公开(公告)号：US20110249033A1

公开(公告)日：2011-10-13

申请号：US12982373

申请日：2010-12-30

申请人： Won Sik OH ,  Youngsup Kwon ,  Hwanwoong Lee ,  Moonshik Kang ,  Jin-Won Jang

发明人： Won Sik OH ,  Youngsup Kwon ,  Hwanwoong Lee ,  Moonshik Kang ,  Jin-Won Jang

IPC分类号： G09G5/10

CPC分类号： G09G3/3426 ,  G09G3/3648 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2320/0646 ,  G09G2320/0653

摘要： A backlight assembly outputs scan signals having a scanning frequency synchronized with a frame frequency to sequentially drive light emitting blocks providing a light to a display panel. A dimming step of each light emitting block corresponds to one of a plurality of dimming steps in response to local dimming data. A dimming clock having a value obtained by dividing a value obtained by multiplying the scanning frequency and the number is dimming steps by a duty ratio of each scan signal is generated. The dimming step of each light emitting block is counted using the dimming clock, and the counted values are combined with the scan signals to generate dimming signals having a dimming duty ratio corresponding to the dimming step of the light emitting blocks.

摘要翻译： 背光组件输出具有与帧频同步的扫描频率的扫描信号，以顺序驱动向显示面板提供光的发光块。 每个发光块的调光步骤对应于响应于局部调光数据的多个调光步骤之一。 产生通过将通过将扫描频率和数字相乘获得的值除以得到的值的调光时钟，其是通过每个扫描信号的占空比的调光步长。 使用调光时钟对每个发光块的调光步骤进行计数，并将计数值与扫描信号组合，以产生具有对应于发光块的调光步长的调光占空比的调光信号。

公开(公告)号：US08605123B2

公开(公告)日：2013-12-10

申请号：US12982373

申请日：2010-12-30

申请人： Won Sik Oh ,  Youngsup Kwon ,  Hwanwoong Lee ,  Moonshik Kang ,  Jin-Won Jang

发明人： Won Sik Oh ,  Youngsup Kwon ,  Hwanwoong Lee ,  Moonshik Kang ,  Jin-Won Jang

IPC分类号： G09G5/10

CPC分类号： G09G3/3426 ,  G09G3/3648 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2320/0646 ,  G09G2320/0653

摘要： A backlight assembly outputs scan signals having a scanning frequency synchronized with a frame frequency to sequentially drive light emitting blocks providing a light to a display panel. A dimming step of each light emitting block corresponds to one of a plurality of dimming steps in response to local dimming data. A dimming clock having a value obtained by dividing a value obtained by multiplying the scanning frequency and the number is dimming steps by a duty ratio of each scan signal is generated. The dimming step of each light emitting block is counted using the dimming clock, and the counted values are combined with the scan signals to generate dimming signals having a dimming duty ratio corresponding to the dimming step of the light emitting blocks.

摘要翻译： 背光组件输出具有与帧频同步的扫描频率的扫描信号，以顺序驱动向显示面板提供光的发光块。 每个发光块的调光步骤对应于响应于局部调光数据的多个调光步骤之一。 产生通过将通过将扫描频率和数字相乘获得的值除以得到的值的调光时钟，其是通过每个扫描信号的占空比的调光步长。 使用调光时钟对每个发光块的调光步骤进行计数，并将计数值与扫描信号组合，以产生具有对应于发光块的调光步长的调光占空比的调光信号。

公开(公告)号：US08564507B2

公开(公告)日：2013-10-22

申请号：US12973209

申请日：2010-12-20

申请人： Jin-Won Jang ,  Youngsup Kwon ,  Won Sik Oh ,  Min-Soo Choi

发明人： Jin-Won Jang ,  Youngsup Kwon ,  Won Sik Oh ,  Min-Soo Choi

IPC分类号： G09G3/30

CPC分类号： G09G3/342 ,  G09G3/3426 ,  G09G3/3648 ,  G09G2300/0426 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2360/16

