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公开(公告)号：US11580917B2
公开(公告)日：2023-02-14
申请号：US17235105
申请日：2021-04-20
Applicant: Samsung Display Co., Ltd.
Inventor： Kihyun Pyun , Moonshik Kang , Dae-Sik Lee , Jun Pyo Lee , Min-Soo Choi , Songyi Han
Abstract: A light source apparatus includes a plurality of light source gate lines extending in a first direction, a plurality of light source data lines extending in a second direction crossing the first direction, a plurality of light source emission lines, a plurality of feedback lines and a plurality of light source blocks. At least one of the light source blocks is connected to the light source gate line, the light source data line, the light source emission line and the feedback line.
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公开(公告)号：US11114056B2
公开(公告)日：2021-09-07
申请号：US16388231
申请日：2019-04-18
Applicant: Samsung Display Co., Ltd.
Inventor： Yanguk Nam , Dae-Sik Lee , Taegon Im
IPC: G09G5/00
Abstract: A display apparatus includes a display panel, a data driver, a power voltage generator, a driving controller and a timing compensator. The display panel displays an image based on input image data. The data driver outputs a data voltage to the display panel. The power voltage generator outputs a data power voltage to the data driver. The driving controller controls a driving timing of the data driver. The timing compensator changes an output timing of the data voltage of the data driver when a feedback data power voltage is less than a reference data power voltage at a start point of an active period.
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公开(公告)号：US11004405B2
公开(公告)日：2021-05-11
申请号：US16725202
申请日：2019-12-23
Applicant: Samsung Display Co., Ltd.
Inventor： Kihyun Pyun , Moonshik Kang , Dae-Sik Lee , Jun Pyo Lee , Min-Soo Choi , Songyi Han
Abstract: A light source apparatus includes a plurality of light source gate lines extending in a first direction, a plurality of light source data lines extending in a second direction crossing the first direction, a plurality of light source emission lines, a plurality of feedback lines and a plurality of light source blocks. At least one of the light source blocks is connected to the light source gate line, the light source data line, the light source emission line and the feedback line.
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14.发明授权Method of driving backlight unit and display device having the backlight unit 有权驱动具有背光单元的背光单元和显示装置的方法公开(公告)号：US09530359B2
公开(公告)日：2016-12-27
申请号：US14609344
申请日：2015-01-29
Applicant: Samsung Display Co., Ltd.
Inventor： Dae-Sik Lee , Songyi Han , SeungYoung Choi
CPC classification number: G09G3/3406 , H05B33/0815 , H05B33/086
Abstract: According to an exemplary embodiment, a display device includes a backlight unit and a display panel. The backlight unit comprises a single light emitting diode string with a plurality of light emitting diodes that are connected to each other in series and configured to emit light. The backlight unit also comprises a detector configured to generate a first voltage and a second voltage with respect to an output voltage for driving the single light emitting diode string, sample the first voltage at a predetermined time interval to generate a sample voltage, and compare a level of the sample voltage with a level of the second voltage to generate a compared result. The display panel is configured to receive light from the backlight unit to display an image. The compared result determines whether the output voltage is applied to the light emitting diode string.
Abstract translation: 根据示例性实施例，显示装置包括背光单元和显示面板。 背光单元包括具有串联并被配置为发光的多个发光二极管的单个发光二极管串。 背光单元还包括检测器，被配置为相对于用于驱动单个发光二极管串的输出电压产生第一电压和第二电压，以预定时间间隔采样第一电压以产生采样电压，并且比较 采样电压的电平与第二电压的电平相乘以产生比较结果。 显示面板被配置为从背光单元接收光以显示图像。 比较结果确定输出电压是施加到发光二极管串。
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公开(公告)号：US11862097B2
公开(公告)日：2024-01-02
申请号：US18087902
申请日：2022-12-23
Applicant: Samsung Display Co., Ltd.
Inventor： Sanghyun Lee , Dae-Sik Lee , Keunoh Kang , Siduk Sung , Songyi Han
IPC: G09G3/3258 , G09G3/00
CPC classification number: G09G3/3258 , G09G3/006 , G09G2330/021 , G09G2330/04 , G09G2330/045 , G09G2330/12
Abstract: A display device includes a display panel including a pixel circuit, a display panel driving circuit that drives the display panel, a voltage generating circuit that receives an input power supply voltage when the display device is powered on and generates display panel voltages and driving circuit voltages based on the input power supply voltage, and an over-current protecting circuit that monitors an over-current generated inside the display device and generates a shut-down request signal when the over-current is detected. The voltage generating circuit outputs an initialization voltage at a first time point corresponding to a time point at which the input power supply voltage is received. The display panel driving circuit outputs a scan clock signal at a second time point. The over-current protecting circuit performs a first over-current protecting operation in a power-on monitoring period set between the first time point and the second time point.
