Patents by Inventor Joon Young Yang

Joon Young Yang 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: 8482710
    Abstract: A liquid crystal display and a fabricating method thereof are provided. The liquid crystal display includes a first substrate having a pixel portion and a pad portion; a gate line and a data line crossing each other to define the pixel portion at the pixel portion; a transistor adjacent to a crossing of the gate line and the data line, the transistor including a gate electrode, a source electrode and a drain electrode; an insulating layer above the source electrode and the drain electrode, the insulating layer exposing a lateral side of the drain electrode; a pixel electrode in contact with the lateral side of the drain electrode; a second substrate attached to the first substrate; and a liquid crystal layer between the first substrate and a second substrate.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: July 9, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Joon-Young Yang, Jung-Il Lee
  • Patent number: 8435722
    Abstract: A method for fabricating a liquid crystal display includes: forming a gate electrode on a substrate; sequentially providing an insulation layer, a semiconductor layer and an etch stopper layer on the gate electrode; patterning the etch stopper layer and the semiconductor layer to form an etch stopper layer pattern and a semiconductor layer pattern; removing both side portions of the etch stopper layer pattern to expose the lower semiconductor layer pattern portion; forming a conductive layer on an entire surface of the substrate; patterning the conductive layer to form source and drain electrodes and defining a channel region; forming a passivation layer having a contact part on the entire surface of the substrate; and forming a pixel electrode connected with the drain electrode via the contact part on the passivation layer. An etch stopper can be used without additionally performing a masking process.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: May 7, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Dong-Su Shin, Joon-Young Yang, Jung-Il Lee
  • Patent number: 8390752
    Abstract: Provided are a display device and a fabricating method thereof. The display device includes a substrate, a gate line, a common line, common electrodes, an insulating layer, a data line, a drain electrode, and pixel electrodes. The gate line is disposed in a first direction. The common line is disposed substantially parallel to the gate line. The common electrodes branch from the common line. The insulating layer covers the gate line, the common line, and the common electrodes. The channel patterns are disposed on the insulating layer to correspond to the gate electrode. The data line is disposed in a second direction. The drain electrode is electrically connected with the channel pattern. The pixel electrodes are formed of an opaque metal. Thus, the display device may improve contrast ratio.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: March 5, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Joon Young Yang, Soo Pool Kim
  • Patent number: 8362526
    Abstract: A method of fabricating a liquid crystal display device includes forming first, second, and third active patterns on a substrate having a pixel region and a driving region, wherein the first and second active patterns are in the driving region and the third active pattern is in the pixel region, the first, second, and third active patterns each having an active region, a source region, and a drain region with the source and drain regions on opposing sides of the active region, forming a gate insulator on the first, second, and third active patterns, forming first, second, and third gate electrodes on the gate insulator, wherein the first, second, and third gate electrodes correspond to the active regions of the first, second, and third active patterns, respectively, doping the source and drain regions of the first, second, and third active patterns with n? ions using the first, second, and third gate electrodes as a doping mask, doping the n? doped source and drain regions of the second active pattern with p+
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: January 29, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Joon Young Yang
  • Patent number: 8325317
    Abstract: A method of fabricating an LCD includes providing first and second substrates. A gate electrode, a gate line, a connection electrode, a common electrode and a pixel electrode are formed on the first substrate through a first making process. A first insulation film is formed on the first substrate. A first insulation film pattern having multiple contact holes are formed through a second masking process. An active pattern is formed on the first substrate and source and drain electrodes are operationally connected with the active pattern through some of the contact holes. A gate electrode, a common electrode, and a pixel electrode may be formed substantially together through a slit exposure. An active pattern and source and drain electrodes may be formed substantially together. The number of masks needed to fabricate the display may be reduced to simplify a fabrication process and protect a channel region.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: December 4, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Joon-Young Yang
  • Patent number: 8305536
    Abstract: A liquid crystal display device and a method for fabricating the same are provided. The method includes forming a gate line and a data line on a first substrate crossing each other to define a pixel region; forming a gate electrode, a source electrode and a drain electrode of a transistor on the first substrate; forming an active layer below the data line and between the gate electrode and each of the source electrode and the drain electrode, wherein the active layer below the data line has an exposed portion exposed by the data line; removing the exposed portion of the active layer below the data line; and forming a pixel electrode connected to the drain electrode.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: November 6, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Joon-Young Yang
  • Patent number: 8294862
