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).
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Patent number: 9417499Abstract: 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: GrantFiled: March 25, 2011Date of Patent: August 16, 2016Assignee: LG Display Co., Ltd.Inventors: Chul Hwan Kim, Yong Eui Lee
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Patent number: 8830562Abstract: 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: GrantFiled: March 25, 2011Date of Patent: September 9, 2014Assignee: LG Display Co., Ltd.Inventors: Chul Hwan Kim, Yong Eui Lee
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Publication number: 20130114126Abstract: 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: ApplicationFiled: March 25, 2011Publication date: May 9, 2013Inventors: Chul Hwan Kim, Yong Eui Lee
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Publication number: 20130114125Abstract: 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: ApplicationFiled: March 25, 2011Publication date: May 9, 2013Inventors: Chul Hwan Kim, Yong Eui Lee
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Patent number: 7889419Abstract: 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: GrantFiled: September 17, 2007Date of Patent: February 15, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Seong Deok Ahn, Kyung Soo Suh, Seung Youl Kang, Yong Eui Lee, Chul Am Kim, Meyoung Ju Joung, Mi Kyung Kim, Gun Hong Lee
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Patent number: 7803673Abstract: 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: GrantFiled: October 12, 2007Date of Patent: September 28, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Duck-Jung Lee, Dae-Ho Song, Kyung-Seop Kim, Yong-Eui Lee
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Publication number: 20100194672Abstract: 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: ApplicationFiled: September 19, 2008Publication date: August 5, 2010Applicant: IMAGE & MATERIALS, INC.Inventors: Chul Hwan Kim, Yong Eui Lee
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Patent number: 7755380Abstract: 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: GrantFiled: October 6, 2006Date of Patent: July 13, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Myung-Il Park, Yeong-Beom Lee, Kyung-Seop Kim, Yong-Eui Lee
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Patent number: 7675590Abstract: 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: GrantFiled: September 6, 2006Date of Patent: March 9, 2010Assignee: Samsung Electronics, Co. LtdInventors: 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
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Patent number: 7595855Abstract: 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: GrantFiled: July 25, 2006Date of Patent: September 29, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Yeong-Beom Lee, Kook-Hyun Choi, Kyung-Seop Kim, Yong-Eui Lee
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Publication number: 20080096332Abstract: 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: ApplicationFiled: May 9, 2007Publication date: April 24, 2008Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Duck-Jung LEE, Kyung-Seop KIM, Yong-Eui LEE, Myung-Il PARK, Dong-Chin LEE
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Publication number: 20080090342Abstract: 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: ApplicationFiled: October 12, 2007Publication date: April 17, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Duck-Jung Lee, Dae-Ho Song, Kyung-Seop Kim, Yong-Eui Lee
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Patent number: 7292222Abstract: 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: GrantFiled: October 14, 2003Date of Patent: November 6, 2007Assignee: Electronics and Telecommunications Research InstituteInventors: Seong Deok Ahn, Kyung Soo Suh, Seung Youl Kang, Yong Eui Lee, Chul Am Kim, Meyoung Ju Joung, Mi Kyung Kim, Gun Hong Lee
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Publication number: 20070235418Abstract: 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: ApplicationFiled: October 31, 2006Publication date: October 11, 2007Applicant: Samsung Electronics Co., Ltd.Inventors: Myung-il Park, Kyung-seop Kim, Yong-eui Lee, Dong-chin Lee
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Publication number: 20070229735Abstract: 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: ApplicationFiled: October 26, 2006Publication date: October 4, 2007Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Dong-Chin LEE, Myung-Il Park, Kyung-Seop Kim, Yong-Eui Lee
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Publication number: 20070117280Abstract: 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: ApplicationFiled: September 27, 2006Publication date: May 24, 2007Inventors: Yeong-Beom Lee, Myung-Il Park, Kyung-Seop Kim, Yong-Eui Lee
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Publication number: 20070081105Abstract: 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: ApplicationFiled: October 6, 2006Publication date: April 12, 2007Inventors: Myung-Il Park, Yeong-Beom Lee, Kyung-Seop Kim, Yong-Eui Lee
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Publication number: 20070070287Abstract: 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: ApplicationFiled: July 25, 2006Publication date: March 29, 2007Inventors: Yeong-Beom Lee, Kook-Hyun Choi, Kyung-Seop Kim, Yong-Eui Lee
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Publication number: 20070064166Abstract: 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: ApplicationFiled: September 6, 2006Publication date: March 22, 2007Inventors: 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
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Patent number: 6980351Abstract: 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: GrantFiled: December 31, 2002Date of Patent: December 27, 2005Assignee: Electronics and Telecommunications Research InstituteInventors: Seong-Deok Ahn, Yong Eui Lee, Seung-Youl Kang, Kyung-Soo Suh