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公开(公告)号：US20210280652A1
公开(公告)日：2021-09-09
申请号：US17062299
申请日：2020-10-02
发明人： Keun Woo Kim , Tae Wook Kang , Han Bit Kim , Bum Mo Sung , Do Kyeong Lee , Jae Seob Lee
IPC分类号： H01L27/32
摘要： A light emitting display device includes: a light emitting element; a second transistor connected to a scan line; a first transistor which applies a current to the light emitting element; a capacitor connected to a gate electrode of the first transistor; and a third transistor connected to an output electrode of the first transistor and the gate electrode of the first transistor. Channels of the second transistor, the first transistor, and the third transistor are disposed in a polycrystalline semiconductor layer, and a width of a channel of the third transistor is in a range of about 1 μm to about 2 μm, and a length of the channel of the third transistor is in a range of about 1 μm to about 2.5 μm.
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公开(公告)号：US11881487B2
公开(公告)日：2024-01-23
申请号：US17386854
申请日：2021-07-28
发明人： Han Bit Kim , Mee Jae Kang , Keun Woo Kim , Doo-Na Kim , Sang Sub Kim , Do Kyeong Lee , Jae Hwan Chu
IPC分类号： H01L27/12 , H01L27/15 , H10K59/121
CPC分类号： H01L27/1222 , H01L27/124 , H01L27/156 , H10K59/1213
摘要： A display device includes a substrate, a semiconductor layer disposed on the substrate, and including a first channel portion, a second channel portion, a connecting portion disposed between the first channel portion and the second channel portion, and electrode regions, a first insulating layer disposed on the semiconductor layer, a gate conductor disposed on the first insulating layer and including a first gate electrode overlapping the first channel portion and a second gate electrode overlapping the second channel portion, signal lines disposed on the substrate, a first electrode electrically connected to at least one of electrode regions of the semiconductor layer, an emission layer disposed on the first electrode, and a second electrode disposed on the emission layer, and the first channel portion and the second channel portion of the semiconductor layer each have a first width greater than a second width of the connecting portion.
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公开(公告)号：US11871617B2
公开(公告)日：2024-01-09
申请号：US18078072
申请日：2022-12-08
发明人： Keun Woo Kim , Tae Wook Kang , Han Bit Kim , Bum Mo Sung , Do Kyeong Lee , Jae Seob Lee
IPC分类号： H01L27/32 , H10K59/121 , H01L29/66 , H01L27/12 , H01L29/423 , H01L29/786 , H01L21/02 , H10K59/12
CPC分类号： H10K59/1213 , H10K59/1216 , H01L21/02532 , H01L21/02592 , H01L21/02661 , H01L21/02675 , H01L27/1222 , H01L27/1255 , H01L27/1274 , H01L29/42384 , H01L29/6675 , H01L29/78645 , H01L29/78672 , H01L29/78696 , H01L2029/42388 , H10K59/1201
摘要： A light emitting display device includes: a light emitting element; a second transistor connected to a scan line; a first transistor which applies a current to the light emitting element; a capacitor connected to a gate electrode of the first transistor; and a third transistor connected to an output electrode of the first transistor and the gate electrode of the first transistor. Channels of the second transistor, the first transistor, and the third transistor are disposed in a polycrystalline semiconductor layer, and a width of a channel of the third transistor is in a range of about 1 μm to about 2 μm, and a length of the channel of the third transistor is in a range of about 1 μm to about 2.5 μm.
