Patents by Inventor Joon Young Yang
Joon Young Yang 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: 7903188Abstract: A method of fabricating a liquid crystal display device includes forming a gate electrode; forming a gate insulator on the gate electrode, an active layer on the gate insulator, and an etch stopper on the active layer; depositing an ohmic contact layer, a first metal layer and a second metal layer on the substrate; etching the ohmic contact layer, and the first and second metal layers to form ohmic contact patterns, and first and second metal patterns including source, drain and pixel electrodes using a single photomask.Type: GrantFiled: May 4, 2007Date of Patent: March 8, 2011Assignee: LG Display Co., Ltd.Inventor: Joon Young Yang
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Patent number: 7876390Abstract: A method of fabricating an LCD includes providing first and second substrates. A gate electrode, a gate line, a connection electrode, a common electrode and a pixel electrode are formed on the first substrate through a first making process. A first insulation film is formed on the first substrate. A first insulation film pattern having multiple contact holes are formed through a second masking process. An active pattern is formed on the first substrate and source and drain electrodes are operationally connected with the active pattern through some of the contact holes. A gate electrode, a common electrode, and a pixel electrode may be formed substantially together through a slit exposure. An active pattern and source and drain electrodes may be formed substantially together. The number of masks needed to fabricate the display may be reduced to simplify a fabrication process and protect a channel region.Type: GrantFiled: September 8, 2006Date of Patent: January 25, 2011Assignee: LG Display Co., Ltd.Inventor: Joon-Young Yang
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Patent number: 7852453Abstract: An IPS mode LCD device and a method for fabricating the same are disclosed. A switching device is formed at each unit pixel and then a passivation layer is formed thereon. A first concave pattern and a second concave pattern at each unit pixel by using one mask are formed, and a common electrode is formed in the first concave pattern and a pixel electrode is formed in the second concave pattern. Accordingly, the entire fabrication process is simplified.Type: GrantFiled: September 17, 2009Date of Patent: December 14, 2010Assignee: LG Display Co., Ltd.Inventors: Joon-Young Yang, Jung-Il Lee
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Publication number: 20100277659Abstract: A liquid crystal display and a fabricating method thereof are provided. The liquid crystal display includes a first substrate having a pixel portion and a pad portion; a gate line and a data line crossing each other to define the pixel portion at the pixel portion; a transistor adjacent to a crossing of the gate line and the data line, the transistor including a gate electrode, a source electrode and a drain electrode; an insulating layer above the source electrode and the drain electrode, the insulating layer exposing a lateral side of the drain electrode; a pixel electrode in contact with the lateral side of the drain electrode; a second substrate attached to the first substrate; and a liquid crystal layer between the first substrate and a second substrate.Type: ApplicationFiled: July 12, 2010Publication date: November 4, 2010Inventors: Joon-Young YANG, Jung-Il Lee
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Patent number: 7804550Abstract: A method of fabricating a liquid crystal display device includes forming an active pattern and a data line on a substrate, forming a first insulating layer on the data line, forming a second insulating layer on the substrate, forming a gate electrode on the second insulating layer above the active pattern, forming a third insulating layer on the substrate, forming first and second contact holes through the second and third insulating layers to expose first and second portions of the active pattern, and forming a third contact hole through the first, second, and third insulating layers exposing a portion of the data line, respectively, and forming source and drain electrodes on the third insulating layer, the source electrode connected to the first exposed portion of the active pattern through the first contact hole and connected to the first exposed portion of the data line through the third contact hole, and the drain electrode connected to the second exposed portion of the active pattern through the secondType: GrantFiled: February 9, 2007Date of Patent: September 28, 2010Assignee: LG Display Co., Ltd.Inventors: Joon Young Yang, Yong In Park, Sang Hyun Kim
