Patents by Inventor Myounggeun Cha
Myounggeun Cha 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: 20240334740Abstract: Provided are a display panel and an electronic apparatus including the display panel. The display panel includes a substrate including a polymer resin; first and second pixel circuits each including a thin-film transistor, a first light-emitting diode connected to the first pixel circuit and located in a first display area; a second light-emitting diode connected to the second pixel circuit and located in a sub-display area of a second display area, a bottom metal layer in the second display area and between the substrate and the second pixel circuit; and a protective layer between the substrate and the bottom metal layer and corresponding to the first and second display areas, wherein the bottom metal layer includes a first opening in a transmissive area, and the protective layer includes a second opening in the transmissive area and overlapping the first opening of the bottom metal layer.Type: ApplicationFiled: June 11, 2024Publication date: October 3, 2024Inventors: Myounggeun Cha, Sanggun Choi, Jiyeong Shin, Kiseok Choi
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Publication number: 20240324349Abstract: A display apparatus includes a first transistor including a first semiconductor layer including a silicon semiconductor and a first gate electrode below the first semiconductor layer, where the first transistor controls a magnitude of a driving current flowing to a display element, a data line which transmits a data voltage, a second transistor including a second semiconductor layer including an oxide semiconductor, where the second transistor connects the data line to the first transistor in response to a scan signal, and a first capacitor including a first electrode and a second electrode, where the first electrode is disposed on the first semiconductor layer, and the second electrode at least partially overlaps the first electrode.Type: ApplicationFiled: December 8, 2023Publication date: September 26, 2024Inventors: Myounggeun CHA, Sanggun CHOI, Keunwoo KIM
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Publication number: 20240284705Abstract: A display apparatus includes: a first substrate including a polymer resin; a first barrier layer on the first substrate and including a portion doped with ions, wherein the portion includes an upper surface of the first barrier layer; a second substrate on the upper surface of the first barrier layer and including a polymer resin; a buffer layer on the second substrate; a first thin-film transistor on the buffer layer; and a light-emitting diode electrically connected to the first thin-film transistor.Type: ApplicationFiled: October 13, 2023Publication date: August 22, 2024Inventors: Kiseok Choi, Myounggeun Cha, Jongjun Baek, Heekyun Shin, Yonghoon Yang
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Patent number: 12048196Abstract: Provided are a display panel and an electronic apparatus including the display panel. The display panel includes a substrate including a polymer resin; first and second pixel circuits each including a thin-film transistor, a first light-emitting diode connected to the first pixel circuit and located in a first display area; a second light-emitting diode connected to the second pixel circuit and located in a sub-display area of a second display area, a bottom metal layer in the second display area and between the substrate and the second pixel circuit; and a protective layer between the substrate and the bottom metal layer and corresponding to the first and second display areas, wherein the bottom metal layer includes a first opening in a transmissive area, and the protective layer includes a second opening in the transmissive area and overlapping the first opening of the bottom metal layer.Type: GrantFiled: December 29, 2021Date of Patent: July 23, 2024Assignee: Samsung Display Co., Ltd.Inventors: Myounggeun Cha, Sanggun Choi, Jiyeong Shin, Kiseok Choi
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Publication number: 20240162404Abstract: A display device is disclosed that includes a substrate, a display portion, a conductive layer, an inorganic layer, and an amorphous silicon layer. The substrate includes a first area including a transmission area and a non-transmission area adjacent to the transmission area, and a second area adjacent to the first area. The display portion is disposed in the non-transmission area and the second area on the substrate. The conductive layer is disposed between the substrate and the display portion, and overlaps the non-transmission area and the second area. The inorganic layer is disposed on the substrate under the conductive layer, in contact with the conductive layer, and overlaps the conductive layer. The amorphous silicon layer is disposed on the substrate, under the inorganic layer, in contact with the inorganic layer, overlaps the conductive layer in the first area, and entirely overlaps the substrate in the second area.Type: ApplicationFiled: September 11, 2023Publication date: May 16, 2024Inventors: MYOUNGGEUN CHA, KISEOK CHOI, DONGKYUN SEO, HEEKYUN SHIN, YONG-HOON YANG
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Publication number: 20240081100Abstract: A display device includes a substrate, a butter layer and light emitting diodes. The substrate defines a first display area including a first pixel area and a transmission area and a second display area including a second pixel area and surrounding at least a portion of the first display area, and the substrate includes an adhesive layer through which a first opening overlapping the transmission area is defined. The buffer layer is disposed on the substrate, and a second opening overlapping the transmission area is defined through the buffer layer. The light emitting diodes are disposed on the buffer layer and overlap the first and second pixel areas.Type: ApplicationFiled: May 11, 2023Publication date: March 7, 2024Inventors: KISEOK CHOI, HEEKYUN SHIN, YONG-HOON YANG, MYOUNGGEUN CHA
