Patents by Inventor Yong Eui Lee

Yong Eui 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: 9417499
    Abstract: A multi-color electrophoretic display (EPD) device, an image sheet, and a method of fabricating the same. The multi-color EPD device includes: a plurality of unit color pixels; and a plurality of color capsules, each comprising color capsule shell which stores a dielectric fluid and at least one type of electrophoretic particles dispersed in the dielectric fluid, the plurality of color capsules being arranged to define subpixels of each of the plurality of unit color pixels.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: August 16, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Chul Hwan Kim, Yong Eui Lee
  • Patent number: 8830562
    Abstract: A multi-color electrophoretic display (EPD) device, an image sheet, and a method of manufacturing the same. The method of manufacturing the multi-color EPD device includes: forming capsules including photosensitive color-developing capsule shells each of which stores a dielectric fluid and at least one type of electrophoretic particles dispersed in the dielectric fluid; disposing the capsules in a unit color pixel area on a substrate; exposing the capsules to light to form a latent image of a color pattern image on the capsules; and developing the photosensitive color-developing capsule shells of the capsules to form unit color pixels including color capsules.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: September 9, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Chul Hwan Kim, Yong Eui Lee
  • Publication number: 20130114126
    Abstract: A multi-color electrophoretic display (EPD) device, an image sheet, and a method of manufacturing the same. The method of manufacturing the multi-color EPD device includes: forming capsules including photosensitive color-developing capsule shells each of which stores a dielectric fluid and at least one type of electrophoretic particles dispersed in the dielectric fluid; disposing the capsules in a unit color pixel area on a substrate; exposing the capsules to light to form a latent image of a color pattern image on the capsules; and developing the photosensitive color-developing capsule shells of the capsules to form unit color pixels including color capsules.
    Type: Application
    Filed: March 25, 2011
    Publication date: May 9, 2013
    Inventors: Chul Hwan Kim, Yong Eui Lee
  • Publication number: 20130114125
    Abstract: A multi-color electrophoretic display (EPD) device, an image sheet, and a method of fabricating the same. The multi-color EPD device includes: a plurality of unit color pixels; and a plurality of color capsules, each comprising color capsule shell which stores a dielectric fluid and at least one type of electrophoretic particles dispersed in the dielectric fluid, the plurality of color capsules being arranged to define subpixels of each of the plurality of unit color pixels.
    Type: Application
    Filed: March 25, 2011
    Publication date: May 9, 2013
    Inventors: Chul Hwan Kim, Yong Eui Lee
  • Patent number: 7889419
    Abstract: An electrophoretic display and a method of manufacturing the electrophoretic display are provided. The electrophoretic display includes an lower electrode formed on an under layer, an lower electrode protection layer formed on the lower electrode, an insulating template formed on the lower electrode protection layer and having a plurality of holes of smaller size than the wavelength of visible rays region, a dielectric fluid filling the holes and having a color, a plurality of charged particles suspended in the dielectric fluid filling each of the plurality of holes having a color different from the color of the dielectric fluid, and an upper electrode formed on the insulating template in sequential order. Accordingly, a problem of agglomeration of the charged particles can be solved by the insulating template having holes of smaller size than the wavelength of visible rays region, and thus a reliable electrophoretic display emitting light of one color or natural colors is achieved.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: February 15, 2011
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong Deok Ahn, Kyung Soo Suh, Seung Youl Kang, Yong Eui Lee, Chul Am Kim, Meyoung Ju Joung, Mi Kyung Kim, Gun Hong Lee
  • Patent number: 7803673
    Abstract: A method of manufacturing a thin film transistor (“TFT”) substrate includes forming a gate insulating film and an active layer on a substrate, forming a data metal layer including a first, second, and third metal layers on the active layer, forming a first photoresist pattern on the data metal layer, dry-etching the third metal layer by using the first photoresist pattern, simultaneously dry-etching the second and first metal layers by using the first photoresist pattern, dry-etching the active layer by using the first photoresist pattern, etching the first photoresist pattern to form a second photoresist pattern by which the channel region is removed and forming a source electrode and a drain electrode by dry-etching the channel region of the data metal layer by using the second photoresist pattern.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: September 28, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Duck-Jung Lee, Dae-Ho Song, Kyung-Seop Kim, Yong-Eui Lee
  • Publication number: 20100194672
    Abstract: Provided is a color filter that can ensure high productivity by producing all colors in a single process irrespective of colors of pixels and can improve uniformity in the transmittance, color reproduction, and thickness of pixels having their colors. The color filter includes: a substrate; and at least one of light sensitive color developing layers stacked on the substrate, the light sensitive color developing layers having pixel portions, wherein the pixel portions are defined by partial color developing regions formed by exposure and development of the light sensitive color developing layer.
    Type: Application
    Filed: September 19, 2008
    Publication date: August 5, 2010
    Applicant: IMAGE & MATERIALS, INC.
