Patents by Inventor Sang Yeup Lee
Sang Yeup 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).
-
Publication number: 20230383040Abstract: The present disclosure relates to an ethylene alkyl acrylate-based copolymer ionomer and a preparation method thereof. Specifically, the present disclosure relates to a preparation method of an ionomer including (a) preparing a mixture by mixing an ethylene-based copolymer selected from an ethylene alkyl acrylate copolymer and/or an ethylene alkyl methacrylate copolymer having a melt index of 1 to 500 g/10 min as measured according to ASTM D1238, and an alkali metal salt; and (b) melting at 100 to 400° C. and stirring the mixture to introduce a substituent of an acrylic acid salt and/or a methacrylic acid salt into the copolymer.Type: ApplicationFiled: May 30, 2023Publication date: November 30, 2023Inventors: Sang Yeup Lee, Soon Min Kwon, Ki Yup Kim
-
Publication number: 20140238269Abstract: Disclosed is an optical film, and more particularly, an optical film having excellent mechanical physical properties and low vapor permeability.Type: ApplicationFiled: February 26, 2014Publication date: August 28, 2014Applicant: SK Innovation Co., Ltd.Inventors: Sang Yeup Lee, Hye Jin Lee, Jong Chae Kim, Seok Won Kim, Hyuk Jun Kim, Ki Yup Kim, Yong Gyun Cho
-
Publication number: 20140116292Abstract: The present invention relates to a cellulose acetate film used for optical compensation and a retardation enhancer used therein, and relates to a cellulose acetate film which has a high retardation value in the thickness direction (Rth).Type: ApplicationFiled: June 20, 2012Publication date: May 1, 2014Applicant: SK INNOVATION CO., LTD.Inventors: Won Yeob Kim, Min Joung Im, Seung Eon Lee, Myoung Lae Kim, Yong Gyun Cho, Sang Yeup Lee, Ki Yup Kim
-
Publication number: 20130302537Abstract: Provided is a cellulose acylate film. More particularly, the present invention relates to a cellulose acylate film having a low light scattering efficiency (haze).Type: ApplicationFiled: November 7, 2012Publication date: November 14, 2013Applicant: SK INNOVATION CO., LTD.Inventors: Sang Yeup Lee, Hye Jin Lee, Ki Yup Kim, Yong Gyun Cho
-
Patent number: 8421960Abstract: A liquid crystal display having an in-cell backlight and method of manufacturing the same is provided. The liquid crystal display includes a front substrate and a rear substrate opposite to each other. A color filter layer comprises a black matrix, a color filter and a common electrode on the front substrate. An array element comprises a plurality of gate lines and data lines having to cross each other, and a pixel electrode with the common electrode to generate electric field on the rear substrate. A liquid crystal layer is disposed between the color filter layer and the array element. A light source layer is disposed between the rear substrate and the array element and configured to supply light to the front substrate. At least one polarization plate is laminated on the light source layer.Type: GrantFiled: December 11, 2006Date of Patent: April 16, 2013Assignee: LG Display Co., Ltd.Inventors: Sang Yeup Lee, Hyung Seok Jang
-
Patent number: 8094280Abstract: An array substrate includes a gate line disposed along a first direction on a substrate; a gate electrode extending from the gate line; a gate insulating layer over the substrate, including the gate line; a first plane layer on first portions of the gate insulating layer; a semiconductor layer on second portions of the gate insulating layer and on the first plane layer; a second plane layer over the first plane layer; a data line; a source electrode and a drain electrode on the semiconductor layer and on the second plane layer, the source electrode extending from the data line; a passivation layer on the second plane layer, the source electrode, the drain electrode and the semiconductor layer; and a pixel electrode on the passivation layer, the pixel electrode electrically connected to the drain electrode via a first contact hole.Type: GrantFiled: June 7, 2010Date of Patent: January 10, 2012Assignee: LG Display Co., Ltd.Inventors: Jin Wuk Kim, Sang Yeup Lee
-
Patent number: 8089680Abstract: An electrophoretic display device is described. The device includes a substrate, first electrodes, an electrophoretic film having electrophoretic particles, and second electrodes. The substrate is has a plurality of pixel regions. First electrodes are disposed respectively on each pixel region, and include first patterns separated from one another and second patterns connected to the first patterns. The second electrode is disposed on the electrophoretic film. The area of one of the electrodes, opposing the other of the electrodes has apertures formed therein, reducing the contact area between the electrode and the electrophoretic film.Type: GrantFiled: January 4, 2011Date of Patent: January 3, 2012Assignee: LG Display Co., Ltd.Inventors: Young Sik Jeong, Sang Yeup Lee
-
