白小组四肖三肖期期中

LED芯片知识问答
2017-05-05 08:57:53

白小组四肖三肖期期中  1、YONGYUBANDAOTIZHAOMINGDEXINPIANJISHUDEFAZHANZHULIUSHISHENME?

  随着半导体LED技术的发展,其在照明领域的应用也越来越多,特别是白光LED的出现,更是成为半导体照明的热点。但是关键的芯片、封装技术还有待提高,在芯片方面要朝大功率、高光效和降低热阻方面发展。提高功率意味着芯片的使用电流加大,最直接的办法是加大芯片尺寸,现在普遍出现的大功率芯片都在1mm×1mm左右,使用电流在350mA.由于使用电流的加大,散热问题成为突出问题,现在通过芯片倒装的方法基本解决了这一文题。随着LED技术的发展,其在照明领域的应用会面临一个前所未有的机遇和挑战。


  2、SHENMESHI“DAOZHUANGXINPIAN(Flip Chip)”?TADEJIEGOURUHE?YOUNAXIEYOUDIAN?

  LANGUANGLEDTONGCHANGCAIYONGAl2O3CHENDI,Al2O3CHENDIYINGDUHENGAO、REDAOLVHEDIANDAOLVDI,RUGUOCAIYONGZHENGZHUANGJIEGOU,YIFANGMIANHUIDAILAIFANGJINGDIANWENTI,LINGYIFANGMIAN,ZAIDADIANLIUQINGKUANGXIASANREYEHUICHENGWEIZUIZHUYAODEWENTI。TONGSHIYOUYUZHENGMIANDIANJICHAOSHANG,HUIZHEDIAOYIBUFENGUANG,FAGUANGXIAOLVHUIJIANGDI。DAGONGLVLANGUANGLEDTONGGUOXINPIANDAOZHUANGJISHUKEYIBICHUANTONGDEFENGZHUANGJISHUDEDAOGENGDUODEYOUXIAOCHUGUANG。


白小组四肖三肖期期中  XIANZAIZHULIUDEDAOZHUANGJIEGOUZUOFASHI:SHOUXIANZHIBEICHUJUYOUSHIHEGONGJINGHANJIEDIANJIDEDACHICUNLANGUANGLEDXINPIAN,TONGSHIZHIBEICHUBILANGUANGLEDXINPIANLVEDADEGUICHENDI,BINGZAISHANGMIANZHIZUOCHUGONGGONGJINGHANJIEDEJINDAODIANCENGJIYINCHUDAOXIANCENG(CHAOSHENGJINSIQIUHANDIAN)。RANHOU,LIYONGGONGJINGHANJIESHEBEIJIANGDAGONGLVLANGUANGLEDXINPIANYUGUICHENDIHANJIEZAIYIQI。ZHEIZHONGJIEGOUDETEDIANSHIWAIYANCENGZHIJIEYUGUICHENDIJIECHU,GUICHENDIDEREZUYOUYUANYUANDIYULANBAOSHICHENDI,SUOYISANREDEWENTIHENHAODIJIEJUELE。YOUYUDAOZHUANGHOULANBAOSHICHENDICHAOSHANG,CHENGWEICHUGUANGMIAN,LANBAOSHISHITOUMINGDE,YINCICHUGUANGWENTIYEDEDAOJIEJUE。


白小组四肖三肖期期中3、LEDXINPIANDEZHIZAOLIUCHENGSHIZENYANGDE?