    Inventors: Chul Hwan Kim, Yong Eui Lee
  • Patent number: 7755380
    Abstract: Apparatus and methods for repairing display devices of a type that include a first substrate having a plurality of signal lines formed thereon and/or a second substrate having a plurality of color filters formed thereon include a laser that radiates laser light having a wavelength in a range of from about 750 to about 850 nm, or alternatively, of from about 1000 to about 1100 nm, and a pulse width of femtoseconds (10?15 seconds) to picoseconds (10?12 seconds) and arranged such that the laser light can be focused on selected ones of the signal lines and/or color filters. The apparatus enables repairs to be effected on the display device during any one of several manufacturing test processes using only a single laser apparatus, without the need for additional or different repair devices for each test process.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: July 13, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung-Il Park, Yeong-Beom Lee, Kyung-Seop Kim, Yong-Eui Lee
  • Patent number: 7675590
    Abstract: An array substrate including a plurality of pixel regions transmitting light includes a switching element disposed in each of the pixel regions defined by gate and source lines, wherein the switching element is electrically connected to the gate and source lines, a pixel electrode electrically connected to the switching element, a first insulating layer disposed on the switching element, and a second insulating layer disposed under the first insulating layer, wherein a thickness of the second insulating layer is dependent on a peak wavelength of red light.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: March 9, 2010
    Assignee: Samsung Electronics, Co. Ltd
    Inventors: Han-Ju Lee, Kook-Hyun Choi, Kyung-Seop Kim, Yong-Eui Lee, Duck-Jung Lee, Jae-Hong Jeon, Yeong-Beom Lee, Jae-Hun Chung, Jang-Bog Ju
  • Patent number: 7595855
    Abstract: A liquid crystal display includes a first substrate, a first electrode formed on the first substrate, a passivation layer formed between the first substrate and the first electrode, a second substrate facing the first substrate, a second electrode formed on the second substrate, a columnar spacer formed between the second substrate and the first substrate, and a liquid crystal layer having liquid crystal molecules vertically aligned with respect to the first and second substrates, and formed between the first and second substrates. The passivation layer and the columnar spacer are made of substantially the same material at the same layer.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: September 29, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeong-Beom Lee, Kook-Hyun Choi, Kyung-Seop Kim, Yong-Eui Lee
  • Publication number: 20080096332
    Abstract: A gate insulating layer, an active layer and a data metal film are sequentially formed on a substrate. A first photoresist pattern having a relatively small thickness in a channel forming area with respect to a thickness of the photoresist pattern not in the channel forming area is formed on the data metal film. The data metal film and the active layer are sequentially etched using the first photoresist pattern. The active layer is etched using the first photoresist pattern. The first photoresist pattern is dry etched using a gas mixture including a sulfur hexafluoride gas and an oxygen gas to form a second photoresist pattern with an opening formed in the channel forming area. The data metal film is then etched using the second photoresist pattern. Dry, wet or acid cleaning procedures used within the manufacturing method reduce formation of stringers in the substrate.
    Type: Application
    Filed: May 9, 2007
    Publication date: April 24, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Duck-Jung LEE, Kyung-Seop KIM, Yong-Eui LEE, Myung-Il PARK, Dong-Chin LEE
  • Publication number: 20080090342
    Abstract: A method of manufacturing a thin film transistor (“TFT”) substrate includes forming a gate insulating film and an active layer on a substrate, forming a data metal layer including a first, second, and third metal layers on the active layer, forming a first photoresist pattern on the data metal layer, dry-etching the third metal layer by using the first photoresist pattern, simultaneously dry-etching the second and first metal layers by using the first photoresist pattern, dry-etching the active layer by using the first photoresist pattern, etching the first photoresist pattern to form a second photoresist pattern by which the channel region is removed and forming a source electrode and a drain electrode by dry-etching the channel region of the data metal layer by using the second photoresist pattern.
    Type: Application
    Filed: October 12, 2007
    Publication date: April 17, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Duck-Jung Lee, Dae-Ho Song, Kyung-Seop Kim, Yong-Eui Lee
  • Patent number: 7292222
    Abstract: An electrophoretic display and a method of manufacturing the electrophoretic display are provided. The electrophoretic display includes an lower electrode formed on an under layer, an lower electrode protection layer formed on the lower electrode, an insulating template formed on the lower electrode protection layer and having a plurality of holes of smaller size than the wavelength of visible rays region, a dielectric fluid filling the holes and having a color, a plurality of charged particles suspended in the dielectric fluid filling each of the plurality of holes having a color different from the color of the dielectric fluid, and an upper electrode formed on the insulating template in sequential order. Accordingly, a problem of agglomeration of the charged particles can be solved by the insulating template having holes of smaller size than the wavelength of visible rays region, and thus a reliable electrophoretic display emitting light of one color or natural colors is achieved.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: November 6, 2007
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong Deok Ahn, Kyung Soo Suh, Seung Youl Kang, Yong Eui Lee, Chul Am Kim, Meyoung Ju Joung, Mi Kyung Kim, Gun Hong Lee
  • Publication number: 20070235418
    Abstract: A substrate cutting method and a substrate cutting apparatus cut a substrate by simultaneously irradiating at least two laser beams having different wavelengths onto top and bottom surfaces of the substrate. The substrate cutting method includes preparing a mother substrate assembly having a thin film transistor (TFT) mother substrate and a color filter mother substrate, focusing at least two laser beams onto at least two different locations spaced apart from each other on a perpendicular relative to a surface of the mother substrate assembly simultaneously, and cutting the mother substrate assembly by the at least two different focused locations.
