Patents by Inventor Baek-Kyun Jeon

Baek-Kyun Jeon 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: 9666154
    Abstract: A liquid crystal display includes: a signal controller configured to receive an input image signal corresponding to a gray from the outside, and an image signal corrector configured to correct the input image signal. The image signal corrector is configured to shift a first input image signal value corresponding to a black gray by a first value based on a common voltage, is configured to shift a second input image signal value corresponding to a halftone gray by a second value based on the common voltage, and is configured to shift a third input image signal value corresponding to a white gray by a third value based on the common voltage. The first value and the second value are larger than a kickback voltage of each of the black gray and the halftone gray, and the third value is the same as a kickback voltage of the white gray.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: May 30, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin-Soo Jung, Hwa Sung Woo, Jun Woo Lee, Baek Kyun Jeon
  • Publication number: 20170148367
    Abstract: A display apparatus includes a display panel, a timing controller and a data driver. The display panel includes a plurality of sub-pixels to display an image. The timing controller generates a data signal and compensation data based on an optimum common voltage of odd-numbered line sub-pixels and an optimum common voltage of even-numbered line sub-pixels. The data driver converts the data signal into a data voltage and to output the data voltage to the display panel.
    Type: Application
    Filed: May 13, 2016
    Publication date: May 25, 2017
    Inventors: KYUNG-HO PARK, SU-JI PARK, BAEK-KYUN JEON
  • Publication number: 20170148411
    Abstract: Among data voltages applied to a plurality of pixels on a display panel, a first data voltage is shifted from a first original data voltage by a first value, a second data voltage is shifted from a second original data voltage by a second value, and a third data voltage is shifted from a third original data voltage by a third value to compensate for AC and DC afterimages. A common voltage generator provides an optimal common voltage for the third data voltage when the temperature of the liquid crystal panel assembly is lower than a reference temperature and provides an optimal common voltage for the first data voltage or the second data voltage when the temperature of the liquid crystal panel assembly is higher than or equal to the reference temperature. The first, second, and third values correspond to respective kickback voltages of the respective gray level data voltages.
    Type: Application
    Filed: January 10, 2017
    Publication date: May 25, 2017
    Inventors: Jin-Soo JUNG, Suk Hoon KANG, Jong Hwan JEON, In Ok KIM, Jun Woo LEE, Baek Kyun JEON
  • Patent number: 9658482
    Abstract: A liquid crystal display includes a plurality of red pixel areas, a plurality of green pixel areas, a plurality of blue pixel areas, and a light blocking member which defines the plurality of red pixel areas, the plurality of green pixel areas, and the plurality of blue pixel areas therein, and includes an expansion portion which overlaps a spacer which maintains a cell gap and is provided between the plurality of green pixel areas and the plurality of blue pixel areas and between the plurality of red pixel areas and the plurality of green pixel areas.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: May 23, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Gu Kim, Baek Kyun Jeon, Min-Sik Jung
  • Patent number: 9658495
    Abstract: In a liquid crystal display, a pretilt value provided by an upper alignment layer or a lower alignment layer is gradually changed in one domain, such that liquid crystal molecules have various arrangements in which azimuth angles of aligned liquid crystal molecules are gradually changed.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: May 23, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyoung Tae Kim, Kyoung Ju Shin, Jun Woo Lee, Suk Hoon Kang, Baek Kyun Jeon, Young-Gu Kim
  • Publication number: 20170090223
    Abstract: A method of repairing a liquid crystal display device, the method including, providing a liquid crystal display device including a substrate, a light blocking member disposed on the substrate, and an overcoat layer which is disposed on the substrate and the light blocking member and which contains a material capable of absorbing ultraviolet light having a wavelength range from 200 nanometers to 400 nanometers; and irradiating the overcoat layer with a laser beam having a wavelength range from 200 nanometers to 400 nanometers to form a microcavity between the substrate and the overcoat layer to repair the liquid crystal display.
    Type: Application
    Filed: January 12, 2016
    Publication date: March 30, 2017
    Inventors: Young Gu KIM, Hyun Ku AHN, Baek Kyun JEON, Jae Weon HUR
  • Publication number: 20170052413
    Abstract: A method of reworking a photo-alignment film for use in a liquid crystal display (LCD) includes, providing a substrate on which a photo-alignment film including a photo-reactive group is formed by irradiation of a first light polarized in a first direction, the photo-reactive group including cyclobutane dianhydride (CBDA) or a CBDA derivative and diamine; irradiating a second light polarized in a second direction, which is different from the first direction, onto the photo-alignment film; and treating the photo-alignment film with a splitting solution.
