发明授权
- 专利标题: LED driving device
- 专利标题(中): LED驱动装置
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申请号: US13109535申请日: 2011-05-17
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公开(公告)号: US08541953B2公开(公告)日: 2013-09-24
- 发明人: Bo Hyun Hwang , Jung Sun Kwon , Jung Hyun Kim , Seung Kon Kong , Jae Shin Lee , Joon Youp Sung
- 申请人: Bo Hyun Hwang , Jung Sun Kwon , Jung Hyun Kim , Seung Kon Kong , Jae Shin Lee , Joon Youp Sung
- 申请人地址: KR Gyunggi-Do
- 专利权人: Samsung Electro-Mechanics Co., Ltd.
- 当前专利权人: Samsung Electro-Mechanics Co., Ltd.
- 当前专利权人地址: KR Gyunggi-Do
- 代理机构: McDermott Will & Emery LLP
- 优先权: KR10-2011-0015106 20110221
- 主分类号: H05B37/02
- IPC分类号: H05B37/02
摘要:
Disclosed herein is a light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array for each channel, the LED driving device including: a constant current driver driving currents flowing in each channel; a first switching unit selectively feeding-back voltage levels of each channel; and a switching controller controlling the turn on/off of the first switching unit, wherein matching characteristics of currents flowing in each channel is improved and a size of an integrated circuit (IC) chip is also reduced as compared to a case according to the related art, thereby making it possible to reduce a production cost and satisfy the trend of miniaturization of the chip, while solving a performance deterioration problem due to degradation of the matching of the currents between the channels.
公开/授权文献
- US20120212146A1 LED DRIVING DEVICE 公开/授权日:2012-08-23