Patents by Inventor Hyang Yul Kim

Hyang Yul Kim 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: 7535534
    Abstract: An FFS (Fringe Field Switching) mode liquid crystal display comprises a lower substrate and an upper substrate and a gate line formed on the lower substrate. A data line crosses perpendicular to the gate line. A first ITO electrode is formed in a region defined by the gate line and the data line. A second ITO electrode of a comb-teeth pattern is formed on the lower substrate while being overlapped on the first ITO electrode. A black matrix formed on the upper substrate, wherein, a wedge portion of the second ITO electrode is formed at a position spaced by a predetermined interval to the inside from an edge section of the black matrix.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: May 19, 2009
    Assignee: Hydis Technologies Co., Ltd.
    Inventors: Kyung Ha Lee, Hyang Yul Kim, Jong Yob Jeon, Chi Wook An
  • Patent number: 7525614
    Abstract: Disclosed is a fringe field switching mode transflective liquid crystal display capable of displaying high quality images. The transflective liquid crystal display includes a lower substrate having a counter electrode and a pixel electrode, an upper substrate aligned in opposition to the lower substrate by interposing a liquid crystal layer therebetween, an upper polarizing plate, a lower polarizing plate, a reflective plate provided at an inner portion of the lower substrate, a lower ?/2 plate, and an upper ?/2 plate. An inclination angle, a slit width and a slit interval of the pixel electrode of the reflective area are different from those of the pixel electrode of the transmissive area. The liquid crystal layer presents a phase delay of about 0 to ?/4 in the reflective area and presents a phase delay of about 0 to ?/2 in the transmissive area.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: April 28, 2009
    Assignee: Hydis Technologies Co., Ltd.
    Inventors: Youn Hak Jeong, Hyang Yul Kim, Jun Baek Park, Kwi Hyun Kim
  • Publication number: 20080180624
    Abstract: Provided is a fringe field switching mode liquid crystal display. The fringe field switching mode liquid crystal display includes a transparent common electrode having a predetermined shape and formed within the pixel area to adjust light transmittance by applying a voltage to the liquid crystal layer, and a transparent pixel electrode having a plurality of slits and formed above the transparent common electrode with an insulating layer interposed between the transparent common electrode and the transparent pixel electrode. A rubbing direction for aligning the liquid crystal layer is within 5° with respect to a direction of the gate line to remove a light shielding region above the data line, one end of the transparent common electrode is arranged between the data line and the transparent pixel electrode, and a distance between the transparent common electrode and the transparent pixel electrode is regulated with respect to the data line.
    Type: Application
    Filed: March 20, 2007
    Publication date: July 31, 2008
    Applicant: Beo Hydis Technology Co., Ltd.
    Inventors: Suk Choi, Seung Jun Baek, Soon Ju Jang, Tae Hyun Jun, Hyang Yul Kim
  • Patent number: 7169456
    Abstract: Disclosed is a transcription plate for forming orientation layer by coating printed orientation agent onto a substrate. The transcription plate comprises a base film and photosensitive resin plate, such as an APR layer, wherein a number of dots are arranged on the photosensitive resin plate in a regular fashion, and an arrangement of outer dots disposed outside of an active area of the transcription plate is denser than that of inner dots disposed within an active area of the transcription plate. The transcription plate enables the thickness of the orientation layer along the edge outside of the active layer of the transcription plate to be formed with the uniform thickness. Therefore, a uniform image property can be obtained by uniform rubbing. Further, because such phenomenon as conglomeration of the orientation agent does not occur, non-uniformity of cell gaps, which is caused by the superposition on the sealing line, can be solved.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: January 30, 2007
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, Sung Hun Song
  • Patent number: 7048619
    Abstract: The present invention relates to a rubbing machine with realigning functions for use in an LCD manufacturing process and also to a rubbing method which is conducted using the same. The rubbing machine is used to determine the direction of alignment by rubbing an alignment film coated on a substrate disposed on a stage. In this rubbing machine, an realigning section for realigning a rubbing cloth is disposed on the portion of a rubbing roll in such a manner that the realigning section be in contact with the rubbing cloth.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: May 23, 2006
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Chi Hyuck Park, Hyang Yul Kim, Tae Kyu Park
  • Patent number: 6927833
    Abstract: The present invention relates to a method for forming post spacers in a liquid crystal display, which enables cell gap to be uniform by means of a half-tone mask. The method comprises the steps of: defining a active region and a dummy region in a substrate; forming a black matrix on the substrate at the outside of the active region; selectively forming a RGB resin film on the active region while selectively forming a RGB resin film on the dummy region; forming a protective film on the resulting structure; forming a photosensitive resin film on the protective film; forming a half-tone mask pattern on the photosensitive resin film; and selectively etching the photosensitive resin film using the half-tone mask pattern so as to form the post spacers having a different height.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: August 9, 2005
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Publication number: 20050046775
    Abstract: Disclosed is an FFS (Fringe Field Switching) mode liquid crystal display. The FFS mode liquid crystal display comprises: a lower substrate and an upper substrate; a gate line formed on the lower substrate; a data line crossing perpendicular to the gate line; a first ITO electrode formed in a region defined by the gate line and the data line; a second ITO electrode of a comb-teeth pattern formed on the lower substrate while being overlapped on the first ITO electrode; and a black matrix formed on the upper substrate, wherein, a wedge portion of the second ITO electrode is formed at a position spaced by a predetermined interval to the inside from an edge section of the black matrix.
