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    GATE CLOCK GENERATOR AND DISPLAY DEVICE
    22.
    发明申请
    GATE CLOCK GENERATOR AND DISPLAY DEVICE 有权

    公开(公告)号：US20220019256A1

    公开(公告)日：2022-01-20

    申请号：US17206784

    申请日：2021-03-19

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Siduk Sung ,  Dae-Sik Lee ,  Sanghyun Lee

    IPC: G06F1/08 ,  G09G3/20 ,  G06F1/10

    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.

    Backlight unit, display apparatus having the same, and image display system
    23.
    发明授权
    Backlight unit, display apparatus having the same, and image display system 有权

    公开(公告)号：US10152925B2

    公开(公告)日：2018-12-11

    申请号：US14850773

    申请日：2015-09-10

    Applicant: Samsung Display Co., Ltd.

    Inventor： Taegon Im ,  Min-Soo Choi ,  Min-Gyu Kim ,  Youngsup Kwon ,  Eun Chul Shin ,  Dae-Sik Lee

    IPC: G09G3/34 ,  G09G3/00

    Abstract: A backlight unit includes a light source part including a light-emitting diode array, a DC/DC converter, a driving current controller, and a reference voltage variable part. The backlight unit is operated in a first mode or a second mode. The driving current controller controls a driving current flowing through the light-emitting diode array to have a first current level during the first mode and controls the driving current flowing through the light-emitting diode array to have a second current level during the second mode. The reference voltage variable part applies a first reference voltage to the driving current controller during the first mode and applies a second reference voltage to the driving current controller during the second mode.

    Display device, multi-display device including the same, and method for driving the same
    24.
    发明授权
    Display device, multi-display device including the same, and method for driving the same 有权
    显示装置，包括其的多显示装置及其驱动方法

    公开(公告)号：US09529561B2

    公开(公告)日：2016-12-27

    申请号：US14452692

    申请日：2014-08-06

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Seok Hwan Lee ,  Dae-Sik Lee ,  Hwan Woong Lee ,  Seung Young Choi

    IPC: G09G5/10 ,  G06F3/14 ,  G09G3/34

    CPC classification number: G06F3/1423 ,  G09G3/3406 ,  G09G3/342 ,  G09G2320/0233 ,  G09G2360/145

    Abstract: A display device is provided. The display device includes a display panel, a backlight unit, and a luminance comparison unit. The backlight unit is configured to supply light to the display panel. The luminance comparison unit is configured to compare a measured luminance of the display panel with a reference luminance range. The backlight unit includes a light source unit, a DC-DC converter, and a driving current controller. The DC-DC converter is configured to supply a driving voltage to the light source unit, and the driving current controller is configured to control a driving current flowing to the light source unit based on the comparison result of the luminance comparison unit.

    Abstract translation: 提供显示装置。 显示装置包括显示面板，背光单元和亮度比较单元。 背光单元被配置为向显示面板提供光。 亮度比较单元被配置为将显示面板的测量亮度与参考亮度范围进行比较。 背光单元包括光源单元，DC-DC转换器和驱动电流控制器。 DC-DC转换器被配置为向光源单元提供驱动电压，并且驱动电流控制器被配置为基于亮度比较单元的比较结果来控制流向光源单元的驱动电流。

    Display device and method of driving the same
    25.
    发明授权
    Display device and method of driving the same 有权

    公开(公告)号：US11929014B2

    公开(公告)日：2024-03-12

    申请号：US17869218

    申请日：2022-07-20

    Applicant: Samsung Display Co., Ltd.

    Inventor： Kihyun Pyun ,  Sung-Mo Yang ,  Seungho Park ,  Dae-Sik Lee

    IPC: G09G3/32

    CPC classification number: G09G3/32 ,  G09G2300/0828 ,  G09G2320/0271 ,  G09G2330/021

    Abstract: A display device includes a display panel which displays an image based on input image data, a driving controller which generates a voltage control signal for adjusting a first power voltage applied to the display panel in an (N+M)-th frame based on a maximum grayscale value of the input image data of an N-th frame, where N is a positive integer, and M is a positive integer, and a power voltage generator which senses a power current applied to the display panel in the (N+M)-th frame, generates a second power voltage based on the voltage control signal, and controls a voltage level of the first power voltage based on the second power voltage and a current level of the power current.

    Light emitting device and display device having the same
    27.
    发明授权
    Light emitting device and display device having the same 有权

    公开(公告)号：US11304275B2

    公开(公告)日：2022-04-12

    申请号：US16899061

    申请日：2020-06-11

    Applicant: Samsung Display Co., LTD.

    Inventor： Dae-Sik Lee ,  Jiyoun Seo

    IPC: H05B45/14 ,  H05B45/325 ,  H05B45/48 ,  G02F1/13357 ,  H05K1/18 ,  G02F1/1335

    Abstract: A light emitting device includes a light source panel including light emitting units, and a printed circuit board including a light source driving circuit electrically connected to the light source panel. The light source driving circuit receives a feedback voltage from each of the light emitting units, and compares the feedback voltage with a reference voltage to output a current control signal. Each of the light emitting units includes a light emitting diode connected to a first voltage line, a switching element connected with the light emitting diode and operating in response to the current control signal, and a resistor electrically connected between a feedback node and a second voltage line. The resistor includes a conductive pattern having a predetermined width disposed on the light source panel.

    Power voltage generating circuit and display apparatus having the same and method of protecting data driver using the same
    28.
    发明授权
    Power voltage generating circuit and display apparatus having the same and method of protecting data driver using the same 有权

    公开(公告)号：US10957277B2

    公开(公告)日：2021-03-23

    申请号：US16376922

    申请日：2019-04-05

    Applicant: Samsung Display Co., Ltd.

    Inventor： Dae-Sik Lee ,  Yanguk Nam ,  Songyi Han

    IPC: G09G5/00

    Abstract: A power voltage generating circuit includes an input capacitor including a first end connected to an input node, and a second end connected to a ground, an inductor, an input switching element connected between the input node and a first end of the inductor, a control switching element including a control electrode connected to a switching controller configured to apply a switching control signal, an input electrode connected to a resistor, and an output electrode connected to a second end of the inductor, a diode including a first electrode connected to the second end of the inductor, and a second electrode connected to an output node, and an output capacitor connected between the output node and the ground, wherein the input switching element is configured to be turned off when a short circuit of a load connected to the output node is detected in a monitoring period.

    Gate driving device and display device having the same
    29.
    发明授权
    Gate driving device and display device having the same 有权

    公开(公告)号：US10916167B2

    公开(公告)日：2021-02-09

    申请号：US16248112

    申请日：2019-01-15

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Dae-Sik Lee ,  Yanguk Nam ,  Yoomi Kim

    IPC: G09G3/20 ,  G09G3/36 ,  G02F1/1362 ,  H01L27/32 ,  G09G3/3266

    Abstract: A gate driving device of a display device may include a voltage generator, a gate controller and a gate driver. The voltage generator may generate a gate driving voltage that varies between a gate-on voltage and a gate-off voltage. The gate controller may generate gate clock signals based on the gate driving voltage and gate control signals. The gate driver may generate a gate signal based on the gate clock signals. The gate control signals may include a first control signal and clock control signals, each varying between a high level and a low level. The gate controller may output the gate clock signals having a voltage level of the gate-off voltage when the first control signal and the clock control signals are each provided to the gate controller at the low level, thereby avoiding a display defect due to voltage ramping that may otherwise occur.

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