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Patent number: 7795057Abstract: A liquid crystal display (LCD) device and its fabrication method includes providing a substrate divided into pixel part and pad parts; forming a gate electrode and a gate line at the pixel part through a first masking process; forming a first insulation film; forming an active pattern and source and drain electrodes at an upper portion of the gate electrode of the pixel part and forming a data line substantially crossing the gate line to define a pixel region through a second masking process; forming a pixel electrode directly electrically connected with the drain electrode at the pixel region of the pixel part through a third masking process; and attaching first and second substrates. A pixel electrode is formed to directly electrically connect with a drain electrode by selectively etching a transparent conductive film without forming a contact hole.Type: GrantFiled: December 8, 2006Date of Patent: September 14, 2010Assignee: LG Display Co., Ltd.Inventors: Myoung Su Yang, Joon-Young Yang, Jung-Il Lee
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Publication number: 20100200862Abstract: A liquid crystal display device may comprise a semiconductor layer on a substrate and including a channel portion and ohmic contact portions at both sides of the channel portion, wherein an edge portion of the semiconductor layer has a side surface of a substantially tapered shape; a gate insulating layer covering the semiconductor layer; a gate electrode on the gate insulating layer and substantially corresponding to the channel portion; source and drain electrodes contacting the semiconductor layer; and a pixel electrode contacting the drain electrode.Type: ApplicationFiled: April 19, 2010Publication date: August 12, 2010Inventors: Joon Young YANG, Jae Young Oh, Soopool Kim
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Patent number: 7763481Abstract: A liquid crystal display and a fabricating method thereof are provided. The liquid crystal display includes a first substrate having a pixel portion and a pad portion; a gate line and a data line crossing each other to define the pixel portion at the pixel portion; a transistor adjacent to a crossing of the gate line and the data line, the transistor including a gate electrode, a source electrode and a drain electrode; an insulating layer above the source electrode and the drain electrode, the insulating layer exposing a lateral side of the drain electrode; a pixel electrode in contact with the lateral side of the drain electrode; a second substrate attached to the first substrate; and a liquid crystal layer between the first substrate and a second substrate.Type: GrantFiled: September 18, 2006Date of Patent: July 27, 2010Assignee: LG Display Co., Ltd.Inventors: Joon-Young Yang, Jung-Il Lee
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Patent number: 7727824Abstract: A liquid crystal display device may comprise a semiconductor layer on a substrate and including a channel portion and ohmic contact portions at both sides of the channel portion, wherein an edge portion of the semiconductor layer has a side surface of a substantially tapered shape; a gate insulating layer covering the semiconductor layer; a gate electrode on the gate insulating layer and substantially corresponding to the channel portion; source and drain electrodes contacting the semiconductor layer; and a pixel electrode contacting the drain electrode.Type: GrantFiled: November 2, 2006Date of Patent: June 1, 2010Assignee: LG Display Co., Ltd.Inventors: Joon Young Yang, Jae Young Oh, Soopool Kim
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Patent number: 7719639Abstract: A transflective-type liquid crystal display device includes a plurality of gate and data lines crossing each other on a substrate to define a plurality of pixel regions, a thin film transistor at each crossing of the gate and data lines, the thin film transistor including a semiconductor layer, and source and drain electrodes contacting source and drain regions, respectively, a projection seed pattern within the pixel region along a same layer as the semiconductor layer of the thin film transistor, and a reflective electrode contacting the drain electrode of the thin film transistor and having a reflective projection corresponding to the projection seed pattern.Type: GrantFiled: September 21, 2006Date of Patent: May 18, 2010Assignee: LF Gisplay Co., Ltd.Inventors: Joon Young Yang, Yong In Park, Sang Hyun Kim