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Patent number: 11864411Abstract: A display apparatus includes a first substrate, a main pixel circuit located on the first substrate and including a first semiconductor layer, an auxiliary pixel circuit located on the first substrate and including a second semiconductor layer, a buffer layer located between the first substrate and the first semiconductor layer and between the first substrate and the second semiconductor layer, and a barrier layer located between the first substrate and the buffer layer, including one material from among silicon nitride (SiNx), aluminum oxide (Al2O3), and zirconium oxide (Zr2O3), and having a density ranging from about 2 g/cm3 to about 6 g/cm3.Type: GrantFiled: November 9, 2020Date of Patent: January 2, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yungbin Chung, Sanggun Choi, Yeoungkeol Woo, Myounggeun Cha, Eunjin Kwak
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Patent number: 11705063Abstract: A display device includes a first transistor including a first channel region, a first gate electrode overlapping the first channel region, and a first electrode connected to a node receiving a driving voltage, a second transistor electrically connected to the first electrode of the first transistor, the second transistor including a second channel region and a second gate electrode overlapping the first channel region and receiving a scan signal, a light emitting element electrically connected to a second electrode of the first transistor, a first conductive line overlapping the first gate electrode with the first channel region in between and receiving a variable voltage different from the driving voltage, and a second conductive line overlapping the second gate electrode with the second channel region in between and receiving the scan signal.Type: GrantFiled: June 10, 2020Date of Patent: July 18, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Myounggeun Cha, Sanggun Choi, Hyena Kwak, Jiyeong Shin, Yongsu Lee, Kiseok Choi
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Publication number: 20230090817Abstract: A display apparatus for displaying a high-resolution image and having a low occurrence rate of defects caused by a voltage drop. The display apparatus includes a substrate, a first conductive layer arranged on the substrate and including an auxiliary data line extending in a first direction, a first semiconductor layer arranged on the first conductive layer, a first gate layer arranged on the first semiconductor layer, a first connection electrode layer arranged on the first gate layer and including a first connection electrode electrically connected to the first semiconductor layer and the auxiliary data line, and a second connection electrode layer arranged on the first connection electrode layer and including a data line electrically connected to the first connection electrode.Type: ApplicationFiled: May 12, 2022Publication date: March 23, 2023Inventors: Myounggeun Cha, Joohee Jeon, Sanggun Choi
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Publication number: 20230023524Abstract: A display device includes: a substrate including a display area including a first pixel area, a component area adjacent to the display area, and a non-display area adjacent to the display area, where the component area includes a second pixel area and a transmission area, and the non-display area includes a bending area; a first inorganic layer continuously arranged in the transmission area on the substrate, where a lower opening overlapping the bending area is defined through the first inorganic layer; a blocking layer on the first inorganic layer, a blocking layer opening overlapping the transmission area and an intermediate opening overlapping the lower opening are defined through the blocking layer; and a display element layer on the blocking layer, where the display element layer includes a first display element overlapping the first pixel area and a second display element overlapping the second pixel area.Type: ApplicationFiled: March 9, 2022Publication date: January 26, 2023Inventors: Subin Bae, Dawoon Jung, Yugwang Jeong, Sungwon Cho, Myounggeun Cha, Sanggun Choi
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Publication number: 20220406877Abstract: A display device includes a first pixel and a second pixel. A light emitting element and a pixel circuit of the second pixel are in a second area. The first pixel includes a silicon transistor and an oxide transistor in the second area. The first pixel includes a connection line that electrically connects one of the silicon transistor and the oxide transistor to a light emitting element in a first area. The connection line is on the same layer as the oxide semiconductor pattern and includes a transparent conductive oxide.Type: ApplicationFiled: May 26, 2022Publication date: December 22, 2022Inventors: MYOUNGGEUN CHA, SOYOUNG KOO, DONGHWAN SHIM, SANGGUN CHOI
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Publication number: 20220399407Abstract: Provided are a display panel and an electronic apparatus including the display panel. The display panel includes a substrate including a polymer resin; first and second pixel circuits each including a thin-film transistor, a first light-emitting diode connected to the first pixel circuit and located in a first display area; a second light-emitting diode connected to the second pixel circuit and located in a sub-display area of a second display area, a bottom metal layer in the second display area and between the substrate and the second pixel circuit; and a protective layer between the substrate and the bottom metal layer and corresponding to the first and second display areas, wherein the bottom metal layer includes a first opening in a transmissive area, and the protective layer includes a second opening in the transmissive area and overlapping the first opening of the bottom metal layer.Type: ApplicationFiled: December 29, 2021Publication date: December 15, 2022Inventors: Myounggeun Cha, Sanggun Choi, Jiyeong Shin, Kiseok Choi
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Patent number: 11455955Abstract: A display device may include a substrate, an organic light emitting element on the substrate, a pixel circuit between the substrate and the organic light emitting element, electrically connected to the organic light emitting element, and including a first transistor and a second transistor, a first metal layer between the substrate and the pixel circuit, overlapping the first transistor, and configured to receive a first voltage, and a second metal layer between the substrate and the pixel circuit, overlapping the second transistor, and configured to receive a second voltage different from the first voltage.Type: GrantFiled: March 29, 2019Date of Patent: September 27, 2022Assignee: Samsung Display Co., Ltd.Inventors: Myounggeun Cha, Sanggun Choi, Jiyeong Shin, Yongsu Lee
