Patents by Inventor Chul-Kyu Kang
Chul-Kyu Kang 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: 12080223Abstract: An emissive display device includes: a light emitting diode; an n-type driving transistor comprising a first driving gate electrode, a first electrode receiving a driving voltage, a second electrode transferring an output current to the anode, and a second driving gate electrode; a second transistor connected to a data line; a third transistor configured to connect the first electrode and the first driving gate electrode of the driving transistor; a storage capacitor comprising a first storage electrode and a second storage electrode connected to the first driving gate electrode; a ninth transistor transferring an overlapping electrode voltage to the second driving gate electrode; an overlapping electrode voltage line crossing the data line and receiving the overlapping electrode voltage; and a shielding electrode at an intersection of the data line and the overlapping electrode voltage line and between the data line and the overlapping electrode voltage line.Type: GrantFiled: February 16, 2023Date of Patent: September 3, 2024Assignee: Samsung Display Co., Ltd.Inventors: Minku Lee, Ji-Hyun Ka, Chul Kyu Kang, Seunghee Lee, Hai-Jung In, Hyeongjun Jin, Hyun Ji Cha
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Patent number: 12069914Abstract: An organic light emitting diode display includes a substrate, a semiconductor layer on the substrate, the semiconductor layer including a doped area and an undoped area, a first insulation layer that covers the semiconductor layer, a first conductor on the first insulation layer, a second insulation layer that covers the first conductor, a second conductor on the second insulation layer, a third insulation layer that covers the second conductor, and a third conductor on the third insulation layer, wherein, in the semiconductor layer that overlaps the first conductor, the doped area is between undoped areas.Type: GrantFiled: November 22, 2021Date of Patent: August 20, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sung Hwan Kim, Won Kyu Kwak, Sang Moo Choi, Ji-Hyun Ka, Chul Kyu Kang, Dong Wook Kim, Won Se Lee
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Publication number: 20240274068Abstract: A scan driver includes: a first transistor having a first electrode coupled to an output scan line, a second electrode coupled to a first power line, and a gate electrode coupled to a first node; a second transistor having a first electrode coupled to a first clock line, a second electrode coupled to the output scan line, and a gate electrode coupled to a second node; a third transistor having a first electrode coupled to the first node, a second electrode coupled to a first input scan line, and a gate electrode coupled to a second clock line; and a fourth transistor having a first electrode coupled to the second node and a second electrode and a gate electrode, which are coupled to a second input scan line, wherein the first input scan line and the second input scan line are different from each other.Type: ApplicationFiled: April 22, 2024Publication date: August 15, 2024Inventors: Chul Kyu KANG, Sung Hwan KIM, Soo Hee OH, Dong Sun LEE, Sang Moo CHOI
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Patent number: 12060485Abstract: The present invention relates to a non-coating thermoplastic resin composition, a method for manufacturing a molded article by using the same, and a molded article manufactured by the same. More specifically, the present invention is characterized by providing the thermoplastic resin composition which contains polycarbonate, polysiloxane-polycarbonate copolymer, polyester, master-batched carbon black, and additives in specific contents and the molded article, which has excellent chemical resistance, mechanical properties, light resistance, hydrolysis resistance, and low glossiness, manufactured by using the same.Type: GrantFiled: December 1, 2020Date of Patent: August 13, 2024Assignees: Hyundai Motor Company, Kia Motors Corporation, Samyang CorporationInventors: Seul Yi, Boo Youn An, Dae Sik Kim, Kyeong Hoon Jang, Min Woo Kwon, In Soo Han, Jin Gi Ahn, Do Young Bae, Hyung Jin Roh, Tae Jin An, Jung Kyu Han, Chul Jin Jo, Si Uk Cheon, Suk Woo Kang
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Publication number: 20240224771Abstract: A display device includes a pixel electrode; a pixel circuit connected to the pixel electrode; a repair line overlapping at least a part of the pixel circuit; and a shielding line overlapping at least a part of the repair line and connected to a constant power source.Type: ApplicationFiled: August 23, 2023Publication date: July 4, 2024Inventors: Su Jin KIM, Ji Hyun KA, Sung Chan HWANG, Chul Kyu KANG, Dong Hyun KIM, Min Joo KIM, Seon Kyoon MOK
