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公开(公告)号：US11727885B2
公开(公告)日：2023-08-15
申请号：US17847732
申请日：2022-06-23
Applicant: Samsung Display Co., Ltd.
Inventor： Jonghee Kim , Bogyeong Kim , Takyoung Lee , Boyong Chung , Byungseok Choi
IPC: G09G3/3266 , G09G3/3233
CPC classification number: G09G3/3266 , G09G3/3233 , G09G2300/0819 , G09G2300/0842 , G09G2310/08
Abstract: A scan driver includes a plurality of stages, each of the plurality of stages including: a first controller to control voltage levels of a first control node and a second control node in response to a first start signal and a second start signal, and to output a first carry signal; a second controller to control voltage levels of a third control node and a fourth control node in response to the first start signal and the second start signal, and to output a second carry signal; and an output circuit including: a pull-up transistor having a gate connected to the first control node; and a pull-down transistor having a gate connected to the third control node. The output circuit is to output a scan signal based on an on voltage output through the pull-up transistor and an off voltage output through the pull-down transistor.
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公开(公告)号：US10607519B2
公开(公告)日：2020-03-31
申请号：US14980581
申请日：2015-12-28
Applicant: Samsung Display Co., Ltd
Inventor： Jaekeun Lim , Chongchul Chai , Jonghee Kim
Abstract: Provided is a display device. The display device includes a display panel, a gate driving circuit, a sensor part, and a control voltage generator. The gate driving circuit includes driving transistors including a first control electrode and a second control electrode. The sensor part is configured to measure an environmental factor that changes a threshold voltage of the driving transistors. The control voltage generator is configured to apply to the second control electrode a control voltage for controlling the threshold voltage of the driving transistors on the basis of the environmental factor measured by the sensor part.
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公开(公告)号：US10360865B2
公开(公告)日：2019-07-23
申请号：US15463012
申请日：2017-03-20
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jonghee Kim , Kyoungseok Son , Kyoungju Shin
IPC: G09G3/36
Abstract: A gate driving circuit includes a plurality of stages to provide gate signals to gate lines of a display panel. At least one of the stages includes an input circuit receiving a carry signal from a previous stage. A first output circuit outputs a first clock signal as a gate signal. The second output circuit outputs the clock signal as a carry signal. The discharge hold circuit delivers the clock signal to a node based on the clock signal and discharges the node as a second voltage based on the carry signal. The pull down circuit discharges the gate signal as a first voltage based on a signal of the node and a succeeding carry signal from a succeeding stage and discharges another node and the carry signal as the second voltage. The switching circuit delivers the carry signal from the previous stage based on a second clock signal.
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公开(公告)号：US12033583B2
公开(公告)日：2024-07-09
申请号：US18077405
申请日：2022-12-08
Applicant: Samsung Display Co., Ltd.
Inventor： Jonghee Kim , Bogyeong Kim , Tak-Young Lee , Boyong Chung , Byungseok Choi
IPC: G09G3/3266 , G09G3/3233 , G09G3/3275
CPC classification number: G09G3/3266 , G09G3/3233 , G09G3/3275 , G09G2300/0426 , G09G2300/0819 , G09G2300/0842 , G09G2310/08 , G09G2320/0295
Abstract: A gate driver includes stages. Each stage includes: a first output part for outputting a carry signal in response to a voltage of a first node; a first input part for controlling the voltage of the first node in response to a previous carry signal; a second input part for controlling the voltage of the first node in response to a first next carry signal; a second output part for outputting a scan signal in response to the voltage of the first node; a third output part for outputting a sensing signal in response to the voltage of the first node; and a scan signal control part for applying a first low power voltage to an output terminal of the second output part to which the scan signal is output in response to a second next carry signal of which a pulse is generated before the first next carry signal.
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公开(公告)号：US11862106B2
公开(公告)日：2024-01-02
申请号：US17980425
申请日：2022-11-03
Applicant: Samsung Display Co., Ltd.
Inventor： Jonghee Kim , Bogyeong Kim , Dooyoung Lee , Takyoung Lee , Sanguk Lim , BoYong Chung
IPC: G09G3/3266 , G09G3/3233
CPC classification number: G09G3/3266 , G09G3/3233 , G09G2300/0842 , G09G2310/0286 , G09G2310/08 , G09G2320/0233 , G09G2320/041 , G09G2320/045
Abstract: A scan driver includes stages, and first to third clock signals are applied to the stages, respectively. A falling time of the first clock signal is shorter than falling times of the second and third clock signals.
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Patent Agency Ranking
公开(公告)号：US10720117B2
公开(公告)日：2020-07-21
申请号：US15091072
申请日：2016-04-05
Applicant: Samsung Display Co., Ltd.
