LED背光技术的发展与挑战

1、12outline 1.led to ccfl replacementnled backlight benefits analysisnccfl/led market share trend2.small & middle size driving topologynled notebook/netbooknled monitornlow-end display3.led tv driving topology4.ob led driver roadmap 5.q&a3tv products innovations led backlight is very hot4led t

2、ype white lightcurrent capabilityn standard led - drive current 110%)n light weight and thin profile6power saving of led blu n low drive voltage to ensure safety operationn the relationship between led intensity and drive current is linern lower current is operated to perform the same brightness lev

3、el that ccfl modulen power saving of 3050% of ccfl power consumption7local dimming of tv led blu 8ntsc cover ccfl 78%, wled 80%, rgb led 110%)wide color gamut 9 nb pc lcd mnt lcd tv power saving light weight thin profile small cost premium none power saving dynamic blu control cost reliability huge

4、led amount thermal compensation power saving thin profile cost input/output interfaceled blu market potential highlow10led blu market share 2008200920102011share rate (nb)21.90%66.70%89.40%95.20%share rate (mnt)0.30%1.90%18.90%35.10%share rate (tv)0.30%2.68%21.26%45.29%n samsung mp led tv at 2009, q

5、2kick off led tv marketn low cost edge type become main stream help to rise the share rate from ccfln power saving features easy to meet epa5.0n will break 50% share 2012source: display search11led driving topology-nb 12led driving topology-mnt parallel connection to support larger current applicati

6、on13led driving topology-low end display 14led vs. ccfl cost comparison q3, 2010$usdpremium 28%premium 41%premium 61%premium 43%15led tv market share growth source: display search16led backlight for large size tv panel direct type with local dimmingdirect type without local dimmingedge type backligh

7、thigh performance slim profilergb led / white led white led n rgb & local dimming has power saving and high-cr feature high-end usen edge type solution has low cost feature main streamdirect backlight:better emissionallowing independently dimming block by blockedge backlight:allowing slim design

8、fewer led number and lower cost17led tv cost down trend direct typeedge typeadvanced edge typeadvanced edge type2008200920102011structuredirect typeedge typeedge typeedge type#led96057640017640 inch led tv18led tv driving topology 19led tv power optimize current solutionoptimized solutionreduce dc/dc booster（cost）efficiency improvement20on-bright led tv total solution 21作者简介：作者简介： 张昌山先生毕业于西南交通大学张昌山先生毕业于西南交通大学电子工程系，长期以来一直致力于背光电子工程系，长期以来一直致力于背光驱动市场的产品规划及技术研究，张先驱动市场的产品规划及技术研究，张先生于生于2005年正式加入昂宝电子（上海）年正式加入昂宝电子（上海）有限公司，期间一直担任系统部总监，有限公司，期间一直担任系统部总监，全权负责公司电管理芯片之应用团队及全权负责公司电