Patents by Inventor Hanbit Kim
Hanbit Kim 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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Publication number: 20260130048Abstract: A display panel includes a pixel circuit arranged on a substrate and including a thin-film transistor, a capacitor, and a double contact hole, and a light-emitting element electrically connected to the pixel circuit, wherein the double contact hole includes a lower contact hole defined in a first insulating layer, a lower conductive layer arranged on a top surface of the first insulating layer and inside the lower contact hole, an inorganic material filled in a recess provided in the lower conductive layer by the lower contact hole, an intermediate conductive layer arranged on the lower conductive layer and the inorganic material, an upper contact hole defined in a second insulating layer on the first insulating layer, and an upper conductive layer arranged on a top surface of the second insulating layer and inside the upper contact hole and connected to the intermediate conductive layer.Type: ApplicationFiled: October 30, 2025Publication date: May 7, 2026Inventors: Nguyen Thanh Tien, Doona Kim, Hanbit Kim, Sungwook Woo, Dokyeong Lee, Myounggeun Cha, Sanggun Choi
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Publication number: 20260090235Abstract: A display panel includes first and second light-emitting elements including a first electrode including a reflection layer and a metal oxide layer, an emission unit configured to generate first, second, and third color light, and a second electrode above the emission unit, the metal oxide layer of the second light-emitting element being thicker than the metal oxide layer of the first light-emitting element, wherein a difference between respective distances from an upper surface of the reflection layer of the first electrode to a lower surface the second electrode in the first and second light-emitting elements is substantially equal to a difference between a thickness of the metal oxide layer of the first light-emitting element and a thickness of the metal oxide layer of the second light-emitting element.Type: ApplicationFiled: June 6, 2025Publication date: March 26, 2026Inventors: HANBIT KIM, MEEJAE KANG, JIYEONG SHIN, DOKYEONG LEE, KISEOK CHOI, SANGGUN CHOI
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Publication number: 20260080825Abstract: A pixel includes a first transistor for controlling a driving current for light-emission of a light-emitting element, a second transistor for controlling a signal applied to a gate terminal of the first transistor by being turned on and off by a scan signal, and a storage capacitor, wherein either a data signal or a first driving voltage is selectively applied.Type: ApplicationFiled: April 16, 2025Publication date: March 19, 2026Inventors: HANBIT KIM, THANH TIEN NGUYEN, DOO-NA KIM, JIYEONG SHIN, DOKYEONG LEE, SANGGUN CHOI
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Publication number: 20260057835Abstract: A display apparatus includes a plurality of pixels connected to gate control lines and data lines. Each of the plurality of pixels may include first to third display elements emitting light of different colors, a first transistor having a gate connected to a first node, a first terminal connected to a first voltage line, and a second terminal connected to a second node, a first emission control transistor connected between the second node and the first display element, a second emission control transistor connected between the second node and the second display element, and a third emission control transistor connected between the second node and the third display element. A same emission control signal may be supplied to the corresponding emission control transistor included in each of the plurality of pixels.Type: ApplicationFiled: August 20, 2025Publication date: February 26, 2026Inventors: Hanbit Kim, Meejae Kang, Jiyeong Shin, Yunjung Oh, Kiseok Choi, Sanggun Choi
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Patent number: 12557502Abstract: Provided are a pixel in which pixel circuits of a plurality of rows of the same column share a capacitor, and a display apparatus including the same.Type: GrantFiled: December 20, 2024Date of Patent: February 17, 2026Assignee: Samsung Display Co., Ltd.Inventors: Hanbit Kim, Hyena Kwak, Jiyeong Shin, Yunjung Oh, Dokyeong Lee, Sanggun Choi
