Patents by Inventor Yong Tae Cho
Yong Tae Cho 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: 10566323Abstract: A scan driver has a plurality of stages configured to supply a scan signal to scan lines. The plurality of stages include a stage coupled to a scan line of the scan lines. The stage includes a first transistor including a gate electrode, a drain electrode and a source electrode and is configured to output the scan signal to the scan line; a second transistor provided on a side of the first transistor and connected to the drain electrode; a third transistor provided on the side of the first transistor and connected to the source electrode; a capacitor provided between the scan line and the first transistor; a first dummy transistor provided between the first transistor and the capacitor and connected to the capacitor; and a second dummy transistor provided between the first transistor and the second transistor and connected to both the first transistor and the second transistor.Type: GrantFiled: October 31, 2017Date of Patent: February 18, 2020Assignee: Samsung Display Co., Ltd.Inventors: Jee Hoon Han, Won Jun Lee, Kyung Suk Jung, Yong Tae Cho, O Sung Seo, Yun Seok Lee
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Patent number: 10515985Abstract: A transistor display panel including a substrate, a gate line disposed on the substrate and extending in a first direction, a gate electrode protruding from the gate line, a gate insulating layer disposed on the gate line and the gate electrode, a semiconductor layer and an auxiliary layer disposed on the gate insulating layer and spaced apart from each other, a data line disposed on the gate insulating layer and extending in a second direction which is a direction crossing the gate line, a drain electrode disposed on the gate insulating layer and the semiconductor layer and spaced apart from the data line, and a pixel electrode connected to the drain electrode, in which the auxiliary layer overlaps an edge of the gate electrode in a plan view.Type: GrantFiled: August 9, 2018Date of Patent: December 24, 2019Assignee: Samsung Display Co., Ltd.Inventors: Byung Hwan Chu, Sho Yeon Kim, Wan-Soon Im, Yong Tae Cho
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Publication number: 20190123064Abstract: A transistor display panel including a substrate, a gate line disposed on the substrate and extending in a first direction, a gate electrode protruding from the gate line, a gate insulating layer disposed on the gate line and the gate electrode, a semiconductor layer and an auxiliary layer disposed on the gate insulating layer and spaced apart from each other, a data line disposed on the gate insulating layer and extending in a second direction which is a direction crossing the gate line, a drain electrode disposed on the gate insulating layer and the semiconductor layer and spaced apart from the data line, and a pixel electrode connected to the drain electrode, in which the auxiliary layer overlaps an edge of the gate electrode in a plan view.Type: ApplicationFiled: August 9, 2018Publication date: April 25, 2019Inventors: Byung Hwan CHU, Sho Yeon KIM, Wan-Soon IM, Yong Tae CHO
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Patent number: 10234716Abstract: A liquid crystal display device includes a display area, a peripheral area, and a boundary area between the display area and the peripheral area and further includes: a first substrate; a switching element disposed on the first substrate in the display area; a pad disposed on the first substrate in the peripheral area and electrically connected with the switching element; a protective film disposed on the first substrate in the display area, the peripheral area, and the boundary area, and covering the switching element and the pad; a color filter disposed on the protective film in the display area; and a planarization film covering the color filter and contacting the protective film in the boundary area and the peripheral area. The planarization film is provided with a first opening overlapping the pad and at least one second opening formed in the boundary area.Type: GrantFiled: November 1, 2017Date of Patent: March 19, 2019Assignee: Samsung Display Co., Ltd.Inventors: Jee Hoon Han, O Sung Seo, Kyung Suk Jung, Yong Tae Cho