  LEDXINPIANZHIZAOZHUYAOSHIWEILEZHIZAOYOUXIAOKEKAODEDIOUMUJIECHUDIANJI,BINGNENGMANZUKEJIECHUCAILIAOZHIJIANZUIXIAODEYAJIANGJITIGONGHANXIANDEYADIAN,TONGSHIJINKENENGDUODICHUGUANG。DUMOGONGYIYIBANYONGZHENKONGZHENGDUFANGFA,QIZHUYAOZAI1.33×10?4PaGAOZHENKONGXIA,YONGDIANZUJIAREHUODIANZISHUHONGJIJIAREFANGFASHICAILIAORONGHUA,BINGZAIDIQIYAXIABIANCHENGJINSHUZHENGQICHENJIZAIBANDAOTICAILIAOBIAOMIAN。YIBANSUOYONGDEPXINGJIECHUJINSHUBAOKUOAuBe、AuZnDENGHEJIN,NMIANDEJIECHUJINSHUCHANGCAIYONGAuGeNiHEJIN。DUMOHOUXINGCHENGDEHEJINCENGHAIXUYAOTONGGUOGUANGKEGONGYIJIANGFAGUANGQUJINKENENGDUODILUCHULAI,SHILIUXIALAIDEHEJINCENGNENGMANZUYOUXIAOKEKAODEDIOUMUJIECHUDIANJIJIHANXIANYADIANDEYAOQIU。GUANGKEGONGXUJIESHUHOUHAIYAOTONGGUOHEJINHUAGUOCHENG,HEJINHUATONGCHANGSHIZAIH2HUON2DEBAOHUXIAJINXING。HEJINHUADESHIJIANHEWENDUTONGCHANGSHIGENJUBANDAOTICAILIAOTEXINGYUHEJINLUXINGSHIDENGYINSUJUEDING。DANGRANRUOSHILANLVDENGXINPIANDIANJIGONGYIHAIYAOFUZA,XUZENGJIADUNHUAMOSHENGZHANG、DENGLIZIKESHIGONGYIDENG。


  4、LEDXINPIANZHIZAOGONGXUZHONG,NAXIEGONGXUDUIQIGUANGDIANXINGNENGYOUJIAOZHONGYAODEYINGXIANG?

白小组四肖三肖期期中  YIBANLAISHUO,LEDWAIYANSHENGCHANWANCHENGZHIHOUTADEZHUYAODIANXINGNENGYIDINGXING,XINPIANZHIZAOBUDUIQICHANCHANGHEBENXINGGAIBIAN,DANZAIDUMO、HEJINHUAGUOCHENGZHONGBUQIADANGDETIAOJIANHUIZAOCHENGYIXIEDIANCANSHUDEBULIANG。BIRUSHUOHEJINHUAWENDUPIANDIHUOPIANGAODOUHUIZAOCHENGOUMUJIECHUBULIANG,OUMUJIECHUBULIANGSHIXINPIANZHIZAOZHONGZAOCHENGZHENGXIANGYAJIANGVFPIANGAODEZHUYAOYUANYIN。ZAIQIEGEHOU,RUGUODUIXINPIANBIANYUANJINXINGYIXIEFUSHIGONGYI,DUIGAISHANXINPIANDEFANXIANGLOUDIANHUIYOUJIAOHAODEBANGZHU。ZHEISHIYINWEIYONGJINGANGSHISHALUNDAOPIANQIEGEHOU,XINPIANBIANYUANHUICANLIUJIAODUODESUIXIEFENMO,ZHEIXIERUGUOZHANZAILEDXINPIANDEPNJIECHUJIUHUIZAOCHENGLOUDIAN,SHENZHIHUIYOUJICHUANXIANXIANG。LINGWAI,RUGUOXINPIANBIAOMIANGUANGKEJIAOBOLIBUGANJING,JIANGHUIZAOCHENGZHENGMIANHANXIANNANYUXUHANDENGQINGKUANG。RUGUOSHIBEIMIANYEHUIZAOCHENGYAJIANGPIANGAO。ZAIXINPIANSHENGCHANGUOCHENGZHONGTONGGUOBIAOMIANCUHUA、HUACHENGDAOTIXINGJIEGOUDENGBANFAKEYITIGAOGUANGQIANG。


白小组四肖三肖期期中  5、LEDXINPIANWEISHENMEYAOFENCHENGBUTONGCHICUN?CHICUNDAXIAODUILEDGUANGDIANXINGNENGYOUNAXIEYINGXIANG?

