白小姐四肖必选一肖

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0805蓝光LED封装的取光效率分析


    来源:新世纪LED论坛 时间:2014-09-24  【字体:  

    白小姐四肖必选一肖   0805LANGUANG,CHANGGUIYIBANSHIZHIJIASHI,CAIYONGHUANYANGSHUZHIFENGZHUANG,GONGLVJIAOXIAO,ZHENGTIFAGUANGGUANGTONGLIANGBUDA,LIANGDUGAODEYEZHINENGZUOWEIYIXIETESHUSHIYONG。SUIZHEJISHUHEFENGZHUANGJISHUDEFAZHAN,SHUNYINGZHAOMINGLINGYUDUIGAOGUANGTONGLIANG LEDCHANPINDEXUQIU,GONGLVXINGLEDZHUBUZOURUSHICHANG。ZHEIZHONGGONGLVXINGDELEDYIBANSHIJIANGFAGUANGXINPIANFANGZAISANRERECHENSHANG,SHANGMIANZHUANGPEIGUANGXUETOUJINGYIDADAOYIDINGGUANGXUEKONGJIANFENBU,TOUJINGNEIBUTIANCHONGDIYINGLIROUXINGGUIJIAO。

    白小姐四肖必选一肖   GONGLVXINGLEDYAOZHENZHENGJINRUZHAOMINGLINGYU,SHIXIANJIATINGRICHANGZHAOMING,QIYAOJIEJUEDEWENTIHAIYOUHENDUO,QIZHONGZUIZHONGYAODEBIANSHIFAGUANGXIAOLV。MUQIANSHICHANGSHANGGONGLVXINGLEDBAODAODEZUIGAOLIU MINGXIAOLVZAI50lm/WZUOYOU,HAIYUANDABUDAOJIATINGRICHANGZHAOMINGDEYAOQIU。WEILETIGAOGONGLVXINGLEDFAGUANGXIAOLV,YIFANGMIANQIFAGUANGXINPIANDEXIAOLVYOUDAITIGAO;LINGYIFANGMIAN,GONGLVXINGLEDDEFENG ZHUANGJISHUYEXUJINYIBUTIGAO,CONGJIEGOUSHEJI、CAILIAOJISHUJIGONGYIJISHUDENGDUOFANGMIANRUSHOU,TIGAOCHANPINDEFENGZHUANGQUGUANGXIAOLV。

      一、影响取光效率的封装要素

      1.散热技术

      DUIYUYOUPNJIEZUCHENGDEFAGUANGERJIGUAN,DANGZHENGXIANGDIANLIUCONGPNJIELIUGUOSHI,PNJIEYOUFARESUNHAO,ZHEIXIERELIANGJINGYOUZHANJIEJIAO、GUANFENGCAILIAO、RECHENDENG,FUSHEDAOKONGQIZHONG,ZAIZHEIGEGUO CHENGZHONGMEIYIBUFENCAILIAODOUYOUZUZHIRELIUDEREZUKANG,YEJIUSHIREZU,REZUSHIYOUQIJIANDECHICUN、JIEGOUJICAILIAOSUOJUEDINGDEGUDINGZHI。SHEFAGUANGERJIGUANDEREZUWEIRth(℃/W),REHAOSANGONGLV WEIPD(W),CISHIYOUYUDIANLIUDERESUNHAOERYINQIDEPNJIEWENDUSHANGSHENGWEI:

      T(℃)=Rth×PD。

      PN结结温为:

      TJ=TA+ Rth×PD

      QIZHONGTAWEIHUANJINGWENDU。YOUYUJIEWENDESHANGSHENGHUISHIPNJIEFAGUANGFUHEDEJILVXIAJIANG,FAGUANGERJIGUANDELIANGDUJIUHUIXIAJIANG。TONGSHI,YOUYURESUNHAOYINQIDEWENSHENGZENGGAO,FAGUANGERJIGUANLIANG DUJIANGBUZAIJIXUSUIZHEDIANLIUCHENGBILITIGAO,JIXIANSHICHUREBAOHEXIANXIANG。LINGWAI,SUIZHEJIEWENDESHANGSHENG,FAGUANGDEFENGZHIBOZHANGYEJIANGXIANGZHANGBOFANGXIANGPIAOYI,YUE0.2-0.3nm/℃,ZHEIDUIYUTONGGUO YOULANGUANGXINPIANTUFUYAGHUNHEDEDAODEBAISELEDLAISHUO,LANGUANGBOZHANGDEPIAOYI,HUIYINQIYUYINGGUANGFENJIFABOZHANGDESHIPEI,CONGERJIANGDIDEZHENGTIFAGUANGXIAOLV,BINGDAOZHIBAIGUANGSE WENDEGAIBIAN。

