公开(公告)号：US20120299497A1

公开(公告)日：2012-11-29

申请号：US13223933

申请日：2011-09-01

申请人： Yeun Joong LEE ,  Deuk Hee Park ,  Sang Hyun Cha ,  Jae Shin Lee ,  Change Seok Lee

发明人： Yeun Joong LEE ,  Deuk Hee Park ,  Sang Hyun Cha ,  Jae Shin Lee ,  Change Seok Lee

IPC分类号： H05B37/02

CPC分类号： H05B33/0809 ,  H05B33/0806 ,  Y02B20/348

摘要： There is provided an LED circuit including a light emitting unit including a plurality of light emitting diodes; and a switching unit switching to apply only positive voltage of an AC power supply to an anode of the light emitting unit. Through this, the LED circuit can reduce complexity of a driving circuit. Further, lifespan and efficiency of the LED circuit may be improved since an electrolytic capacitor and a bridge circuit are not used. Further, any one light emitting diode may be prevented from determining the lifespan of all of the light emitting diodes since all of the light emitting diodes are driven at all times, thereby improving the lifespan of the light emitting diode.

摘要翻译： 提供了一种LED电路，包括包括多个发光二极管的发光单元; 以及切换单元，其仅将交流电源的正电压施加到所述发光单元的阳极。 通过这种方式，LED电路可以降低驱动电路的复杂性。 此外，由于不使用电解电容器和桥式电路，因此可以提高LED电路的寿命和效率。 此外，由于所有发光二极管始终被驱动，因此可以防止任何一个发光二极管确定所有发光二极管的寿命，从而提高发光二极管的寿命。

公开(公告)号：US08890431B2

公开(公告)日：2014-11-18

申请号：US13220041

申请日：2011-08-29

申请人： Change Seok Lee ,  Yeun Joong Lee ,  Deuk Hee Park ,  Sang Hyun Cha ,  Jae Shin Lee

发明人： Change Seok Lee ,  Yeun Joong Lee ,  Deuk Hee Park ,  Sang Hyun Cha ,  Jae Shin Lee

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B33/0815

摘要： There are provided an LED driving apparatus and an LED driving method thereof. The LED driving apparatus includes: a light emitting unit including one or more LEDs, a rectifying unit rectifying an input signal to generate a first signal; a signal conversion unit inverting a waveform of a first signal to generate a second signal; and an operation unit arithmetically operating the first and second signals. A plurality of AC signals each having a different waveform are arithmetically operated to generate a signal having a small amount of a ripple component, and an LED is driven by the signal, thus preventing a lifespan of the LED from being shortened by omitting a smoothing electrolytic capacitor, one of main causes shortening the lifespan of an LED driving circuit.

摘要翻译： 提供了LED驱动装置及其LED驱动方法。 LED驱动装置包括：发光单元，包括一个或多个LED;整流单元对输入信号进行整流以产生第一信号; 信号转换单元，反转第一信号的波形以产生第二信号; 以及操作单元，算术地操作第一和第二信号。 每个具有不同波形的多个AC信号被算术运算以产生具有少量纹波分量的信号，并且由信号驱动LED，从而通过省略平滑电解而防止LED的寿命缩短 电容器，主要原因之一是缩短了LED驱动电路的使用寿命。

公开(公告)号：US08796942B2

公开(公告)日：2014-08-05

申请号：US13223933

申请日：2011-09-01

申请人： Yeun Joong Lee ,  Deuk Hee Park ,  Sang Hyun Cha ,  Jae Shin Lee ,  Change Seok Lee

发明人： Yeun Joong Lee ,  Deuk Hee Park ,  Sang Hyun Cha ,  Jae Shin Lee ,  Change Seok Lee

IPC分类号： H05B37/02

CPC分类号： H05B33/0809 ,  H05B33/0806 ,  Y02B20/348

摘要： There is provided an LED circuit including a light emitting unit including a plurality of light emitting diodes; and a switching unit switching to apply only positive voltage of an AC power supply to an anode of the light emitting unit. Through this, the LED circuit can reduce complexity of a driving circuit. Further, lifespan and efficiency of the LED circuit may be improved since an electrolytic capacitor and a bridge circuit are not used. Further, any one light emitting diode may be prevented from determining the lifespan of all of the light emitting diodes since all of the light emitting diodes are driven at all times, thereby improving the lifespan of the light emitting diode.