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Patent number: 10088716Abstract: An LCD includes: pixel electrodes; a common electrode including a plurality of slits; and a liquid crystal layer interposed between the pixel electrodes and the common electrode. The plurality of slits include a first slit and a second slit that are disposed adjacent to each other in a first direction. The first slit includes a first central portion and a first extension portion extending from the first central portion toward the second slit, and the second slit includes a second central portion and a first extension portion extending from the second central portion toward the first slit. An end of the first extension portion of the first slit and an end of the first extension portion of the second slit are spaced apart from each other; and disposed, in a staggered manner, on opposite sides of an imaginary center line connecting the first central portion and the second central portion.Type: GrantFiled: July 22, 2016Date of Patent: October 2, 2018Inventors: In Woo Kim, Joong Tae Kim, Da Young Lee, Ki Hun Jeong, Yong Tae Cho, Min Ha Hwang
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Publication number: 20180182748Abstract: A scan driver has a plurality of stages configured to supply a scan signal to scan lines. The plurality of stages include a stage coupled to a scan line of the scan lines. The stage includes a first transistor including a gate electrode, a drain electrode and a source electrode and is configured to output the scan signal to the scan line; a second transistor provided on a side of the first transistor and connected to the drain electrode; a third transistor provided on the side of the first transistor and connected to the source electrode; a capacitor provided between the scan line and the first transistor; a first dummy transistor provided between the first transistor and the capacitor and connected to the capacitor; and a second dummy transistor provided between the first transistor and the second transistor and connected to both the first transistor and the second transistor.Type: ApplicationFiled: October 31, 2017Publication date: June 28, 2018Inventors: Jee Hoon HAN, Won Jun LEE, Kyung Suk JUNG, Yong Tae CHO, O Sung SEO, Yun Seok LEE
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Publication number: 20180129099Abstract: A liquid crystal display device includes a display area, a peripheral area, and a boundary area between the display area and the peripheral area and further includes: a first substrate; a switching element disposed on the first substrate in the display area; a pad disposed on the first substrate in the peripheral area and electrically connected with the switching element; a protective film disposed on the first substrate in the display area, the peripheral area, and the boundary area, and covering the switching element and the pad; a color filter disposed on the protective film in the display area; and a planarization film covering the color filter and contacting the protective film in the boundary area and the peripheral area. The planarization film is provided with a first opening overlapping the pad and at least one second opening formed in the boundary area.Type: ApplicationFiled: November 1, 2017Publication date: May 10, 2018Inventors: Jee Hoon HAN, O Sung SEO, Kyung Suk JUNG, Yong Tae CHO
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Patent number: 9685130Abstract: A display device includes a substrate, a gate line connected to a gate driver, a reference voltage line, a data line crossing the gate line and the reference voltage line, a first thin film transistor including a first drain electrode and connected to the gate line and the data line, a second thin film transistor including a second drain electrode, a third thin film transistor connected to the gate line, the reference voltage line, and the second thin film transistor, and a pixel electrode including a first sub-pixel electrode connected to the first thin film transistor and a second sub-pixel electrode connected to the second thin film transistor. The first drain electrode overlaps the reference voltage line, and an area of a region in which the first drain electrode and the reference voltage line overlap each other increases in a direction toward the gate driver.Type: GrantFiled: March 19, 2014Date of Patent: June 20, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seung Kyu Lee, Woo Sung Sohn, Yong Tae Cho
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Publication number: 20170153515Abstract: An LCD includes: pixel electrodes; a common electrode including a plurality of slits; and a liquid crystal layer interposed between the pixel electrodes and the common electrode. The plurality of slits include a first slit and a second slit that are disposed adjacent to each other in a first direction. The first slit includes a first central portion and a first extension portion extending from the first central portion toward the second slit, and the second slit includes a second central portion and a first extension portion extending from the second central portion toward the first slit. An end of the first extension portion of the first slit and an end of the first extension portion of the second slit are spaced apart from each other; and disposed, in a staggered manner, on opposite sides of an imaginary center line connecting the first central portion and the second central portion.Type: ApplicationFiled: July 22, 2016Publication date: June 1, 2017Inventors: In Woo KIM, Joong Tae KIM, Da Young LEE, Ki Hun JEONG, Yong Tae CHO, Min Ha HWANG