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公开(公告)号：US11727882B2
公开(公告)日：2023-08-15
申请号：US17489399
申请日：2021-09-29
发明人： Hanbit Kim , Meejae Kang , Keunwoo Kim , Doo-Na Kim , Sangsub Kim , Do Kyeong Lee , Jaehwan Chu
IPC分类号： G09G3/3258 , G09G3/3266
CPC分类号： G09G3/3258 , G09G3/3266 , G09G2300/0426
摘要： A pixel includes: a capacitor connected between a first voltage line and a first node; a light emitting diode including a first electrode connected to a second node, and a second electrode connected to a second voltage line; a first transistor; a second transistor; a third transistor including a first electrode connected to the first node, a second electrode connected to the second node, and a gate electrode to receive a first scan signal; a fourth transistor including a first electrode connected to the first node, a second electrode connected to a third voltage line to receive a third voltage, and a gate electrode to receive a second scan signal; and a compensation transistor including a first electrode connected to the first node, a second electrode connected to a fourth voltage line to receive a compensation voltage, and a gate electrode to receive a compensation control voltage.
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公开(公告)号：US11705057B2
公开(公告)日：2023-07-18
申请号：US17536560
申请日：2021-11-29
发明人： Keunwoo Kim , Meejae Kang , Hanbit Kim , Do Kyeong Lee , Jaehwan Chu
IPC分类号： G09G3/32 , H10K59/121 , H01L27/12 , H01L29/786
CPC分类号： G09G3/32 , H10K59/1213 , H10K59/1216 , G09G2300/0426 , G09G2300/0819 , G09G2300/0842 , G09G2300/0861 , G09G2310/0267 , G09G2310/0275 , G09G2320/0257 , G09G2330/021 , H01L27/1225 , H01L27/1251 , H01L27/1255 , H01L29/7869 , H01L29/78648 , H01L29/78675
摘要： A pixel includes a light emitting element, a driving switching element and a first compensation switching element and a second compensation switching element. The driving switching element is which applies a driving current to the light emitting element. The first compensation switching element and the second compensation switching element are connected between a control electrode of the driving switching element and an output electrode of the driving switching element. The first compensation switching element and the second compensation switching element are connected to each other in series. The driving switching element is a P-type transistor. The first compensation switching element is an N-type transistor. The second compensation switching element is a P-type transistor.
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公开(公告)号：US11552149B2
公开(公告)日：2023-01-10
申请号：US17062299
申请日：2020-10-02
发明人： Keun Woo Kim , Tae Wook Kang , Han Bit Kim , Bum Mo Sung , Do Kyeong Lee , Jae Seob Lee
IPC分类号： H01L27/32 , H01L29/66 , H01L27/12 , H01L29/423 , H01L29/786 , H01L21/02
摘要： A light emitting display device includes: a light emitting element; a second transistor connected to a scan line; a first transistor which applies a current to the light emitting element; a capacitor connected to a gate electrode of the first transistor; and a third transistor connected to an output electrode of the first transistor and the gate electrode of the first transistor. Channels of the second transistor, the first transistor, and the third transistor are disposed in a polycrystalline semiconductor layer, and a width of a channel of the third transistor is in a range of about 1 μm to about 2 μm, and a length of the channel of the third transistor is in a range of about 1 μm to about 2.5 μm.
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公开(公告)号：US11450722B2
公开(公告)日：2022-09-20
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： H01L27/14 , H01L27/32 , H01L29/786 , H01L27/12 , H01L29/423 , H01L29/49 , H01L29/51
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：US11195444B2
公开(公告)日：2021-12-07
申请号：US17038256
申请日：2020-09-30
发明人： Keun Woo Kim , Tae Wook Kang , Hye Na Kwak , Doo Na Kim , Han Bit Kim , Bum Mo Sung , Do Kyeong Lee , Yong Su Lee , Jae Hwan Chu
IPC分类号： G09G3/20
摘要： A display device includes: a pixel unit including a plurality of pixels; a scan driver having a plurality of stages and configured to supply a scan signal to the pixel unit; and a light emission control driver having a plurality of stages and configured to supply a light emission control signal to the pixel unit, wherein a first transistor of a plurality of transistors included in at least one of the stages of the scan driver or the stages of the light emission control driver comprises: an active layer pattern on a base layer, and including a channel region forming a channel, and first and second regions on opposite sides of the channel region; and a gate electrode spaced apart from the active layer pattern with a first insulating film therebetween, and overlapping the channel region.
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