1On-Bright confidentialOn-Bright confidentialLED BLUDriving and Challenge 牵瞧荒适惫缉今联扳磨狙淆邵隶憋犊稠潞依娄迹凡甘泳愚服静功官芜折莱LED背光技术的发展与挑战LED背光技术的发展与挑战2On-Bright confidentialOn-Bright confidentialOutline 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&A除孜蜡贯顾屠节纬同赌砂主桥惫请粹三撤撩藻姥熙迈哇颜灶隶气皑眨袋词LED背光技术的发展与挑战LED背光技术的发展与挑战3On-Bright confidentialOn-Bright confidentialTV Products Innovations Internet Internet ConnectivityConnectivity3D3DDisplayDisplayHumanHumanInterfaceInterfaceLEDLEDBacklightBacklightTV Products InnovationsTV Products InnovationsLED backlight is very hot陌层康蠕爵咐迹予拾匹曲腾怠杉但侥表粱贺港董书该尔恰郊站菊率颇强枪LED背光技术的发展与挑战LED背光技术的发展与挑战4On-Bright confidentialOn-Bright confidentialLED Type White LightCurrent Capabilityn Standard LED - drive current 110%)n Light weight and thin profile批叙沾颖拘弄岂雅任拴挺掷产团猩琢别论霄挫移矽辆蛔殃绚噬掏滋牺孪均LED背光技术的发展与挑战LED背光技术的发展与挑战6On-Bright confidentialOn-Bright confidentialPower 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 level that CCFL modulen Power saving of 3050% of CCFL power consumption思窗靴裁武经界窥豆案曙胰茁赔芽非枷斜猖有讨弧琴桅扮乾咙鲤拎短穆氖LED背光技术的发展与挑战LED背光技术的发展与挑战7On-Bright confidentialOn-Bright confidentialLocal Dimming of TV LED BLU 研酮膜眉姜缚烁谩杉伟镊泳陀嗓龄鼻腔敦巳林惜舅曳揭束威呻霄热军克亿LED背光技术的发展与挑战LED背光技术的发展与挑战8On-Bright confidentialOn-Bright confidentialNTSC cover CCFL 78%, WLED 80%, RGB LED 110%)Wide Color Gamut 爪鬼称案俗犹咏慨燥嫉述柜纯罢百迂惧铝秤沧矣窍掳舵崎咋往桐信绥渴供LED背光技术的发展与挑战LED背光技术的发展与挑战9On-Bright confidentialOn-Bright confidential NB PC LCD MNT LCD TV Power Saving Light weight Thin profile Small cost premium None Power Saving Dynamic BLU control Cost Reliability Huge LED Amount Thermal compensation Power Saving Thin profile Cost Input/output interfaceAdvantageAdvantageChallengeChallengeLED BLU Market Potential ApplicationApplicationHighLow剑搪乓文杆汁困锣嗜溃医褐怜姑留人烤迫访尘嫌取橙涅裙锯譬皮袭漳慌挚LED背光技术的发展与挑战LED背光技术的发展与挑战10On-Bright confidentialOn-Bright confidentialLED 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, Q2Kick 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 Search篷幌琴魔著铀圾篱燕谁夕伶买鸯邦憋破孤尺峻煤饥瘤貉彪碰墒梦涝卞毋碑LED背光技术的发展与挑战LED背光技术的发展与挑战11On-Bright confidentialOn-Bright confidentialLED Driving Topology-NB 15” panel for example15” panel for example6 strings, 10 LED per string 20mA6 strings, 10 LED per string 20mAVout 33V, Pout 4WVout 33V, Pout 4WOB3360 FeaturesOB3360 FeaturesBuild-in 60V MOSFETBuild-in 60V MOSFET8 string output8 string outputWith 60mA current capability per stringWith 60mA current capability per string160K/320K/620K/1.2MHz frequency160K/320K/620K/1.2MHz frequency0100% wide range dimming0100% wide range dimming3% channel to channel current matching3% channel to channel current matching鹰吁苔吮尖尚腿荚染味画帆早找溶龟贡茨奥悬疵蛆旋汀剐此枕议央柞蛋凄LED背光技术的发展与挑战LED背光技术的发展与挑战12On-Bright confidentialOn-Bright confidentialLED Driving Topology-MNT 24” panel for example (1)24” panel for example (1)12 strings, 15 LED per string 20mA12 strings, 15 LED per string 20mAVout 50V, Pout 12WVout 50V, Pout 12WOB3362 FeaturesOB3362 Features12 string output12 string outputWith 60mA current capability per stringWith 60mA current capability per string150500kHz frequency150500kHz frequency0100% wide range dimming0100% wide range dimming3% channel to channel current matching3% channel to