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：US08314768B2

公开(公告)日：2012-11-20

申请号：US12705608

申请日：2010-02-14

申请人： Min-Soo Choi ,  Hwanwoong Lee ,  Won Sik Oh

发明人： Min-Soo Choi ,  Hwanwoong Lee ,  Won Sik Oh

IPC分类号： G09G3/36

CPC分类号： G09G3/3406 ,  G09G3/006

摘要： A backlight unit includes light source groups, a converter, a compensator, a detector and a protector. Each of the light source groups includes a light source, and the converter boosts an input voltage to a driving voltage that is supplied to the light source groups. The compensator is connected to the light source groups and compensates a deviation between currents fed back to the compensator from each of the light source groups. The detector is connected between the compensator and the light source groups and detects a maximum voltage from among feedback voltages fed back to the compensator from each of the light source groups. The protector is connected to the detector and receives the maximum voltage, and compares the maximum voltage to a reference voltage to generate a compared result. The protector outputs a protection signal to the converter based on the compared result.

摘要翻译： 背光单元包括光源组，转换器，补偿器，检测器和保护器。 每个光源组包括光源，并且转换器将输入电压升压到提供给光源组的驱动电压。 补偿器连接到光源组并补偿从每个光源组反馈到补偿器的电流之间的偏差。 检测器连接在补偿器和光源组之间，并检测从每个光源组反馈给补偿器的反馈电压中的最大电压。 保护器连接到检测器并接收最大电压，并将最大电压与参考电压进行比较，以产生比较结果。 保护器根据比较结果向转换器输出保护信号。

公开(公告)号：US20110032179A1

公开(公告)日：2011-02-10

申请号：US12705608

申请日：2010-02-14

申请人： Min-Soo Choi ,  Hwanwoong Lee ,  Won Sik Oh

发明人： Min-Soo Choi ,  Hwanwoong Lee ,  Won Sik Oh

IPC分类号： G09G3/36

CPC分类号： G09G3/3406 ,  G09G3/006

摘要： A backlight unit includes light source groups, a converter, a compensator, a detector and a protector. Each of the light source groups includes a light source, and the converter boosts an input voltage to a driving voltage that is supplied to the light source groups. The compensator is connected to the light source groups and compensates a deviation between currents fed back to the compensator from each of the light source groups. The detector is connected between the compensator and the light source groups and detects a maximum voltage from among feedback voltages fed back to the compensator from each of the light source groups. The protector is connected to the detector and receives the maximum voltage, and compares the maximum voltage to a reference voltage to generate a compared result. The protector outputs a protection signal to the converter based on the compared result.

摘要翻译： 背光单元包括光源组，转换器，补偿器，检测器和保护器。 每个光源组包括光源，并且转换器将输入电压升压到提供给光源组的驱动电压。 补偿器连接到光源组并补偿从每个光源组反馈到补偿器的电流之间的偏差。 检测器连接在补偿器和光源组之间，并检测从每个光源组反馈给补偿器的反馈电压中的最大电压。 保护器连接到检测器并接收最大电压，并将最大电压与参考电压进行比较，以产生比较结果。 保护器根据比较结果向转换器输出保护信号。