Patents by Inventor Hee-Young Kwack

Hee-Young Kwack 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).

  • Publication number: 20090023254
    Abstract: A method of forming an inorganic insulating layer on a substrate comprises supplying a mixed gas between the substrate and a target, and generating a plasma between the substrate and the target. The target comprises a silicon-based material. The method further comprises depositing a plurality of ions from the plasma on the substrate.
    Type: Application
    Filed: December 31, 2007
    Publication date: January 22, 2009
    Inventors: Joo-Soo Lim, Hong-Sik Kim, Hee-Young Kwack, Hyun-Seok Hong, Byung-Chul Ahn, Byoung-Ho Lim
  • Publication number: 20090021687
    Abstract: A method of lifting off includes forming a first material layer on a substrate; forming a photoresist pattern including first and second holes and on the first material layer; patterning the first material layer using the photoresist pattern as a patterning mask to form a material pattern having first and second grooves within the material pattern, the first and second grooves corresponding to the first and second holes, respectively; forming a second material layer on an entire surface of the substrate including the photoresist pattern and the first and second grooves; and removing the photoresist pattern and the second material layer on the photoresist pattern at the same time, wherein a portion of the material pattern between the first and second grooves and portions of the material pattern at sides of the first and second grooves constitute a line as a whole.
    Type: Application
    Filed: July 18, 2008
    Publication date: January 22, 2009
    Inventors: Hee-Young Kwack, Hyun-Seok Hong, Joo-Soo Lim, Hong-Sik Kim
  • Patent number: 7439586
    Abstract: A base thin film transistor (TFT) substrate includes a substrate, array areas on the substrate; at least one dummy area on the substrate and between the array areas; an insulating film on the substrate; at least one aperture through the insulating film and arranged within the at least one dummy area; and at least one post arranged within the at least one aperture.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: October 21, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Tae Young Jung, Ji No Lee, Hee Young Kwack
  • Patent number: 7425508
    Abstract: A liquid crystal display device, including: a gate line on a substrate; a data line crossing the gate line with a gate insulating film therebetween to define a pixel area; a thin film transistor connected to the gate line and the data line; a semiconductor pattern which forms a channel of the thin film transistor and overlaps along the data line; a passivation film covering the data line and the thin film transistor; and a pixel electrode on the gate insulating film in a pixel hole of the pixel area that penetrates the passivation film and connected to the thin film transistor, the pixel electrode on an inclined side surface of the passivation film to encompass the pixel hole, to form a border with the passivation film and having a thickness that decreases as it goes up the side surface of the passivation film.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: September 16, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Byung Chul Ahn, Joo Soo Lim, Ji No Lee, Hee Young Kwack
  • Patent number: 7408597
    Abstract: A liquid crystal display device according to the present invention includes a gate line on a substrate; a data line crossing the gate line with a gate insulating film to define a pixel area; a thin film transistor connected to the gate line and the data line; a semiconductor pattern overlapped along the data line; a double layer passivation film covering the data line and the thin film transistor, wherein layers of the passivation film have different etching rates; and a pixel electrode formed in a pixel hole penetrating an upper passivation film of the double layer passivation film and connected to a drain electrode of the thin film transistor exposed through a drain contact hole, the pixel electrode forming a border with the upper passivation film surrounding the pixel hole.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: August 5, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Ji No Lee, Hee Young Kwack, Chang Bin Lee
  • Publication number: 20080174709
    Abstract: A method for fabricating a liquid crystal display includes: providing an array substrate and a color filter substrate facing the array substrate; forming a gate electrode and a gate line formed of a first conductive film on the array substrate through a first masking process; forming a second conductive film pattern at an upper portion of the gate electrode, a storage capacitor preliminary pattern at a partial upper region of the gate electrode and a data line substantially crossing the gate line to define a pixel region, the second conductive film pattern, the storage capacitor preliminary pattern and the data line being formed of a second conductive film through a second masking process; forming an opaque insulation film surrounding the data line; forming a transparent third conductive film on the entire surface of the array substrate with the opaque insulation film interposed therebetween; patterning the second conductive film pattern and a third conductive film through a third masking process to form a so
    Type: Application
    Filed: December 28, 2007
    Publication date: July 24, 2008
    Applicant: LG.Philips LCD Co., Ltd.