    Abstract: A liquid crystal display device is provided. The liquid crystal display device includes a gate line and a data line formed on a substrate; a thin film transistor formed at an intersection of the gate line and the data line; a pixel electrode connected to the thin film transistor; a common electrode substantially parallel to the pixel electrode; and a conductive pattern in contact with the common electrode at a lateral side surface of the common electrode.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: October 23, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Joon Young Yang, Jung Ii Lee, Dong Su Shin
  • Patent number: 8264653
    Abstract: An in-plane switching mode LCD having a plurality of pixels arranged in a matrix includes a gate line formed on a lower substrate, a data line formed such that the data line intersect the gate line to define a pixel region, a TFT (Thin Film Transistor) formed at the intersection of the gate line and the data line, a pixel electrode connected to the TFT, a common electrode to generate a horizontal electric field with the pixel electrode, and a common line supplying common voltage to the common electrode, wherein the common line comprises a first common line formed parallel to the gate line, a second common line formed parallel to the date line in a side portion of the pixel region adjacent to the data line, and a third common line formed parallel to the gate line and disposed between a first row and a second row of the matrix.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: September 11, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Young Oh, Dong Su Shin, Jae Kyun Lee, Joon Young Yang, Kum Mi Oh
  • Patent number: 8228455
    Abstract: The present invention relates a method for forming a pattern includes the steps of forming a thin film on a substrate, coating a photoresist film on the thin film, aligning a mask over the photoresist film, the mask formed on a base material, including a light shielding portion having a linear supporting portion and an uneven portion at a boundary of the supporting portion, and a transmission portion defined at regions excluding the light shielding portion, exposing the photoresist film with the mask thereon to a UV beam of a wavelength greater than 300nm to cause refraction in the vicinity of the uneven portion, and developing the photoresist film exposed thus to form a photoresist film pattern, and patterning the thin film by using the photoresist film pattern thus formed.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: July 24, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Joon Young Yang, Jung Il Lee, Jeong Oh Kim, Yu Kyeong Ahn, Young Kwon Kang, Sang Jin Lee, Jung Ho Bang
  • Patent number: 8153462
    Abstract: A method of manufacturing a liquid crystal display device is provided which includes ashing first and second photoresist patterns, whereby a copper oxide film is formed at portions of a data line and a source-drain pattern exposed between the ashed first and second photoresist patterns and between the ashed first and second portions of the first photoresist pattern; deoxidizing or removing the copper oxide film; performing a plasma treatment to change the exposed portions of the data line and the source-drain pattern into a copper compound; removing the copper compound using a copper compound removing solution to form source and drain electrodes below the ashed first and second portions, respectively, wherein the copper compound removing solution substantially has no reaction with the copper group material; dry-etching a portion of an ohmic contact layer between the source and drain electrodes using the source and drain electrodes as an etching mask, the ohmic contact layer formed by patterning the impurity-d
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: April 10, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Kang-Il Kim, Joon-Young Yang, Kye-Chan Song, Soopool Kim, Young-Kwon Kang
  • Patent number: 8149347
    Abstract: A method of fabricating a liquid crystal display device includes forming a gate electrode; forming a gate insulator on the gate electrode, an active layer on the gate insulator, and an etch stopper on the active layer; depositing an ohmic contact layer, a first metal layer and a second metal layer on the substrate; etching the ohmic contact layer, and the first and second metal layers to form ohmic contact patterns, and first and second metal patterns including source, drain and pixel electrodes using a single photomask.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: April 3, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Joon Young Yang
  • Patent number: 8125603
    Abstract: An in-plane switching mode LCD having a plurality of pixels arranged in a matrix includes a gate line formed on a lower substrate, a data line formed such that the data line intersect the gate line to define a pixel region, a TFT (Thin Film Transistor) formed at the intersection of the gate line and the data line, a pixel electrode connected to the TFT, a common electrode to generate a horizontal electric field with the pixel electrode, and a common line supplying common voltage to the common electrode, wherein the common line comprises a first common line formed parallel to the gate line in a lower portion of the pixel region, a second common line formed parallel to the date line in a side portion of the pixel region adjacent to the data line, and a third common line formed parallel to the gate line in a upper portion of the pixel region, and wherein the data line comprises a pair of sub-lines facing directly with each other in every two pixel regions.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: February 28, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Young Oh, Dong Su Shin, Jae Kyun Lee, Joon Young Yang, Kum Mi Oh
  • Publication number: 20120008082
    Abstract: An in-plane switching mode LCD having a plurality of pixels arranged in a matrix includes a gate line formed on a lower substrate, a data line formed such that the data line intersect the gate line to define a pixel region, a TFT (Thin Film Transistor) formed at the intersection of the gate line and the data line, a pixel electrode connected to the TFT, a common electrode to generate a horizontal electric field with the pixel electrode, and a common line supplying common voltage to the common electrode, wherein the common line comprises a first common line formed parallel to the gate line, a second common line formed parallel to the date line in a side portion of the pixel region adjacent to the data line, and a third common line formed parallel to the gate line and disposed between a first row and a second row of the matrix.
