Patents by Inventor Jong-Hwae Lee

Jong-Hwae Lee 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: 8399182
    Abstract: A method of fabricating a transflective type liquid crystal display device includes: forming gate and data lines with a gate insulating layer therebetween on a substrate and crossing each other to define a pixel region that includes a switching region, a reflective region, and a transmissive region; forming a thin film transistor corresponding to the switching region and connected to the gate and data lines; forming a first passivation layer on the thin film transistor; forming a reflective plate on the first passivation layer in the reflective region; forming a second passivation layer on the reflective plate; forming a pixel electrode on the second passivation layer and connected to a drain electrode of the thin film transistor; forming a third passivation layer on the pixel electrode.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: March 19, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Jae-Hyung Lim, Dong-Guk Kim, Jong-Hwae Lee
  • Patent number: 8368855
    Abstract: An LCD device adapted to implement a higher aperture ratio and to reduce its power consumption is disclosed. The LCD device includes: gate lines and data lines crossing each other to define pixel regions; a thin film transistor formed in each intersecting region of the gate lines and the data lines; a reflection electrode of plane shape, electrically connected to a drain electrode of the thin film transistor; a pixel electrode disposed in each of the pixel regions; and a common electrode having a slit structure, over the pixel electrode and the reflection electrode.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: February 5, 2013
    Assignee: LG Display Co. Ltd.
    Inventors: Ku Hyun Park, Jong Hwae Lee
  • Patent number: 8344973
    Abstract: An electrostatic preventing device for light emitting diodes (LED), operative to backlight a liquid crystal display (LCD) device is disclosed. The device includes RGB assemblies installed on a flexible circuit board, and an electrostatic preventing circuit separately installed on the flexible circuit board. The device is adapted to protect RGB LED chips inside each RGB package for backlight, mounted in the RGB assemblies, from static electricity.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: January 1, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Jong-Hwae Lee
  • Patent number: 8189146
    Abstract: A transflective liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a pixel electrode. The first substrate has a thin film transistor and the second substrate has a color filter and faces the first substrate. The liquid crystal layer is disposed between the first and the second substrates. The pixel electrode is disposed above the first substrate and electrically connected to the thin film transistor. The transflective liquid crystal display device further includes a pixel region. The pixel region is divided into a transmit part and a reflective part, and the reflective part includes a first region and a second region. The pixel electrode extends to the transmit part and only the second region of the reflective part.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: May 29, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Ku Hyun Park, Jong Hwae Lee, Hyun Ho Kim
  • Publication number: 20110187972
    Abstract: A transflective liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a pixel electrode. The first substrate has a thin film transistor and the second substrate has a color filter and faces the first substrate. The liquid crystal layer is disposed between the first and the second substrates. The pixel electrode is disposed above the first substrate and electrically connected to the thin film transistor. The transflective liquid crystal display device further includes a pixel region. The pixel region is divided into a transmit part and a reflective part, and the reflective part includes a first region and a second region. The pixel electrode extends to the transmit part and only the second region of the reflective part.
    Type: Application
    Filed: March 9, 2011
    Publication date: August 4, 2011
    Inventors: Ku Hyun Park, Jong Hwae Lee, Hyun Ho Kim
  • Publication number: 20110143285
    Abstract: A method of fabricating a transflective type liquid crystal display device includes: forming gate and data lines with a gate insulating layer therebetween on a substrate and crossing each other to define a pixel region that includes a switching region, a reflective region, and a transmissive region; forming a thin film transistor corresponding to the switching region and connected to the gate and data lines; forming a first passivation layer on the thin film transistor; forming a reflective plate on the first passivation layer in the reflective region; forming a second passivation layer on the reflective plate; forming a pixel electrode on the second passivation layer and connected to a drain electrode of the thin film transistor; forming a third passivation layer on the pixel electrode.