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Patent number: 7714963Abstract: An array substrate for a transflective liquid crystal display device includes: a substrate; a gate line and a data line on the substrate, the gate line and the data line crossing each other to define a pixel region including a transmissive area and a reflective area surrounding the transmissive area; a thin film transistor having a gate insulating layer, the thin film transistor electrically connected to the gate line and the data line; a first passivation layer having a drain contact hole exposing a drain electrode of the thin film transistor and a through hole exposing the substrate in the transmissive area; a pixel electrode on the first passivation layer, the pixel electrode contacting the substrate in the transmissive area through the through hole; and a reflective plate on the pixel electrode, the reflective plate being electrically connected to the drain electrode through the drain contact hole and to the pixel electrode.Type: GrantFiled: March 10, 2006Date of Patent: May 11, 2010Assignee: LG Display Co., Ltd.Inventors: Jung Il Lee, Joon Young Yang
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Publication number: 20100099205Abstract: A method of manufacturing a liquid crystal display device is provided which includes ashing first and second photoresist patterns, whereby a copper oxide film is formed at portions of a data line and a source-drain pattern exposed between the ashed first and second photoresist patterns and between the ashed first and second portions of the first photoresist pattern; deoxidizing or removing the copper oxide film; performing a plasma treatment to change the exposed portions of the data line and the source-drain pattern into a copper compound; removing the copper compound using a copper compound removing solution to form source and drain electrodes below the ashed first and second portions, respectively, wherein the copper compound removing solution substantially has no reaction with the copper group material; dry-etching a portion of an ohmic contact layer between the source and drain electrodes using the source and drain electrodes as an etching mask, the ohmic contact layer formed by patterning the impurity-dType: ApplicationFiled: September 29, 2009Publication date: April 22, 2010Inventors: Kang-Il Kim, Joon-Young Yang, Kye-Chang Song, Soopool Kim, Young-Kwon Kang
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Patent number: 7701521Abstract: An array substrate for a liquid crystal display device includes a substrate including a first driving region, a second driving region, and a pixel region, the pixel region including a switching region and a storage region; a first n-type transistor in the first driving region, a second p-type transistor in the second driving region; a third transistor in the switching region, the third transistor including a gate electrode, an active layer, a source electrode, and a drain electrode; an extension portion in the storage region and extending from the active layer; a metal pattern on the extension portion; a storage line over the metal pattern; and a pixel electrode in the pixel region and contacting the third transistor, wherein the metal pattern, the storage line and the pixel electrode form first, second and third electrodes of a storage capacitor that includes a first capacitor and a second capacitor parallel to each other.Type: GrantFiled: July 24, 2007Date of Patent: April 20, 2010Assignee: LG Display Co., Ltd.Inventor: Joon-Young Yang
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Patent number: 7697094Abstract: A transflective-type liquid crystal display device includes a plurality of gate and data lines crossing each other on a substrate to define a plurality of pixel regions, a thin film transistor at each crossing of the gate and data lines, the thin film transistor including a semiconductor layer, and source and drain electrodes contacting source and drain regions, respectively, a projection seed pattern within the pixel region along a same layer as the semiconductor layer of the thin film transistor, and a reflective electrode contacting the drain electrode of the thin film transistor and having a reflective projection corresponding to the projection seed pattern.Type: GrantFiled: September 21, 2006Date of Patent: April 13, 2010Assignee: LG Display Co., Ltd.Inventors: Joon Young Yang, Yong In Park, Sang Hyun Kim
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Publication number: 20100009478Abstract: An IPS mode LCD device and a method for fabricating the same are disclosed. A switching device is formed at each unit pixel and then a passivation layer is formed thereon. A first concave pattern and a second concave pattern at each unit pixel by using one mask are formed, and a common electrode is formed in the first concave pattern and a pixel electrode is formed in the second concave pattern. Accordingly, the entire fabrication process is simplified.Type: ApplicationFiled: September 17, 2009Publication date: January 14, 2010Inventors: Joon-Young YANG, Jung-Il Lee
