Patents by Inventor Ji-Won Sohn

Ji-Won Sohn 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: 7773165
    Abstract: The liquid crystal display includes a thin film transistor (TFT) panel including a pixel electrode in a rectangular shape having a transverse length longer than a longitudinal length, the pixel electrode including a first domain divider and having upper and lower half portions arranged symmetrically with respect to a transverse long axis passing through a center of the pixel electrode, a common electrode panel including a common electrode facing the pixel electrode, the common electrode including a second domain divider arranged parallel with the first domain divider, and a liquid crystal layer interposed between the TFT panel and the common electrode panel.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: August 10, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-won Sohn, Mee-hye Jung, Nak-cho Choi, Ho-yun Byun, Seon-ah Cho, Sik-young Jo
  • Publication number: 20100195036
    Abstract: A liquid crystal display (LCD) comprises a first substrate comprising a pixel electrode comprising one or more first domain-forming features and further comprising a first vertical alignment film disposed on the pixel electrode; a second substrate facing the first substrate and comprising a common electrode which comprises one or more second domain-forming features and further comprises a second vertical alignment film disposed on the common electrode; and a liquid crystal compound interposed between the first and second substrates, wherein the liquid crystal compound comprises liquid crystal molecules, ultraviolet (UV) hardening monomers and UV hardening initiators, and the liquid crystal molecules are pre-tilted to form an angle greater than 88 degrees but less than 90 degrees with respect to the first substrate when no driving power is applied to the pixel and common electrodes. Fast response time is provided in some embodiments.
    Type: Application
    Filed: April 9, 2010
    Publication date: August 5, 2010
    Inventors: Ji-won SOHN, Jong-ho Son, Seung-beom Park, Seon-ah Cho, Jun-hee Na
  • Publication number: 20100182556
    Abstract: A liquid crystal display device that includes an array substrate, an opposite substrate and a liquid crystal display layer is described. The array substrate includes a pixel electrode and a lower alignment layer. The pixel electrode has a plurality of slit portions extending in different directions. The lower alignment layer includes a reactive mesogen (RM) diamine is formed on the pixel electrode to induce an alignment direction of the liquid crystal molecules. An upper alignment layer is formed on a common electrode of the opposite substrate. The RM is cured at surfaces of the lower and upper alignment layers in response to ultraviolet (UV) light, so that liquid crystal molecules have a pretilt angle. Therefore, the aperture ratio and the response time may be improved, and afterimages may be decreased, so that display quality may be improved.
    Type: Application
    Filed: January 7, 2010
    Publication date: July 22, 2010
    Inventors: Keun-Chan Oh, Jae-Jin Lyu, Ji-Won Sohn, Seon-Ah Cho
  • Publication number: 20100177271
    Abstract: An array substrate includes a pixel electrode, a thin-film transistor (TFT) and a storage line. The pixel electrode has a first electrode portion, a second electrode portion and a connecting electrode portion to electrically connect the first and second electrode portions to each other. The second electrode portion is spaced apart from the first electrode portion by a predetermined distance in a first direction. The TFT is electrically connected to the pixel electrode to drive the pixel electrode. The storage line overlaps a portion of the pixel electrode and has an asymmetric connecting electrode closer to the second electrode portion than to the first electrode portion.
