Patents by Inventor Sang Hee Yu
Sang Hee Yu 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: 20180081242Abstract: A display device comprising: a first substrate, a second substrate facing the first substrate, a color conversion layer disposed on one surface of the second substrate and including quantum dots; a first circular polarizer disposed on the color conversion layer and a second circular polarizer disposed on either one surface of the first substrate facing one surface of the second substrate or the other surface opposed to the one surface of the first substrate.Type: ApplicationFiled: August 28, 2017Publication date: March 22, 2018Inventors: Hyung Guen YOON, Jae Hong PARK, Dong Han SONG, Ji Yun PARK, Sang Hee YU, Kyung Seon TAK
-
Patent number: 9910312Abstract: A liquid crystal display is provided. A liquid crystal display comprising a first substrate which comprises a display area and a non-display area, a second substrate which faces the first substrate, a sealing member which is disposed in the non-display area between the first substrate and the second substrate, wherein the first substrate comprises a light-shielding pattern, a column spacer which is protruded from the light-shielding pattern toward the second substrate to maintain an interval between the first substrate and the second substrate, an opening which is disposed in the light-shielding pattern, and overlapping the sealing member.Type: GrantFiled: February 16, 2016Date of Patent: March 6, 2018Assignee: Samsung Display Co., Ltd.Inventors: Sang Hee Yu, Byung Chul Kim, Won Gap Yoon, Jae Hong Park, Young Joo Jeon, Kyung Seon Tak
-
Patent number: 9772532Abstract: Disclosed is an electrostatic discharge (ESD) protection circuit. The ESD protection circuit includes a transistor structure having at least five thin film transistors (TFTs), said transistor structure configured in view of changes in operating characteristics that depend on a channel length of a back channel etched (BCE) type oxide transistor.Type: GrantFiled: March 10, 2015Date of Patent: September 26, 2017Assignee: LG Display Co., Ltd.Inventors: Sang Woon Kim, Sang Hee Yu, Hoon Jeong
-
Publication number: 20170146834Abstract: A display device includes a first base substrate in which a display area and a non-display area are defined, a first common electrode on the first base substrate in the non-display area, a light-blocking member which is disposed on the first common electrode and in which an opening exposing a part of the first common electrode is defined, a second base substrate separated from the first base substrate and facing the first base substrate, and a sealing member which is interposed between the first base substrate and the second base substrate, is disposed in the non-display area, surrounds the display area, and overlaps at least a part of the first common electrode, where the sealing member includes at least one light-blocking sealant and at least one light-transmitting sealant stacked on each other, where the light-transmitting sealant has a lower optical density than that of the light-blocking sealant.Type: ApplicationFiled: June 1, 2016Publication date: May 25, 2017Inventors: Kyung Seon TAK, Byung Chul KIM, Jae Hong PARK, Sang Hee YU, Won Gap YOON, Young Joo JEON
-
Patent number: 9632365Abstract: A display device includes: a first panel including a common voltage wire on a first substrate, and a light blocking layer which is on the common voltage wire and exposes a portion of the common voltage wire, a second panel facing the first panel and including a common electrode on a second substrate; and a sealant between the first and second panels and electrically connecting the common electrode of the second panel and the common voltage wire of the first panel to each other. The sealant includes a first sealing portion having a first color and a second sealing portion having a second color different from the first color of the first sealing portion. The second sealing portion overlaps the exposed portion of the common voltage wire of the first panel and electrically connects the common electrode of the second panel to the common voltage wire.Type: GrantFiled: January 19, 2016Date of Patent: April 25, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Won-Gap Yoon, Byung-Chul Kim, Jae Hong Park, Sang Hee Yu, Young Joo Jeon, Kyung Seon Tak
-
Publication number: 20170076683Abstract: Present invention relates to a display device and a driving method thereof. In particular, the present invention is to provide a display device and a driving method thereof, which block at least one of scan signals output from gate lines according to an enable signal.Type: ApplicationFiled: March 10, 2015Publication date: March 16, 2017Applicant: LG DISPLAY CO., LTD.Inventors: Bo Sun LEE, Hun JEOUNG, Sang Hee YU, Sung Hyun CHO, Sung Wook CHANG
-
Publication number: 20170052405Abstract: A liquid crystal display is provided. A liquid crystal display comprising a first substrate which comprises a display area and a non-display area, a second substrate which faces the first substrate, a sealing member which is disposed in the non-display area between the first substrate and the second substrate, wherein the first substrate comprises a light-shielding pattern, a column spacer which is protruded from the light-shielding pattern toward the second substrate to maintain an interval between the first substrate and the second substrate, an opening which is disposed in the light-shielding pattern, and overlapping the sealing member.Type: ApplicationFiled: February 16, 2016Publication date: February 23, 2017Inventors: Sang Hee YU, Byung Chul KIM, Won Gap YOON, Jae Hong PARK, Young Joo JEON, Kyung Seon TAK
