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公开(公告)号：US12057076B2
公开(公告)日：2024-08-06
申请号：US18086762
申请日：2022-12-22
Applicant: Samsung Display Co., Ltd.
Inventor： Dae-Sik Lee , Siduk Sung , Songyi Han
IPC: G09G3/30 , G09G3/3266
CPC classification number: G09G3/3266 , G09G2310/0289 , G09G2310/08 , G09G2330/02 , G09G2330/025 , G09G2330/04 , G09G2330/12
Abstract: A display device may include a timing controller which generates on-clock and off-clock signals, a level shifter which sequentially generates gate clock signals each having a rising edge and a falling edge respectively synchronized with a rising edge of the on-clock signal and a falling edge of the off-clock signal, the gate clock signals having a voltage corresponding to a gate driving voltage, a gate driver generating gate signals based on the gate clock signals, an over-current detector detecting an over-current by sensing a current of each of the gate clock signals at a time point when the falling edge of the on-clock signal is generated in an on-current detection mode, and generates a shutdown signal in response to the detected over-current, and a voltage generator providing the gate driving voltage to the level shifter and stops providing the gate driving voltage in response to the generated shutdown signal.
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公开(公告)号：US11847981B2
公开(公告)日：2023-12-19
申请号：US18149443
申请日：2023-01-03
Applicant: Samsung Display Co., Ltd.
Inventor： Kihyun Pyun , Moonshik Kang , Dae-Sik Lee , Jun Pyo Lee , Min-Soo Choi , Songyi Han
CPC classification number: G09G3/3406 , H05B45/14 , G09G2330/023 , G09G2360/145
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：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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4.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：US10515594B2
公开(公告)日：2019-12-24
申请号：US15493565
申请日：2017-04-21
Applicant: Samsung Display Co., Ltd.
Inventor： Jin-won Jang , Won-hyoung Kang , Seung-wan Kim , Gwangteak Lee , Songyi Han , Jin-taek Hong , Seunghwan Moon
Abstract: A backlight unit includes a light source module including a first connection pin and a second connection pin electrically connected to the first connection pin, a power converter which provides a driving voltage to the light source module, a connector which receives a first enable signal via a first signal line and provides a second enable signal via a second signal line and a driving circuit which controls a generation of the driving voltage from the power converter in response to the second enable signal. When the connector is electrically connected to the first and second connection pins, the first enable signal is transmitted to the first connection pin via the first signal line and the connector, and the second enable signal from the second connection pin is provided to the driving circuit via the connector and the second signal line.
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Patent Agency Ranking
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：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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公开(公告)号：US10403213B2
公开(公告)日：2019-09-03
申请号：US15435496
申请日：2017-02-17
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Songyi Han , Jin-won Jang , Jin-taek Hong
Abstract: A cradle according to an embodiment may include a housing to be coupled to display modules having various sizes and a light source driver inside the housing. The light source driver may generate a first driving voltage and a second driving voltage to be provided to a light source of the display module coupled to the housing. When the display module has a first size, the light source driver may supply only the first driving voltage to the display module. When the display module has a second size, larger than the first size, the light source driver outputs both the first and second driving voltages to the display module.
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公开(公告)号：US20170263193A1
公开(公告)日：2017-09-14
申请号：US15455749
申请日：2017-03-10
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Songyi Han , Gwangteak Lee , Won-Hyoung Kang
CPC classification number: G09G3/3406 , G09G3/342 , G09G3/3611 , G09G3/3648 , G09G2310/0237 , G09G2320/0626 , G09G2320/0646
Abstract: Provided is a display device including a plurality of light sources configured to be driven by a driving voltage, turned on during an on section, and turned off during an off section, a display panel configured to display an image by using light outputted from the light sources, a voltage converter connected to the light sources and configured to generate the driving voltage, and a backlight control circuit including a light source driving circuit and a voltage drop circuit. The light source driving circuit includes a pulse generator including a control input terminal configured to receive a first voltage during the on section and receive a second voltage during the off section and output a control pulse signal to control a level of the driving voltage based on a voltage applied to the control input terminal. The voltage drop circuit applies the second voltage to the control input terminal during the off section. The second voltage is smaller than the first voltage.
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10.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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