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Patent number: 7609349Abstract: An IPS mode LCD device and a method for fabricating the same are disclosed. A switching device is formed at each unit pixel and then a passivation layer is formed thereon. A first concave pattern and a second concave pattern at each unit pixel by using one mask are formed, and a common electrode is formed in the first concave pattern and a pixel electrode is formed in the second concave pattern. Accordingly, the entire fabrication process is simplified.Type: GrantFiled: December 30, 2005Date of Patent: October 27, 2009Assignee: LG Display Co., Ltd.Inventors: Joon-Young Yang, Jung-Il Lee
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Patent number: 7550767Abstract: A method for fabricating an LCD device includes forming sequentially a first conductive layer, a first insulation layer, a semiconductor layer, and an ohmic contact layer on a first substrate; forming a gate line by patterning the first conductive layer, the first insulation layer, the semiconductor layer, and the ohmic contact layer; exposing a first gate pad electrode connected with the gate line; insulating the gate line; forming a data line that intersects the gate line, wherein an electrode part is formed extending from the data line such that the electrode part is formed over the semiconductor layer and the ohmic layer, and defines an active pattern; forming a transparent electrode layer on the substrate including the electrode part; and forming source, drain, and pixel electrodes simultaneously by patterning at least one of the transparent electrode layer, the electrode part, and the ohmic contact layer.Type: GrantFiled: September 29, 2006Date of Patent: June 23, 2009Assignee: LG Display Co., Ltd.Inventors: Joon-Young Yang, Jung-Il Lee
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Publication number: 20090152562Abstract: A method of fabricating a liquid crystal display device includes forming first, second, and third active patterns on a substrate having a pixel region and a driving region, wherein the first and second active patterns are in the driving region and the third active pattern is in the pixel region, the first, second, and third active patterns each having an active region, a source region, and a drain region with the source and drain regions on opposing sides of the active region, forming a gate insulator on the first, second, and third active patterns, forming first, second, and third gate electrodes on the gate insulator, wherein the first, second, and third gate electrodes correspond to the active regions of the first, second, and third active patterns, respectively, doping the source and drain regions of the first, second, and third active patterns with n? ions using the first, second, and third gate electrodes as a doping mask, doping the n? doped source and drain regions of the second active pattern with p+Type: ApplicationFiled: November 7, 2008Publication date: June 18, 2009Inventor: Joon Young Yang
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Publication number: 20090140260Abstract: A method for fabricating a liquid crystal display (LCD) device comprises forming an active pattern and a data line on a substrate, the active pattern including a source, a drain, and a channel regions; a first insulation film on a portion of the substrate; forming a gate electrode in a portion of the active pattern where the first insulation film is formed; a second insulation film on the substrate; forming a plurality of first contact holes exposing a portion of the source and drain regions and a second contact hole exposing a portion of the data line; forming a source electrode from a transparent conductive material connected to a source region within the respective first contact hole and a data line within the second contact hole; and forming a pixel and a drain electrodes from the transparent conductive material connected to a drain region within the respective first contact hole.Type: ApplicationFiled: January 15, 2009Publication date: June 4, 2009Inventors: Joon-Young Yang, Yong-In Park, Sang-Hyun Kim
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Publication number: 20090057667Abstract: Provided are a display device and a fabricating method thereof. The display device includes a substrate, a gate line, a common line, common electrodes, an insulating layer, a data line, a drain electrode, and pixel electrodes. The gate line is disposed in a first direction. The common line is disposed substantially parallel to the gate line. The common electrodes branch from the common line. The insulating layer covers the gate line, the common line, and the common electrodes. The channel patterns are disposed on the insulating layer to correspond to the gate electrode. The data line is disposed in a second direction. The drain electrode is electrically connected with the channel pattern. The pixel electrodes are formed of an opaque metal. Thus, the display device may improve contrast ratio.Type: ApplicationFiled: April 18, 2008Publication date: March 5, 2009Applicant: LG.PHILIPS LCD CO., LTD.Inventors: Joon Young Yang, Soo Pool Kim