    Type: Application
    Filed: February 22, 2010
    Publication date: July 15, 2010
    Inventors: Seon-Ah CHO, Jae-Jin Lyu, Ji-Won Sohn, Jin-Won Park
  • Patent number: 7724333
    Abstract: A liquid crystal display (LCD) comprises a first substrate comprising a pixel electrode comprising one or more first domain-forming features and further comprising a first vertical alignment film disposed on the pixel electrode; a second substrate facing the first substrate and comprising a common electrode which comprises one or more second domain-forming features and further comprises a second vertical alignment film disposed on the common electrode; and a liquid crystal compound interposed between the first and second substrates, wherein the liquid crystal compound comprises liquid crystal molecules, ultraviolet (UV) hardening monomers and UV hardening initiators, and the liquid crystal molecules are pre-tilted to form an angle greater than 88 degrees but less than 90 degrees with respect to the first substrate when no driving power is applied to the pixel and common electrodes. Fast response time is provided in some embodiments.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: May 25, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-won Sohn, Jong-ho Son, Seung-beom Park, Seon-ah Cho, Jun-hee Na
  • Publication number: 20100103357
    Abstract: A liquid crystal display device includes an array substrate, an opposite substrate and a liquid crystal display layer. The array substrate includes a pixel electrode and a lower reactive mesogen layer. The pixel electrode includes a plurality of slit portions disposed on a plurality of domains in different directions. The lower reactive mesogen layer is disposed on the pixel electrode to induce an inclined direction of liquid crystal molecules. The opposite substrate includes an upper substrate. An upper reactive mesogen layer is disposed on a common electrode of the opposite substrate. The liquid crystal layer includes liquid crystal molecules arranged to have a pretilt angle between a surface of the lower reactive mesogen layer and a surface of the upper reactive mesogen layer.
    Type: Application
    Filed: April 6, 2009
    Publication date: April 29, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Myeong-Ha KYE, Jun-Hyup LEE, Jae-Jin LYU, Seung-Beom PARK, Jong-Ho SON, Ji-Won SOHN, Hoon KIM, Min-Goo SEOK, Jun-Hee NA, Min-Jae KIM, Su-Han WOO
  • Patent number: 7697096
    Abstract: A liquid crystal display is provided, which includes: a substrate; a field-generating electrode formed on the substrate; and a slope member formed on the substrate and having an inclination angle smaller than about 45 degrees.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: April 13, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nak-Cho Choi, Jae-Jin Lyu, Chang-Hun Lee, Dong-Ki Lee, Hak-Sun Chang, Soo-Jin Kim, Hee-Wook Do, Jiangang Lu, Ji-Won Sohn, Mee-Hye Jung, Il-Kook Huh
  • Publication number: 20100060838
    Abstract: A liquid crystal display (“LCD”) includes first and second substrates facing each other, a plurality of pixel electrodes arranged in a matrix shape on the first substrate and including a stem and a plurality of minute branches obliquely extending from the stem, a common electrode facing the plurality of pixel electrodes, and a liquid crystal layer interposed between the first substrate and the second substrate and including a plurality of liquid crystal molecules, wherein the pixel electrodes are classified into a plurality of sub-regions according to a length direction of the minute branches, and the minute branches are protruded at edges of the sub-regions.
    Type: Application
    Filed: July 23, 2009
    Publication date: March 11, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hoon KIM, Jae-Jin LYU, Ji-Won SOHN, Myeong-Ha KYE, Min-Jae KIM
  • Publication number: 20100053526
    Abstract: A liquid crystal display (“LCD”) panel includes a display substrate, an opposite substrate and a liquid crystal layer. The display substrate includes a pixel electrode and a first cured layer. The first cured layer has various pretilt angles. The opposite substrate includes a common electrode and a second cured layer. The second cured layer has various pretilt angles. The liquid crystal layer includes a plurality of liquid crystal molecules pretilted at the various pretilt angles by the first and second cured layers.