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Publication number: 20240224642Abstract: The present disclosure relates to a display device. According to an embodiment of the disclosure, a display device including a first pixel which includes a first gate node including a first vertical portion and a first horizontal portion, and a first pixel electrode, and a second pixel which includes a second gate node including a second vertical portion and a second horizontal portion, and a second pixel electrode, wherein at least a part of each of the first horizontal portion and the second horizontal portion is disposed between facing surfaces of the first pixel electrode and the second pixel electrode so as not to overlap the first and second pixel electrodes.Type: ApplicationFiled: August 28, 2023Publication date: July 4, 2024Inventors: Seon Kyoon MOK, Sung Chan HWANG, Chul Kyu KANG, Dong Hyun KIM, Su Jin KIM, Seon I JEONG, Chae Han HYUN
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Publication number: 20240221669Abstract: An organic light emitting display device driven at a first driving frequency or a second driving frequency lower than the first driving frequency includes pixels coupled to first scan lines, second scan lines, and data lines, a first scan driver configured to supply scan signals to the first scan lines during a first period and a second period in one frame period, when the organic light emitting display device is driven at the second driving frequency, a second scan driver configured to supply scan signals to the second scan lines during the first period, when the organic light emitting display device is driven at the second driving frequency, and a data driver configured to supply a data signal to the data lines during the first period.Type: ApplicationFiled: March 18, 2024Publication date: July 4, 2024Inventors: Yong Jae KIM, Jin JEON, Chul Kyu KANG
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Publication number: 20240188329Abstract: A display apparatus includes a substrate including a display area for displaying an image, a first thin film transistor in the display area and including a first semiconductor layer having a silicon semiconductor and a first gate electrode insulated from the first semiconductor layer, a first interlayer insulating layer covering the first gate electrode and having a first contact hole extending therethrough, and a second thin film transistor on the first interlayer insulating layer and including a second semiconductor layer having an oxide semiconductor and a second gate electrode insulated from the second semiconductor layer. A portion of the second semiconductor layer extends into a first contact hole and is electrically connected to the first semiconductor layer.Type: ApplicationFiled: February 9, 2024Publication date: June 6, 2024Applicant: Samsung Display Co., Ltd.Inventors: Kiwook KIM, Chul kyu KANG, Wonkyu KWAK, Kwangmin KIM, Joongsoo MOON
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Patent number: 11967269Abstract: A scan driver includes: a first transistor having a first electrode coupled to an output scan line, a second electrode coupled to a first power line, and a gate electrode coupled to a first node; a second transistor having a first electrode coupled to a first clock line, a second electrode coupled to the output scan line, and a gate electrode coupled to a second node; a third transistor having a first electrode coupled to the first node, a second electrode coupled to a first input scan line, and a gate electrode coupled to a second clock line; and a fourth transistor having a first electrode coupled to the second node and a second electrode and a gate electrode, which are coupled to a second input scan line, wherein the first input scan line and the second input scan line are different from each other.Type: GrantFiled: October 4, 2022Date of Patent: April 23, 2024Assignee: Samsung Display Co., Ltd.Inventors: Chul Kyu Kang, Sung Hwan Kim, Soo Hee Oh, Dong Sun Lee, Sang Moo Choi
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Publication number: 20240099085Abstract: A display device includes a pixel. The pixel is electrically connected to a first power line, a second power line, and a data line. The pixel includes a first transistor, and a capacitor electrically connected between a gate electrode of the first transistor and an electrode of the first transistor. In a plan view, the data line extends in a second direction. The first power line extends in a first direction intersecting the second direction and overlaps the data line and the gate electrode of the first transistor. The second power line extends in the second direction, overlaps the data line, and overlaps the gate electrode of the first transistor.Type: ApplicationFiled: August 8, 2023Publication date: March 21, 2024Applicant: Samsung Display Co., LTD.Inventors: Sung Chan HWANG, Dong Hyun KIM, Chul Kyu KANG, Hey Jin SHIN, Seo Won CHOE, Chae Han HYUN
