Patents by Inventor Chang-Il Ryoo
Chang-Il Ryoo 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: 8716062Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the array substrate includes a gate electrode formed on a substrate; a gate insulating layer formed on the gate electrode; an oxide semiconductor layer and an etch prevention layer formed on the gate insulating layer, wherein ends of the oxide semiconductor layer and ends of the etch prevention layer are aligned with each other; source and drain electrodes formed on the etch prevention layer; a passivation layer including a contact hole formed on the source and drain electrodes and on the gate insulating layer; and a pixel electrode formed on the passivation layer and through the contact hole.Type: GrantFiled: January 3, 2014Date of Patent: May 6, 2014Assignee: LG Display Co., Ltd.Inventors: Chang-Il Ryoo, Hyun-Sik Seo, Jong-Uk Bae
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Publication number: 20140120659Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the array substrate includes a gate electrode formed on a substrate; a gate insulating layer formed on the gate electrode; an oxide semiconductor layer and an etch prevention layer formed on the gate insulating layer, wherein ends of the oxide semiconductor layer and ends of the etch prevention layer are aligned with each other; source and drain electrodes formed on the etch prevention layer; a passivation layer including a contact hole formed on the source and drain electrodes and on the gate insulating layer; and a pixel electrode formed on the passivation layer and through the contact hole.Type: ApplicationFiled: January 3, 2014Publication date: May 1, 2014Applicant: LG Display Co., Ltd.Inventors: Chang-Il RYOO, Hyun-Sik SEO, Jong-Uk BAE
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Patent number: 8659017Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the array substrate includes a gate electrode formed on a substrate; a gate insulating layer formed on the gate electrode; an oxide semiconductor layer and an etch prevention layer formed on the gate insulating layer, wherein ends of the oxide semiconductor layer and ends of the etch prevention layer are aligned with each other; source and drain electrodes formed on the etch prevention layer; a passivation layer including a contact hole formed on the source and drain electrodes and on the gate insulating layer; and a pixel electrode formed on the passivation layer and through the contact hole.Type: GrantFiled: June 20, 2013Date of Patent: February 25, 2014Assignee: LG Display Co., Ltd.Inventors: Chang-Il Ryoo, Hyun-Sik Seo, Jong-Uk Bae
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Publication number: 20130277673Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the array substrate includes a gate electrode formed on a substrate; a gate insulating layer formed on the gate electrode; an oxide semiconductor layer and an etch prevention layer formed on the gate insulating layer, wherein ends of the oxide semiconductor layer and ends of the etch prevention layer are aligned with each other; source and drain electrodes formed on the etch prevention layer; a passivation layer including a contact hole formed on the source and drain electrodes and on the gate insulating layer; and a pixel electrode formed on the passivation layer and through the contact hole.Type: ApplicationFiled: June 20, 2013Publication date: October 24, 2013Inventors: Chang-Il RYOO, Hyun-Sik SEO, Jong-Uk BAE
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Patent number: 8502229Abstract: An array substrate including a substrate having a pixel region, a gate line and a gate electrode on the substrate, the gate electrode being connected to the gate line, a gate insulating layer on the gate line and the gate electrode, an oxide semiconductor layer on the gate insulating layer, an auxiliary pattern on the oxide semiconductor layer, and source and drain electrodes on the auxiliary pattern, the source and drain electrodes being disposed over the auxiliary pattern and spaced apart from each other to expose a portion of the auxiliary pattern, the exposed portion of the auxiliary pattern exposing a channel region and including a metal oxide over the channel region, wherein a data line crosses the gate line to define the pixel region and is connected to the source electrode, a passivation layer on the source and drain electrodes and the data line.Type: GrantFiled: March 9, 2012Date of Patent: August 6, 2013Assignee: LG Display Co., Ltd.Inventors: Yong-Yub Kim, Chang-Il Ryoo