    Type: Application
    Filed: February 8, 2016
    Publication date: February 23, 2017
    Inventors: Jin Soo JUNG, Suk Hoon KANG, Tae Ho KIM, Jong Hwan JEON, In Ok KIM, Baek Kyun JEON
  • Patent number: 9558703
    Abstract: Among data voltages applied to a plurality of pixels on a display panel, a first data voltage is shifted from a first original data voltage by a first value, a second data voltage is shifted from a second original data voltage by a second value, and a third data voltage is shifted from a third original data voltage by a third value to compensate for AC and DC afterimages. A common voltage generator provides an optimal common voltage for the third data voltage when the temperature of the liquid crystal panel assembly is lower than a reference temperature and provides an optimal common voltage for the first data voltage or the second data voltage when the temperature of the liquid crystal panel assembly is higher than or equal to the reference temperature. The first, second, and third values correspond to respective kickback voltages of the respective gray level data voltages.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: January 31, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Soo Jung, Suk Hoon Kang, Jong Hwan Jeon, In Ok Kim, Jun Woo Lee, Baek Kyun Jeon
  • Patent number: 9557603
    Abstract: A method of manufacturing a liquid crystal display panel including forming a pixel electrode including first nano-conductive lines extending in a first direction on a first base substrate and arranged in a second direction substantially perpendicular to the first direction, disposing a second base substrate above the first base substrate, and forming a liquid crystal layer on the first nano-conductive lines, which is aligned by the first nano-conductive lines.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: January 31, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Gu Kim, Baek-Kyun Jeon
  • Publication number: 20170023832
    Abstract: A manufacturing method of a liquid crystal display, including: applying a photoalignment agent on a substrate; baking the applied photoalignment agent; forming a photoalignment layer by irradiating the baked photoalignment agent with polarized light; baking the photoalignment layer; and removing at least one decomposed unit by cleaning the baked photoalignment layer using a cleaning solution including at least one of propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, or ethyl lactate.
    Type: Application
    Filed: January 22, 2016
    Publication date: January 26, 2017
    Inventors: Suk Hoon Kang, Hoi-Lim Kim, Jong Hwan Jeon, Jin-Soo Jung, In Ok Kim, Baek Kyun Jeon
  • Publication number: 20170011693
    Abstract: A display device includes a first base substrate, first through n-th gate lines, first through (m+1)-th data lines, and a plurality of pixels. Each of the first through n-th gate lines extends in a first direction. Each of the first through (m+1)-th data lines extends in a second direction crossing the first direction. The plurality of pixels is arranged in a matrix form. Each of the plurality of pixels is coupled to a corresponding one of the gate lines and a corresponding one of the data lines. Each pixel in the first column among the plurality of pixels is independently driven from each pixel in the second column among the plurality of pixels. Pixels in the first column and pixels in the m-th column are provided in the non-display area. Pixels coupled to the first data line and pixels coupled to the (m+1)-th data line display a black image.
    Type: Application
    Filed: January 28, 2016
    Publication date: January 12, 2017
    Inventors: KYUNG HO PARK, MIN SIK JUNG, YOUNG GU KIM, BAEK KYUN JEON
  • Patent number: 9513513
    Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes: a gate line disposed on a first substrate; a gate insulating layer disposed on the gate line; a semiconductor layer disposed on the gate insulating layer; a data line disposed on the semiconductor layer and including a source electrode; a drain electrode disposed on the semiconductor layer and facing the source electrode via the semiconductor layer interposed therebetween; a passivation layer disposed on the data line and the drain electrode; a pixel electrode disposed on the passivation layer and connected to the drain electrode; a first alignment pattern layer disposed on the pixel electrode; and a first alignment layer disposed on the pixel electrode and the first alignment pattern layer and made of a photoalignment material, wherein the first alignment pattern layer includes a plurality of first alignment patterns separated with a predetermined interval, and the first alignment layer has a concave-convex shape
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: December 6, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bong Sung Seo, Hwa Sung Woo, Baek Kyun Jeon
  • Publication number: 20160313609
    Abstract: A liquid crystal display includes a first substrate and a second substrate facing each other; a pixel electrode disposed on the first substrate; a first alignment layer formed on at least one of the first substrate and the second substrate; a second alignment layer disposed on a same substrate as the first alignment layer, and a liquid crystal layer interposed between the first substrate and the second substrate, where the first alignment layer is a rubbing alignment layer, and the second alignment layer is a photo-alignment layer. A method of manufacturing the liquid crystal display is also provided.