    Type: Application
    Filed: June 30, 2004
    Publication date: March 3, 2005
    Inventors: Kyung Ha Lee, Hyang Yul Kim, Jong Yob Jeon, Chi Wook An
  • Patent number: 6856371
    Abstract: High screen quality In Plane-Fringe Field Switching mode Liquid Crystal Device (“LCD”) having plural gate bus and data bus line cross-arranged on a transparent substrate; common bus lines parallel with the gate bus line; thin film transistor at the intersection of the gate bus and the data bus lines; counter electrode, including a first body parallel with the data bus lines and a plurality of first branches, the end of one side being in contact with the first body, the first branches having a predetermined angle symmetric with the common bus line; and pixel electrode, including a second body parallel with the data bus line and plural second branches, the other end being in contact with the second body and the one end being extended to the upper part of the first branches, the second branches being on the same layer with the first branches, extending parallel between the first branches.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: February 15, 2005
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, Seung Hee Lee, Jai Wan Koh
  • Patent number: 6853434
    Abstract: A liquid crystal display device with plastic substrates is disclosed, which comprises: a subsidiary substrate, upper and lower plastic substrates including edge grooves and being fixed on the subsidiary substrate by heat resistant tapes and being joined with liquid crystals sealed there-between, and alignment layers formed on the surfaces which face one another of the upper and lower plastic substrates.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: February 8, 2005
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6809789
    Abstract: A liquid crystal display device capable of realizing high aperture ratio and high brightness by reducing or removing a conventional black matrix layer is provided. The device has a lower substrate and an upper substrate confronting each other. A counter electrode is formed on the lower substrate, and a pixel electrode is formed on the counter electrode with an insulating layer interposed. A lower polarizing plate and an upper polarizing plate are attached on respective outer sides of the lower and the upper substrates. The device further has a gate bus line and a data bus line. Particularly, a rubbing direction of the lower substrate corresponds with a direction of noise field formed between the data bus line and the pixel electrode or the counter electrode and between the gate bus line and the pixel electrode or the counter electrode.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: October 26, 2004
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6801290
    Abstract: A liquid crystal display device with spacers integrally formed at a plastic substrate. The liquid crystal display device comprises: upper and lower substrates joined with liquid crystals interposed there-between, at least one substrate of which is made of plastic; a driving electrode for the liquid crystals formed at the lower substrate; polarizers attached at respective rear surfaces of the upper and lower substrates; and spacers interposed between the upper and lower substrates to maintain cell gaps, wherein the spacers are integrally formed at the substrate, and concurrently act as posts. Also, spacers can be integrally formed at either one of the lower plastic substrate and the upper plastic substrate, or the spacers can be integrally formed at both the lower plastic substrate and the upper plastic substrate, and the spacers have a height of “cell gap±a”, wherein the cell gap is 0.2 to 10 &mgr;m and “a” is not more than 1 &mgr;m.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: October 5, 2004
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, Jin Mahn Kim, Seung Hee Lee
  • Patent number: 6781657
    Abstract: A method of producing two domains within a liquid crystal layer by first forming two electrodes on a substrate, using a liquid crystal layer aligned vertically with respect to the substrate formed on the substrate where the substrate has two electrodes separated from each other with a selected distance. Finally, an electric field between the two electrodes is applied.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: August 24, 2004
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6721028
    Abstract: The present invention provides a Fringe Field Switching-Liquid Crystal Display comprising: an upper substrate and a lower substrate; a gate line and a data line for defining a unit pixel, a plurality of protrusion parts being respectively formed on an edge region of the gate line adjacent to a pixel electrode, each of protrusion parts of the gate line being positioned in a depression part formed between the protrusion parts of the pixel electrode; a counter electrode formed in the unit pixel; a common line for applying a common signal to the counter electrode; a pixel electrode forming an electric field with the counter electrode, a plurality of protrusion parts being formed on an edge region of the pixel electrode adjacent to the gate line, each of protrusion parts being positioned in a depression part formed between the protrusion parts of the gate line; and a liquid crystal filled between the upper substrate and the lower substrate.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: April 13, 2004