摘要翻译： 提供了一种LED电路，包括包括多个发光二极管的发光单元; 以及切换单元，其仅将交流电源的正电压施加到所述发光单元的阳极。 通过这种方式，LED电路可以降低驱动电路的复杂性。 此外，由于不使用电解电容器和桥式电路，因此可以提高LED电路的寿命和效率。 此外，由于所有发光二极管始终被驱动，因此可以防止任何一个发光二极管确定所有发光二极管的寿命，从而提高发光二极管的寿命。

公开(公告)号：US08749147B2

公开(公告)日：2014-06-10

申请号：US13224083

申请日：2011-09-01

申请人： Yeun Joong Lee ,  Deuk Hee Park ,  Sang Hyun Cha ,  Jae Shin Lee ,  Change Seok Lee

发明人： Yeun Joong Lee ,  Deuk Hee Park ,  Sang Hyun Cha ,  Jae Shin Lee ,  Change Seok Lee

IPC分类号： H05B37/00 ,  H05B37/02

CPC分类号： H05B33/0809 ,  H05B33/0824

摘要： There is provided an LED circuit. The LED circuit may include 2N+2 light emitting units connected between a 2K−1-th node and a 2K-th node among 4N+4 (N is a natural number) nodes including a first node supplied with input voltage (K is all natural numbers equal to or smaller than 2N+2); 2N+2 switches connected between a 2K-th node and a ground (K is all natural numbers equal to or smaller than 2N+2); 2N+1 switches connected between a 2L−1-th node and a 2L+1-th node and 2N+1 switches connected between a 2L-th node and a 2L+1-th node (L is all natural numbers equal to or smaller than 2N+1); and N switches connected between the first node and a 4M+1-th node (M is all natural numbers equal to or smaller than N).

摘要翻译： 提供了一个LED电路。 LED电路可以包括连接在4N + 4（N是自然数）节点之间的第2K-1节点和第2K节点之间的2N + 2个发光单元，包括提供有输入电压的第一节点（K全为 等于或小于2N + 2的自然数）; 连接在第2K节点和地之间的2N + 2个开关（K是等于或小于2N + 2的自然数）; 连接在第2L-1节点和第2L + 1节点之间的2N + 1个开关和连接在第2L节点和第2L + 1节点之间的2N + 1个开关（L等于或等于 小于2N + 1）; 和连接在第一节点与第4M + 1节点之间的N个交换机（M等于或小于N的自然数）。

公开(公告)号：US20120299490A1

公开(公告)日：2012-11-29

申请号：US13224083

申请日：2011-09-01

申请人： Yeun Joong LEE ,  Deuk Hee Park ,  Sang Hyun Cha ,  Jae Shin Lee ,  Change Seok Lee

发明人： Yeun Joong LEE ,  Deuk Hee Park ,  Sang Hyun Cha ,  Jae Shin Lee ,  Change Seok Lee

IPC分类号： H05B37/02

CPC分类号： H05B33/0809 ,  H05B33/0824

摘要： There is provided an LED circuit. The LED circuit may include 2N+2 light emitting units connected between a 2K−1-th node and a 2K-th node among 4N+4 (N is a natural number) nodes including a first node supplied with input voltage (K is all natural numbers equal to or smaller than 2N+2); 2N+2 switches connected between a 2K-th node and a ground (K is all natural numbers equal to or smaller than 2N+2); 2N+1 switches connected between a 2L−1-th node and a 2L+1-th node and 2N+1 switches connected between a 2L-th node and a 2L+1-th node (L is all natural numbers equal to or smaller than 2N+1); and N switches connected between the first node and a 4M+1-th node (M is all natural numbers equal to or smaller than N).

摘要翻译： 提供了一个LED电路。 LED电路可以包括连接在4N + 4（N是自然数）节点之间的第2K-1节点和第2K节点之间的2N + 2个发光单元，包括提供有输入电压的第一节点（K全为 等于或小于2N + 2的自然数）; 连接在第2K节点和地之间的2N + 2个开关（K是等于或小于2N + 2的自然数）; 连接在第2L-1节点和第2L + 1节点之间的2N + 1个开关和连接在第2L节点和第2L + 1节点之间的2N + 1个开关（L等于或等于 小于2N + 1）; 和连接在第一节点与第4M + 1节点之间的N个交换机（M等于或小于N的自然数）。