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公开(公告)号：US11295697B2
公开(公告)日：2022-04-05
申请号：US17092650
申请日：2020-11-09
Applicant: Samsung Display Co., Ltd.
Inventor： Jahun Koo , Haksun Kim , Kyung-hun Lee
Abstract: A display device includes a display panel which includes pixels arranged in a matrix form and a controller which receives a first image signal corresponding to a first active period of a first frame, outputs a first final output signal corresponding to a first conversion active period of the first frame, and drives the display panel based on the first final image signal. The controller includes a timing changing unit which receives the first image signal and changes a first image signal pixel size corresponding to the first image signal to a panel pixel size corresponding to the display panel to generate the first output signal, and a frequency changing unit which receives the first output signal from the timing changing unit and reduces a frame frequency of the first output signal based on the first image signal to output the first final output signal.
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公开(公告)号：US10586504B2
公开(公告)日：2020-03-10
申请号：US15448937
申请日：2017-03-03
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Seung-Woon Shin , Jahun Koo , Young-Il Kim , Sung-Jae Park , Sehwan An
IPC: G09G3/36
Abstract: A display apparatus includes a display panel, a data driving circuit, and a gate driving circuit. The display panel is configured to display an image and includes a gate line and a data line. The data driving circuit is configured to output a data signal to the data line. The gate driving circuit is configured to output a gate signal to the gate line and to control a kick-back time of the gate signal according to a temperature of the display panel. The kick-back time is a time when the gate signal is decreased from a gate on voltage to a kick-back voltage that is between the gate on voltage and a gate off voltage.
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公开(公告)号：US11430402B2
公开(公告)日：2022-08-30
申请号：US16511184
申请日：2019-07-15
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jahun Koo , Haksun Kim , Kyung-Hun Lee
Abstract: A display apparatus includes a display panel comprising a pixel which is connected to a gate line and a data line, a gate driver configured to generate a gate signal having a gate-on voltage and a gate-off voltage and to provide the gate line with the gate signal, and a gate controller configured to generate a clock signal having a duty ratio and to provide the gate driver with the clock signal, where a mean amplitude of the clock signal in a vertical blanking period of a frame cycle is smaller than the mean amplitude of the clock signal in an active period of the frame cycle.
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公开(公告)号：US10930236B2
公开(公告)日：2021-02-23
申请号：US16406427
申请日：2019-05-08
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Kyung-Hun Lee , Jahun Koo , Ho Lee
Abstract: Stages of a gate driver may each receive a clock signal, an inverted clock signal, a previous carry signal and a subsequent carry signal, and may each include an output part, a node controlling part and a holding part. In a mode transition period, clock signal and the inverted clock signal may both be temporarily applied with on voltages. The holding parts of the stages receive the clock signal and the inverted clock signal each having the on voltage, and in response, discharge the control nodes, the gate output nodes and the carry output nodes, thereby preventing faulty operation.
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公开(公告)号：US11651711B2
公开(公告)日：2023-05-16
申请号：US17239910
申请日：2021-04-26
Applicant: Samsung Display Co., Ltd.
Inventor： Jeongweon Seo , Jahun Koo , Jihyun Kim , Jinsoo Shin , Kiseok Cha , Joonhoo Choi
CPC classification number: G09F9/301 , H05K1/028 , H05K1/189 , H05K2201/10128
Abstract: A display device includes a display substrate comprising a polymer layer including a first non-bending area, a second non-bending area that overlaps the first non-bending area when viewed in a plan view, and a bending area arranged between the first non-bending area and the second non-bending area. A display element layer is disposed on the polymer layer. A plurality of signal pad groups is disposed in the second non-bending area and is configured to be electrically connected to the display element layer. An upper substrate is disposed on a top surface of the display substrate. A flexible circuit board comprising a plurality of connection pad groups is arranged in correspondence to the signal pad groups. An area of the upper substrate is larger than an area of the display substrate when viewed in a plan view.
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Patent Agency Ranking
公开(公告)号：US11257450B2
公开(公告)日：2022-02-22
申请号：US15906058
申请日：2018-02-27
Applicant: Samsung Display Co., LTD.