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Patent number: 11937456Abstract: A display apparatus includes a substrate including a display area for displaying an image, a first thin film transistor in the display area and including a first semiconductor layer having a silicon semiconductor and a first gate electrode insulated from the first semiconductor layer, a first interlayer insulating layer covering the first gate electrode and having a first contact hole extending therethrough, and a second thin film transistor on the first interlayer insulating layer and including a second semiconductor layer having an oxide semiconductor and a second gate electrode insulated from the second semiconductor layer. A portion of the second semiconductor layer extends into a first contact hole and is electrically connected to the first semiconductor layer.Type: GrantFiled: May 17, 2021Date of Patent: March 19, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Kiwook Kim, Chul kyu Kang, Wonkyu Kwak, Kwangmin Kim, Joongsoo Moon
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Patent number: 11935471Abstract: An organic light emitting display device driven at a first driving frequency or a second driving frequency lower than the first driving frequency includes pixels coupled to first scan lines, second scan lines, and data lines, a first scan driver configured to supply scan signals to the first scan lines during a first period and a second period in one frame period, when the organic light emitting display device is driven at the second driving frequency, a second scan driver configured to supply scan signals to the second scan lines during the first period, when the organic light emitting display device is driven at the second driving frequency, and a data driver configured to supply a data signal to the data lines during the first period.Type: GrantFiled: March 7, 2022Date of Patent: March 19, 2024Assignee: Samsung Display Co., Ltd.Inventors: Yong Jae Kim, Jin Jeon, Chul Kyu Kang
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Patent number: 11900890Abstract: A display device includes: scan, control, and emission control signal lines, signals transmitted thereby being different from one another; data and driving voltage lines; a first transistor including a first gate electrode and first source and drain; a second transistor including a second gate electrode connected to a first scan line, a second source connected to a first data line, and a second drain connected to the first source; a light-emitting element; a control transistor including a control gate electrode connected to a first control line and between the driving voltage line and the first source or the light-emitting element and the first drain; and an emission control transistor in series between the light-emitting element and the control transistor, the control transistor and the first transistor, or the driving voltage line and the control transistor, and an emission control gate electrode connected to the emission control signal line.Type: GrantFiled: December 5, 2022Date of Patent: February 13, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sung Hwan Kim, Chul Kyu Kang, Hyun-Chol Bang, Soo Hee Oh, Dong Sun Lee
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Publication number: 20230395032Abstract: A circuit stage including a first transistor including a first electrode and a gate electrode, the first electrode being coupled to a first input terminal and the gate electrode being coupled to a second input terminal configured to receive a first clock signal, an output circuit coupled to the second input terminal and a second power input terminal, an input circuit coupled to a second electrode of the first transistor and to a third input terminal, the third input terminal being configured to receive a first control clock signal, the input circuit being configured to control voltages of the second node and a third node, a first driving circuit coupled to a first power input terminal and to a fourth input terminal configured to receive a second control clock signal, and a second driving circuit coupled to the fourth input terminal and the third node.Type: ApplicationFiled: August 21, 2023Publication date: December 7, 2023Inventors: Chul Kyu KANG, Yong Sung PARK, Jin Woo PARK, Dong Sun LEE
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Publication number: 20230326399Abstract: An emissive display device includes: a light emitting diode; an n-type driving transistor comprising a first driving gate electrode, a first electrode receiving a driving voltage, a second electrode transferring an output current to the anode, and a second driving gate electrode; a second transistor connected to a data line; a third transistor configured to connect the first electrode and the first driving gate electrode of the driving transistor; a storage capacitor comprising a first storage electrode and a second storage electrode connected to the first driving gate electrode; a ninth transistor transferring an overlapping electrode voltage to the second driving gate electrode; an overlapping electrode voltage line crossing the data line and receiving the overlapping electrode voltage; and a shielding electrode at an intersection of the data line and the overlapping electrode voltage line and between the data line and the overlapping electrode voltage line.Type: ApplicationFiled: February 16, 2023Publication date: October 12, 2023Inventors: MINKU LEE, Ji-Hyun KA, Chul Kyu KANG, SEUNGHEE LEE, Hai-Jung IN, HYEONGJUN JIN, Hyun Ji CHA