    Inventors: Joo-Soo Lim, Hee-Young Kwack
  • Publication number: 20080122767
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a gate line on the substrate, a thin film transistor including a gate electrode of the gate line, a gate insulating layer over the gate electrode, an active layer on the gate insulating layer and ohmic contact layers on the active layer, and source and drain electrodes over the ohmic contact layers, a pixel electrode electrically connected to the drain electrode, a data line electrically connected to the source electrode and crossing the gate line, a common electrode spaced apart from the pixel electrode, and a passivation layer directly between the pixel electrode and the common electrode and directly between the source and drain electrodes.
    Type: Application
    Filed: May 30, 2007
    Publication date: May 29, 2008
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Joo-Soo Lim, Hyo-Uk Kim, Hee-Young Kwack, Hyun-Seok Hong, Byung-Chul Ahn, Byoung-Ho Lim
  • Patent number: 7312843
    Abstract: A liquid crystal display device includes a first substrate, a second substrate and a liquid crystal layer between the first and second substrates. The liquid crystal display device further includes a gate line on the first substrate, a first insulation film on the gate line, a data line crossing the gate line such that the data line and the gate line define a pixel region with a transmission area and a reflection area, a thin film transistor connected to the gate line and the data line, a storage capacitor including a storage line crossing the data line and an upper storage electrode connected to the thin film transistor, a second insulation film on the thin film transistor with a transmission hole defined through the second insulation film, a reflection electrode disposed on the second insulation film in the reflection area and connected to a portion of the upper storage electrode through the transmission hole, and a pixel electrode disposed in the pixel region and connected to the reflection electrode.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: December 25, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Tae Yong Jung, Ji No Lee, Hee Young Kwack
  • Publication number: 20070152220
    Abstract: A four-mask process thin film transistor (TFT) array substrate and a method for fabricating the same is disclosed, which prevents a semiconductor tail from being formed. An open area is thus obtained and wavy noise is prevented from occurring.
    Type: Application
    Filed: December 22, 2006
    Publication date: July 5, 2007
    Inventor: Hee Young Kwack
  • Publication number: 20070141481
    Abstract: A photo-mask used for fabricating a photoresist pattern in process of fabricating an array substrate for a liquid crystal display device comprises a transmissive area having a first transmittance; a blocking area having a second transmittance; a first half-transmissive area including at least one coating layer and having a third transmittance; a second half-transmissive area including a plurality of bars and having a fourth transmittance, the bars having spaces therebetween, wherein the third and fourth transmittances are less than the first transmittance and greater than the second transmittance, respectively, and the third transmittance is greater than the fourth transmittance.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 21, 2007
    Inventor: Hee-Young Kwack
  • Patent number: 7105367
    Abstract: A method of manufacturing an array substrate for a liquid crystal display device includes forming a first line on a substrate; the first line having one or more first holes; forming a first insulating layer on the first line; forming a second line on the first insulating layer, the second line crossing the first line; forming a second insulating layer on the second line, the second insulating layer including one or more second holes; and forming a conductive pattern in each of the second holes, wherein the first holes are formed at a crossing portion of the first and the second lines, and the second holes at the crossing portion are disposed in the first holes.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: September 12, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jae-Jun Ahn, Hee-Young Kwack
  • Publication number: 20050142679
    Abstract: A method of manufacturing an array substrate for a liquid crystal display device includes forming a first line on a substrate; the first line having one or more first holes; forming a first insulating layer on the first line; forming a second line on the first insulating layer, the second line crossing the first line; forming a second insulating layer on the second line, the second insulating layer including one or more second holes; and forming a conductive pattern in each of the second holes, wherein the first holes are formed at a crossing portion of the first and the second lines, and the second holes at the crossing portion are disposed in the first holes.
    Type: Application
    Filed: October 15, 2004
    Publication date: June 30, 2005
    Inventors: Jae-Jun Ahn, Hee-Young Kwack