-
Publication number: 20170052635Abstract: Present invention is related to a display device and a driving method thereof, and particularly, to a display device and a driving method thereof, which control an output timing of a scan signal output to gate lines by using two or more external start signals having different timings.Type: ApplicationFiled: September 9, 2016Publication date: February 23, 2017Inventors: Sang Hee YU, Hun JEOUNG, Sung Hyun CHO, Bo Sun LEE, Sung Wook CHANG
-
Publication number: 20170025068Abstract: Present invention is related to a display device and a driving method thereof. In particularly, the present invention is to provide a display device and a driving method thereof, in which a data driver driven at a low frequency which is capable of inverting a polarity of a data voltage in each frame.Type: ApplicationFiled: March 10, 2015Publication date: January 26, 2017Applicant: LG DISPLAY CO., LTD.Inventors: Hun JEOUNG, Sang Hee YU, Sung Hyun CHO, Bo Sun LEE, Sung Wook CHANG
-
Publication number: 20160357042Abstract: A display device includes: a first panel including a common voltage wire on a first substrate, and a light blocking layer which is on the common voltage wire and exposes a portion of the common voltage wire, a second panel facing the first panel and including a common electrode on a second substrate; and a sealant between the first and second panels and electrically connecting the common electrode of the second panel and the common voltage wire of the first panel to each other. The sealant includes a first sealing portion having a first color and a second sealing portion having a second color different from the first color of the first sealing portion. The second sealing portion overlaps the exposed portion of the common voltage wire of the first panel and electrically connects the common electrode of the second panel to the common voltage wire.Type: ApplicationFiled: January 19, 2016Publication date: December 8, 2016Inventors: Won-Gap Yoon, Byung-Chul Kim, Jae Hong Park, Sang Hee Yu, Young Joo Jeon, Kyung Seon Tak
-
Patent number: 9459495Abstract: Provided is a liquid crystal display that includes: a first substrate; a thin film transistor disposed on the first substrate; a first electrode connected to the thin film transistor; and a first alignment layer disposed on the first electrode. The first alignment layer is formed by polymerizing a diamine and at least one of cyclobutane dianhydride (CBDA) and a cyclobutane dianhydride (CBDA) derivative. A decomposition efficiency representing a change in imidization ratio included before and after light exposure of the first alignment layer is in a range of 10% to 30%.Type: GrantFiled: June 6, 2014Date of Patent: October 4, 2016Assignee: Samsung Display Co., Ltd.Inventors: Suk Hoon Kang, Yeong Rong Park, Sang Hee Yu, Mi Hwa Lee, Jun Woo Lee, Baek Kyun Jeon, Pil Ho Huh
-
Publication number: 20150255449Abstract: Disclosed is an electrostatic discharge (ESD) protection circuit. The ESD protection circuit includes a transistor structure having at least five thin film transistors (TFTs), said transistor structure configured in view of changes in operating characteristics that depend on a channel length of a back channel etched (BCE) type oxide transistor.Type: ApplicationFiled: March 10, 2015Publication date: September 10, 2015Inventors: Sang Woon Kim, Sang Hee Yu, Hoon Jeong
-
Publication number: 20150160515Abstract: Provided is a liquid crystal display that includes: a first substrate; a thin film transistor disposed on the first substrate; a first electrode connected to the thin film transistor; and a first alignment layer disposed on the first electrode. The first alignment layer is formed by polymerizing a diamine and at least one of cyclobutane dianhydride (CBDA) and a cyclobutane dianhydride (CBDA) derivative. A decomposition efficiency representing a change in imidization ratio included before and after light exposure of the first alignment layer is in a range of 10% to 30%.Type: ApplicationFiled: June 6, 2014Publication date: June 11, 2015Inventors: Suk Hoon KANG, Yeong Rong PARK, Sang Hee YU, Mi Hwa LEE, Jun Woo LEE, Baek Kyun JEON, Pil Ho HUH
-
Patent number: 8551581Abstract: A liquid crystal display includes: a first substrate and an opposing second substrate; an alignment layer formed on the first substrate and the second substrate; and a liquid crystal layer interposed between the first substrate and the second substrate. The alignment layer includes a copolymer including a dianhydride monomer and a diamine monomer.Type: GrantFiled: July 13, 2011Date of Patent: October 8, 2013Assignee: Samsung Display Co., Ltd.Inventors: Ho Yun Byun, Duck Jong Suh, Won-Gap Yoon, Na-Young Shin, Sang Hee Yu
-
Patent number: 8488093Abstract: The present invention relates to an array substrate for a liquid crystal display (LCD) and a manufacturing method thereof. The array substrate comprises gate lines crossing data lines on a transparent substrate to define pixel areas; thin film transistors connected to a gate line and a data line; pixel electrodes overlapping the gate and data lines, the pixel electrodes being connected to one of the thin film transistors through a contact hole, and stretched over two adjacent pixel areas to form an electric field; and storage electrodes overlapping with the gate lines, connected to a pixel electrode through a contact hole, wherein the storage electrodes maintain an intensity of the electric field formed by the pixel electrodes at a level equal to or higher than a predetermined level.Type: GrantFiled: December 12, 2006Date of Patent: July 16, 2013Assignee: LG Display Co., Ltd.Inventor: Sang Hee Yu