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Patent number: 9613876Abstract: A thin film transistor (TFT) substrate includes a base substrate, a TFT disposed on the base substrate. The TFT includes a gate electrode, a semiconductor layer comprising a channel region, and a source electrode and a drain electrode spaced apart from one another by a length of the channel region. The TFT substrate further includes a gate insulating layer disposed between the gate electrode and the semiconductor layer and a measuring pattern configured to measure a length of the channel region.Type: GrantFiled: December 21, 2015Date of Patent: April 4, 2017Assignee: Samsung Display Co., Ltd.Inventors: Yong Tae Cho, Joong Tae Kim, In Woo Kim, Kwang Su Park, Da Young Lee, Min Ha Hwang, Seong Jun Hwang
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Publication number: 20160293504Abstract: A thin film transistor (TFT) substrate includes a base substrate, a TFT disposed on the base substrate. The TFT includes a gate electrode, a semiconductor layer comprising a channel region, and a source electrode and a drain electrode spaced apart from one another by a length of the channel region. The TFT substrate further includes a gate insulating layer disposed between the gate electrode and the semiconductor layer and a measuring pattern configured to measure a length of the channel region.Type: ApplicationFiled: December 21, 2015Publication date: October 6, 2016Inventors: Yong Tae Cho, Joong Tae Kim, In Woo Kim, Kwang Su Park, Da Young Lee, Min Ha Hwang, Seong Jun Hwang
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Publication number: 20160109750Abstract: A liquid crystal display device according to the present invention includes: a first substrate; a first color filter and a second color filter provided on the first substrate and including an overlapping portion where at least parts of the first and second color filters overlap each other; and a light blocking member formed between the first substrate and the overlapping portion, wherein the light blocking member includes a recessed portion corresponding to the overlapping portion of the first color filter and the second color filter. According to the present invention, the recessed portion is formed in the light blocking member provided in the overlapping portion of two or more color filters to reduce a step difference caused by the overlapping portion of the color filters, thereby preventing an alignment defect.Type: ApplicationFiled: April 8, 2015Publication date: April 21, 2016Inventors: Joong Tae KIM, In Woo KIM, Kwang su PARK, Da Young LEE, Yong Tae CHO, Min Ha HWAHG
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Publication number: 20150154932Abstract: A display device includes a substrate, a gate line connected to a gate driver, a reference voltage line, a data line crossing the gate line and the reference voltage line, a first thin film transistor including a first drain electrode and connected to the gate line and the data line, a second thin film transistor including a second drain electrode, a third thin film transistor connected to the gate line, the reference voltage line, and the second thin film transistor, and a pixel electrode including a first sub-pixel electrode connected to the first thin film transistor and a second sub-pixel electrode connected to the second thin film transistor. The first drain electrode overlaps the reference voltage line, and an area of a region in which the first drain electrode and the reference voltage line overlap each other increases in a direction toward the gate driver.Type: ApplicationFiled: March 19, 2014Publication date: June 4, 2015Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: SEUNG KYU LEE, Woo Sung Sohn, Yong Tae Cho
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Patent number: 8993396Abstract: A method for fabricating a capacitor includes forming a mold structure over a substrate, wherein the mold structure has a plurality of open parts and has a mold layer stacked with a support layer; forming cylinder type lower electrodes in the open parts; forming a first upper electrode over an entire surface of a structure including the cylinder type lower electrodes to fill the cylinder type lower electrodes; defining a through hole that passes through portions of the first upper electrode and the support layer; removing the mold layer through the through hole and exposing the cylinder type lower electrodes; forming a second upper electrode to fill the through hole and spaces between the cylinder type lower electrodes; and forming a third upper electrode to connect the second upper electrode and the first upper electrode with each other.Type: GrantFiled: August 27, 2012Date of Patent: March 31, 2015Assignee: SK Hynix Inc.Inventors: Jong-Kook Park, Yong-Tae Cho