      DUIYUGONGLVFAGUANGERJIGUANLAISHUO,QUDONGDIANLIUYIBANDOUWEIJIBAIHAOANYISHANG,PNJIEDEDIANLIUMIDUFEICHANGDA,SUOYIPNJIEDEWENSHENGFEICHANGMINGXIAN。DUIYUFENGZHUANGHEYINGYONGLAISHUO,RUHEJIANGDICHAN PINDEREZU,SHIPNJIECHANSHENGDERELIANGNENGJINKUAIDESANFACHUQU,BUJINKETIGAOCHANPINDEBAOHEDIANLIU,TIGAOCHANPINDEFAGUANGXIAOLV,TONGSHIYETIGAOLECHANPINDEKEKAOXINGHESHOUMING。WEILEJIANGDICHANPINDEREZU, SHOUXIANFENGZHUANGCAILIAODEXUANZEXIANDEYOUWEIZHONGYAO,BAOKUORECHEN、ZHANJIEJIAODENG,GECAILIAODEREZUYAODI,JIYAOQIUDAOREXINGNENGLIANGHAO。QICIJIEGOUSHEJIYAOHELI,GECAILIAOJIANDEDAOREXINGNENGLIANXUPIPEI,CAILIAOZHI JIANDEDAORELIANJIELIANGHAO,BIMIANZAIDAORETONGDAOZHONGCHANSHENGSANREPINGJING,QUEBAORELIANGCONGNEIDAOWAICENGCENGSANFA。TONGSHI,YAOCONGGONGYISHANGQUEBAO,RELIANGANZHAOYUXIANSHEJIDESANRETONGDAOJISHIDESANFACHUQU。

      2.填充胶的选择

      根据折射定律,光线从光密介质入射到光疏介质时,当入射角达到一定值,即大于等于临界角时,会发生全发射。以GaN蓝色芯片来说,GaN材料的折射率是2.3,当光线从晶体内部射向空气时,根据折射定律,临界角θ0=sin-1(n2/n1)。

    白小姐四肖必选一肖   QIZHONGn2DENGYU1,JIKONGQIDEZHESHELV,n1SHIGaNDEZHESHELV,YOUCIJISUANDEDAOLINJIEJIAOθ0YUEWEI25.8DU。ZAIZHEIZHONGQINGKUANGXIA,NENGSHECHUDEGUANGZHIYOURU SHEJIAO≤25.8DUZHEIGEKONGJIANLITIJIAONEIDEGUANG,JUBAODAO,MUQIANGaNXINPIANDEWAILIANGZIXIAOLVZAI30%-40%ZUOYOU,YINCI,YOUYUXINPIANJINGTIDENEIBUXISHOU,NENGSHECHUDAOJINGTIWAI MIANGUANGXIANDEBILIHENSHAO。JUBAODAO,MUQIANGaNXINPIANDEWAILIANGZIXIAOLVZAI30%-40%ZUOYOU。TONGYANG,XINPIANFACHUDEGUANGYAOTOUGUOFENGZHUANGCAILIAO,CHUANSONGDAOKONGJIAN,YEYAOKAOLVCAILIAODUIQUGUANGXIAOLVDE YINGXIANG。

      SUOYI,WEILETIGAOLEDCHANPINFENGZHUANGDEQUGUANGXIAOLV,BIXUTIGAOn2DEZHI,JITIGAOFENGZHUANGCAILIAODEZHESHELV,YITIGAOCHANPINDELINJIEJIAO,CONGERTIGAOCHANPINDEFENGZHUANGFAGUANGXIAOLV。TONG SHI,FENGZHUANGCAILIAODUIGUANGXIANDEXISHOUYAOXIAO。WEILETIGAOCHUSHEGUANGDEBILI,FENGZHUANGDEWAIXINGZUIHAOSHIGONGXINGHUOBANQIUXING,ZHEIYANG,GUANGXIANCONGFENGZHUANGCAILIAOSHEXIANGKONGQISHI,JIHUSHICHUIZHISHEDAOJIEMIAN,YINERBUZAICHAN SHENGQUANFANSHE。

