公开(公告)号：US20140111497A1

公开(公告)日：2014-04-24

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。

公开(公告)号：US20160081144A1

公开(公告)日：2016-03-17

申请号：US14676469

申请日：2015-04-01

Applicant: Samsung Display Co., Ltd.

Inventor： Dae-Sik LEE ,  Jin-Won JANG ,  SeungYoung CHOI

IPC: H05B33/08 ,  G09G5/10

CPC classification number: H05B33/083 ,  G09G3/342 ,  G09G5/10 ,  G09G2300/0426 ,  G09G2320/0285 ,  G09G2320/0626 ,  G09G2330/025 ,  G09G2330/045 ,  H05B33/0827 ,  H05B33/089

Abstract: Provided is a display device. According to one embodiment, the display device includes: a backlight unit with a plurality of light emitting strings including at least one light emitting diode; and a display panel displaying an image using light outputted from the backlight unit, wherein the backlight unit includes: a light source unit including the plurality of light emitting strings and a plurality of photo transistors controlling the plurality of light emitting strings; a DC-DC converter outputting the driving voltage to the light source unit; and a driving control unit applying activated gate voltages to turn on the plurality of photo transistors and detecting driving time differences between an output time for outputting the driving voltage and applying times for applying the gate voltages.

Abstract translation: 提供了一种显示装置。 根据一个实施例，显示装置包括：具有包括至少一个发光二极管的多个发光串的背光单元; 以及显示面板，使用从所述背光单元输出的光显示图像，其中，所述背光单元包括：包括所述多个发光串的光源单元和控制所述多个发光串的多个光电晶体管; 将驱动电压输出到所述光源单元的DC-DC转换器; 以及驱动控制单元，施加激活的栅极电压以接通多个光电晶体管，并且检测用于输出驱动电压的输出时间和施加栅极电压的施加时间之间的驱动时间差。

公开(公告)号：US20160029449A1

公开(公告)日：2016-01-28

申请号：US14609344

申请日：2015-01-29

Applicant: Samsung Display Co., Ltd.

Inventor： Dae-Sik LEE ,  SONGYI HAN ,  SeungYoung CHOI

IPC: H05B33/08 ,  G09G3/32 ,  G09G3/34

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。