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Publication number: 20260024484Abstract: A display driving circuit for a display device includes a pixel receiving a first power supply voltage and a second power supply voltage. The pixel comprises a driving transistor configured to generate a driving current, a data writing transistor configured to provide a data voltage to the driving transistor, and a light-emitting element configured to emit light based on the driving current. A display controller controls the first and second power supply voltages during an emission period of a frame period. The emission period includes sub-emission periods in which the pixel emits light and black insertion periods in which the pixel does not emit light, alternating with one another. The display driving circuit adjusts the power supply voltages to regulate the transitions between these periods, coordinating the operation of the pixel within the frame period.Type: ApplicationFiled: March 14, 2025Publication date: January 22, 2026Inventors: HANBIT KIM, MEEJAE KANG, JIYEONG SHIN, YUNJUNG OH, DOKYEONG LEE, KISEOK CHOI, SANGGUN CHOI, TAEHYUN HONG
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Patent number: 12421052Abstract: Provided is an overhead hoist transport device including an article transport vehicle having a space in which articles are loaded and unloaded, and including traveling wheels, guide wheels, and steering wheels, a traveling rail positioned along a ceiling of a semiconductor manufacturing line and providing a moving path for the article transport vehicle, a measuring sensor attached to the article transport vehicle and configured to measure a traveling state of the article transport vehicle, and a system configured to receive measured values from the measuring sensor, wherein the traveling rail includes at least one traveling section among a straight section, a curved section, and a branching section, and wherein the system is further configured to determine whether specific wheels of the article transport vehicle are detached on the traveling rail.Type: GrantFiled: October 3, 2023Date of Patent: September 23, 2025Assignee: SEMES CO., LTD.Inventors: Hanbit Kim, Daeil Jang, Jongseon Jeon, Jungdae Kim, Hyojoo Jeoun
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Publication number: 20250127001Abstract: Provided are a pixel in which pixel circuits of a plurality of rows of the same column share a capacitor, and a display apparatus including the same.Type: ApplicationFiled: December 20, 2024Publication date: April 17, 2025Inventors: Hanbit Kim, Hyena Kwak, Jiyeong Shin, Yunjung Oh, Dokyeong Lee, Sanggun Choi
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Patent number: 12262589Abstract: A pixel includes: a driving transistor including a semiconductor layer and a gate electrode; and a compensation transistor connected to the gate electrode and the semiconductor layer of the driving transistor, wherein the first thin-film transistor includes: a first sub-transistor including a first gate electrode receiving a first scan signal having a first voltage level during a period; and a second sub-transistor connected to the first sub-transistor in parallel and comprising a second gate electrode receiving a second scan signal having a second voltage level that is an inverted level of the first voltage level during the same period.Type: GrantFiled: October 26, 2020Date of Patent: March 25, 2025Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Keunwoo Kim, Hyena Kwak, Sangsub Kim, Hanbit Kim
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Patent number: 12213361Abstract: Provided are a pixel in which pixel circuits of a plurality of rows of the same column share a capacitor, and a display apparatus including the same.Type: GrantFiled: September 28, 2023Date of Patent: January 28, 2025Assignee: Samsung Display Co., Ltd.Inventors: Hanbit Kim, Hyena Kwak, Jiyeong Shin, Yunjung Oh, Dokyeong Lee, Sanggun Choi
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Patent number: 12120919Abstract: A method of manufacturing a display apparatus includes forming a first photosensitive pattern and a second photosensitive pattern of different thicknesses on an active layer; forming a driving semiconductor layer and a compensation semiconductor layer using the first photosensitive pattern and the second photosensitive pattern as masks to etch the active layer; exposing an upper surface of the driving semiconductor layer by etching the first photosensitive pattern and forming a third photosensitive pattern by etching at least a portion of the second photosensitive pattern; forming a first insulating layer on the driving semiconductor layer and the third photosensitive pattern; exposing an upper surface of the compensation semiconductor layer by stripping the third photosensitive pattern; and forming a second insulating layer on the first insulating layer and the compensation semiconductor layer.Type: GrantFiled: February 24, 2022Date of Patent: October 15, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jaehwan Chu, Meejae Kang, Keunwoo Kim, Doona Kim, Sangsub Kim, Hanbit Kim, Dokyeong Lee, Yongsu Lee