    Type: Application
    Filed: November 13, 2015
    Publication date: October 27, 2016
    Inventors: Jae Weon HUR, Min-Sik JUNG, Young Gu KIM, Baek Kyun JEON
  • Patent number: 9459495
    Abstract: Provided is a liquid crystal display that includes: a first substrate; a thin film transistor disposed on the first substrate; a first electrode connected to the thin film transistor; and a first alignment layer disposed on the first electrode. The first alignment layer is formed by polymerizing a diamine and at least one of cyclobutane dianhydride (CBDA) and a cyclobutane dianhydride (CBDA) derivative. A decomposition efficiency representing a change in imidization ratio included before and after light exposure of the first alignment layer is in a range of 10% to 30%.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: October 4, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Suk Hoon Kang, Yeong Rong Park, Sang Hee Yu, Mi Hwa Lee, Jun Woo Lee, Baek Kyun Jeon, Pil Ho Huh
  • Publication number: 20160266441
    Abstract: A liquid crystal display is provided. A photo-alignment layer thereof includes a polyimide and a crosslinker including an alkylene group (—CnH2n—, where n is a natural number) and a plurality of crosslinking end groups, wherein the plurality of crosslinking end groups include at least two types of end groups or end group derivatives, each type having a different available functional group.
    Type: Application
    Filed: January 26, 2016
    Publication date: September 15, 2016
    Inventors: Jin-Soo JUNG, Suk Hoon KANG, Jong Hwan JEON, In Ok KIM, Jun Woo LEE, Baek Kyun JEON
  • Patent number: 9417484
    Abstract: A liquid crystal display includes; a first substrate, a second substrate disposed facing the first substrate, an alignment layer disposed on at least one of the first substrate and the second substrate, wherein the alignment layer comprises a major alignment material and a vertical photo-alignment material, and the vertical photo-alignment material comprises a first vertical functional group, and a liquid crystal layer interposed between the first substrate and the second substrate.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: August 16, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun-Woo Lee, Jong-Sung Bae, Hoi-Lim Kim, Baek-Kyun Jeon, Suk-Hoon Kang, Jin-Soo Jung, Soo-Ryun Cho
  • Publication number: 20160229958
    Abstract: A photoalignment agent includes a polyimide and a capping terminal connected to a main chain end terminal of the polyimide. The capping terminal includes an alkylene group (—CmH2m—, m is a natural number) and a core stereo unit in a dendrimer format. A liquid crystal display includes a first substrate, a thin film transistor disposed on the first substrate, a first electrode connected to the thin film transistor, and a first alignment layer disposed on the first electrode. The first alignment layer includes a polyimide and a capping terminal connected to a main chain end terminal of the polyimide. The capping terminal includes an alkylene group (—CmH2m-, m is a natural number) and a core stereo unit in a dendrimer format.
    Type: Application
    Filed: August 21, 2015
    Publication date: August 11, 2016
    Inventors: Jong Hwan JEON, Suk Hoon KANG, Jin-Soo JUNG, In Ok KIM, Jun Woo LEE, Baek Kyun JEON
  • Publication number: 20160230095
    Abstract: A liquid crystal photo-alignment agent includes a polyimide copolymer including a first structure unit represented by the described Chemical Formula 1 and a second structure unit represented by the described Chemical Formula 2, and, based on a 100 mole % sum total of the first structure unit and the second structure unit, the first structure unit is included in an amount of 70 to 95 mole % and the second structure unit is included in an amount of 5 to 30 mole %. A liquid crystal photo-alignment film may be manufactured using the same, and a liquid crystal display may include the liquid crystal photo-alignment film.
    Type: Application
    Filed: January 15, 2016
    Publication date: August 11, 2016
    Inventors: SUK HOON KANG, JIN-SOO JUNG, JUN WOO LEE, JONG HWAN JEON, IN OK KIM, BAEK KYUN JEON
  • Publication number: 20160209710
    Abstract: A liquid crystal display includes a first substrate, a gate line on the first substrate, a thin film transistor on the first substrate and connected to the gate line, a first electrode and a second electrode on the first substrate, an insulating layer between the first electrode and the second electrode, a second substrate facing the first substrate, and a liquid crystal layer between the first substrate and the second substrate and including a liquid crystal molecule. One of the first electrode and the second electrode includes a plurality of branch electrodes extending in an extension direction parallel to the gate line, and the other one of the first electrode and the second electrode has a planar shape. The liquid crystal molecule of the liquid crystal layer has negative dielectric anisotropy.
    Type: Application
    Filed: July 31, 2015
    Publication date: July 21, 2016
    Inventors: Bong Sung SEO, Chang-Hun LEE, Baek Kyun JEON
  • Patent number: 9389463
    Abstract: Provided is a liquid crystal display, including: a first substrate; a first electrode and a second electrode disposed on the first substrate and overlapping with each other with a first insulating layer therebetween; a second insulating layer disposed on the first substrate and having an opening; a second substrate facing the first substrate; a first alignment layer disposed on the first substrate; a second alignment layer disposed on the second substrate; and a spacer disposed between the first alignment layer and the second alignment layer, in which the spacer is positioned in the opening.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: July 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin-Soo Jung, Bong Sung Seo, Jun Woo Lee, Baek Kyun Jeon, Min-Sik Jung