    Type: Application
    Filed: November 8, 2010
    Publication date: June 16, 2011
    Inventors: Jae-Hyung LIM, Dong-Guk KIM, Jong-Hwae LEE
  • Patent number: 7920234
    Abstract: A transflective liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a pixel electrode. The first substrate has a thin film transistor and the second substrate has a color filter and faces the first substrate. The liquid crystal layer is disposed between the first and the second substrates. The pixel electrode is disposed above the first substrate and electrically connected to the thin film transistor. The transflective liquid crystal display device further includes a pixel region. The pixel region is divided into a transmit part and a reflective part, and the reflective part includes a first region and a second region. The pixel electrode extends to the transmit part and only the second region of the reflective part.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: April 5, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Ku Hyun Park, Jong Hwae Lee, Hyun Ho Kim
  • Patent number: 7893915
    Abstract: A liquid crystal display device includes a compensation data generating part for converting a source data signal into at least one of a conversion data signal and a compensation data signal; and a backlight unit, including a plurality of light sources, for performing a single irradiation of one of the plurality of light sources to display the conversion data signal and performing a simultaneous irradiation of at least two of the plurality of light sources to display the compensation data signal.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: February 22, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Jong-Hoon Woo, Ki-Bok Park, Jong-Hwae Lee
  • Patent number: 7859626
    Abstract: A liquid crystal display includes: first and second substrates with a transmissive region and a reflective region defined thereon; a reflection layer formed at the reflective region of the first substrate; a liquid crystal layer formed between the first and second substrates; a common electrode formed on the second substrate; an alignment layer formed on the second substrate and rubbed in one direction; a pixel electrode formed on the first substrate to form an electric field together with the common electrode to drive the liquid crystal layer, and having at least one electric field controller to control the direction of the electric field; and a vertical alignment layer formed on the first substrate.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: December 28, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Ku-Hyun Park, Jong-Hwae Lee
  • Patent number: 7812904
    Abstract: A trans-reflective type In-Plane Switching (IPS)-LCD device capable of implementing a single gap and a wide viewing angle, and minimizing an occurrence area of disclination at an interface between a transmission region and a reflection region, and a method for designing the same. First and second alignment layers have characteristics to allow LC in a transmission region can be aligned in the same direction as a transmission axis of a lower polarizer. A third alignment layer is aligned so that the LC in the reflection region can be twisted from a lower side to an upper side with a predetermined twisted angle (?). Here, the twisted angle (?) of the LC in the reflection region, and an angle (?) between an alignment direction of an uppermost LC in the reflection region and the transmission axis of the upper polarizer are set so that optical reflectivity in the reflection region is ‘0’ when the LC is not driven.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: October 12, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Ku-Hyun Park, Ki-Bok Park, Jong-Hwae Lee
  • Patent number: 7796204
    Abstract: An array substrate device includes a gate line formed on a substrate extending along a first direction having a gate electrode, a data line formed on the substrate extending along a second direction having a data pad disposed apart from a first end of the data line, the data and gate lines defining a pixel region, a gate pad formed on the substrate disposed apart from a first end of the gate line, a thin film transistor formed at a crossing region of the gate and data lines and including the gate electrode, a semiconductor layer, a source electrode, and a drain electrode, a black matrix overlapping the thin film transistor, the gate line, and the data line except for a first portion of the drain electrode, a first pixel electrode at the pixel region contacting the first portion of the drain electrode and the substrate, a color filter on the first pixel electrode at the pixel region, and a second pixel electrode on the color filter contacting the first pixel electrode.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: September 14, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Youn-Gyoung Chang, Seung-Ryull Park, Woong-Kwon Kim, Jong-Hwae Lee
  • Patent number: 7791693
    Abstract: A semi-transmission LCD device capable of enhancing a reflection efficiency by introducing external light to a reflection portion on an array substrate of a thin film transistor forming an overcoating layer having concave portions on a color filter substrate, and capable of enhancing a transmission efficiency of light incident from a backlight, and a fabricating method thereof. The semi-transmission LCD device comprises: a first substrate; a second substrate; black matrixes formed on the second substrate with a predetermined gap therebetween; a color filter formed between the black matrixes; a common electrode formed on the color filter; an overcoat layer, having concave portions, formed on the common electrode; and an LC layer formed between the first substrate and the second substrate.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: September 7, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Jong-Hwae Lee, Sang-Ho Choi
  • Patent number: 7791691
    Abstract: The present invention provides a reflective type liquid crystal display device and fabricating method thereof, by which resolution is enhanced in a manner of representing two colors from one sub-pixel. The present invention includes a first substrate having a plurality of thin film transistors and a plurality of pixel electrodes within a plurality of sub-pixels defined by a plurality of gate and data lines perpendicularly crossing with each other, respectively, a second substrate assembled to the first substrate to confront, a liquid crystal layer between the first and second substrates, a third substrate assembled to the first substrate to confront, a plurality of reflective electrodes on an inside of the third substrate to correspond to a plurality of the sub-pixels, respectively, and a color filter layer having a plurality of electrophoretic bodies on a plurality of the reflective electrodes wherein each of the electrophoretic bodies is micro-encapsulated with ionic pigment particles.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: September 7, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Hwae Lee, Jae Hong Hur
  • Publication number: 20100003883
    Abstract: The present invention provides a reflective type liquid crystal display device and fabricating method thereof, by which resolution is enhanced in a manner of representing two colors from one sub-pixel. The present invention includes a first substrate having a plurality of thin film transistors and a plurality of pixel electrodes within a plurality of sub-pixels defined by a plurality of gate and data lines perpendicularly crossing with each other, respectively, a second substrate assembled to the first substrate to confront, a liquid crystal layer between the first and second substrates, a third substrate assembled to the first substrate to confront, a plurality of reflective electrodes on an inside of the third substrate to correspond to a plurality of the sub-pixels, respectively, and a color filter layer having a plurality of electrophoretic bodies on a plurality of the reflective electrodes wherein each of the electrophoretic bodies is micro-encapsulated with ionic pigment particles.
    Type: Application
    Filed: May 20, 2009
    Publication date: January 7, 2010
    Applicant: LG Display Co., Ltd.
