《国际电子商情》数字版2010年7月刊 - (Page 14)

市场观察边缘背光LED TV是当前量产主流，CCFL背光TV将消失 » 上接12页一个高压二极管、一个大电感 (8.2mH@220mA)和一个用于调光的外部N沟道FET组成，但MP4600不仅集成了开关FET，而且开关频率可高达1MHz以上，这使得它的外部组件只需一个小电感(75µH@320mA)、一个低压肖特基二极管和一个用于调光的外部N沟道FET，成本和尺寸都可大幅降低。尽管直接矩阵式LED背光架构能够实现根据屏幕显示图像来调节每个局部区块的背光强度，这不仅可使得 LED TV更省电，而且可使得实际显示的图像更具真实感，但之所以目前只有少数高端大尺寸LED TV在使用这一背光架构，是因为该架构需要将多串LED进行并联，而由于即便同一条生产线上出来的LED均匀性和可靠性也是各不相同，因此相同个数的LED 串的电压常常并不相同，再加上实际工作时出现的LED开路或短路问题，每串上的电压降是不同的，此时如何防止每串LED之间的干扰，继续保持每串LED上的电流精度，便成为一个很大的问题。 Richard K. William坦承：“我们目前的AAT2403/04产品还没有很好地解决这一问题，目前我们正在进行技术攻关，一旦你看到我们的下一代产品出来，那么就意味着我们已解决了这一难题。” 本刊会紧密跟踪业界在这一领域的最新技术进展，敬请读者继续留意我们的后续报道。我也要点评相关阅读 • 中国家电企业已掌握LED背光源核心技术 • 南非世界杯成LCD TV促销契机，国产品牌亏本赚吆喝 • 笔记本：薄型LED背光来势汹汹， CCFL几无立足之地 • 飞兆面向46'LED电视推出整体电源和背光照明解决方案 HALF PAGE AD (horizontal) 215mm x 139mm 14 国际电子商情 | 2010年7月 | www.esmchina.com http://www.esmchina.com/STATIC/SITE/DigitalEdition_201007.HTM#tj http://www.esmchina.com/ART_8800108306_1100_2101_0_0_b9805448.HTM http://www.esmchina.com/ART_8800108291_1100_2101_0_0_177361d9.HTM http://www.esmchina.com/ART_8800108288_1300_2402_3500_0_14e33ca7.HTM http://www.huaconn.cn http://www.huaconn.cn http://www.huaconn.cn http://www.esmchina.com

Table of Contents for the Digital Edition of 《国际电子商情》数字版2010年7月刊

STC MCU Co Ltd
Digi-Key Corporation
STC MCU Co Ltd
STC MCU Co Ltd
STC MCU Co Ltd
Advanced MP HK Ltd
Texas Instruments HK Ltd
DongGuan ShiLong HuaTong Electronic Co Ltd
Analog Devices
SinoHub Inc
Hong Kong Baite (Group) Electronic Co Ltd
Advanced Power Electronics Corp
Micrel Semiconductor
Excel Cell Electronic Co Ltd
Interine Electronics Pan-asia Co Ltd
Interine Electronics Pan-asia Co Ltd
Micon Design Technology Co Ltd
Isabellenhuette Heusler GmbH & Co KG
Cognex Asia Inc Shanghai Rep Office
Hong Kong Trade Development Council
Renesas Electronics HK Ltd
Burnon International Limited
International Rectifier
SyncMOS Technologies Inc
A-Bright Industrial Co Ltd
Shenzhen Secom Telecom Co Ltd
National Semiconductor Hong Kong Ltd
Honestar Technologies Co Ltd
National Semiconductor Hong Kong Ltd
Renesas Electronics
Richardson Electronics
Mouser Electronics
Wuhan P&S Information Technology Co Ltd
ZLG-MCU Development Co Ltd
Shenzhen Hi-Hone Electronics Co Ltd
Shenzhen Mornsun Electronics Co Ltd
BYD Company Limited
Intersil Corporation
OTAX
Conquer Electronics Co Ltd
Fengbao Electronic Technology (Shanghai) Co Ltd
Asiacom Technology (HK) Ltd
DHL
Lampek Enterprise Development (HK) Limited
Xiamen Ningly Electronics Co Ltd
Beijing Rowa Beite Electronic Co Ltd
EnEcomponents.com
Wealth Metal Factory Ltd
China Electronics Appliance Shenzhen Co Ltd
Walter Electronic Co Ltd
Emirates Sky Cargo
CviLux Corporation
Xiamen Letdo Electron Co Ltd
Eyang Technology Development Co Ltd
Fuzetec Technology Co Ltd
Mueller Electric (Shanghai) Ltd
Fuhua Electronic (HK) Co Ltd
Future Technology Electronics Co Ltd
LPKF (Tianjin) Co Ltd
Qualtek Electronics Ltd
Nanjing Shiheng Electronics Co Ltd
Yeebo LCD Ltd
Beijing Times Creation Electronic Co Ltd
Honghu City Languang Electronics Co Ltd
Nanjing AH Electronic Science & Technology Co Ltd
Up Teks Co Ltd
Protronic Asia Limited
Powertronics Co Ltd
Shenzhen Runsheng Electronics Co Ltd
Trantek Electronics Co Ltd
Weltronics Imaging Technology Ltd
BCD Semiconductor Manufacturing Limited
ROHM Co Ltd
Powertek Group Co Limited
Samtec Inc
Innostor Technology Corporation
Tenx Technology Inc
Beijing New Chuang Si Fang Electronic Co Ltd
Shenzhen Jiaweiyi Technology Limited
My Group (Asia) Limited
Shanghai Haier Intergrated Circuit Co Ltd
Sino-Tech International Holdings Ltd
Sino-Tech International Holdings Ltd
Shenzhen Qiankun Industrial & Trading Development Co Ltd

《国际电子商情》数字版2010年7月刊

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