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    Method of driving backlight unit and display device having the backlight unit
    1.
    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

    IPC: H05B37/00 ,  G09F13/04 ,  G09G3/34 ,  H05B33/08

    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。

    Backlight unit and a display apparatus having the same
    2.
    发明授权
    Backlight unit and a display apparatus having the same 有权
    背光单元和具有该背光单元的显示装置

    公开(公告)号：US09288883B2

    公开(公告)日：2016-03-15

    申请号：US13734400

    申请日：2013-01-04

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Woojin Lee ,  Songyi Han ,  SeungYoung Choi

    IPC: H05B33/08 ,  H05B37/03 ,  G06F3/038

    CPC classification number: H05B37/036 ,  G06F3/038 ,  H05B33/0815 ,  H05B33/0827

    Abstract: A backlight unit includes a power converter which generates a light driving voltage in response to a voltage control signal with a first level, a plurality of light emitting strings, wherein each of the light emitting strings receives the light driving voltage through a first end thereof, and a controller which generates the voltage control signal. The controller is connected to a second end of at least one of the light emitting strings and detects a level of a signal at the connected second end to detect an operation state of the light emitting strings. The controller generates the voltage control signal with a second level to stop the power converter from generating the light driving voltage when the operation state of the light emitting strings is in an abnormal state.

    Abstract translation: 背光单元包括响应于具有第一电平的电压控制信号而产生光驱动电压的功率转换器，多个发光串，其中每个发光串通过其第一端接收光驱动电压， 以及产生电压控制信号的控制器。 控制器连接到至少一个发光串的第二端，并检测连接的第二端的信号电平，以检测发光串的操作状态。 当发光串的操作状态处于异常状态时，控制器产生具有第二电平的电压控制信号，以停止功率转换器产生光驱动电压。

    Backlight unit and display device including the same
    3.
    发明授权
    Backlight unit and display device including the same 有权
    背光单元和显示设备包括相同

    公开(公告)号：US09142189B2

    公开(公告)日：2015-09-22

    申请号：US13767170

    申请日：2013-02-14

    Applicant: Samsung Display Co., Ltd.

    Inventor： SeungYoung Choi ,  Min-Soo Choi ,  Hwanwoong Lee ,  Gwangteak Lee

    IPC: G09G5/10

    CPC classification number: G09G5/10 ,  G09G5/34

    Abstract: A backlight unit includes a power supply converter including a primary winding connected to an input power supply voltage, and a secondary winding which is connected to an output node and outputs a light emitting diode drive voltage to the output node in response to a mode signal and a switching control signal; and a light emitting diode string connected to the output node of the power supply converter, where the power supply converter serially connects a boosting winding to the secondary winding and the output node and when the mode signal represents a three dimensional image display mode, and outputs a boosted light emitting diode drive voltage to the output node through the boosting winding.

    Abstract translation: 背光单元包括电源转换器，其包括连接到输入电源电压的初级绕组和连接到输出节点的次级绕组，并且响应于模式信号将输出节点的发光二极管驱动电压输出， 切换控制信号; 以及连接到电源转换器的输出节点的发光二极管串，其中电源转换器将升压绕组串联连接到次级绕组和输出节点，并且当模式信号表示三维图像显示模式时，并且输出 升压的发光二极管通过升压绕组驱动电压到输出节点。

    BACKLIGHT UNIT AND A DISPLAY APPARATUS HAVING THE SAME
    5.
    发明申请
    BACKLIGHT UNIT AND A DISPLAY APPARATUS HAVING THE SAME 有权
    背光单元和具有相同功能的显示设备

    公开(公告)号：US20140055439A1

    公开(公告)日：2014-02-27

    申请号：US13734400

    申请日：2013-01-04

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Woojin Lee ,  Songyi Han ,  SeungYoung Choi

    IPC: H05B37/03 ,  G06F3/038

    CPC classification number: H05B37/036 ,  G06F3/038 ,  H05B33/0815 ,  H05B33/0827

    Abstract: A backlight unit includes a power converter which generates a light driving voltage in response to a voltage control signal with a first level, a plurality of light emitting strings, wherein each of the light emitting strings receives the light driving voltage through a first end thereof, and a controller which generates the voltage control signal. The controller is connected to a second end of at least one of the light emitting strings and detects a level of a signal at the connected second end to detect an operation state of the light emitting strings. The controller generates the voltage control signal with a second level to stop the power converter from generating the light driving voltage when the operation state of the light emitting strings is in an abnormal state.

    Abstract translation: 背光单元包括响应于具有第一电平的电压控制信号而产生光驱动电压的功率转换器，多个发光串，其中每个发光串通过其第一端接收光驱动电压， 以及产生电压控制信号的控制器。 控制器连接到至少一个发光串的第二端，并检测连接的第二端的信号电平，以检测发光串的操作状态。 当发光串的操作状态处于异常状态时，控制器产生具有第二电平的电压控制信号，以停止功率转换器产生光驱动电压。

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