Patents by Inventor Won-Joon Ho
Won-Joon Ho 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: 10043679Abstract: A method of fabricating an array substrate including forming an oxide semiconductor layer on a substrate; sequentially forming a gate insulating layer and a gate electrode corresponding to a central portion of the oxide semiconductor layer; forming source and drain areas having conductive properties in the oxide semiconductor layer by irradiating X-rays or UV rays to the oxide semiconductor layer exposed outside the gate electrode; forming an inter insulating layer on the gate electrode and having first contact holes that expose the source and drain areas; and forming source and drain electrodes on the inter insulating layer and contacting the source and drain areas through the first contact holes, respectively.Type: GrantFiled: March 21, 2017Date of Patent: August 7, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Hee-Jung Yang, Hyung-Tae Kim, Jae-Young Jeong, Gyu-Won Han, Dong-Sun Kim, Won-Joon Ho
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Patent number: 9997588Abstract: A display device according to an embodiment includes a display panel and a circuit board connected to the display panel. The circuit board is connected to a bonding area of the display panel by an anisotropic conductive film. The display panel includes a cover insulating layer exposing the bonding area. The cover insulating layer includes at least one trench crossing an edge area, which is located outside the bonding area.Type: GrantFiled: April 5, 2017Date of Patent: June 12, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Seung-Won Jung, Dong-Sun Kim, Won-Joon Ho
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Publication number: 20180006104Abstract: A display device according to an embodiment includes a display panel and a circuit board connected to the display panel. The circuit board is connected to a bonding area of the display panel by an anisotropic conductive film. The display panel includes a cover insulating layer exposing the bonding area. The cover insulating layer includes at least one trench crossing an edge area, which is located outside the bonding area.Type: ApplicationFiled: April 5, 2017Publication date: January 4, 2018Applicant: LG DISPLAY CO., LTD.Inventors: Seung-Won JUNG, Dong-Sun KIM, Won-Joon HO
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Publication number: 20170194168Abstract: A method of fabricating an array substrate including forming an oxide semiconductor layer on a substrate; sequentially forming a gate insulating layer and a gate electrode corresponding to a central portion of the oxide semiconductor layer; forming source and drain areas having conductive properties in the oxide semiconductor layer by irradiating X-rays or UV rays to the oxide semiconductor layer exposed outside the gate electrode; forming an inter insulating layer on the gate electrode and having first contact holes that expose the source and drain areas; and forming source and drain electrodes on the inter insulating layer and contacting the source and drain areas through the first contact holes, respectively.Type: ApplicationFiled: March 21, 2017Publication date: July 6, 2017Applicant: LG DISPLAY CO., LTD.Inventors: Hee-Jung YANG, Hyung-Tae KIM, Jae-Young JEONG, Gyu-Won HAN, Dong-Sun KIM, Won-Joon HO
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Patent number: 9640567Abstract: A method of fabrication an array substrate which includes foaming an oxide semiconductor layer on a substrate; forming a gate insulating layer corresponding to a central portion of the oxide semiconductor layer; forming a first reactive metallic pattern and second reactive metallic patterns on the gate insulating layer and portions of the oxide semiconductor layer exposed outside the gate insulating layer, respectively; forming a gate electrode on the first reactive metallic pattern; forming source and drain areas having conductive properties in the oxide semiconductor layer by performing heat treatment such that materials of the second reactive metallic patterns are diffused into the oxide semiconductor layer contacting the second reactive metallic patterns; forming an inter insulating layer on the gate electrode and having first contact holes that expose the second reactive metallic patterns; and forming source and drain electrodes on the inter insulating layer and contacting the second reactive metallic paType: GrantFiled: February 10, 2016Date of Patent: May 2, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Hee-Jung Yang, Hyung-Tae Kim, Jae-Young Jeong, Gyu-Won Han, Dong-Sun Kim, Won-Joon Ho
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Publication number: 20160172388Abstract: A method of fabrication an array substrate which includes foaming an oxide semiconductor layer on a substrate; forming a gate insulating layer corresponding to a central portion of the oxide semiconductor layer; forming a first reactive metallic pattern and second reactive metallic patterns on the gate insulating layer and portions of the oxide semiconductor layer exposed outside the gate insulating layer, respectively; forming a gate electrode on the first reactive metallic pattern; forming source and drain areas having conductive properties in the oxide semiconductor layer by performing heat treatment such that materials of the second reactive metallic patterns are diffused into the oxide semiconductor layer contacting the second reactive metallic patterns; forming an inter insulating layer on the gate electrode and having first contact holes that expose the second reactive metallic patterns; and forming source and drain electrodes on the inter insulating layer and contacting the second reactive metallic paType: ApplicationFiled: February 10, 2016Publication date: June 16, 2016Applicant: LG DISPLAY CO., LTD.Inventors: Hee-Jung YANG, Hyung-Tae KIM, Jae-Young JEONG, Gyu-Won HAN, Dong-Sun KIM, Won-Joon HO