Publication number: 20110096389Abstract: An electrophoretic display device is described. The device includes a substrate, first electrodes, an electrophoretic film having electrophoretic particles, and second electrodes. The substrate is has a plurality of pixel regions. First electrodes are disposed respectively on each pixel region, and include first patterns separated from one another and second patterns connected to the first patterns. The second electrode is disposed on the electrophoretic film. The area of one of the electrodes, opposing the other of the electrodes has apertures formed therein, reducing the contact area between the electrode and the electrophoretic film.Type: ApplicationFiled: January 4, 2011Publication date: April 28, 2011Applicant: LG Display Co., Ltd.Inventors: Young Sik Jeong, Sang Yeup Lee
-
Patent number: 7924386Abstract: A liquid crystal display device includes a gate line on a substrate; a data line defining a pixel region by crossing the gate line; a thin film transistor formed at a crossing position between the gate line and the data line; a passivation layer protecting the thin film transistor; a pixel electrode connected with the thin film transistor; a common electrode generating an electric field with the pixel electrode; and a plurality of grooves on the passivation layer, wherein at least one of the pixel electrode and the common electrode is arranged at intervals in the pixel region, and the grooves are formed at intervals on the passivation layer disposed between the at least one of the pixel electrode and the common electrode arranged at intervals in the pixel region.Type: GrantFiled: December 22, 2008Date of Patent: April 12, 2011Assignee: LG Display Co., Ltd.Inventor: Sang Yeup Lee
-
Patent number: 7884993Abstract: An electrophoretic display device is described. The device includes a substrate, first electrodes, an electrophoretic film having electrophoretic particles, and second electrodes. The substrate is has a plurality of pixel regions. First electrodes are disposed respectively on each pixel region, and include first patterns separated from one another and second patterns connected to the first patterns. The second electrode is disposed on the electrophoretic film. The area of one of the electrodes, opposing the other of the electrodes has apertures formed therein, reducing the contact area between the electrode and the electrophoretic film.Type: GrantFiled: November 17, 2006Date of Patent: February 8, 2011Assignee: LG Display Co., Ltd.Inventors: Young Sik Jeong, Sang Yeup Lee
-
Patent number: 7808472Abstract: A liquid crystal display device and a driving method thereof are provided. The liquid crystal display includes a data driver that is operative to supply data to the data lines. The data have the same polarity for the liquid crystal cells that are adjacent horizontally and opposite polarities for the liquid crystal cells that are adjacent vertically. A gate driver is operative to supply scan signals to the gate lines. The scan signals have different swing widths from each other in accordance with a polarity of the data. The switch devices include a plurality of first switch devices and a plurality of second switch devices. The first switch devices are connected to the (n?1)th (where n is a positive integer of not less than 2) gate line and the second switch devices are connected to the nth gate line.Type: GrantFiled: November 21, 2006Date of Patent: October 5, 2010Assignee: LG. Display Co., Ltd.Inventors: Jong Jin Park, Sang Yeup Lee, Seong Hun Jeong
-
Publication number: 20100238392Abstract: An array substrate includes a gate line disposed along a first direction on a substrate; a gate electrode extending from the gate line; a gate insulating layer over the substrate, including the gate line; a first plane layer on first portions of the gate insulating layer; a semiconductor layer on second portions of the gate insulating layer and on the first plane layer; a second plane layer over the first plane layer; a data line; a source electrode and a drain electrode on the semiconductor layer and on the second plane layer, the source electrode extending from the data line; a passivation layer on the second plane layer, the source electrode, the drain electrode and the semiconductor layer; and a pixel electrode on the passivation layer, the pixel electrode electrically connected to the drain electrode via a first contact hole.Type: ApplicationFiled: June 7, 2010Publication date: September 23, 2010Inventors: Jin Wuk Kim, Sang Yeup Lee
-
Patent number: 7746444Abstract: Provided is an array substrate, an LCD device having the same, and a manufacturing method thereof using IPP. The method includes forming a gate line and a gate electrode on a substrate using a first mold, forming a gate insulating layer over the substrate and the gate line, forming a first plane layer on first portions of the gate insulating layer, forming a semiconductor layer on second portions of the gate insulating layer using a second mold, forming a second plane layer over the first plane layer, forming a data line on the second plane layer and a source electrode and a drain electrode on the semiconductor layer using a third mold, forming a passivation layer having a contact hole using a fourth mold, and forming a pixel electrode on the passivation layer using a fifth mold, the pixel electrode electrically connected to the drain electrode via the contact hole.Type: GrantFiled: May 23, 2007Date of Patent: June 29, 2010Assignee: LG Display Co., Ltd.Inventors: Jin Wuk Kim, Sang Yeup Lee