    Type: Application
    Filed: September 22, 2011
    Publication date: January 12, 2012
    Inventors: Jae Young OH, Dong Su Shin, Jae Kyun Lee, Joon Young Yang, Kum Mi Oh
  • Publication number: 20110234936
    Abstract: The present disclosure relates to a horizontal electric field type liquid crystal display device having the horizontal electric fields over the pixel electrodes and the common electrodes which are disposed on the same level plane, and a method for manufacturing the same. The horizontal electric field type liquid crystal display device comprising: a substrate; a gate line and a data line crossing each other with a gate insulating layer therebetween, and defining a pixel area on the substrate; a thin film transistor formed where the gate line and the data line is crossing; a pixel electrode contacting the thin film transistor on the gate insulating layer; a common electrode disposed in parallel with the pixel electrode having a predetermined distance; and a passivation layer covering whole surface of the substrate including the pixel electrode and the common electrode.
    Type: Application
    Filed: March 23, 2011
    Publication date: September 29, 2011
    Inventors: Joon-Young YANG, Jung-Il Lee
  • Patent number: 7977171
    Abstract: A method of fabricating a thin film transistor substrate for reducing a mask process and, at the same time removing a transparent electrode ITO which remains at a non-display area by a contact hole filling process is disclosed. In the method of fabricating the thin film transistor substrate having a display area and a non-display area, a gate pattern is formed at the exterior of the display area. A gate insulating film is formed on a substrate provided with a gate pattern, and then a data pattern is formed. And a protective film is formed on an entire substrate provided with a data pattern, and then a conductive pattern, and then a conductive pattern, which is comprised of a pixel electrode which is formed at a display area, and a lower gate pad electrode and a lower data pad electrode which are formed at a non-display area, is formed.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: July 12, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Joon Young Yang, Young Kwon Kang
  • Publication number: 20110143504
    Abstract: A method of fabricating a liquid crystal display device includes forming a gate electrode; forming a gate insulator on the gate electrode, an active layer on the gate insulator, and an etch stopper on the active layer; depositing an ohmic contact layer, a first metal layer and a second metal layer on the substrate; etching the ohmic contact layer, and the first and second metal layers to form ohmic contact patterns, and first and second metal patterns including source, drain and pixel electrodes using a single photomask.
    Type: Application
    Filed: February 4, 2011
    Publication date: June 16, 2011
    Inventor: Joon Young YANG
  • Patent number: 7932979
    Abstract: A fabrication method of an LCD includes providing a substrate having a first region and a second region; forming a storage line in the first region and an active pattern in the second region of the substrate; forming a first insulation film on the substrate; forming a gate electrode and a pixel electrode on the substrate; forming a second insulation film on the substrate; and forming a source electrode and a drain electrode, the source electrode connected to a source region via a contact hole and the drain electrode connected to a drain region through the contact hole. The fabrication method may obtain a sufficient storage capacitance with a simplified process. The number of masks used for fabrication of a thin film transistor (TFT) may be reduced.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: April 26, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Joon Young Yang
  • Publication number: 20110092008
    Abstract: A method of fabricating an LCD includes providing first and second substrates. A gate electrode, a gate line, a connection electrode, a common electrode and a pixel electrode are formed on the first substrate through a first making process. A first insulation film is formed on the first substrate. A first insulation film pattern having multiple contact holes are formed through a second masking process. An active pattern is formed on the first substrate and source and drain electrodes are operationally connected with the active pattern through some of the contact holes. A gate electrode, a common electrode, and a pixel electrode may be formed substantially together through a slit exposure. An active pattern and source and drain electrodes may be formed substantially together. The number of masks needed to fabricate the display may be reduced to simplify a fabrication process and protect a channel region.
    Type: Application
    Filed: December 21, 2010
    Publication date: April 21, 2011
    Applicant: LG Display Co., Ltd.
    Inventor: Joon-Young Yang
  • Patent number: 7927931
    Abstract: A liquid crystal display device may comprise a semiconductor layer on a substrate and including a channel portion and ohmic contact portions at both sides of the channel portion, wherein an edge portion of the semiconductor layer has a side surface of a substantially tapered shape; a gate insulating layer covering the semiconductor layer; a gate electrode on the gate insulating layer and substantially corresponding to the channel portion; source and drain electrodes contacting the semiconductor layer; and a pixel electrode contacting the drain electrode.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: April 19, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Joon Young Yang, Jae Young Oh, Soopool Kim
  • Patent number: 7906781
    Abstract: A method for fabricating a liquid crystal display (LCD) device comprises forming an active pattern and a data line on a substrate, the active pattern including a source, a drain, and a channel regions; a first insulation film on a portion of the substrate; forming a gate electrode in a portion of the active pattern where the first insulation film is formed; a second insulation film on the substrate; forming a plurality of first contact holes exposing a portion of the source and drain regions and a second contact hole exposing a portion of the data line; forming a source electrode from a transparent conductive material connected to a source region within the respective first contact hole and a data line within the second contact hole; and forming a pixel and a drain electrodes from the transparent conductive material connected to a drain region within the respective first contact hole.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: March 15, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Joon-Young Yang, Yong-In Park, Sang-Hyun Kim