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Patent number: 9293603Abstract: An oxide thin film transistor (TFT) includes an oxide semiconductor layer including a first semiconductor layer and a second semiconductor layer on the first semiconductor layer; a gate insulating layer on the oxide semiconductor layer; a gate electrode on the gate insulating layer; an interlayer insulating layer on the gate electrode; and a source electrode and a drain electrode on the interlayer insulating layer and contacting the oxide semiconductor layer, wherein a first reflectance of the first semiconductor layer is greater than a second semiconductor layer.Type: GrantFiled: October 29, 2014Date of Patent: March 22, 2016Assignee: LG Display Co., Ltd.Inventors: Hee-Jung Yang, Won-Joon Ho, A-Ra Kim
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Patent number: 9293478Abstract: A method of fabrication an array substrate includes forming an oxide semiconductor layer on a substrate; sequentially forming a gate insulating layer and a gate electrode corresponding to a central portion of the oxide semiconductor layer; forming source and drain areas having conductive properties in the oxide semiconductor layer by performing hydrogen plasma treatment; forming barrier layers on the source and drain areas, the barrier layer having a first thickness; forming an inter insulating layer on the gate electrode and having first contact holes that expose the barrier layers; and forming source and drain electrodes on the inter insulating layer and contacting the barrier layers through the first contact holes, respectively.Type: GrantFiled: October 23, 2013Date of Patent: March 22, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Hee-Jung Yang, Hyung-Tae Kim, Jae-Young Jeong, Gyu-Won Han, Dong-Sun Kim, Won-Joon Ho
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Patent number: 9276016Abstract: An array substrate including: a gate barrier layer on a substrate; a gate line on the gate barrier layer, the gate line having a gate open portion exposing the gate barrier layer in a gate electrode region; a gate insulating layer on the gate line; an active layer on the gate insulating layer over the gate barrier layer in the gate electrode region; and source and drain electrodes spaced apart from each other on the active layer.Type: GrantFiled: November 17, 2014Date of Patent: March 1, 2016Assignee: LG Display Co., Ltd.Inventors: Hee-Jung Yang, Dong-Sun Kim, Won-Joon Ho, A-Ra Kim
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Publication number: 20150144944Abstract: An array substrate including: a gate barrier layer on a substrate; a gate line on the gate barrier layer, the gate line having a gate open portion exposing the gate barrier layer in a gate electrode region; a gate insulating layer on the gate line; an active layer on the gate insulating layer over the gate barrier layer in the gate electrode region; and source and drain electrodes spaced apart from each other on the active layer.Type: ApplicationFiled: November 17, 2014Publication date: May 28, 2015Inventors: Hee-Jung YANG, Dong-Sun KIM, Won-Joon HO, A-Ra KIM
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Publication number: 20150144942Abstract: An oxide thin film transistor (TFT) includes an oxide semiconductor layer including a first semiconductor layer and a second semiconductor layer on the first semiconductor layer; a gate insulating layer on the oxide semiconductor layer; a gate electrode on the gate insulating layer; an interlayer insulating layer on the gate electrode; and a source electrode and a drain electrode on the interlayer insulating layer and contacting the oxide semiconductor layer, wherein a first reflectance of the first semiconductor layer is greater than a second semiconductor layer.Type: ApplicationFiled: October 29, 2014Publication date: May 28, 2015Applicant: LG Display Co., Ltd.Inventors: Hee-Jung YANG, Won-Joon HO, A-Ra KIM
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Publication number: 20140120658Abstract: A method of fabrication an array substrate includes forming an oxide semiconductor layer on a substrate; sequentially forming a gate insulating layer and a gate electrode corresponding to a central portion of the oxide semiconductor layer; forming source and drain areas having conductive properties in the oxide semiconductor layer by performing hydrogen plasma treatment; forming barrier layers on the source and drain areas, the barrier layer having a first thickness; forming an inter insulating layer on the gate electrode and having first contact holes that expose the barrier layers; and forming source and drain electrodes on the inter insulating layer and contacting the barrier layers through the first contact holes, respectively.Type: ApplicationFiled: October 23, 2013Publication date: May 1, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Hee-Jung YANG, Hyung-Tae KIM, Jae-Young JEONG, Gyu-Won HAN, Dong-Sun KIM, Won-Joon HO
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Patent number: 8247256Abstract: There are provided a CMOS image sensor and a method for fabrication thereof. The CMOS image sensor having a reset transistor, a select transistor, a drive transistor and a photodiode, includes an active region in shape of a line, a gate electrode of the drive transistor, which is intersected with the active region, a blocking layer interposed between the active region and the gate electrode in which the blocking layer is formed on an intersection region of the active region and the gate electrode, and a metal contact electrically connected to the gate electrode, wherein the metal contact is not electrically connected to the active region by the blocking layer.Type: GrantFiled: December 16, 2010Date of Patent: August 21, 2012Assignee: Intellectual Ventures II LLCInventors: Won-Joon Ho, Kyung-Lak Lee
