公开(公告)号：US20130113390A1

公开(公告)日：2013-05-09

申请号：US13416228

申请日：2012-03-09

申请人： Won Sik OH ,  Gun Woo MOON ,  Shin Young CHO ,  Dae Youn CHO

发明人： Won Sik OH ,  Gun Woo MOON ,  Shin Young CHO ,  Dae Youn CHO

IPC分类号： H05B37/02 ,  G05F1/00

CPC分类号： H05B33/0815 ,  Y02B20/346

摘要： A direct current to direct current converter includes: an input terminal; an output terminal having voltage higher than the input terminal; a coupled inductor boost cell including a coupled inductor connected to the input terminal, a switch connected to the coupled inductor, and an output diode connected to the output terminal; and a clamp and energy transfer cell including a clamp diode connected to the coupled inductor, a clamp capacitor connected to the clamp diode, and an energy transfer diode connected to the output diode.

摘要翻译： 直流电流转换器包括：输入端; 具有比输入端高的电压的输出端子; 耦合电感升压单元，包括连接到输入端子的耦合电感器，连接到耦合电感器的开关和连接到输出端子的输出二极管; 以及夹持和能量传递单元，其包括连接到耦合电感器的钳位二极管，连接到钳位二极管的钳位电容器和连接到输出二极管的能量传输二极管。

公开(公告)号：US20110279485A1

公开(公告)日：2011-11-17

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： G09G5/10

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：US20120120128A1

公开(公告)日：2012-05-17

申请号：US13169252

申请日：2011-06-27

申请人： Won Sik OH ,  Jin-Taek HONG

发明人： Won Sik OH ,  Jin-Taek HONG

IPC分类号： G09G5/10

CPC分类号： G09G3/342 ,  G09G3/003 ,  G09G3/3611 ,  G09G2310/08 ,  H04N13/341 ,  H04N13/398

摘要： A display apparatus includes a display panel including nxm array of pixels and which sequentially drives the pixels from pixels in a first row to pixels in an n-th row, a panel driving circuit which sequentially applies first, second, third or fourth image data to the display panel, a backlight unit including a first light source disposed adjacent to the pixels in the first row and a second light source disposed adjacent to the pixels in the n-th row, and a backlight control circuit which divides each of first and second time periods into first, second, third and fourth blinking time periods, and applies a control signal to the backlight unit, where the first time period corresponds to two frames during which the first and second image data are applied, and the second time period corresponds to two frames during which the third and fourth image data are applied.

摘要翻译： 显示装置包括：显示面板，其包括n×m个像素阵列，并且将第一行中的像素顺序地驱动到第n行中的像素;面板驱动电路，顺序地将第一，第二，第三或第四图像数据应用于 所述显示面板，包括邻近所述第一行中的像素布置的第一光源和与所述第n行中的像素相邻设置的第二光源的背光单元以及将第一和第二行中的每一个分隔开的背光控制电路 时间段转换为第一，第二，第三和第四闪烁时间段，并且将控制信号施加到背光单元，其中第一时间段对应于施加第一和第二图像数据的两个帧，并且第二时间段对应于 到其中应用第三和第四图像数据的两个帧。

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。