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公开(公告)号：US20210074785A1
公开(公告)日：2021-03-11
申请号：US16871523
申请日：2020-05-11
发明人： Doo Na KIM , Keun Woo KIM , Tae Wook KANG , Do Kyeong LEE , Yong Su LEE , Jae Hwan CHU , Kwang Hyun KIM , Yeoung Keol WOO , Yung Bin CHUNG
IPC分类号： H01L27/32
摘要： A display device includes: a first semiconductor layer on a first buffer layer, and including a first active layer; a first gate insulating layer on the first semiconductor layer, and covering the first active layer; a first conductive layer on the first gate insulating layer, and including a first gate electrode; a second conductive layer on the first conductive layer, and including a first source/drain electrode; a first interlayer insulating layer on the first conductive layer; a second semiconductor layer on the first interlayer insulating layer, and including a second active layer; a second gate insulating layer on the second semiconductor layer, and covering the second active layer; and a third conductive layer on the second gate insulating layer, and including a second gate electrode and a second source/drain electrode. The first gate insulating layer and the second gate insulating layer include different insulating materials from each other.
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公开(公告)号：US20210036079A1
公开(公告)日：2021-02-04
申请号：US16838931
申请日：2020-04-02
发明人： Keun Woo KIM , Yong Su LEE , Myoung Geun CHA , Doo Na KIM , Sang Sub KIM , Jae Hwan CHU , Sang Gun CHOI
IPC分类号： H01L27/32
摘要： A display device includes: a pixel at a display region. The pixel includes: a light-emitting element connected between a first power source and a second power source; and a first transistor connected between the first power source and the light-emitting element, the first transistor to control a driving current of the light-emitting element in response to a voltage of a first node. The first transistor includes a first driving transistor and a second driving transistor that are connected in series with each other between the first power source and the light-emitting element, and the first driving transistor and the second driving transistor have structures that are asymmetric with each other in a cross-sectional view.
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公开(公告)号：US20210036080A1
公开(公告)日：2021-02-04
申请号：US16856780
申请日：2020-04-23
发明人： Keun Woo KIM , Hye Na KWAK , Doo Na KIM , Sang Sub KIM , Thanh Tien NGUYEN , Yong Su LEE , Jae Hwan CHU
IPC分类号： H01L27/32 , G09G3/3233
摘要： A display device includes a pixel disposed in a display region. The pixel includes a light-emitting element connected between a first power source and a second power source; a first transistor connected between the first power source and the light-emitting element to control a driving current flowing in the light-emitting element in response to a voltage of a first node; and at least one switching transistor to transmit a data signal or a voltage of an initialization power source to the first node. The switching transistor includes a first channel region, a first conductive region and a second conductive region which are respectively disposed at opposite sides of the first channel region, and a first wide band-gap region disposed between the first channel region and the second conductive region.
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公开(公告)号：US20180240910A1
公开(公告)日：2018-08-23
申请号：US15901137
申请日：2018-02-21
发明人： Yoon Ho KHANG , Doo Na KIM , Myoung Geun CHA
IPC分类号： H01L29/786 , H01L21/3115 , H01L29/66
CPC分类号： H01L29/78603 , H01L21/26513 , H01L21/266 , H01L21/31155 , H01L27/1218 , H01L27/1225 , H01L27/1259 , H01L27/3262 , H01L29/66757 , H01L29/66969 , H01L29/78666 , H01L29/78675
摘要： A transistor includes a buffer layer, an active pattern, and a first insulating layer. The buffer layer is doped with an impurity. The active pattern is on the buffer layer and includes a channel area between a source area and a drain area. The first insulating layer is on the active pattern. A gate electrode is on the first insulating layer and overlaps the channel area. A source electrode is insulated from the gate electrode and is electrically coupled with the source area. A drain electrode is insulated from the gate electrode and is electrically coupled with the drain area.
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公开(公告)号：US20240332321A1
公开(公告)日：2024-10-03
申请号：US18607426
申请日：2024-03-16
发明人： Keun Woo KIM , Hye Na KWAK , Doo Na KIM , Sang Sub KIM , Bum Mo SUNG
IPC分类号： H01L27/12 , G09G3/3233 , H10K59/121
CPC分类号： H01L27/127 , G09G3/3233 , H10K59/1213 , G09G2300/0819 , G09G2300/0852
摘要： A display device includes a light emitting element disposed on a substrate, a first transistor which controls a driving current flowing in the light emitting element, a second transistor which supplies a data voltage to a gate electrode of the first transistor, a first-third transistor and a second-third transistor connected in series between the gate and drain electrodes of the first transistor, a first charge injection layer adjacent to a drain electrode of the first-third transistor electrically connected to the gate electrode of the first transistor on a semiconductor region of the first-third transistor, and a second charge injection layer adjacent to a source electrode of the second-third transistor integrally formed with the drain electrode of the first transistor on a semiconductor region of the second-third transistor. A charge injection area of the first charge injection layer is greater than a charge injection area of the second charge injection layer.