  LEDXINPIANDAXIAOGENJUGONGLVKEFENWEIXIAOGONGLVXINPIAN、ZHONGGONGLVXINPIANHEDAGONGLVXINPIAN。GENJUKEHUYAOQIUKEFENWEIDANGUANJI、SHUMAJI、DIANZHENJIYIJIZHUANGSHIZHAOMINGDENGLEIBIE。ZHIYUXINPIANDEJUTICHICUNDAXIAOSHIGENJUBUTONGXINPIANSHENGCHANCHANGJIADESHIJISHENGCHANSHUIPINGERDING,MEIYOUJUTIDEYAOQIU。ZHIYAOGONGYIGUOGUAN,XINPIANXIAOKETIGAODANWEICHANCHUBINGJIANGDICHENGBEN,GUANGDIANXINGNENGBINGBUHUIFASHENGGENBENBIANHUA。XINPIANDESHIYONGDIANLIUSHIJISHANGYULIUGUOXINPIANDEDIANLIUMIDUYOUGUAN,XINPIANXIAOSHIYONGDIANLIUXIAO,XINPIANDASHIYONGDIANLIUDA,TAMENDEDANWEIDIANLIUMIDUJIBENCHABUDUO。RUGUO10milXINPIANDESHIYONGDIANLIUSHI20mADEHUA,NEIME40milXINPIANLILUNSHANGSHIYONGDIANLIUKETIGAO16BEI,JI320mA。DANKAOLVDAOSANRESHIDADIANLIUXIADEZHUYAOWENTI,SUOYITADEFAGUANGXIAOLVBIXIAODIANLIUDI。LINGYIFANGMIAN,YOUYUMIANJIZENGDA,XINPIANDETIDIANZUHUIJIANGDI,SUOYIZHENGXIANGDAOTONGDIANYAHUIYOUSUOXIAJIANG。


白小组四肖三肖期期中  6、LEDDAGONGLVXINPIANYIBANZHIDUODAMIANJIDEXINPIAN?WEISHENME?

  YONGYUBAIGUANGDELEDDAGONGLVXINPIANYIBANZAISHICHANGSHANGKEYIKANDAODEDOUZAI40milZUOYOU,SUOWEIDEDAGONGLVXINPIANDESHIYONGGONGLVYIBANSHIZHIDIANGONGLVZAI1WYISHANG。YOUYULIANGZIXIAOLVYIBANXIAOYU20%DABUFENDIANNENGHUIZHUANHUANCHENGRENENG,SUOYIDAGONGLVXINPIANDESANREHENZHONGYAO,YAOQIUXINPIANYOUJIAODADEMIANJI。


  7、ZHIZAOGaNWAIYANCAILIAODEXINPIANGONGYIHEJIAGONGSHEBEIYUGaP、GaAs、InGaAlPXIANGBIYOUNAXIEBUTONGDEYAOQIU?WEISHENME?

  普通的LED红黄芯片和高亮四元红黄芯片的基板都采用GaP、GaAs等化合物半导体材料,一般都可以做成N型衬底。采用湿法工艺进行光刻,最后用金刚砂轮刀片切割成芯片。GaN材料的蓝绿芯片是用的蓝宝石衬底,由于蓝宝石衬底是绝缘的,所以不能作为LED的一个极,必须通过干法刻蚀的工艺在外延面上同时制作P/N两个电极并且还要通过一些钝化工艺。由于蓝宝石很硬,用金刚砂轮刀片很难划成芯片。它的工艺过程一般要比GaP、GaAs材料的LED多而复杂。


白小组四肖三肖期期中  8、“TOUMINGDIANJI”XINPIANDEJIEGOUYUTADETEDIANSHISHENME?

  SUOWEITOUMINGDIANJIYISHIYAONENGGOUDAODIAN,ERSHIYAONENGGOUTOUGUANG。ZHEIZHONGCAILIAOXIANZAIZUIGUANGFANYINGYONGZAIYEJINGSHENGCHANGONGYIZHONG,QIMINGCHENGJIAOYANGHUAYINXI,YINGWENSUOXIEITO,DANTABUNENGZUOWEIHANDIANSHIYONG。ZHIZUOSHIXIANYAOZAIXINPIANBIAOMIANZUOHAOOUMUDIANJI,RANHOUZAIBIAOMIANFUGAIYICENGITOZAIZAIITOBIAOMIANDUYICENGHANDIAN。ZHEIYANGCONGYINXIANSHANGXIALAIDEDIANLIUTONGGUOITOCENGJUNYUNFENBUDAOGEGEOUMUJIECHUDIANJISHANG,TONGSHIITOYOUYUZHESHELVCHUYUKONGQIYUWAIYANCAILIAOZHESHELVZHIJIAN,KETIGAOCHUGUANGJIAODU,GUANGTONGLIANGYEKEZENGJIA。



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