    Type: Application
    Filed: April 6, 2009
    Publication date: March 4, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Myeong-Ha KYE, Jae-Jin LYU, Ji-Won SOHN
  • Patent number: 7671951
    Abstract: A liquid crystal display includes a plurality of pixel electrodes that are formed in a matrix shape and each of which includes at least two parallelogram electrode pieces each having a pair of lengthwise edges and a pair of oblique edges adjacent the lengthwise edges, and a common electrode that faces the pixel electrodes and that has tilt direction determining members. Transverse center lines of the pixel electrodes that are adjacent each other in a row direction alternate, and the tilt direction determining members that correspond to the pixel electrodes that are adjacent to each other in the row direction are connected to each other in the row direction.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: March 2, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nak-Cho Choi, Ji-Won Sohn, Mee-Hye Jung, Ho-Yun Byun, Seon-Ah Cho
  • Patent number: 7667805
    Abstract: An array substrate includes a pixel electrode, a thin-film transistor (TFT) and a storage line. The pixel electrode has a first electrode portion, a second electrode portion and a connecting electrode portion to electrically connect the first and second electrode portions to each other. The second electrode portion is spaced apart from the first electrode portion by a predetermined distance in a first direction. The TFT is electrically connected to the pixel electrode to drive the pixel electrode. The storage line overlaps a portion of the pixel electrode and has an asymmetric connecting electrode closer to the second electrode portion than to the first electrode portion.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: February 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seon-Ah Cho, Jae-Jin Lyu, Ji-Won Sohn, Jin-Won Park
  • Publication number: 20100039634
    Abstract: Provided is an exposure apparatus, including a plurality of exposure lamps and a luminance changing mechanism disposed between the exposure lamps and an exposure target. The luminance changing mechanism changes the location at which the exposure light generated from the exposure lamps reaches the exposure target by changing the direction in which the exposure light travels.
    Type: Application
    Filed: March 26, 2009
    Publication date: February 18, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hye-Ran You, Yoon-Sung Um, Ji-Won Sohn, Jun-Hyup Lee, Myeong-Ha Kye, Su-Han Woo
  • Publication number: 20100007830
    Abstract: A method of manufacturing a display panel, the method includes forming a display panel including a first substrate, the first substrate including a pixel electrode disposed thereon, a second substrate including a common electrode disposed thereon, and a liquid crystal layer interposed between the first and the second substrates, the liquid crystal layer including a plurality of liquid crystal molecules and a plurality of ultraviolet (“UV”)-curable particles; and curing a portion of the UV-curable particles by irradiating light on the display panel, wherein an exposure voltage, which is greater than a maximum data voltage corresponding to maximum grayscale data of the display panel, is applied between the pixel electrode and the common electrode. Also described is a display panel.
    Type: Application
    Filed: April 1, 2009
    Publication date: January 14, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-Jae KIM, Jae-Jin LYU, Seung-Beom PARK, Ji-Won SOHN, Jun-Hyup LEE, Myeong-Ha KYE, Hoon KIM, Min-Goo SEOK
  • Patent number: 7633589
    Abstract: A liquid crystal display is provided. The liquid crystal display includes: a first substrate, a first electric field generating electrode which is located on the first substrate and which has a plurality of cut portions, a direction control electrode located on the first substrate and overlapping at least one of the cut portions, a second substrate facing the first substrate, a second electric field generating electrode located on the second substrate and opposite to the first electric field generating electrode. The liquid crystal display further includes a liquid crystal layer interposed between the first electric field generating electrode and the second electric field generating electrode, and a slope member located on one of the first and second substrate and having a ridge and a slope. The ridge corresponds to the direction control electrode.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: December 15, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nak-Cho Choi, Ji-Won Sohn, Chong-Chul Chai, Hee-Seop Kim
  • Publication number: 20090270007
    Abstract: A method of manufacturing a liquid crystal display includes; forming a mother substrate assembly by disposing a liquid crystal mixture layer having liquid crystals and a light curable alignment supplement between a first mother substrate and a second mother substrate of a liquid crystal display, and disposing a light curable sealant surrounding the liquid crystal mixture layer, pre-tilting liquid crystal molecules of the liquid crystal mixture layer by applying a voltage to the first mother substrate and the second mother substrate, and simultaneously hardening the alignment supplement and the sealant by radiating light to the mother substrate assembly while applying the voltage to the first mother substrate and the second mother substrate.
    Type: Application
    Filed: October 29, 2008
    Publication date: October 29, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-Goo Seok, Jae-Jin Lyu, Seung-Beom Park, Jong-Ho Son, Ji-Won Sohn, Myeong-Ha Kye, Hoon Kim, Jun-Hee Na
  • Publication number: 20090244425
    Abstract: The present invention relates to a liquid crystal display including a pixel electrode including a first subpixel electrode and a second subpixel electrode spaced apart with a gap therebetween, a common electrode facing the pixel electrode, and a liquid crystal layer formed between the pixel electrode and the common electrode and including a plurality of liquid crystal molecules. The first and second subpixel electrodes include a plurality of branches, and each of the first and second subpixel electrodes includes a plurality of subregions. The branches extend in different directions in different subregions.