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Patent Agency Ranking
16.发明授权公开(公告)号：US11847951B2
公开(公告)日：2023-12-19
申请号：US17979028
申请日：2022-11-02
Applicant: Samsung Display Co., Ltd.
Inventor： Sanghyun Lee , Dae-Sik Lee , Keunoh Kang , Siduk Sung , Songyi Han
IPC: G09G3/20
CPC classification number: G09G3/2011 , G09G2310/027 , G09G2320/0276 , G09G2320/0673
Abstract: A gamma voltage generator within a display device includes a plurality of gamma generation circuits that respectively generate a plurality of gamma voltages. At least one gamma generation circuit includes an input circuit configured to receive a first reference voltage and a second reference voltage, a reference voltage select circuit configured to select a reference voltage among the first reference voltage and the second reference voltage by comparing a gamma voltage generated by the at least one gamma generation circuit with the first reference voltage and the second reference voltage, a digital-to-analog conversion circuit configured to generate an analog voltage corresponding to a gamma code based on the reference voltage selected by the reference voltage select circuit, and an output circuit configured to output the gamma voltage based on the analog voltage.
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公开(公告)号：US11592859B2
公开(公告)日：2023-02-28
申请号：US17206784
申请日：2021-03-19
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Siduk Sung , Dae-Sik Lee , Sanghyun Lee
Abstract: A gate clock generator of a display device includes a carry clock generator configured to sequentially generate N carry clock signals based on a carry-on clock signal and a carry-off clock signal, a scan clock generator configured to generate N scan clock signals based on a scan-on clock signal and a scan-off clock signal, and a sensing clock generator configured to generate N sensing clock signals based on a sensing-on clock signal and a sensing-off clock signal. In a multi-clock mode of the display device, during an on period of a K-th carry clock signal, the scan clock generator outputs a K-th scan clock signal such that the K-th scan clock signal has a number of pulses that corresponds to a number of pulses of the scan-on clock signal in the on period of the K-th carry clock signal, and the sensing clock generator outputs a K-th sensing clock signal such that the K-th sensing clock signal has a number of pulses that corresponds to a number of pulses of the sensing-on clock signal in the on period of the K-th carry clock signal.
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公开(公告)号：US11069304B2
公开(公告)日：2021-07-20
申请号：US16790525
申请日：2020-02-13
Applicant: Samsung Display Co., Ltd.
Inventor： Dae-Sik Lee , Yoongu Kim , Seung Young Choi , Keunoh Kang , Kihyun Pyun
Abstract: A light source apparatus includes a light source and a light source driver. The light source includes a plurality of scan blocks. Each scan block includes a plurality of local dimming blocks. The light source driver includes a plurality of channels configured to output light source driving signals to the plurality of local dimming blocks. The light source driving signal includes a light source intensity value representing a light intensity of a local dimming block from among the plurality of local dimming blocks and a delay value representing a degree of a delay of the local dimming block. The delay value is determined by a scan delay value varied according to the plurality of scan blocks and a delay parameter.
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公开(公告)号：US10935823B2
公开(公告)日：2021-03-02
申请号：US16260936
申请日：2019-01-29
Applicant: Samsung Display Co., Ltd.
Inventor： Dae-Sik Lee , Yanguk Nam , Sanghyun Lee
IPC: G02F1/13 , G09G3/3266 , G09G3/00 , G02F1/1345 , G09G3/36
Abstract: A short-circuit detection circuit includes a voltage comparison block that receives a scan start signal from a scan start signal transmission line, receives a reference voltage from a reference voltage source, and outputs a comparison result by comparing the scan start signal with the reference voltage at a falling edge of a vertical start signal, and a short-circuit determination block that determines whether the scan start signal transmission line is short-circuited based on the comparison result and operates an over-current protection circuit by providing a short-circuit detection signal to the over-current protection circuit when the scan start signal transmission line is short-circuited.
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20.发明授权公开(公告)号：US12131686B2
公开(公告)日：2024-10-29
申请号：US16898439
申请日：2020-06-11
Applicant: Samsung Display Co., Ltd.
Inventor： Sang Hyun Lee , Si Duk Sung , Dae-Sik Lee
IPC: G09G3/32
CPC classification number: G09G3/32 , G09G2310/0205 , G09G2310/066
Abstract: The current disclosure relates to a display device including a display panel including a plurality of pixels, and a plurality of gate lines and a plurality of data lines connected to the plurality of pixels, a gate driver applying a gate signal to the plurality of gate lines, a data driver applying a data signal to the plurality of data lines, and a voltage provider configured to generate a gate-on voltage that is gradually changed in one frame and a kickback voltage that is gradually changed in one frame to transmit the gate-on voltage and the kickback voltage to the gate driver.
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