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公开(公告)号：US20210057502A1
公开(公告)日：2021-02-25
申请号：US16857888
申请日：2020-04-24
发明人： Keun Woo KIM , Sang Sub KIM , Hye Na KWAK , Doo Na KIM , Thanh Tien NGUYEN , Yong Su LEE , Jae Hwan CHU
IPC分类号： H01L27/32 , G09G3/3233 , G09G3/3291 , G09G3/3266
摘要： A display device includes pixels at least one of which includes a light emitting element connected between a first power source and a second power source, a first transistor connected between the first power source and the light emitting element and controlling a driving current flowing through the light emitting element in response to a voltage of a first node, a switching transistor connected to the first node and including and active layer that includes first and second conductive regions spaced apart from each other, first and second channel regions disposed between the first and second conductive regions, and a common conductive region disposed between the first and second channel regions, and a conductive pattern overlapping the active layer to face the common conductive region.
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公开(公告)号：US20240121984A1
公开(公告)日：2024-04-11
申请号：US18455832
申请日：2023-08-25
发明人： Han Bit KIM , Keun Woo KIM , Doo Na KIM , Sang Sub KIM , Chan Yeob SEOL , Jae Hwan CHU , Sang Gun CHOI
IPC分类号： H10K59/121 , H10K59/131
CPC分类号： H10K59/1213 , H10K59/131
摘要： A display device including a pixel electrode, and a pixel circuit electrically connected to the pixel electrode. The pixel circuit includes a first transistor including sub-transistors electrically connected to each other through a first common node, a second transistor including sub-transistors electrically connected to each other through a second common node, a first electrode electrically connecting the first common node with the second common node, and a second electrode disposed to overlap the first electrode and electrically connected to a direct current power source.
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公开(公告)号：US20210210014A1
公开(公告)日：2021-07-08
申请号：US17092832
申请日：2020-11-09
发明人： Keun Woo KIM , Hye Na KWAK , Doo Na KIM , Han Bit KIM , Yong Su LEE
IPC分类号： G09G3/3233 , G09G3/20
摘要： A display device includes a driving circuit that drives a pixel, and a display region including the pixel. The pixel includes a light emitting element electrically connected between a first power source and a second power source, a first transistor electrically connected between the first power source and the light emitting element to control a driving current, the first transistor including a first gate electrode electrically connected to a first node, and a second gate electrode electrically connected to a bias control line, and a switching transistor electrically connected between a data line and the first node, the switching transistor including a gate electrode electrically connected to a scan line. The driving circuit varies a control signal provided to the bias control line in a second period based on a first data signal provided to the data line during a first period.
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公开(公告)号：US20210057458A1
公开(公告)日：2021-02-25
申请号：US16849882
申请日：2020-04-15
发明人： Keun Woo KIM , Mee Jae KANG , Doo Na KIM , Yun Jung OH , Yong Su LEE , Jae Hwan CHU
摘要： A display device includes: a plurality of pixels connected to gate lines and data lines; a gate driver to supply a gate signal to the gate lines; and a data driver to supply a data signal to the data lines. The gate driver includes: a first transistor including a first active layer at a first layer; and a second transistor including a second active layer at a second layer on the first layer.
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公开(公告)号：US20240355828A1
公开(公告)日：2024-10-24
申请号：US18601840
申请日：2024-03-11
发明人： Keun Woo KIM , Doo Na KIM , Sang Sub KIM , Bum Mo SUNG
IPC分类号： H01L27/12 , H10K59/121 , H10K59/131
CPC分类号： H01L27/1225 , H10K59/1213 , H10K59/131
摘要： The disclosure relates to a display device, and more particularly, to a display device capable of reducing a dead space area while improving current driving capability of pull-up and pull-down transistors. According to an embodiment of the disclosure, a substrate having a display area and a non-display area; pixels arranged in the display area of the substrate; and a gate driving circuit disposed in the non-display area of the substrate and connected to a transistor of the pixel. The gate driving circuit includes a pull-up transistor and a pull-down transistor. At least one of the pull-up and pull-down transistors includes a plurality of sub-transistors including a plurality of gate electrodes, and wherein the sub-transistors shares at least one of the gate electrodes.
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