Patents by Inventor Kyung-Han Seo
Kyung-Han Seo 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: 9680122Abstract: An organic light emitting display device may include: a cell array comprising gate lines and data lines intersecting each other on a substrate so as to define a plurality of pixel areas, a plurality of thin film transistors formed at intersections between the gate lines and the data lines to correspond to the plurality of pixel areas, and a protective film evenly formed over the substrate to cover the thin film transistors; a plurality of first electrodes formed such that portions of an metal oxide layer corresponding to emission areas of the respective pixel areas, is made conductive, the metal oxide layer evenly disposed on the protective film; a bank constituting the remaining portion of the metal oxide layer in which the first electrodes are not formed and formed so as to have insulating properties; an emission layer formed over the metal oxide layer; and a second electrode formed on the emission layer so as to face the first electrodes.Type: GrantFiled: February 6, 2017Date of Patent: June 13, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Hyun-Sik Seo, Jong-Woo Kim, Kyung-Han Seo
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Publication number: 20170149010Abstract: An organic light emitting display device may include: a cell array comprising gate lines and data lines intersecting each other on a substrate so as to define a plurality of pixel areas, a plurality of thin film transistors formed at intersections between the gate lines and the data lines to correspond to the plurality of pixel areas, and a protective film evenly formed over the substrate to cover the thin film transistors; a plurality of first electrodes formed such that portions of an metal oxide layer corresponding to emission areas of the respective pixel areas, is made conductive, the metal oxide layer evenly disposed on the protective film; a bank constituting the remaining portion of the metal oxide layer in which the first electrodes are not formed and formed so as to have insulating properties; an emission layer formed over the metal oxide layer; and a second electrode formed on the emission layer so as to face the first electrodes.Type: ApplicationFiled: February 6, 2017Publication date: May 25, 2017Inventors: Hyun-Sik Seo, Jong-Woo Kim, Kyung-Han Seo
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Patent number: 9601556Abstract: An organic light emitting display device includes a driving thin film transistor (TFT), the driving thin film TFT includes a lower gate, a source, and a drain on a substrate and on the same layer; a first gate insulating layer covering the lower gate, the source, and the drain; an active layer on the first gate insulating layer; a conductive line contacting the source and the drain; a second gate insulating layer on the active layer; and an upper gate on the second gate insulating layer, wherein the lower gate of the driving TFT is a light shield that blocks light from being irradiated onto the active layer, and the lower gate and the source include the same metal.Type: GrantFiled: March 1, 2016Date of Patent: March 21, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Hyun Sik Seo, Jong Sik Shim, Kyung Han Seo, Yong Ho Choi, Hyo Jin Park
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Patent number: 9601550Abstract: An organic light emitting display device may include: a cell array comprising gate lines and data lines intersecting each other on a substrate so as to define a plurality of pixel areas, a plurality of thin film transistors formed at intersections between the gate lines and the data lines to correspond to the plurality of pixel areas, and a protective film evenly formed over the substrate to cover the thin film transistors; a plurality of first electrodes formed such that portions of an metal oxide layer corresponding to emission areas of the respective pixel areas, is made conductive, the metal oxide layer evenly disposed on the protective film; a bank constituting the remaining portion of the metal oxide layer in which the first electrodes are not formed and formed so as to have insulating properties; an emission layer formed over the metal oxide layer; and a second electrode formed on the emission layer so as to face the first electrodes.Type: GrantFiled: May 30, 2014Date of Patent: March 21, 2017Assignee: LG Display Co., Ltd.Inventors: Hyun-Sik Seo, Jong-Woo Kim, Kyung-Han Seo
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Publication number: 20160181344Abstract: An organic light emitting display device includes a driving thin film transistor (TFT), the driving thin film TFT includes a lower gate, a source, and a drain on a substrate and on the same layer; a first gate insulating layer covering the lower gate, the source, and the drain; an active layer on the first gate insulating layer; a conductive line contacting the source and the drain; a second gate insulating layer on the active layer; and an upper gate on the second gate insulating layer, wherein the lower gate of the driving TFT is a light shield that blocks light from being irradiated onto the active layer, and the lower gate and the source include the same metal.Type: ApplicationFiled: March 1, 2016Publication date: June 23, 2016Inventors: Hyun Sik SEO, Jong Sik SHIM, Kyung Han SEO, Yong Ho CHOI, Hyo Jin PARK
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Patent number: 9318612Abstract: An array substrate includes: a substrate; a thin film transistor including a gate electrode, an oxide semiconductor layer and source and drain electrodes, wherein a first insulating layer of an inorganic insulating material is disposed between the gate electrode and the oxide semiconductor layer, and wherein a second insulating layer of an inorganic insulating material is disposed between the oxide semiconductor layer and the source and drain electrodes; a passivation layer on the thin film transistor; a first electrode on the passivation layer in the pixel region; and a first hydrogen absorbing layer on at least one of top and bottom surfaces of the first insulating layer, top and bottom surfaces of the second insulating layer and top and bottom surfaces of the passivation layer, the first hydrogen absorbing layer including plurality of particles spaced apart from each other and including one of nickel, palladium and platinum.Type: GrantFiled: November 11, 2014Date of Patent: April 19, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Hyun-Sik Seo, Kyung-Han Seo
