).
    Type: Application
    Filed: December 13, 2011
    Publication date: June 14, 2012
    Inventors: Dae-Hwan KIM, Byung-Kook Choi, Sul Lee, Hoon Yim
  • Patent number: 8198111
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a gate line on the substrate, a data line crossing the gate line to define a pixel region, a thin film transistor connected to the gate line and the data line and including a gate electrode, an active layer, an ohmic contact layer, a buffer metallic layer, a source electrode and a drain electrode, and a pixel electrode in the pixel region and connected to the thin film transistor, wherein the data line includes a transparent conductive layer and an opaque conductive layer, and each of the source and drain electrodes and the pixel electrode includes a transparent conductive layer.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: June 12, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hyo-Uk Kim, Chang-Bin Lee, Byung-Kook Choi, Dong-Young Kim
  • Publication number: 20100273284
    Abstract: A method of manufacturing an array substrate for a liquid crystal display device includes forming a gate electrode and a gate line on a substrate through a first mask process, forming a first insulating layer, an active layer, an ohmic contact layer, a buffer metallic layer, and a data line on the substrate including the gate electrode and the gate line through a second mask process, and forming a source electrode, a drain electrode, and a pixel electrode through a third mask process, the pixel electrode extending from the drain electrode, wherein the active layer is disposed over and within the gate electrode.
    Type: Application
    Filed: July 7, 2010
    Publication date: October 28, 2010
    Inventors: Chang-Bin LEE, Byung-Kook Choi
  • Patent number: 7768587
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a gate line on the substrate, a data line crossing the gate line to define a pixel region, a thin film transistor including a gate electrode, an active layer, an ohmic contact layer, a buffer metallic layer, a source electrode and a drain electrode, the thin film transistor being electrically connected to the gate line and the data line and a pixel electrode in the pixel region and connected to the thin film transistor, wherein the active layer is disposed over and within the gate electrode.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: August 3, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Chang-Bin Lee, Byung-Kook Choi
  • Publication number: 20090186438
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a gate line on the substrate, a data line crossing the gate line to define a pixel region, a thin film transistor connected to the gate line and the data line and including a gate electrode, an active layer, an ohmic contact layer, a buffer metallic layer, a source electrode and a drain electrode, and a pixel electrode in the pixel region and connected to the thin film transistor, wherein the data line includes a transparent conductive layer and an opaque conductive layer, and each of the source and drain electrodes and the pixel electrode includes a transparent conductive layer.
    Type: Application
    Filed: March 25, 2009
    Publication date: July 23, 2009
    Applicant: LG Display Co., Ltd.
    Inventors: Hyo-Uk KIM, Chang-Bin LEE, Byung-Kook CHOI, Dong-Yong KIM
  • Patent number: 7528409
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a gate line on the substrate, a data line crossing the gate line to define a pixel region, a thin film transistor connected to the gate line and the data line and including a gate electrode, an active layer, an ohmic contact layer, a buffer metallic layer, a source electrode and a drain electrode, and a pixel electrode in the pixel region and connected to the thin film transistor, wherein the data line includes a transparent conductive layer and an opaque conductive layer, and each of the source and drain electrodes and the pixel electrode includes a transparent conductive layer.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: May 5, 2009
    Assignee: LG. Display Co., Ltd.
    Inventors: Hyo-Uk Kim, Chang-Bin Lee, Byung-Kook Choi, Dong-Young Kim
  • Publication number: 20080013026
    Abstract: An array substrate for an in-plane switching mode liquid crystal display device includes: a gate line on a substrate; a data line crossing the gate line to define a pixel region on the substrate; a common line parallel to and spaced apart from the gate line; a gate electrode connected to the gate line; a semiconductor layer disposed over the gate electrode, wherein an area of the semiconductor layer is less than an area of the gate electrode; a source electrode connected to the data line, and a drain electrode spaced apart from the source electrode, the source and drain electrodes disposed on the semiconductor layer; a plurality of pixel electrodes integrated with the drain electrode and extending from the drain electrode in the pixel region; and a plurality of common electrodes connected to the common line and alternately arranged with the plurality of pixel electrodes, wherein each of the source electrode, the drain electrode, the data line and the plurality of pixel electrodes are comprised from a first co
    Type: Application
    Filed: June 14, 2007
    Publication date: January 17, 2008
    Inventors: Byung-Kook Choi, Hyo-Uk Kim, Chang-Bin Lee
  • Publication number: 20080002082
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a gate line on the substrate, a data line crossing the gate line to define a pixel region, a thin film transistor including a gate electrode, an active layer, an ohmic contact layer, a buffer metallic layer, a source electrode and a drain electrode, the thin film transistor being electrically connected to the gate line and the data line and a pixel electrode in the pixel region and connected to the thin film transistor, wherein the active layer is disposed over and within the gate electrode.
    Type: Application
    Filed: December 14, 2006
    Publication date: January 3, 2008
    Inventors: Chang-Bin Lee, Byung-Kook Choi