-
Patent number: 8441015Abstract: A method for fabricating an LCD device includes providing first and second substrates; forming an active layer on the first substrate and forming first and second ohmic contact layers on the active layer; forming a first insulation film on the first substrate; forming a gate electrode on the first substrate; forming a second insulation film on the first substrate; forming a pixel electrode on the first substrate; forming a third insulation film on the first substrate; removing a portion of the first to third insulation film to form first and second contact holes, wherein the first contact hole exposes a portion of the first ohmic contact layer and the second contact hole exposes a portion of the second ohmic contact layer; forming a source electrode electrically connected with the first ohmic contact layer within the first contact hole; forming a drain electrode electrically connected with the second ohmic contact layer and the pixel electrode within the second contact hole; and attaching the first and secondType: GrantFiled: December 15, 2005Date of Patent: May 14, 2013Assignee: LG Display Co., Ltd.Inventors: Sang Hee Yu, Sang Chul Han
-
Publication number: 20120206681Abstract: A liquid crystal display includes: a first substrate and an opposing second substrate; an alignment layer formed on the first substrate and the second substrate; and a liquid crystal layer interposed between the first substrate and the second substrate. The alignment layer includes a copolymer including a dianhydride monomer and a diamine monomer.Type: ApplicationFiled: July 13, 2011Publication date: August 16, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ho Yun BYUN, Duck Jong SUH, Won-Gap YOON, Na-Young SHIN, Sang Hee YU
-
Patent number: 8081147Abstract: A liquid crystal display device having optical sensors, for sensing a touch, embedded in a liquid crystal panel to improve touch sensitivity is disclosed. The liquid crystal display device includes pixel regions spaced from each other on a first substrate, gate lines formed to separate the pixel regions in a first direction, driving voltage lines parallel to the gate lines, data lines formed between the pixel regions in a second direction intersecting the first direction, storage lines parallel to the driving voltage lines, read-out lines separated from neighboring data lines by one pixel region in the second direction, display transistors formed at intersections of the gate and data lines, pixel electrodes formed in the pixel regions, output switching transistors formed between the gate and read-out lines, capacitors formed between the output switching transistors and storage lines, and photo sensing transistors formed on the output switching transistors and storage lines.Type: GrantFiled: October 23, 2008Date of Patent: December 20, 2011Assignee: LG Display Co., Ltd.Inventors: Kyung Eon Lee, Sang Hee Yu, Jae Sung Yu, Deuk Su Lee, Bu Yeol Lee
-
Patent number: 7894010Abstract: The present invention relates to a liquid crystal display panel and a method for fabricating the same which can improve aperture and prevent a brightness deviation between lots. The liquid crystal display panel includes a thin film transistor formed on a lower substrate and connected to a gate line and a data line, a pixel electrode connected to a drain electrode of the thin film transistor, a common electrode forming a horizontal electric field with the pixel electrode, a connection electrode overlapped with and connected to the data line, and a black matrix on an upper substrate opposite to the lower substrate for forming a vertical electric field with the connection electrode.Type: GrantFiled: October 29, 2008Date of Patent: February 22, 2011Assignee: LG Display Co., Ltd.Inventors: Sang Hee Yu, Joon Dong Lee, Deuk Su Lee
-
Publication number: 20090295692Abstract: A liquid crystal display device having optical sensors, for sensing a touch, embedded in a liquid crystal panel to improve touch sensitivity is disclosed. The liquid crystal display device includes pixel regions spaced from each other on a first substrate, gate lines formed to separate the pixel regions in a first direction, driving voltage lines parallel to the gate lines, data lines formed between the pixel regions in a second direction intersecting the first direction, storage lines parallel to the driving voltage lines, read-out lines separated from neighboring data lines by one pixel region in the second direction, display transistors formed at intersections of the gate and data lines, pixel electrodes formed in the pixel regions, output switching transistors formed between the gate and read-out lines, capacitors formed between the output switching transistors and storage lines, and photo sensing transistors formed on the output switching transistors and storage lines.Type: ApplicationFiled: October 23, 2008Publication date: December 3, 2009Inventors: Kyung Eon Lee, Sang Hee Yu, Jae Sung Yu, Deuk Su Lee, Bu Yeol Lee