公开(公告)号：US20100156307A1

公开(公告)日：2010-06-24

申请号：US12535387

申请日：2009-08-04

Applicant: Jong Duck KIM ,  Jae Eun Kim ,  Ki Soo Kim

Inventor： Jong Duck KIM ,  Jae Eun Kim ,  Ki Soo Kim

IPC: H05B37/02

CPC classification number: H05B33/0815 ,  G09G2330/02 ,  H05B33/089 ,  H05K1/18

Abstract: There is provided a power supply for a light emitting diode display using a light emitting diode as a backlight unit that unites a DC power supply provided from outside the light emitting diode display and a driving power supply provided inside the light emitting diode display. A power supply of a light emitting diode display according to an aspect of the invention may include: a power conversion unit converting commercial AC power into at least one driving power having a predetermined voltage level; and a backlight driving unit generating a backlight driving signal using the driving power from the power conversion unit, wherein the power conversion unit and the backlight driving unit are mounted onto one printed circuit board.

Abstract translation: 提供了一种使用发光二极管作为背光单元的发光二极管显示器的电源，该背光单元将从发光二极管显示器外部提供的直流电源与设置在发光二极管显示器内部的驱动电源相结合。 根据本发明的一个方面的发光二极管显示器的电源可以包括：功率转换单元，将商用AC电力转换成具有预定电压电平的至少一个驱动功率; 以及背光驱动单元，其使用来自所述电力转换单元的驱动电力产生背光驱动信号，其中所述电力转换单元和所述背光驱动单元安装在一个印刷电路板上。

公开(公告)号：US20110101884A1

公开(公告)日：2011-05-05

申请号：US12838077

申请日：2010-07-16

Applicant: Jong Duck KIM ,  Chang Hee LEE

Inventor： Jong Duck KIM ,  Chang Hee LEE

IPC: H05B41/36

CPC classification number: H02M3/155 ,  H02M2001/007 ,  H05B33/0815 ,  H05B33/0851

Abstract: There is provided a multi-stage power supply. A multi-stage power supply according to an aspect of the invention may include: a voltage converter circuit section including a plurality of first to n-th DC/DC converters connected in series between an input terminal and an output terminal, in order to supply a DC driving voltage to an LED array having a plurality of LEDs therein; a voltage detection section detecting an output voltage from the voltage converter circuit section; and a PWM control section generating a PWM control signal on the basis of a first detection voltage from the voltage detection section, a second detection voltage obtained by detecting current flowing through the LED array, and a third detection voltage obtained by detecting a current waveform flowing through an internal switch of the n-th DC/DC converter, and supplying the PWM control signal to each of the first through n-th DC/DC converters.

Abstract translation: 提供了多级电源。 根据本发明的一个方面的多级电源可以包括：电压转换器电路部分，包括串联连接在输入端子和输出端子之间的多个第一至第n个DC / DC转换器，以便提供 向其中具有多个LED的LED阵列的DC驱动电压; 检测来自所述电压转换电路部的输出电压的电压检测部; 以及PWM控制部，其基于来自电压检测部的第一检测电压生成PWM控制信号，通过检测流过LED阵列的电流而获得的第二检测电压，以及通过检测流过的电流波形而获得的第三检测电压 通过第n个DC / DC转换器的内部开关，并将PWM控制信号提供给第一至第n个DC / DC转换器。