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Patent number: 8604561Abstract: In a semiconductor device and related method of fabricating the same, a hard mask layer is formed over a substrate, portions of the hard mask layer and the substrate are etched to form trenches having protruding portions at sidewalls, and an insulation layer buried in the trenches is formed to form device isolation regions having protruding portions at sidewalls, wherein the device isolation regions decrease a portion of a width of active regions.Type: GrantFiled: July 15, 2011Date of Patent: December 10, 2013Assignee: Hynix Semiconductor Inc.Inventors: Yong-Tae Cho, Hae-Jung Lee, Eun-Mi Kim, Kyeong-Hyo Lee
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Publication number: 20130299942Abstract: A method for fabricating a capacitor includes forming a mold structure over a substrate, wherein the mold structure has a plurality of open parts and has a mold layer stacked with a support layer; forming cylinder type lower electrodes in the open parts; forming a first upper electrode over an entire surface of a structure including the cylinder type lower electrodes to fill the cylinder type lower electrodes; defining a through hole that passes through portions of the first upper electrode and the support layer; removing the mold layer through the through hole and exposing the cylinder type lower electrodes; forming a second upper electrode to fill the through hole and spaces between the cylinder type lower electrodes; and forming a third upper electrode to connect the second upper electrode and the first upper electrode with each other.Type: ApplicationFiled: August 27, 2012Publication date: November 14, 2013Inventors: Jong-Kook PARK, Yong-Tae Cho
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Patent number: 8487399Abstract: In a semiconductor device and related method of fabricating the same, a hard mask layer is formed over a substrate, portions of the hard mask layer and the substrate are etched to form trenches having protruding portions at sidewalls, and an insulation layer buried in the trenches is formed to form device isolation regions having protruding portions at sidewalls, wherein the device isolation regions decrease a portion of a width of active regions.Type: GrantFiled: July 15, 2011Date of Patent: July 16, 2013Assignee: Hynix Semiconductor Inc.Inventors: Yong-Tae Cho, Hae-Jung Lee, Eun-Mi Kim, Kyeong-Hyo Lee
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Publication number: 20110266648Abstract: In a semiconductor device and related method of fabricating the same, a hard mask layer is formed over a substrate, portions of the hard mask layer and the substrate are etched to form trenches having protruding portions at sidewalls, and an insulation layer buried in the trenches is formed to form device isolation regions having protruding portions at sidewalls, wherein the device isolation regions decrease a portion of a width of active regions.Type: ApplicationFiled: July 15, 2011Publication date: November 3, 2011Applicant: HYNIX SEMICONDUCTOR INC.Inventors: Yong-Tae CHO, Hae-Jung LEE, Eun-Mi KIM, Kyeong-Hyo LEE
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Publication number: 20110266634Abstract: In a semiconductor device and related method of fabricating the same, a hard mask layer is formed over a substrate, portions of the hard mask layer and the substrate are etched to form trenches having protruding portions at sidewalls, and an insulation layer buried in the trenches is formed to form device isolation regions having protruding portions at sidewalls, wherein the device isolation regions decrease a portion of a width of active regions.Type: ApplicationFiled: July 15, 2011Publication date: November 3, 2011Applicant: HYNIX SEMICONDUCTOR INC.Inventors: Yong-Tae CHO, Hae-Jung LEE, Eun-Mi KIM, Kyeong-Hyo LEE
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Patent number: 8003485Abstract: In a semiconductor device and related method of fabricating the same, a hard mask layer is formed over a substrate, portions of the hard mask layer and the substrate are etched to form trenches having protruding portions at sidewalls, and an insulation layer buried in the trenches is formed to form device isolation regions having protruding portions at sidewalls, wherein the device isolation regions decrease a portion of a width of active regions.Type: GrantFiled: December 30, 2008Date of Patent: August 23, 2011Assignee: Hynix Semiconductor Inc.Inventors: Yong-Tae Cho, Hae-Jung Lee, Eun-Mi Kim, Kyeong-Hyo Lee