摘要： A display apparatus includes a backlight unit which emits a light, and a display panel which receives the light to display an image. The backlight unit includes a driving circuit which outputs a driving voltage and a reference voltage; and p light source blocks connected to the driving circuit, p being a natural number greater than or equal to 2, where each light source block of the p light source blocks receives the driving voltage through a first terminal thereof and the reference voltage through a second terminal thereof to generate the light, and the p light source blocks are divided into a plurality of groups, each group including at least two light source blocks. The driving circuit includes a first switching section which applies the driving voltage to first terminals of the p light source blocks, and a second switching section which applies the reference voltage to the second terminal of at least one of the p light source blocks.

摘要翻译： 显示装置包括发光的背光单元和接收光以显示图像的显示面板。 背光单元包括输出驱动电压和参考电压的驱动电路; 和连接到驱动电路的p个光源块，p是大于或等于2的自然数，其中p个光源块的每个光源块通过其第一端接收驱动电压，并通过第二个第二端接收参考电压 端子以产生光，并且p个光源块被分成多个组，每个组包括至少两个光源块。 驱动电路包括对p个光源块的第一端施加驱动电压的第一开关部和向p个光源块中的至少一个的第二端施加基准电压的第二开关部。

公开(公告)号：US08531132B2

公开(公告)日：2013-09-10

申请号：US12902731

申请日：2010-10-12

申请人： Won-Sik Oh ,  Youngsup Kwon ,  Min-Soo Choi

发明人： Won-Sik Oh ,  Youngsup Kwon ,  Min-Soo Choi

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  H05B33/0893 ,  H05B37/036

摘要： A backlight unit includes a driving circuit, a plurality of light source strings, and an error detector. The driving circuit outputs a driving voltage. Each of the light source strings includes a plurality of light sources and receives the driving voltage through input terminals of the light source strings to generate a light. The error detector is connected to output terminals of the light source strings and senses voltages between the input terminals and the output terminals of the light source strings to detect an error in the light sources using a first voltage and a second voltage. The first voltage is a voltage difference between a maximum and a minimum of the sensed voltages and the second voltage is obtained by dividing one sensed voltage of the sensed voltages by a number of the light sources of a light source string from which the one sensed voltage is sensed.

摘要翻译： 背光单元包括驱动电路，多个光源串和误差检测器。 驱动电路输出驱动电压。 每个光源串包括多个光源，并且通过光源串的输入端接收驱动电压以产生光。 误差检测器连接到光源串的输出端，并感测输入端和光源串的输出端之间的电压，以使用第一电压和第二电压来检测光源中的误差。 第一电压是感测电压的最大值和最小值之间的电压差，并且第二电压是通过将感测电压的一个感测电压除以光源串的光源数量而获得的，其中一个感测电压 被感测。

公开(公告)号：US08779665B2

公开(公告)日：2014-07-15

申请号：US13313198

申请日：2011-12-07

申请人： Won Sik Oh ,  Youngsup Kwon ,  Jaekyu Park ,  Eun Chul Shin ,  Jaeeun Um

发明人： Won Sik Oh ,  Youngsup Kwon ,  Jaekyu Park ,  Eun Chul Shin ,  Jaeeun Um

IPC分类号： H05B37/02

CPC分类号： G09G3/342 ,  G09G2320/04 ,  G09G2330/08 ,  G09G2330/12

摘要： A backlight unit including: at least one light emitting diode (“LED”) string having an anode, which receives a string current, and a chassis-grounded cathode; and a current source control unit which receives a driving current and outputs the string current to the at least one LED string, where the current source control unit senses the driving current and compensates for the string current based on the sensed driving current and a reference voltage.

摘要翻译： 一种背光单元，包括：具有接收串电流的阳极和底盘接地阴极的至少一个发光二极管（“LED”）串; 以及电流源控制单元，其接收驱动电流并将所述串电流输出到所述至少一个LED串，其中所述电流源控制单元感测所述驱动电流并且基于所感测的驱动电流和参考电压来补偿所述串电流 。