发明名称 |
LED driving apparatus and method |
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. |
申请公布号 |
US8890431(B2) |
申请公布日期 |
2014.11.18 |
申请号 |
US201113220041 |
申请日期 |
2011.08.29 |
申请人 |
Samsung Electro-Mechanics Co., Ltd. |
发明人 |
Lee Change Seok;Lee Yeun Joong;Park Deuk Hee;Cha Sang Hyun;Lee Jae Shin |
分类号 |
H05B37/02;H05B33/08 |
主分类号 |
H05B37/02 |
代理机构 |
McDermott Will & Emery LLP |
代理人 |
McDermott Will & Emery LLP |
主权项 |
1. An LED driving apparatus comprising:
a rectifying unit rectifying an input signal to generate a first signal; a signal conversion unit inverting the first signal to generate a second signal; and an operation unit adding the first and second signals to generate a smoothed driving signal. |
地址 |
Suwon, Gyunggi-Do KR |