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Patent number: 9299761Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a switching thin film transistor (TFT) that includes a lower gate, a source, and a drain formed on a substrate and on the same layer, a first gate insulating layer formed to cover the lower gate, the source, and the drain, an active layer formed on the first gate insulating layer, a conductive line formed to contact the source and the drain, a second gate insulating layer formed on the active layer, and an upper gate formed on the second gate insulating layer. The lower gate of the switching TFT is a light shield that blocks light from being irradiated onto the active layer.Type: GrantFiled: November 5, 2014Date of Patent: March 29, 2016Assignee: LG Display Co., Ltd.Inventors: Hyun Sik Seo, Jong Sik Shim, Kyung Han Seo, Yong Ho Choi, Hyo Jin Park
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Publication number: 20150187860Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a switching thin film transistor (TFT) that includes a lower gate, a source, and a drain formed on a substrate and on the same layer, a first gate insulating layer formed to cover the lower gate, the source, and the drain, an active layer formed on the first gate insulating layer, a conductive line formed to contact the source and the drain, a second gate insulating layer formed on the active layer, and an upper gate formed on the second gate insulating layer. The lower gate of the switching TFT is a light shield that blocks light from being irradiated onto the active layer.Type: ApplicationFiled: November 5, 2014Publication date: July 2, 2015Inventors: Hyun Sik SEO, Jong Sik SHIM, Kyung Han SEO, Yong Ho CHOI, Hyo Jin PARK
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Publication number: 20150144943Abstract: An array substrate includes: a substrate; a thin film transistor including a gate electrode, an oxide semiconductor layer and source and drain electrodes, wherein a first insulating layer of an inorganic insulating material is disposed between the gate electrode and the oxide semiconductor layer, and wherein a second insulating layer of an inorganic insulating material is disposed between the oxide semiconductor layer and the source and drain electrodes; a passivation layer on the thin film transistor; a first electrode on the passivation layer in the pixel region; and a first hydrogen absorbing layer on at least one of top and bottom surfaces of the first insulating layer, top and bottom surfaces of the second insulating layer and top and bottom surfaces of the passivation layer, the first hydrogen absorbing layer including plurality of particles spaced apart from each other and including one of nickel, palladium and platinum.Type: ApplicationFiled: November 11, 2014Publication date: May 28, 2015Inventors: Hyun-Sik SEO, Kyung-Han SEO
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Publication number: 20140353643Abstract: An organic light emitting display device may include: a cell array comprising gate lines and data lines intersecting each other on a substrate so as to define a plurality of pixel areas, a plurality of thin film transistors formed at intersections between the gate lines and the data lines to correspond to the plurality of pixel areas, and a protective film evenly formed over the substrate to cover the thin film transistors; a plurality of first electrodes formed such that portions of an metal oxide layer corresponding to emission areas of the respective pixel areas, is made conductive, the metal oxide layer evenly disposed on the protective film; a bank constituting the remaining portion of the metal oxide layer in which the first electrodes are not formed and formed so as to have insulating properties; an emission layer formed over the metal oxide layer; and a second electrode formed on the emission layer so as to face the first electrodes.Type: ApplicationFiled: May 30, 2014Publication date: December 4, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Hyun-Sik Seo, Jong-Woo Kim, Kyung-Han Seo
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Patent number: 8264644Abstract: A color filter substrate for an in-plane switching mode liquid crystal display device includes a first rear side electrode on a first surface of a substrate and formed of a first transparent conductive material including zinc oxide (ZnO) and at least two compounds having second or fourth valence, the first rear side electrode having a first thickness; a black matrix having a lattice shape and a plurality of openings in the lattice shape, the black matrix disposed on a second surface, which is opposite to the first surface, of the substrate; a color filter layer in the plurality of openings; and an overcoat layer on the black matrix and the color filter layer.Type: GrantFiled: October 27, 2009Date of Patent: September 11, 2012Assignee: LG Display Co., Ltd.Inventors: Kyung-Han Seo, Chul-Woo Kim, Yong-Woo Yoo, Mun-Gi Park, Ho-Su Kim
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Publication number: 20100141876Abstract: A color filter substrate for an in-plane switching mode liquid crystal display device includes a first rear side electrode on a first surface of a substrate and formed of a first transparent conductive material including zinc oxide (ZnO) and at least two compounds having second or fourth valence, the first rear side electrode having a first thickness; a black matrix having a lattice shape and a plurality of openings in the lattice shape, the black matrix disposed on a second surface, which is opposite to the first surface, of the substrate; a color filter layer in the plurality of openings; and an overcoat layer on the black matrix and the color filter layer.Type: ApplicationFiled: October 27, 2009Publication date: June 10, 2010Inventors: Kyung-Han SEO, Chul-Woo Kim, Yong-Woo Yoo, Mun-Gi Park, Ho-Su Kim