-
Publication number: 20100007836Abstract: A liquid crystal display device includes a gate line on a substrate; a data line defining a pixel region by crossing the gate line; a thin film transistor formed at a crossing position between the gate line and the data line; a passivation layer protecting the thin film transistor; a pixel electrode connected with the thin film transistor; a common electrode generating an electric field with the pixel electrode; and a plurality of grooves on the passivation layer, wherein at least one of the pixel electrode and the common electrode is arranged at intervals in the pixel region, and the grooves are formed at intervals on the passivation layer disposed between the at least one of the pixel electrode and the common electrode arranged at intervals in the pixel region.Type: ApplicationFiled: December 22, 2008Publication date: January 14, 2010Applicant: LG DISPLAY CO., LTD.Inventor: Sang Yeup Lee
-
Publication number: 20070296884Abstract: Provided is an array substrate, an LCD device having the same, and a manufacturing method thereof using IPP. The method includes forming a gate line and a gate electrode on a substrate using a first mold, forming a gate insulating layer over the substrate and the gate line, forming a first plane layer on first portions of the gate insulating layer, forming a semiconductor layer on second portions of the gate insulating layer using a second mold, forming a second plane layer over the first plane layer, forming a data line on the second plane layer and a source electrode and a drain electrode on the semiconductor layer using a third mold, forming a passivation layer having a contact hole using a fourth mold, and forming a pixel electrode on the passivation layer using a fifth mold, the pixel electrode electrically connected to the drain electrode via the contact hole.Type: ApplicationFiled: May 23, 2007Publication date: December 27, 2007Applicant: LG.PHILIPS LCD CO., LTD.Inventors: Jin Wuk Kim, Sang Yeup Lee
-
Publication number: 20070279360Abstract: A liquid crystal display device and a driving method thereof are provided. The liquid crystal display includes a data driver that is operative to supply data to the data lines. The data have the same polarity for the liquid crystal cells that are adjacent horizontally and opposite polarities for the liquid crystal cells that are adjacent vertically. A gate driver is operative to supply scan signals to the gate lines. The scan signals have different swing widths from each other in accordance with a polarity of the data. The switch devices include a plurality of first switch devices and a plurality of second switch devices. The first switch devices are connected to the (n-1)th (where n is a positive integer of not less than 2) gate line and the second switch devices are connected to the nth gate line.Type: ApplicationFiled: November 21, 2006Publication date: December 6, 2007Inventors: Jong Jin Park, Sang Yeup Lee, Seong Hun Jeong
-
Publication number: 20070229429Abstract: A liquid crystal display device includes data lines and gate lines on a substrate intersecting each other to define a plurality of pixel areas; a plurality of liquid crystal cells formed in respective pixel areas; a data driver that generates a positive and a negative data signals, the data driver supplies desired data signals to the data lines; a gate driver that supplies a scan signal to the gate lines, wherein a voltage level of the scan signal is changed in accordance with a polarity of the data signal; and a plurality of thin film transistors formed at respective intersections of gate lines and data lines, the thin film transistor supplying the data signal to the liquid crystal cell in response to the scan signal.Type: ApplicationFiled: December 5, 2006Publication date: October 4, 2007Inventors: Sang Hee Yu, Sang Yeup Lee
-
Publication number: 20070146581Abstract: A liquid crystal display having an in-cell backlight and method of manufacturing the same is provided. The liquid crystal display includes a front substrate and a rear substrate opposite to each other. A color filter layer comprises a black matrix, a color filter and a common electrode on the front substrate. An array element comprises a plurality of gate lines and data lines having to cross each other, and a pixel electrode with the common electrode to generate electric field on the rear substrate. A liquid crystal layer is disposed between the color filter layer and the array element. A light source layer is disposed between the rear substrate and the array element and configured to supply light to the front substrate. At least one polarization plate is laminated on the light source layer.Type: ApplicationFiled: December 11, 2006Publication date: June 28, 2007Inventors: Sang Yeup Lee, Hyung Seok Jang