channel current matching24” panel for example (2)24” panel for example (2)12 strings, 15 LED per string 20mA12 strings, 15 LED per string 20mAVout 33V, Pout 4WVout 33V, Pout 4Wparallel connection to support larger current application吗赫鉴殴碾戴鸥鉴镑猾拈亚剂诺掘淫绪名滩探竹之所关忙沾沂垛膀国谰虞LED背光技术的发展与挑战LED背光技术的发展与挑战13On-Bright confidentialOn-Bright confidentialLED Driving Topology-Low End Display OB337XOB337X0.2V reference benefits efficiency0.2V reference benefits efficiencyInternal burst and external PWM dimmingInternal burst and external PWM dimmingOutput over voltage protectionOutput over voltage protectionOB3372OB3372:Boost,DIP8, built in 60V MOSFET:Boost,DIP8, built in 60V MOSFETOB3370NOB3370N:Boost, SOP8, Controller:Boost, SOP8, ControllerOB3370POB3370P:Buck, SOP8, Controller :Buck, SOP8, Controller 26” panel for example (2)26” panel for example (2)Single string, 400mASingle string, 400mAVout 40V, Pout 16WVout 40V, Pout 16W詹蹿狭割庚颠锈棠殆徒赞裁侮逐甄赞志秆眼挟熏罪幌咏凋烟琴碳存隐磕油LED背光技术的发展与挑战LED背光技术的发展与挑战14On-Bright confidentialOn-Bright confidentialLED vs. CCFL Cost Comparison Q3, 2010$USDpremium 28%premium 41%premium 61%premium 43%闰咋豫硷裕帛夫栗龋憾朱咬屡址咐膜姆急聪联允窿萌强汤闰项熟榜茄厂茸LED背光技术的发展与挑战LED背光技术的发展与挑战15On-Bright confidentialOn-Bright confidentialLED TV Market Share Growth Source: Display Search旋瓢亢靡溢卧敞膏惶帘胎鲜寨咳露掉趣栋咎破持银保帕捣焕罢顷番沟缨槽LED背光技术的发展与挑战LED背光技术的发展与挑战16On-Bright confidentialOn-Bright confidentialLED Backlight for Large Size TV Panel Direct type with Local dimmingDirect type without Local dimmingEdge type backlightHigh 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 designFewer LED number and lower cost诚绦贸畔簇蚂什埠赃栓邮猜趋开雾瓮剐徐夏轩铰浸调萨守充穗禽谅灾惺徒LED背光技术的发展与挑战LED背光技术的发展与挑战17On-Bright confidentialOn-Bright confidentialLED TV Cost Down Trend Direct typeEdge typeAdvanced edge typeAdvanced edge type2008200920102011structureDirect typeEdge typeEdge typeEdge type#LED96057640017640 inch LED TV堤擞慨涵窑痉沮啡搐挚缸缉棕深昏笼狠楼卖铜甲切口牟嚣裕酋林顿砰纳雪LED背光技术的发展与挑战LED背光技术的发展与挑战18On-Bright confidentialOn-Bright confidentialLED TV Driving Topology OB3376OB3376Dual channel boost controllerDual channel boost controller150/300kHz switching frequency150/300kHz switching frequencyMulti chip sync.Multi chip sync.Cost effectiveCost effective42” panel for example42” panel for example4 strings4 strings150mA per string150mA per stringVout 150V, Pout 90WVout 150V, Pout 90W膜声哦犀潜佳矿扦宪鹏洼贯蒲斗峪梆叙檬限衔盼慧寞拉徽淌佩羊喧荆舱馆LED背光技术的发展与挑战LED背光技术的发展与挑战19On-Bright confidentialOn-Bright confidentialLED TV Power Optimize Current SolutionOptimized SolutionReduce DC/DC Booster（Cost）Efficiency improvement让奏淡值伙拜诅膛此擦哑柯铬玉近审拖印申陛走顽与锹赢搔鞠捍舟姆公揖LED背光技术的发展与挑战LED背光技术的发展与挑战20On-Bright confidentialOn-Bright confidentialHeadroom voltage Headroom voltage feedback for efficiency and feedback for efficiency and thermal improvementthermal improvementOn-Bright LED TV Total Solution 府晕糟卫狼经瘦萌家执街姆贯薄混莉亚沛营卤烤牲惮爬胆浙颠踪舌沟疏操LED背光技术的发展与挑战LED背光技术的发展与挑战21On-Bright confidentialOn-Bright confidential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管理芯片之应用团队及管理。管理。 张昌山先生在相关领域拥有丰富张昌山先生在相关领域拥有丰富的实际应用经验，在的实际应用经验，在LED照明驱动、背照明驱动、背光驱动均有自己独到的见解，张先生在光驱动均有自己独到的见解，张先生在该领域还拥有多项国内外专利。该领域还拥有多项国内外专利。淄脊虫糯搽小沼船点页意桶厉创曳嫩氦周谢骨佩衫妖酞片阐择图苇驯衫筋LED背光技术的发展与挑战LED背光技术的发展与挑战