    Type: Application
    Filed: December 4, 2008
    Publication date: October 1, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Mee-Hye JUNG, Ji-Won Sohn, Jae-Jin Lyu, Chong-Chul Chai
  • Publication number: 20090046233
    Abstract: A TFT array is disclosed that includes a substrate, a gate line formed on the substrate, the gate line extending in a first direction; a data line insulated from the gate line, the data line extending in a second direction different from the first direction and crossing the gate line; and a pixel, positioned adjacent an intersection of the gate line and the data line, wherein the pixel comprises a first pixel electrode portion comprising a plurality of spaced apart first electrode lines, the first pixel electrode portion having an associated TFT coupled to the first electrode portion, a second pixel electrode portion comprising a plurality of spaced apart second electrode lines, the second pixel electrode portion capacitively coupled with the first pixel electrode portion, wherein a width of each of the first electrode lines of the first pixel electrode portion is narrower than a width of each of the second electrode lines of the second pixel electrode portion, and an interval between adjacent first electrode
    Type: Application
    Filed: July 30, 2008
    Publication date: February 19, 2009
    Applicant: Samsung Electronics Co., LTD
    Inventors: Seon-Ah CHO, Ji-Won Sohn, Hee-Wook Do, Jun-Hee Na
  • Publication number: 20090040448
    Abstract: A liquid crystal display includes; a gate line, a data line disposed substantially perpendicular to the gate line, a switching element connected to the gate line and the data line, a pixel electrode connected to the switching element, and having a first inclination direction determining member including at least one first oblique portion forming an oblique angle with the gate line and the data line, and an inclination direction assistance member disposed adjacent to the first inclination direction determining member, and substantially parallel to the first oblique portion.
    Type: Application
    Filed: August 7, 2008
    Publication date: February 12, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Hoon KIM, Ji-Won SOHN, Seung-Beom PARK, Yoon-Sung UM, Jin-Won PARK, Hye-Ran YOO
  • Publication number: 20090002588
    Abstract: A display device includes: a first panel having a pixel region including a pixel electrode therein; a second panel having a common electrode facing the first panel; a liquid crystal layer having vertically aligned liquid crystal molecules interposed between the first and second panels; a first alignment layer disposed on the pixel electrode; and a second alignment layer disposed on the common electrode. At least one of the pixel electrode and the common electrode has a micro slit pattern. At least one of the first and second alignment layers divides the pixel region into domains, is formed to have pretilt directions corresponding to a given domain, and pretilts the vertically aligned liquid crystal molecules in the given domain. A direction of summed horizontal components of a fringe field at an edge of the pixel region is substantially equal to a direction of summed horizontal components of a pretilt direction of the at least one of the first and second alignment layer.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 1, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jun-woo LEE, Hwa-sung WOO, Baek-kyun JEON, Ji-won SOHN, In-suk LEE, Kyoung-tae KIM
  • Patent number: 7471365
    Abstract: A liquid crystal display is provided, which includes: a first substrate; a first signal line disposed on the first substrate; a second signal line disposed on the first substrate and intersecting the first signal line; a thin film transistor coupled with the first and the second signal lines; a pixel electrode coupled with the thin film transistor; a second substrate facing the first substrate; a common electrode arranged on the second substrate; a liquid crystal layer arranged between the first substrate and the second substrate; a first tilt direction determining member arranged on the first substrate; and a second tilt direction determining member arranged on the first substrate, wherein the first tilt direction determining member is about 15 microns to about 20 microns apart from the second tilt direction determining member.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: December 30, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hak-Sun Chang, Ji-Won Sohn, Nak-Cho Choi, Hyun-Wuk Kim