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Patent number: 8183070Abstract: A method of fabricating an array substrate for a liquid crystal display device includes: forming an initial photoresist (PR) pattern on a metallic material layer; etching the metallic material layer using the initial PR pattern as an etching mask to form the data line and a metallic material pattern, wherein the initial PR pattern is disposed on the data line; performing a first ashing process onto the initial PR pattern to partially remove the initial PR pattern so as to form a first ashed PR pattern, the first ashed PR pattern having a smaller width and a smaller thickness than the initial PR pattern such that end portions of the data line are exposed by the first ashed PR pattern; etching the intrinsic amorphous silicon layer and the impurity-doped amorphous silicon layer by a first dry-etching process; forming a source electrode and a drain electrode on the substrate.Type: GrantFiled: November 14, 2008Date of Patent: May 22, 2012Assignee: LG Display Co., Ltd.Inventors: Seok-Won Kim, Won-Joon Ho, Hyuk-Jin Kwon, Chang-Mo Yoo
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Publication number: 20110086459Abstract: There are provided a CMOS image sensor and a method for fabrication thereof. The CMOS image sensor having a reset transistor, a select transistor, a drive transistor and a photodiode, includes an active region in shape of a line, a gate electrode of the drive transistor, which is intersected with the active region, a blocking layer interposed between the active region and the gate electrode in which the blocking layer is formed on an intersection region of the active region and the gate electrode, and a metal contact electrically connected to the gate electrode, wherein the metal contact is not electrically connected to the active region by the blocking layer.Type: ApplicationFiled: December 16, 2010Publication date: April 14, 2011Applicant: Crosstek Capital, LLCInventors: Won-Joon Ho, Kyung-Lak Lee
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Patent number: 7863658Abstract: There are provided a CMOS image sensor and a method for fabrication thereof. The CMOS image sensor having a reset transistor, a select transistor, a drive transistor and a photodiode, includes an active region in shape of a line, a gate electrode of the drive transistor, which is intersected with the active region, a blocking layer interposed between the active region and the gate electrode in which the blocking layer is formed on an intersection region of the active region and the gate electrode, and a metal contact electrically connected to the gate electrode, wherein the metal contact is not electrically connected to the active region by the blocking layer.Type: GrantFiled: June 14, 2006Date of Patent: January 4, 2011Inventors: Won-Joon Ho, Kyung-Lak Lee
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Patent number: 7687333Abstract: According to an embodiment, a method of fabricating a thin film transistor comprises forming a gate electrode on a substrate; forming a gate insulating layer on the gate electrode; forming a semiconductor layer on the gate insulating layer, the semiconductor layer corresponding to the gate electrode; forming first and second barrier patterns on the semiconductor layer, the first and second barrier patterns including copper nitride; and forming source and drain electrodes on the first and second barrier patterns, respectively, the source and drain electrodes including pure copper.Type: GrantFiled: December 27, 2007Date of Patent: March 30, 2010Assignee: LG Display Co., Ltd.Inventors: Hee-Jung Yang, Dong-sun Kim, Du-Seok Oh, Won-Joon Ho
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Publication number: 20090294781Abstract: A method of fabricating an array substrate for a liquid crystal display device includes: forming an initial photoresist (PR) pattern on a metallic material layer; etching the metallic material layer using the initial PR pattern as an etching mask to form the data line and a metallic material pattern, wherein the initial PR pattern is disposed on the data line; performing a first ashing process onto the initial PR pattern to partially remove the initial PR pattern so as to form a first ashed PR pattern, the first ashed PR pattern having a smaller width and a smaller thickness than the initial PR pattern such that end portions of the data line are exposed by the first ashed PR pattern; etching the intrinsic amorphous silicon layer and the impurity-doped amorphous silicon layer by a first dry-etching process; forming a source electrode and a drain electrode on the substrate.Type: ApplicationFiled: November 14, 2008Publication date: December 3, 2009Inventors: Seok-Won KIM, Won-Joon Ho, Hyuk-Jin Kwon, Chang-Mo Yoo
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Publication number: 20080227243Abstract: According to an embodiment, a method of fabricating a thin film transistor comprises forming a gate electrode on a substrate; forming a gate insulating layer on the gate electrode; forming a semiconductor layer on the gate insulating layer, the semiconductor layer corresponding to the gate electrode; forming first and second barrier patterns on the semiconductor layer, the first and second barrier patterns including copper nitride; and forming source and drain electrodes on the first and second barrier patterns, respectively, the source and drain electrodes including pure copper.Type: ApplicationFiled: December 27, 2007Publication date: September 18, 2008Inventors: Hee-Jung YANG, Dong-sun KIM, Du-Seok OH, Won-Joon HO
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Publication number: 20060284273Abstract: There are provided a CMOS image sensor and a method for fabrication thereof. The CMOS image sensor having a reset transistor, a select transistor, a drive transistor and a photodiode, includes an active region in shape of a line, a gate electrode of the drive transistor, which is intersected with the active region, a blocking layer interposed between the active region and the gate electrode in which the blocking layer is formed on an intersection region of the active region and the gate electrode, and a metal contact electrically connected to the gate electrode, wherein the metal contact is not electrically connected to the active region by the blocking layer.Type: ApplicationFiled: June 14, 2006Publication date: December 21, 2006Inventors: Won-Joon Ho, Kyung-Lak Lee