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6713784
    Abstract: Disclosed is an in-plane switching(IPS) mode liquid crystal display(LCD) to prevent generating parasitic electric field due to residual DC components and static electricity. The IPS mode LCD according to the present invention comprises a first substrate; counter electrodes formed on the first substrate; pixel electrodes formed on the first substrate and spaced apart from the counter electrodes; a first high dielectric layer formed between the counter and pixel electrodes on the first substrate in which the counter and pixel electrodes are formed; a second substrate opposed to the first substrate; and a second high dielectric layer disposed at an inner surface of the second substrate.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: March 30, 2004
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, In Cheol Park, Seung Hee Lee
  • Publication number: 20040038010
    Abstract: Disclosed is a transcription plate for forming orientation layer by coating printed orientation agent onto a substrate. The transcription plate comprises a base film and an APR layer, wherein a number of dots are arranged on the APR layer in a regular fashion, and an arrangement of outer dots disposed outside of an active area of the transcription plate is denser than that of inner dots disposed within an active area of the transcription plate. The transcription plate enables the thickness of the orientation layer along the edge outside of the active layer of the transcription plate to be formed with the uniform thickness. Therefore, a uniform image property can be obtained by uniform rubbing. Further, because such phenomenon as conglomeration of the orientation agent does not occur, non-uniformity of cell gaps, which is caused by the superposition on the sealing line, can be solved.
    Type: Application
    Filed: August 15, 2003
    Publication date: February 26, 2004
    Inventors: Hyang Yul Kim, Sung Hun Song
  • Patent number: 6657693
    Abstract: Liquid crystal display having fast response time and preventing color shift is disclosed.
    Type: Grant
    Filed: December 7, 1999
    Date of Patent: December 2, 2003
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Youn Hak Jeong, Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6646706
    Abstract: Disclosed is a fringe field switching mode liquid crystal display.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: November 11, 2003
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Kyu Hwan Lim, Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6642985
    Abstract: The present invention discloses a fringe field switching mode liquid crystal display. The disclosed comprises: a lower and an upper substrates disposed opposite to each other at a predetermined distance, having transparency; a counter electrode and a pixel electrode disposed on the inner surface of the lower substrate with a gate insulating layer interposed and made of transparent conductors, forming a fringe field when a electric field is applied; a black matrix and color filter formed on the inner surface of the upper substrate; an ITO layer disposed on the inner surface of the upper substrate which has the black matrix and the color filter therein; and a liquid crystal layer interposed between the lower and the upper substrates, including a plurality of liquid crystal molecules of negative dielectric anisotropy. In the FFS mode LCD of the present invention, the counter electrode has a plate shape and the pixel electrode has a slit shape.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: November 4, 2003
    Assignee: Hyundai Display Technology Inc.
    Inventors: Hyang Yul Kim, Seung Hee Lee, Seung Ho Hong
  • Publication number: 20030151715
    Abstract: A liquid crystal display device with spacers integrally formed at a plastic substrate. The liquid crystal display device comprises: upper and lower substrates joined with liquid crystals interposed there-between, at least one substrate of which is made of plastic; a driving electrode for the liquid crystals formed at the lower substrate; polarizers attached at respective rear surfaces of the upper and lower substrates; and spacers interposed between the upper and lower substrates to maintain cell gaps, wherein the spacers are integrally formed at the substrate, and concurrently act as posts. Also, spacers can be integrally formed at either one of the lower plastic substrate and the upper plastic substrate, or the spacers can be integrally formed at both the lower plastic substrate and the upper plastic substrate, and the spacers have a height of “cell gap±a”, wherein the cell gap is 0.2 to 10 &mgr;m and “a” is not more than 1&mgr;m.
    Type: Application
    Filed: December 30, 2002
    Publication date: August 14, 2003
    Inventors: Hyang Yul Kim, Jin Mahn Kim, Seung Hee Lee
  • Patent number: 6603526
    Abstract: The present invention is directed to provide a liquid crystal display having an improved picture quality, high transmittance and high aperture ratio.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: August 5, 2003
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, Seung Hee Lee