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Patent number: 11735117Abstract: A circuit stage including a first transistor including a first electrode and a gate electrode, the first electrode being coupled to a first input terminal and the gate electrode being coupled to a second input terminal configured to receive a first clock signal, an output circuit coupled to the second input terminal and a second power input terminal, an input circuit coupled to a second electrode of the first transistor and to a third input terminal, the third input terminal being configured to receive a first control clock signal, the input circuit being configured to control voltages of the second node and a third node, a first driving circuit coupled to a first power input terminal and to a fourth input terminal configured to receive a second control clock signal, and a second driving circuit coupled to the fourth input terminal and the third node.Type: GrantFiled: May 14, 2018Date of Patent: August 22, 2023Assignee: Samsung Display Co., Ltd.Inventors: Chul Kyu Kang, Yong Sung Park, Jin Woo Park, Dong Sun Lee
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Publication number: 20230116848Abstract: A display device includes: scan, control, and emission control signal lines, signals transmitted thereby being different from one another; data and driving voltage lines; a first transistor including a first gate electrode and first source and drain; a second transistor including a second gate electrode connected to a first scan line, a second source connected to a first data line, and a second drain connected to the first source; a light-emitting element; a control transistor including a control gate electrode connected to a first control line and between the driving voltage line and the first source or the light-emitting element and the first drain; and an emission control transistor in series between the light-emitting element and the control transistor, the control transistor and the first transistor, or the driving voltage line and the control transistor, and an emission control gate electrode connected to the emission control signal line.Type: ApplicationFiled: December 5, 2022Publication date: April 13, 2023Applicant: Samsung Display Co., Ltd.Inventors: Sung Hwan KIM, Chul Kyu KANG, Hyun-Chol BANG, Soo Hee OH, Dong Sun LEE
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Publication number: 20230022857Abstract: A scan driver includes: a first transistor having a first electrode coupled to an output scan line, a second electrode coupled to a first power line, and a gate electrode coupled to a first node; a second transistor having a first electrode coupled to a first clock line, a second electrode coupled to the output scan line, and a gate electrode coupled to a second node; a third transistor having a first electrode coupled to the first node, a second electrode coupled to a first input scan line, and a gate electrode coupled to a second clock line; and a fourth transistor having a first electrode coupled to the second node and a second electrode and a gate electrode, which are coupled to a second input scan line, wherein the first input scan line and the second input scan line are different from each other.Type: ApplicationFiled: October 4, 2022Publication date: January 26, 2023Inventors: Chul Kyu KANG, Sung Hwan KIM, Soo Hee OH, Dong Sun LEE, Sang Moo CHOI
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Publication number: 20230017548Abstract: A stage and a scan driver including the same for supplying a scan signal using a stage formed of P-type transistors to prevent output of an unwanted noise in a period where the scan signal is not supplied.Type: ApplicationFiled: September 16, 2022Publication date: January 19, 2023Inventors: Soo Hee OH, Chul Kyu Kang, Dong Sun Lee, Sang Moo Choi
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Patent number: 11521561Abstract: A display device includes: scan, control, and emission control signal lines, signals transmitted thereby being different from one another; data and driving voltage lines; a first transistor including a first gate electrode and first source and drain; a second transistor including a second gate electrode connected to a first scan line, a second source connected to a first data line, and a second drain connected to the first source; a light-emitting element; a control transistor including a control gate electrode connected to a first control line and between the driving voltage line and the first source or the light-emitting element and the first drain; and an emission control transistor in series between the light-emitting element and the control transistor, the control transistor and the first transistor, or the driving voltage line and the control transistor, and an emission control gate electrode connected to the emission control signal line.Type: GrantFiled: August 6, 2021Date of Patent: December 6, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sung Hwan Kim, Chul Kyu Kang, Hyun-Chol Bang, Soo Hee Oh, Dong Sun Lee