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公开(公告)号：US11450133B2
公开(公告)日：2022-09-20
申请号：US16824475
申请日：2020-03-19
Applicant: Samsung Display Co., Ltd.
Inventor： Keun Woo Kim , Doo Na Kim , Ji Yeong Shin , Yong Su Lee , Jae Hwan Chu , Ki Seok Choi
Abstract: An ultrasonic sensing device includes: a sensing layer between a driving electrode and a sensing electrode, a double-gated first transistor connected to a selection line and the sensing electrode, and may further include a sensed voltage storing capacitor having an electrode on the same layers as the first transistor. The configuration as a double gated transistor of a pixel sensor and the placement of one of the capacitor electrodes on the same layer can each reduce the size of the pixel sensor. The ultrasonic sensing device may be utilized as a proximity sensor or a fingerprint recognition sensor.
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公开(公告)号：US12217694B2
公开(公告)日：2025-02-04
申请号：US16849882
申请日：2020-04-15
Applicant: Samsung Display Co., Ltd.
Inventor： Keun Woo Kim , Mee Jae Kang , Doo Na Kim , Yun Jung Oh , Yong Su Lee , Jae Hwan Chu
IPC: G09G3/3266 , G09G3/20 , H01L27/12
Abstract: 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：US11881487B2
公开(公告)日：2024-01-23
申请号：US17386854
申请日：2021-07-28
Applicant: Samsung Display Co., LTD.
Inventor： Han Bit Kim , Mee Jae Kang , Keun Woo Kim , Doo-Na Kim , Sang Sub Kim , Do Kyeong Lee , Jae Hwan Chu
IPC: H01L27/12 , H01L27/15 , H10K59/121
CPC classification number: H01L27/1222 , H01L27/124 , H01L27/156 , H10K59/1213
Abstract: 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：US11437455B2
公开(公告)日：2022-09-06
申请号：US16856780
申请日：2020-04-23
Applicant: Samsung Display Co., LTD.
Inventor： Keun Woo Kim , Hye Na Kwak , Doo Na Kim , Sang Sub Kim , Thanh Tien Nguyen , Yong Su Lee , Jae Hwan Chu
IPC: G09G3/3233 , H01L27/32 , H01L27/12 , H01L29/786 , H01L29/66
Abstract: 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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Patent Agency Ranking
公开(公告)号：US12256571B2
公开(公告)日：2025-03-18
申请号：US18405283
申请日：2024-01-05
Applicant: Samsung Display Co., LTD.
Inventor： Han Bit Kim , Mee Jae Kang , Keun Woo Kim , Doo-Na Kim , Sang Sub Kim , Do Kyeong Lee , Jae Hwan Chu
Abstract: 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：US11615744B2
公开(公告)日：2023-03-28
申请号：US17141808
申请日：2021-01-05
Applicant: Samsung Display Co., Ltd.
Inventor： Keun Woo Kim , Tae Wook Kang , Doo Na Kim , Han Bit Kim , Jae Seob Lee , Jae Hwan Chu
IPC: G09G3/3233 , H01L27/32 , H01L29/786
Abstract: Provided is a display device. The display device comprises a substrate, and a plurality of sub-pixels disposed on the substrate and including alight emitting element and a sub-pixel circuit driving the light emitting element. The sub-pixel circuit comprises a driving transistor controlling a driving current flowing through the light emitting element, a first transistor and a second transistor connected in series between a first node, which is a drain electrode of the driving transistor, and a second node, which is a gate electrode of the driving transistor, to receive the same scan signal, and a gate auxiliary electrode disposed on a gate electrode of the first transistor or the second transistor. The gate auxiliary electrode is connected to the gate electrode of the first transistor or the second transistor.
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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
Applicant: Samsung Display Co., Ltd.
Inventor： 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: H01L27/14 , H01L27/32 , H01L29/786 , H01L27/12 , H01L29/423 , H01L29/49 , H01L29/51
Abstract: 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：US11309373B2
公开(公告)日：2022-04-19
申请号：US16838931
申请日：2020-04-02
Applicant: Samsung Display Co., Ltd.
Inventor： Keun Woo Kim , Yong Su Lee , Myoung Geun Cha , Doo Na Kim , Sang Sub Kim , Jae Hwan Chu , Sang Gun Choi
Abstract: 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：US11195444B2
公开(公告)日：2021-12-07
申请号：US17038256
申请日：2020-09-30
Applicant: Samsung Display Co., Ltd.
Inventor： 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: G09G3/20
Abstract: 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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