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Patent number: 8497147Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the method includes forming a gate electrode on a substrate, forming a gate insulating layer on the gate electrode, forming an oxide semiconductor layer and an etch prevention layer on the gate insulating layer using a single mask, forming source and drain electrodes on the etch prevention layer, and forming a passivation layer including a contact hole on the source and drain electrodes and on the gate insulating layer, and forming a pixel electrode on the passivation layer and through the contact hole.Type: GrantFiled: May 25, 2011Date of Patent: July 30, 2013Assignee: LG Display Co., Ltd.Inventors: Chang-Il Ryoo, Hyun-Sik Seo, Jong-Uk Bae
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Patent number: 8330696Abstract: A driving method of a liquid crystal display device includes steps of providing image data to a liquid crystal panel each frame, providing an image-data gate driving signal to the liquid crystal panel and inputting the image data to the liquid crystal panel, providing black data to the liquid crystal panel, providing a black-data gate driving signal to the liquid crystal panel and inputting the black data to the liquid crystal panel, and delaying the black-data gate driving signal when each frame starts.Type: GrantFiled: September 28, 2009Date of Patent: December 11, 2012Assignee: LG Display Co., Ltd.Inventors: Hyung-Nyuck Cho, Chang Il Ryoo, Hae-Yeol Kim
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Patent number: 8158466Abstract: An array substrate including a substrate having a pixel region, a gate line and a gate electrode on the substrate, the gate electrode being connected to the gate line, a gate insulating layer on the gate line and the gate electrode, an oxide semiconductor layer on the gate insulating layer, an auxiliary pattern on the oxide semiconductor layer, and source and drain electrodes on the auxiliary pattern, the source and drain electrodes being disposed over the auxiliary pattern and spaced apart from each other to expose a portion of the auxiliary pattern. Further, the exposed portion of the auxiliary pattern exposes a channel region and including a metal oxide over the channel region.Type: GrantFiled: December 4, 2009Date of Patent: April 17, 2012Assignee: LG Display Co., Ltd.Inventors: Yong-Yub Kim, Chang-Il Ryoo
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Publication number: 20110291096Abstract: A method of fabricating an array substrate and a display device including the array substrate are discussed. According to an embodiment, the method includes forming a gate electrode on a substrate, forming a gate insulating layer on the gate electrode, forming an oxide semiconductor layer and an etch prevention layer on the gate insulating layer using a single mask, forming source and drain electrodes on the etch prevention layer, and forming a passivation layer including a contact hole on the source and drain electrodes and on the gate insulating layer, and forming a pixel electrode on the passivation layer and through the contact hole.Type: ApplicationFiled: May 25, 2011Publication date: December 1, 2011Inventors: Chang-Il RYOO, Hyun-Sik Seo, Jong-Uk Bae
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Publication number: 20100308324Abstract: An array substrate including a substrate having a pixel region, a gate line and a gate electrode on the substrate, the gate electrode being connected to the gate line, a gate insulating layer on the gate line and the gate electrode, an oxide semiconductor layer on the gate insulating layer, an auxiliary pattern on the oxide semiconductor layer, and source and drain electrodes on the auxiliary pattern, the source and drain electrodes being disposed over the auxiliary pattern and spaced apart from each other to expose a portion of the auxiliary pattern. Further, the exposed portion of the auxiliary pattern exposes a channel region and including a metal oxide over the channel region.Type: ApplicationFiled: December 4, 2009Publication date: December 9, 2010Inventors: Yong-Yub Kim, Chang-Il Ryoo
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Publication number: 20100245225Abstract: A driving method of a liquid crystal display device includes steps of providing image data to a liquid crystal panel each frame, providing an image-data gate driving signal to the liquid crystal panel and inputting the image data to the liquid crystal panel, providing black data to the liquid crystal panel, providing a black-data gate driving signal to the liquid crystal panel and inputting the black data to the liquid crystal panel, and delaying the black-data gate driving signal when each frame starts.Type: ApplicationFiled: September 28, 2009Publication date: September 30, 2010Inventors: Hyung-Nyuck CHO, Chang Il Ryoo, Hae-Yeol Kim