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公开(公告)号：US11430394B2
公开(公告)日：2022-08-30
申请号：US17346655
申请日：2021-06-14
Inventor： Jeonkyoo Kim , Soo Yeon Lee , Manseung Cho , Kyeong Soo Kang , Junhee Moon , Bonghyun You , Jin Kyu Lee
IPC: G09G3/3291 , G09G3/3266 , G09G3/3233
Abstract: A display device includes a sensing circuit and a controller which selects a pixel row in a frame period. A vertical blank period of the frame period includes a sensing time in which the sensing circuit performs a sensing operation for the selected pixel row. The sensing circuit measures a first source voltage of a driving transistor of a pixel in the selected pixel row at a first time point of the sensing time, and measures a second source voltage of the driving transistor at a second time point of the sensing time. The controller calculates a threshold voltage parameter and a mobility parameter based on the first and second source voltages, predicts a saturated source voltage of the driving transistor based on the threshold voltage parameter and the mobility parameter, and calculates a threshold voltage of the driving transistor based on the saturated source voltage.
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公开(公告)号：US11423843B2
公开(公告)日：2022-08-23
申请号：US17342585
申请日：2021-06-09
Applicant: Samsung Display Co., Ltd.
Inventor： Taehoon Kim , Sangan Kwon , Soon-Dong Kim , Hui Nam , Bonghyun You , Changnoh Yoon , Jaekeun Lim
IPC: G09G3/3266 , G09G3/3225
Abstract: Provided is a scan driver of a display device, and the scan driver includes a driving circuit and a masking circuit. The driving circuit includes a control circuit, a first output circuit, and a second output circuit. The control circuit outputs a first control signal and a second control signal. The first output circuit is connected to a first output terminal which outputs a first scan signal and a first voltage terminal and operates in response to a first control signal. The second output circuit is connected to a first output terminal and a second voltage terminal and operates in response to a second control signal. The masking circuit outputs a second scan signal to a second output terminal in response to the first control signal and the second control signal and is connected to an input terminal to which a masking signal is supplied.
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公开(公告)号：US11222595B2
公开(公告)日：2022-01-11
申请号：US16790655
申请日：2020-02-13
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jaehoon Lee , Bonghyun You , Soo-yeon Lee , Seokha Hong
IPC: G09G3/3266 , G09G3/36 , G11C19/28
Abstract: A gate driving circuit includes: a plurality of stages, a k-th stage from among the plurality of stages, the k-th stage including: an input circuit to receive a previous carry signal and to pre-charge a first node; a first output circuit to output a k-th gate signal; a second output circuit to output a k-th carry signal; a discharge hold circuit to transmit a clock signal to a second node, and to discharge the second node with a second low voltage; a first pull down circuit to discharge the k-th gate signal with a first low voltage, and to discharge the first node and the k-th carry signal with the second low voltage; and a discharge circuit for discharging the k-th carry signal with the second low voltage in response to the previous carry signal.
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公开(公告)号：US11195465B2
公开(公告)日：2021-12-07
申请号：US16737363
申请日：2020-01-08
Applicant: Samsung Display Co., Ltd.
Inventor： Hyojin Lee , Sehyuk Park , Jinyoung Roh , Geunjeong Park , Eunho Lee , Hui Nam , Bonghyun You
IPC: G09G3/3258 , G09G3/3266 , G09G3/3275 , H01L27/12
Abstract: A display device including: a display panel including a pixel connected to a first scan line, second scan line, and data line, the pixel including: a first switch connected to the first scan line; a second switch connected to the second scan line; and a light emitting element; a low-frequency driving controller to output a power control signal having a first level in a first mode and a second power control signal having a second level in a second mode; a scan driver including first and second scan drivers to drive the first and second scan lines, wherein one of the first and second scan drivers operates in the second mode; and a data driver to operate in the second mode in response to the power control signal having the second level, wherein the data driver operates at a frequency lower than a reference frequency in the second mode.
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公开(公告)号：US11176870B2
公开(公告)日：2021-11-16
申请号：US16206950
申请日：2018-11-30
Applicant: Samsung Display Co., Ltd.
Inventor： Soo-wan Yoon , Joon-chul Goh , Young-Soo Yoon , Bonghyun You
Abstract: A display apparatus includes: a display panel including a plurality of pixels respectively connected to a plurality of gate lines; a gate driving circuit including a plurality of driving stages configured to apply gate signals to the gate lines; a voltage generator configured to output a gate-on voltage through a voltage output terminal thereof; and a signal controller configured to sense a variation in current of the voltage output terminal to output a back bias control voltage corresponding to the sensed current variation, wherein each of the driving stages comprises a plurality of oxide thin film transistors and at least one of the oxide thin film transistors is a four-terminal transistor in which a threshold voltage thereof is controlled by the back bias control voltage.