      3.反射处理

    白小姐四肖必选一肖   FANSHECHULIZHUYAOYOULIANGFANGMIAN,YISHIXINPIANNEIBUDEFANSHECHULI,ERSHIFENGZHUANGCAILIAODUIGUANGDEFANSHE,TONGGUONEI、WAILIANGFANGMIANDEFANSHECHULI,LAITIGAOCONGXINPIANNEIBUSHECHUDEGUANGTONGBILI,JIANSHAO XINPIANNEIBUXISHOU,TICHENGPINDEFAGUANGXIAOLV。CONGFENGZHUANGLAISHUO,GONGLVXINGLEDTONGCHANGSHIJIANGGONGLVXINGXINPIANZHUANGPEIZAIDAIFANSHEQIANGDEJINSHUZHIJIAHUOJIBANSHANG,ZHIJIASHIDEFANSHEQIANGYIBANSHICAIQU DIANDUFANGSHITIGAOFANSHEXIAOGUO,ERJIBANSHIDEFANSHEQIANGYIBANSHICAIYONGPAOGUANGFANGSHI,YOUTIAOJIANDEHAIHUIJINXINGDIANDUCHULI,DANYISHANGLIANGZHONGCHULIFANGSHISHOUMOJUJINGDUJIGONGYIYINGXIANG,CHULIHOUDEFANSHEQIANGYOUYIDING DEFANSHEXIAOGUO,DANBINGBULIXIANG。MUQIANGUONEIZHIZUOJIBANSHIDEFANSHEQIANG,YOUYUPAOGUANGJINGDUBUZUHUOJINSHUDUCENGDEYANGHUA,FANSHEXIAOGUOJIAOCHA,ZHEIYANGDAOZHIHENDUOGUANGXIANZAISHEDAOFANSHEQUHOUBEIXISHOU,WUFAAN YUQIDEMUBIAOFANSHEZHICHUGUANGMIAN,CONGERDAOZHIZUIZHONGFENGZHUANGHOUDEQUGUANGXIAOLVPIANDI。

    白小姐四肖必选一肖   WOMENJINGGUODUOFANGMIANDEYANJIUHESHIYAN,YANZHICHENGYIZHONGJUYOUZIZHUZHISHICHANQUANDESHIYONGYOUJICAILIAOTUCENGDEFANSHECHULIGONGYI,TONGGUOZHEIZHONGGONGYICHULI,SHIDEFANSHEDAOZAIPIANQIANGNEIDEGUANGXIANXISHOU HENSHAO,NENGJIANGDABUFENSHEDAOQISHANGMIANDEGUANGXIANFANSHEZHICHUGUANGMIAN。ZHEIYANGCHULIHOUDECHANPINQUGUANGXIAOLVYUCHULIZHIQIANXIANGBIKETIGAO30%-50%。WOMENMUQIAN1WBAIGUANGGONGLVLEDDEGUANGXIAOKEDA 40-50lm/W(ZAIYUANFANGPMS-50GUANGPUFENXICESHIYIQISHANGCESHIJIEGUO),HUODELEHENHAODEFENGZHUANGXIAOGUO。

      4.荧光粉选择与涂覆

      DUIYUBAISEGONGLVXINGLEDLAISHUO,FAGUANGXIAOLVDETIGAOHAIYUYINGGUANGFENDEXUANZEHEGONGYICHULIYOUGUAN。WEILETIGAOYINGGUANGFENJIFALANSEXINPIANDEXIAOLV,SHOUXIANYINGGUANGFENDEXUANZEYAOHESHI,BAOKUO JIFABOZHANG、KELIDUDAXIAO、JIFAXIAOLVDENG,XUQUANMIANKAOHE,JIANGUGEGEXINGNENG。QICI,YINGGUANGFENDETUFUYAOJUNYUN,ZUIHAOSHIXIANGDUIFAGUANGXINPIANGEGEFAGUANGMIANDEJIAOCENGHOUDUJUNYUN,YIMIANYINHOUDUBUJUN ZAOCHENGJUBUGUANGXIANWUFASHECHU,TONGSHIYEKEGAISHANGUANGBANDEZHILIANG。

      二、结论

    白小姐四肖必选一肖   LIANGHAODESANRESHEJIDUITIGAOGONGLVXINGLEDCHANPINFAGUANGXIAOLVYOUZHEXIANZHEDEZUOYONG,TONGSHIYESHIQUEBAOCHANPINSHOUMINGHEKEKAOXINGDEQIANTI。ERSHEJILIANGHAODECHUGUANGTONGDAO,ZHEILI ZHEZHONGZHIFANSHEQIANG、TIANCHONGJIAODENGDEJIEGOUSHEJI、CAILIAOXUANZEHEGONGYICHULI,KEYIYOUXIAOTIGAOGONGLVXINGLEDDEQUGUANGXIAOLV。DUIGONGLVXINGBAIGUANGLEDLAISHUO,YINGGUANGFENDEXUANZEHEGONGYISHEJI,DUIGUANGBAN DEGAISHANHEFAGUANGXIAOLVDETIGAOYEZHIGUANZHONGYAO。

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