    Inventors: Jong Hwae Lee, Jae Hong Hur
  • Patent number: 7567310
    Abstract: An array substrate device includes a gate line formed on a substrate extending along a first direction having a gate electrode, a data line formed on the substrate extending along a second direction having a data pad disposed apart from a first end of the data line, the data and gate lines defining a pixel region, a gate pad formed on the substrate disposed apart from a first end of the gate line, a thin film transistor formed at a crossing region of the gate and data lines and including the gate electrode, a semiconductor layer, a source electrode, and a drain electrode, a black matrix overlapping the thin film transistor, the gate line, and the data line except for a first portion of the drain electrode, a first pixel electrode at the pixel region contacting the first portion of the drain electrode and the substrate, a color filter on the first pixel electrode at the pixel region, and a second pixel electrode on the color filter contacting the first pixel electrode.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: July 28, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Youn-Gyoung Chang, Seung-Ryull Park, Woong-Kwon Kim, Jong-Hwae Lee
  • Patent number: 7554630
    Abstract: An LCD device with improved an aperture ratio and decreased parasitic capacitance has a passivation layer of an inorganic material and which includes a gate line on a first substrate; a gate insulating layer on an entire surface of the first substrate including the gate line; a data line on the gate insulating layer in perpendicular to the gate line, to define a pixel region; a thin film transistor at a crossing portion of the gate and data lines; a passivation layer on the entire surface of the first substrate including the thin film transistor; a pixel electrode on the passivation layer, for being connected with a drain electrode of the thin film transistor; and a light-shielding metal for receiving a voltage, formed between the data line and the pixel electrode, to prevent a parasitic capacitance between the data line and the pixel electrode.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: June 30, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Keuk Sang Kwon, Dae Lim Park, Seong Soo Hwang, Sung Gu Kang, Jong Hwae Lee, Bung Goo Kim, Jong A Choi
  • Patent number: 7548291
    Abstract: The present invention provides a reflective type liquid crystal display device and fabricating method thereof, by which resolution is enhanced in a manner of representing two colors from one sub-pixel. The present invention includes a first substrate having a plurality of thin film transistors and a plurality of pixel electrodes within a plurality of sub-pixels defined by a plurality of gate and data lines perpendicularly crossing with each other, respectively, a second substrate assembled to the first substrate to confront, a liquid crystal layer between the first and second substrates, a third substrate assembled to the first substrate to confront, a plurality of reflective electrodes on an inside of the third substrate to correspond to a plurality of the sub-pixels, respectively, and a color filter layer having a plurality of electrophoretic bodies on a plurality of the reflective electrodes wherein each of the electrophoretic bodies is micro-encapsulated with ionic pigment particles.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: June 16, 2009
    Assignee: LG Display LCD Co., Ltd.
    Inventors: Jong Hwae Lee, Jae Hong Hur
  • Publication number: 20090096964
    Abstract: A trans-reflective type In-Plane Switching (IPS)-LCD device capable of implementing a single gap and a wide viewing angle, and minimizing an occurrence area of disclination at an interface between a transmission region and a reflection region, and a method for designing the same. First and second alignment layers have characteristics to allow LC in a transmission region can be aligned in the same direction as a transmission axis of a lower polarizer. A third alignment layer is aligned so that the LC in the reflection region can be twisted from a lower side to an upper side with a predetermined twisted angle (?). Here, the twisted angle (?) of the LC in the reflection region, and an angle (?) between an alignment direction of an uppermost LC in the reflection region and the transmission axis of the upper polarizer are set so that optical reflectivity in the reflection region is ‘0’ when the LC is not driven.
    Type: Application
    Filed: October 9, 2008
    Publication date: April 16, 2009
    Inventors: Ku-Hyun Park, Ki-Bok Park, Jong-Hwae Lee
  • Publication number: 20090096968
    Abstract: A liquid crystal display includes: first and second substrates with a transmissive region and a reflective region defined thereon; a reflection layer formed at the reflective region of the first substrate; a liquid crystal layer formed between the first and second substrates; a common electrode formed on the second substrate; an alignment layer formed on the second substrate and rubbed in one direction; a pixel electrode formed on the first substrate to form an electric field together with the common electrode to drive the liquid crystal layer, and having at least one electric field controller to control the direction of the electric field; and a vertical alignment layer formed on the first substrate.
    Type: Application
    Filed: October 9, 2008
    Publication date: April 16, 2009
    Inventors: Ku-Hyun Park, Jong-Hwae Lee
  • Publication number: 20090091675
    Abstract: An LCD device adapted to implement a higher aperture ratio and to reduce its power consumption is disclosed. The LCD device includes: gate lines and data lines crossing each other to define pixel regions; a thin film transistor formed in each intersecting region of the gate lines and the data lines; a reflection electrode of plane shape, electrically connected to a drain electrode of the thin film transistor; a pixel electrode disposed in each of the pixel regions; and a common electrode having a slit structure, over the pixel electrode and the reflection electrode.
    Type: Application
    Filed: October 8, 2008
    Publication date: April 9, 2009
    Inventors: Ku Hyun Park, Jong Hwae Lee