    Type: Application
    Filed: October 31, 2006
    Publication date: October 11, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Myung-il Park, Kyung-seop Kim, Yong-eui Lee, Dong-chin Lee
  • Publication number: 20070229735
    Abstract: A liquid crystal display (LCD) manufactured by a manufacturing method thereof may reduce a processing time by reducing the number of processing steps. The method for manufacturing an LCD includes forming red, green and blue color filters corresponding to pixels on a substrate, and forming black matrix patterns by irradiating a laser beam onto boundary portions of the red, green and blue color filters.
    Type: Application
    Filed: October 26, 2006
    Publication date: October 4, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Dong-Chin LEE, Myung-Il Park, Kyung-Seop Kim, Yong-Eui Lee
  • Publication number: 20070117280
    Abstract: Methods and apparatus for manufacturing an LCD substrate include forming a gate electrode of a pixel switching element on a base substrate, forming a gate insulating layer on the base substrate, forming a source electrode and a drain electrode of the switching element on the gate insulating layer, forming a protective insulating layer on the base substrate, radiating a laser beam onto the substrate so as to form a first contact hole exposing a small portion of the drain electrode, and forming the pixel electrode on the substrate such that it is electrically connected to the drain electrode through the first contact hole. The methods and apparatus both simplify the process of manufacturing an LCD substrate and make it more reliable.
    Type: Application
    Filed: September 27, 2006
    Publication date: May 24, 2007
    Inventors: Yeong-Beom Lee, Myung-Il Park, Kyung-Seop Kim, Yong-Eui Lee
  • Publication number: 20070081105
    Abstract: Apparatus and methods for repairing display devices of a type that include a first substrate having a plurality of signal lines formed thereon and/or a second substrate having a plurality of color filters formed thereon include a laser that radiates laser light having a wavelength in a range of from about 750 to about 850 nm, or alternatively, of from about 1000 to about 1100 nm, and a pulse width of femtoseconds (10?15 seconds) to picoseconds (10?12 seconds) and arranged such that the laser light can be focused on selected ones of the signal lines and/or color filters. The apparatus enables repairs to be effected on the display device during any one of several manufacturing test processes using only a single laser apparatus, without the need for additional or different repair devices for each test process.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 12, 2007
    Inventors: Myung-Il Park, Yeong-Beom Lee, Kyung-Seop Kim, Yong-Eui Lee
  • Publication number: 20070070287
    Abstract: A liquid crystal display includes a first substrate, a first electrode formed on the first substrate, a passivation layer formed between the first substrate and the first electrode, a second substrate facing the first substrate, a second electrode formed on the second substrate, a columnar spacer formed between the second substrate and the first substrate, and a liquid crystal layer having liquid crystal molecules vertically aligned with respect to the first and second substrates, and formed between the first and second substrates. The passivation layer and the columnar spacer are made of substantially the same material at the same layer.
    Type: Application
    Filed: July 25, 2006
    Publication date: March 29, 2007
    Inventors: Yeong-Beom Lee, Kook-Hyun Choi, Kyung-Seop Kim, Yong-Eui Lee
  • Publication number: 20070064166
    Abstract: An array substrate including a plurality of pixel regions transmitting light includes a switching element disposed in each of the pixel regions defined by gate and source lines, wherein the switching element is electrically connected to the gate and source lines, a pixel electrode electrically connected to the switching element, a first insulating layer disposed on the switching element, and a second insulating layer disposed under the first insulating layer, wherein a thickness of the second insulating layer is dependent on a peak wavelength of red light.
    Type: Application
    Filed: September 6, 2006
    Publication date: March 22, 2007
    Inventors: Han-Ju Lee, Kook-Hyun Choi, Kyung-Seop Kim, Yong-Eui Lee, Duck-Jung Lee, Jae-Hong Jeon, Yeong-Beom Lee, Jae-Hun Chung, Jang-Bog Ju
  • Patent number: 6980351
    Abstract: An electrophoretic display utilizing a phenomenon of electrophoresis is provided. The electrophoretic display includes an lower electrode located on an under layer, an lower electrode protection layer formed on the lower electrode, a plurality of microcapsules located on the lower electrode protection layer, coated or encapsulated in a micro size and not operating in an electric field, a particle and/or a fluid included within the microcapsule and having a single visual color, a charged particle existed among the plurality of microcapsules, having different visual colors, operating according to an electric field and suspended in a dielectric fluid, and an upper electrode protection layer and an upper electrode located on the plurality of microcapsule in sequential order. Accordingly, a reliable electrophoretic display with one color or natural colors is achieved.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: December 27, 2005
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong-Deok Ahn, Yong Eui Lee, Seung-Youl Kang, Kyung-Soo Suh