Inventor： Jahun Koo , Kyung-Hun Lee
IPC: G09G3/36
Abstract: A display apparatus includes a display panel, a gate driver and a data driver. The display panel is configured to display an image. The gate driver is configured to output a gate signal to the display panel. The data driver is configured to output a data voltage to the display panel. The display panel includes a first subpixel row including first subpixels having a first color and a second subpixel row including second subpixels having a second color. A first gate off voltage of a first gate signal applied to the first subpixel row to turn off switching elements of the first subpixel row is different from a second gate off voltage of a second gate signal applied to the second subpixel row to turn off switching elements of the second subpixel row.
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公开(公告)号：US10332479B2
公开(公告)日：2019-06-25
申请号：US15818008
申请日：2017-11-20
Applicant: Samsung Display Co., Ltd.
Inventor： Jahun Koo , Haksun Kim , Kyung-hun Lee
Abstract: A display device includes a display panel which includes pixels arranged in a matrix form and a controller which receives a first image signal corresponding to a first active period of a first frame, outputs a first final output signal corresponding to a first conversion active period of the first frame, and drives the display panel based on the first final image signal. The controller includes a timing changing unit which receives the first image signal and changes a first image signal pixel size corresponding to the first image signal to a panel pixel size corresponding to the display panel to generate the first output signal, and a frequency changing unit which receives the first output signal from the timing changing unit and reduces a frame frequency of the first output signal based on the first image signal to output the first final output signal.
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公开(公告)号：US12236873B2
公开(公告)日：2025-02-25
申请号：US18238463
申请日：2023-08-26
Applicant: Samsung Display Co., LTD.
Inventor： Kang-Min Kim , Dongin Kim , Byoungchel Kim , Jahun Koo , Yeong Won Kim , Bongim Park , Gyusu Lee , Hye Ryeon Jo
IPC: G09G3/3233 , G09G3/32 , G09G3/3275
Abstract: A display device includes a display panel which includes a pixel including a driving transistor and a light-emitting element, and a sensing line connected to the pixel. A sensing driver senses a first sensing signal corresponding to mobility of the driving transistor through the sensing line, and processes the first sensing signal to output first sensing data. A driving controller receives the first sensing data from the sensing driver, generates mobility compensation data and kickback compensation data based on the first sensing data, and converts image data into compensation image data by the mobility compensation data and the kickback compensation data. A data driver converts the compensation image data into a data signal and provides the data signal to the pixel.
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公开(公告)号：US11763771B2
公开(公告)日：2023-09-19
申请号：US17151313
申请日：2021-01-18
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jahun Koo , Kyung-Hun Lee , Ho Lee
CPC classification number: G09G3/3696 , G02F1/13306 , G09G3/3655 , G09G5/12 , G09G2320/0247 , G09G2320/0257 , G09G2340/0435
Abstract: A liquid crystal display device includes a source device that outputs image data and a sink device that performs a displaying operation based on the image data. The source device changes a frame rate of an image frame composing the image data while the displaying operation is performed. The sink device changes a frame rate of a panel driving frame for the displaying operation by adjusting a vertical blank period of the panel driving frame as the frame rate of the image frame is changed. Here, the sink device adjusts a common voltage applied to a display panel included in the sink device during a display operation of an individual frame, in accordance with the frame rate of the panel driving frame.
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10.发明授权公开(公告)号：US10923044B2
公开(公告)日：2021-02-16
申请号：US16657408
申请日：2019-10-18
Applicant: Samsung Display Co., Ltd.
Inventor： Jahun Koo , Su-Han Woo , Kyung-Hun Lee
Abstract: A method of adjusting luminance of a backlight unit included in a liquid crystal display device that performs inversion driving is provided. The method derives a positive polarity histogram and a negative polarity histogram of an image frame based on image frame data, corresponding to the image frame, and a data polarity pattern for implementing the image frame, derives a luminance compensation value according to data polarity dominance of the image frame by analyzing the positive polarity histogram and the negative polarity histogram, and applies the luminance compensation value to the luminance of the backlight unit during a portion of a time period of the image frame.
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