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Patent Agency Ranking
公开(公告)号：US11169644B2
公开(公告)日：2021-11-09
申请号：US16933026
申请日：2020-07-20
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jae-Kyoung Kim , Kiseo Kim , Wonsang Park , Bonghyun You
Abstract: An electronic device includes a display panel including a display region and a non-display region adjacent thereto, an input sensor overlapping a first region of the display region, and an antenna overlapping a second region of the display region. The input sensor includes a first sensing layer including a bridge pattern and a second sensing layer including sensor electrodes and disposed on a different layer from the first sensing layer. The bridge pattern connects two adjacent sensor electrodes. The antenna includes a first antenna layer including a first antenna with a first frequency band, the first antenna layer and the first sensing layer disposed on the same layer, and a second antenna layer including a second antenna with a second frequency band different from the first frequency band. The second antenna layer and the second sensing layer are disposed on the same layer.
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公开(公告)号：US11062670B2
公开(公告)日：2021-07-13
申请号：US15215516
申请日：2016-07-20
Applicant: Samsung Display Co., Ltd.
Inventor： Jaehoon Lee , Bonghyun You
IPC: G09G3/36
Abstract: A gate driving circuit includes driving stages for providing gate signals to gate lines of a display panel. A k-th driving stage a k-th driving stage (k being equal to or greater than 2) among the driving stages includes a gate output unit configured to output a clock signal as a k-th gate signal in response to a voltage of a first node, a carry output unit configured to output the clock signal as a k-th carry signal in response to the voltage of the first node, a control unit configured to control a voltage level of the first node in response to a (k−1)th carry signal, a first discharge unit configured to discharge the k-th carry signal to a voltage level in response to the (k−1)th carry signal, and a second discharge unit configured to discharge the k-th carry signal to a voltage level in response to a discharge signal.
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公开(公告)号：US10854155B2
公开(公告)日：2020-12-01
申请号：US16407324
申请日：2019-05-09
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Kyoungwon Lee , Kwan-young Oh , Jimyoung Seo , Bonghyun You , Junghwan Cho , Sangsu Han
Abstract: A display apparatus includes a display panel, a timing controller, a data driver, and a gate driver. The timing controller receives image data at a number of frames per second of a first level and generates a gate control signal and a data control signal. The timing controller includes an image converter that operates in film mode or normal mode when the input image data are moving image data, and that outputs film image data at a number of frames per second of second level lower than the first level during the film mode. The data driver applies a data voltage corresponding to the film image data to the display panel based on the data control signal. The gate driver applies a gate voltage to the display panel based on the gate control signal. The display panel operates at a frequency of the second level during the film mode.
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公开(公告)号：US10535313B2
公开(公告)日：2020-01-14
申请号：US15455885
申请日：2017-03-10
Applicant: Samsung Display Co., Ltd.
Inventor： Seokha Hong , Taejin Kim , Ahyoung Son , Bonghyun You , Jai-Hyun Koh , Sang-Uk Lim
Abstract: Provided is a display device. The display device includes: a plurality of gate lines extending in a first direction; a plurality of data lines extending in a second direction that intersects the first direction; and a plurality of pixels connected to the gate lines and the data lines, wherein the pixels include pixels h-th row pixels (h is a natural number) and (h+1)-th row pixels, which are adjacent to each other in the second direction, with a (k+1)-th gate line (k is a natural number) therebetween among the gate lines; and a first pixel displaying a first color and connected to the (k+1)-th gate line among the h-th row pixels and a second pixel displaying the first color and connected to the (k+1)-th gate line among the (h+1)-th row pixels are spaced apart from each other in the first direction and receive different polarities of data voltages.
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公开(公告)号：US10510280B2
公开(公告)日：2019-12-17
申请号：US16298981
申请日：2019-03-11
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Sangjin Jeon , Ilgon Kim , Dong-Won Park , Bonghyun You , Junki Jeong
IPC: G09G3/36 , G09G3/20 , G02F1/1362 , G02F1/1343 , G02F1/1345
Abstract: A display apparatus includes a display panel, a timing controller, a gate driver, and a data driver. The display panel includes a display area configured to display an image and a non-display area adjacent to a side of the display area in a first direction. The display area includes gate lines, data lines, gate dummy lines, data contact parts, and pixels. The data lines cross the gate lines and are insulated from at least a portion of the gate lines. The gate dummy lines are substantially in parallel to the gate lines and spaced from the gate lines. The data contact parts couple the gate dummy lines to the data lines at a side of the display panel in a second direction substantially perpendicular to the first direction. The pixels are coupled to the gate lines and the data lines.
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