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Patent number: 12112705Abstract: A pixel includes an organic light-emitting diode, a driving transistor, a first dual gate transistor, a first capacitor, and a compensation transistor. The organic light-emitting diode includes first and second terminals. The driving transistor generates the driving current and includes a first terminal to which a first power supply voltage is applied, a second terminal connected to the first terminal of the organic light-emitting diode, and a gate terminal. The first dual gate transistor is connected between the gate terminal of the driving transistor and the second terminal of the driving transistor and includes first and second sub-transistors. The first capacitor includes a first electrode to which the first power supply voltage is applied, and a second electrode connected to a first node that connects the first and second sub-transistors to each other. The compensation transistor includes a terminal connected between the second electrode and the first node.Type: GrantFiled: October 3, 2023Date of Patent: October 8, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hanbit Kim, Taewook Kang, Doo-Na Kim, Sangsub Kim, Yunjung Oh, Dokyeong Lee, Jaehwan Chu
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Publication number: 20240324288Abstract: A display apparatus includes a first thin-film transistor in a display area, and including a first semiconductor layer and a first gate electrode, the first semiconductor layer including a silicon semiconductor, a second thin-film transistor on the first thin-film transistor, and including a second semiconductor layer and a second gate electrode, the second semiconductor layer including an oxide semiconductor, a third thin-film transistor on the first thin-film transistor, and including a third semiconductor layer and a third gate electrode, the third semiconductor layer including an oxide semiconductor, a bridge metal layer between the first thin-film transistor and the second thin-film transistor and electrically connected to the first semiconductor layer through a first contact hole, and a first conductive pattern layer on the second gate electrode of the second thin-film transistor, and the bridge metal layer is electrically connected to the first conductive pattern layer through a second contact hole.Type: ApplicationFiled: February 21, 2024Publication date: September 26, 2024Applicant: Samsung Display Co., Ltd.Inventors: Sunhwa Lee, Junhyun Park, Hyeongseok Kim, Heejean Park, Hanbit Kim
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Patent number: 12062334Abstract: A pixel may include a light emitting diode which includes an anode and a cathode, a first transistor which includes a first source region, a first drain region electrically connected to the anode, a first channel region, and a first gate electrode, a first sub-transistor which includes a first sub-source region connected to the first drain region, a first sub-drain region, a first sub-channel region, and a first sub-gate electrode, a second sub-transistor which includes a second sub-source region connected to the first sub-drain region, a second sub-drain region connected to the first gate electrode, a second sub-channel region, and a second sub-gate electrode, a storage line which overlaps the first sub-drain region and the second sub-source region, and a first hold pattern which overlaps the first sub-drain region, the second sub-source region, and the storage line, and connected to the first sub-drain region and the second sub-source region.Type: GrantFiled: April 27, 2023Date of Patent: August 13, 2024Assignee: Samsung Display Co., Ltd.Inventors: Hanbit Kim, Sungwook Kim, Chanyeob Seol, Yunjung Oh, Jeong-Soo Lee, Jina Lee, Seongbaik Chu
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Publication number: 20240174451Abstract: Provided is an overhead hoist transport device including an article transport vehicle having a space in which articles are loaded and unloaded, and including traveling wheels, guide wheels, and steering wheels, a traveling rail positioned along a ceiling of a semiconductor manufacturing line and providing a moving path for the article transport vehicle, a measuring sensor attached to the article transport vehicle and configured to measure a traveling state of the article transport vehicle, and a system configured to receive measured values from the measuring sensor, wherein the traveling rail includes at least one traveling section among a straight section, a curved section, and a branching section, and wherein the system is further configured to determine whether specific wheels of the article transport vehicle are detached on the traveling rail.Type: ApplicationFiled: October 3, 2023Publication date: May 30, 2024Inventors: Hanbit KIM, Daeil JANG, Jongseon JEON, Jungdae KIM, Hyojoo JEOUN
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Publication number: 20240147790Abstract: Provided are a pixel in which pixel circuits of a plurality of rows of the same column share a capacitor, and a display apparatus including the same.Type: ApplicationFiled: September 28, 2023Publication date: May 2, 2024Inventors: Hanbit Kim, Hyena Kwak, Jiyeong Shin, Yunjung Oh, Dokyeong Lee, Sanggun Choi