Inventor： Jonghee Kim , Jisun Kim , Youngwan Seo , Jaekeun Lim , Chongchul Chai
IPC: G09G3/36 , G11C19/28 , G02F1/1345 , G09G3/3266
Abstract: A display device including: a display panel including a gate line and a data line; and a shift register including a stage for driving the gate line. The stage may include a first driving unit in a display area of the display panel and a second driving unit in a non-display area of the display panel.
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公开(公告)号：US09830845B2
公开(公告)日：2017-11-28
申请号：US14958764
申请日：2015-12-03
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jaekeun Lim , Ji-sun Kim , Jonghee Kim , Chongchul Chai
CPC classification number: G09G3/20 , G09G2310/0267 , G09G2310/0286 , G09G2310/08
Abstract: A gate driving circuit includes a plurality of driving stages applying gate signals to gate lines of a display panel. Among the plurality of driving stages, a k-th (k being a natural number equal to or greater than 2) includes a first node, an output part that is connected to the first node and outputs a k-th gate signal in response to a voltage of the first node, a control part that controls an electric potential of the first node, an inverter part that outputs a k-th switching signal, and a pull-down part that receives a (k−1)th switching signal from a (k−1)th driving stage of the plurality of driving stages and lowers a voltage of the output part in response to the (k−1)th switching signal.
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公开(公告)号：US09704429B2
公开(公告)日：2017-07-11
申请号：US14857747
申请日：2015-09-17
Applicant: Samsung Display Co., Ltd.
Inventor： Youngwan Seo , Ji-sun Kim , Jaekeun Lim , Jonghee Kim , Chongchul Chai
CPC classification number: G09G3/2085 , G09G2300/0408 , G09G2300/0426 , G09G2300/08 , G09G2310/0267
Abstract: A display device includes: a display panel having a display area and a non-display area; a plurality of pixels on the display area to emit light, wherein pixels arranged along a first direction are defined as first pixel groups and pixels arranged along a second direction are defined as second pixel groups; gate driving units on the display area to generate gate signals, wherein the gate driving units include first and second gate driving units corresponding one-to-one with each other; a data driver on the non-display area to generate data signals; a plurality of first lines to transmit the data signals to the plurality of pixels; and a plurality of second lines to transmit driving start signals from the first gate driving units to the second gate driving units respectively corresponding to the first gate driving units, wherein the first or second lines are between the first groups.
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公开(公告)号：US11908423B2
公开(公告)日：2024-02-20
申请号：US17864764
申请日：2022-07-14
Applicant: Samsung Display Co., Ltd.
Inventor： Boyong Chung , Jonghee Kim , Hyuk Kim , Joosun Yoon , Tak-Young Lee
IPC: G09G3/3291 , G09G3/3266 , G09G3/3275 , G09G3/3258
CPC classification number: G09G3/3291 , G09G3/3266 , G09G3/3275 , G09G3/3258 , G09G2310/0272 , G09G2330/025 , G09G2330/026 , G09G2330/027 , G09G2330/028
Abstract: A display device includes a display panel including a plurality of pixels, a gate driver which provides a gate signal to corresponding pixels of the plurality of pixels, a data driver which provides a data voltage to the corresponding pixels of the plurality of pixels, a power voltage generator which provides a pixel power voltage to each of the plurality of pixels, and provides a gate power voltage to the gate driver, and a controller which provides a gate control signal to the gate driver. The pixel power voltage, the data voltage, and the gate control signal sequentially have a ground voltage level in response to a power-off signal.
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公开(公告)号：US20230186858A1
公开(公告)日：2023-06-15
申请号：US17847732
申请日：2022-06-23
Applicant: Samsung Display Co., Ltd.
Inventor： Jonghee Kim , Bogyeong Kim , Takyoung Lee , Boyong Chung , Byungseok Choi
IPC: G09G3/3266 , G09G3/3233
CPC classification number: G09G3/3266 , G09G3/3233 , G09G2300/0842 , G09G2300/0819 , G09G2310/08
Abstract: A scan driver includes a plurality of stages, each of the plurality of stages including: a first controller to control voltage levels of a first control node and a second control node in response to a first start signal and a second start signal, and to output a first carry signal; a second controller to control voltage levels of a third control node and a fourth control node in response to the first start signal and the second start signal, and to output a second carry signal; and an output circuit including: a pull-up transistor having a gate connected to the first control node; and a pull-down transistor having a gate connected to the third control node. The output circuit is to output a scan signal based on an on voltage output through the pull-up transistor and an off voltage output through the pull-down transistor.
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