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Patent number: 11423839Abstract: A display device may include a substrate, an organic light emitting element on the substrate, a pixel circuit between the substrate and the organic light emitting element, electrically connected to the organic light emitting element, and including a first transistor and a second transistor, a first metal layer between the substrate and the pixel circuit, overlapping the first transistor, and configured to receive a first voltage, and a second metal layer between the substrate and the pixel circuit, overlapping the second transistor, and configured to receive a second voltage different from the first voltage.Type: GrantFiled: March 29, 2019Date of Patent: August 23, 2022Assignee: Samsung Display Co., Ltd.Inventors: Myounggeun Cha, Sanggun Choi, Jiyeong Shin, Yongsu Lee
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Patent number: 11183650Abstract: A display substrate includes a first conductive layer on a base substrate, a first insulation layer on the first conductive layer, a second conductive layer on the first insulation layer, a second insulation layer on the second conductive layer, and a third conductive layer on the second insulation layer. The third conductive layer is connected to the first conductive layer and the second conductive layer through a contact hole passing through the first insulation layer, the second conductive layer, and the second insulation layer. A sidewall of the contact hole has a stepped shape.Type: GrantFiled: November 28, 2018Date of Patent: November 23, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Myounggeun Cha, Sanggun Choi, Meejae Kang, Sanggab Kim, Joon woo Bae, Thanh Tien Nguyen, Kyoungwon Lee, Yongsu Lee
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Publication number: 20210320278Abstract: A display apparatus includes a first substrate, a main pixel circuit located on the first substrate and including a first semiconductor layer, an auxiliary pixel circuit located on the first substrate and including a second semiconductor layer, a buffer layer located between the first substrate and the first semiconductor layer and between the first substrate and the second semiconductor layer, and a barrier layer located between the first substrate and the buffer layer, including one material from among silicon nitride (SiNx), aluminum oxide (Al2O3), and zirconium oxide (Zr2O3), and having a density ranging from about 2 g/cm3 to about 6 g/cm3.Type: ApplicationFiled: November 9, 2020Publication date: October 14, 2021Inventors: Yungbin Chung, Sanggun Choi, Yeoungkeol Woo, Myounggeun Cha, Eunjin Kwak
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Publication number: 20210312865Abstract: A display device may include a substrate, an organic light emitting element on the substrate, a pixel circuit between the substrate and the organic light emitting element, electrically connected to the organic light emitting element, and including a first transistor and a second transistor, a first metal layer between the substrate and the pixel circuit, overlapping the first transistor, and configured to receive a first voltage, and a second metal layer between the substrate and the pixel circuit, overlapping the second transistor, and configured to receive a second voltage different from the first voltage.Type: ApplicationFiled: March 29, 2019Publication date: October 7, 2021Inventors: Myounggeun CHA, Sanggun CHOI, Jiyeong SHIN, Yongsu LEE
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Publication number: 20210296407Abstract: An organic light emitting diode display device includes a substrate, a buffer layer, a first circuit structure, a sub-pixel structure, and a first signal wire. The substrate includes a display region including a plurality of sub-pixel regions and a peripheral region surrounding the display region. The buffer layer is disposed in the display region and peripheral region on the substrate. The first circuit structure is disposed in the peripheral region on the buffer layer. The sub-pixel structure is disposed in each of the sub-pixel regions on the first circuit structure. The first signal wire is disposed in the peripheral region between the substrate and the buffer layer, and overlaps the first circuit structure when viewed from a plan view in a thickness direction of the substrate.Type: ApplicationFiled: June 3, 2021Publication date: September 23, 2021Inventors: Heena KIM, Myounggeun CHA, Sang Jin PARK, Young Seok BAEK
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Patent number: 11063093Abstract: An organic light emitting diode display device includes a substrate, a buffer layer, a first circuit structure, a sub-pixel structure, and a first signal wire. The substrate includes a display region including a plurality of sub-pixel regions and a peripheral region surrounding the display region. The buffer layer is disposed in the display region and peripheral region on the substrate. The first circuit structure is disposed in the peripheral region on the buffer layer. The sub-pixel structure is disposed in each of the sub-pixel regions on the first circuit structure. The first signal wire is disposed in the peripheral region between the substrate and the buffer layer, and overlaps the first circuit structure when viewed from a plan view in a thickness direction of the substrate.Type: GrantFiled: December 10, 2019Date of Patent: July 13, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Heena Kim, Myounggeun Cha, Sang Jin Park, Young Seok Baek
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Patent number: 11024696Abstract: A display apparatus has a display area and a non-display area around the display area, the display apparatus includes, in the non-display area, a first power line, a driving circuit on a layer over the first power line, and a second power line electrically connected to the first power line and on a same layer on which one electrode of the driving circuit is arranged.Type: GrantFiled: July 12, 2019Date of Patent: June 1, 2021Assignee: Samsung Display Co., Ltd.Inventors: Myounggeun Cha, Yongsu Lee, Sanggun Choi, Jiyeong Shin