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Publication number: 20240078973Abstract: A pixel may include a light emitting diode which includes an anode and a cathode, a first transistor which includes a first source region, a first drain region electrically connected to the anode, a first channel region, and a first gate electrode, a first sub-transistor which includes a first sub-source region connected to the first drain region, a first sub-drain region, a first sub-channel region, and a first sub-gate electrode, a second sub-transistor which includes a second sub-source region connected to the first sub-drain region, a second sub-drain region connected to the first gate electrode, a second sub-channel region, and a second sub-gate electrode, a storage line which overlaps the first sub-drain region and the second sub-source region, and a first hold pattern which overlaps the first sub-drain region, the second sub-source region, and the storage line, and connected to the first sub-drain region and the second sub-source region.Type: ApplicationFiled: April 27, 2023Publication date: March 7, 2024Inventors: HANBIT KIM, SUNGWOOK KIM, CHANYEOB SEOL, YUNJUNG OH, JEONG-SOO LEE, JINA LEE, SEONGBAIK CHU
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Publication number: 20240079420Abstract: A display device includes a transistor including an active layer including first and second active areas, where the first active area includes a first drain area, a source area, and a first channel area between the source area and the first drain area, and the second active area includes the source area, a second drain area, and a second channel area between the source area and the second drain area, a gate insulating layer on the active layer, first and second charge layers at an interface between the first channel area and the gate insulating layer and at an interface between the second channel area and the gate insulating layer, where the first charge layer is adjacent to the source area, and the second charge layer is adjacent to the first and second drain areas and has a charge opposite to a charge of a first charge layer.Type: ApplicationFiled: July 27, 2023Publication date: March 7, 2024Inventors: KEUNWOO KIM, TAEWOOK KANG, DOO-NA KIM, HANBIT KIM, JIYEONG SHIN, JUN HYUNG LIM
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Publication number: 20240029655Abstract: A pixel includes an organic light-emitting diode, a driving transistor, a first dual gate transistor, a first capacitor, and a compensation transistor. The organic light-emitting diode includes first and second terminals. The driving transistor generates the driving current and includes a first terminal to which a first power supply voltage is applied, a second terminal connected to the first terminal of the organic light-emitting diode, and a gate terminal. The first dual gate transistor is connected between the gate terminal of the driving transistor and the second terminal of the driving transistor and includes first and second sub-transistors. The first capacitor includes a first electrode to which the first power supply voltage is applied, and a second electrode connected to a first node that connects the first and second sub-transistors to each other. The compensation transistor includes a terminal connected between the second electrode and the first node.Type: ApplicationFiled: October 3, 2023Publication date: January 25, 2024Inventors: HANBIT KIM, TAEWOOK KANG, DOO-NA KIM, SANGSUB KIM, YUNJUNG OH, DOKYEONG LEE, JAEHWAN CHU
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Patent number: 11810511Abstract: A pixel includes an organic light-emitting diode, a driving transistor, a first dual gate transistor, a first capacitor, and a compensation transistor. The organic light-emitting diode includes first and second terminals. The driving transistor generates the driving current and includes a first terminal to which a first power supply voltage is applied, a second terminal connected to the first terminal of the organic light-emitting diode, and a gate terminal. The first dual gate transistor is connected between the gate terminal of the driving transistor and the second terminal of the driving transistor and includes first and second sub-transistors. The first capacitor includes a first electrode to which the first power supply voltage is applied, and a second electrode connected to a first node that connects the first and second sub-transistors to each other. The compensation transistor includes a terminal connected between the second electrode and the first node.Type: GrantFiled: May 11, 2022Date of Patent: November 7, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hanbit Kim, Taewook Kang, Doo-Na Kim, Sangsub Kim, Yunjung Oh, Dokyeong Lee, Jaehwan Chu