向角内发射。顶部包封的环氧树脂做成一定形状，有这样几种作用：保护管芯等不受外界侵蚀；采用不同的形状和
xiang jiao nei fa she ding bu bao feng de huan yang shu zhi zuo cheng yi ding xing zhuang you zhe yang ji zhong zuo yong bao hu guan xin deng bu shou wai jie qin shi cai yong bu tong de xing zhuang he
引线架的另一管脚相连，然后其顶部用环氧树脂包封。反射杯的作用是收集管芯侧面、界面发出的光，向期望的方
yin xian jia de ling yi guan jiao xiang lian ran hou qi ding bu yong huan yang shu zhi bao feng fan she bei de zuo yong shi shou ji guan xin ce mian jie mian fa chu de guang xiang qi wang de fang
芯粘结或烧结在引线架上，管芯的正极通过球形接触点与金丝，键合为内引线与一条管脚相连，负极通过反射杯和
xin zhan jie huo shao jie zai yin xian jia shang guan xin de zheng ji tong guo qiu xing jie chu dian yu jin si jian he wei nei yin xian yu yi tiao guan jiao xiang lian fu ji tong guo fan she bei he
封材料，应用要求提高led的内、外部量子效率。常规φ5mm型led封装是将边长0.25mm的正方形管
feng cai liao ying yong yao qiu ti gao led de nei wai bu liang zi xiao lv chang gui 5mm xing led feng zhuang shi jiang bian chang 0.25mm de zheng fang xing guan
不是管芯产生的所有光都可以释放出来，这主要取决于半导体材料质量、管芯结构及几何形状、封装内部结构与包
bu shi guan xin chan sheng de suo you guang dou ke yi shi fang chu lai zhe zhu yao qu jue yu ban dao ti cai liao zhi liang guan xin jie gou ji ji he xing zhuang feng zhuang nei bu jie gou yu bao
发出可见光，紫外光或近红外光。但pn结区发出的光子是非定向的，即向各个方向发射有相同的几率，因此，并
fa chu ke jian guang zi wai guang huo jin hong wai guang dan pn jie qu fa chu de guang zi shi fei ding xiang de ji xiang ge ge fang xiang fa she you xiang tong de ji lv yin ci bing
的核心发光部分是由p型和n型半导体构成的pn结管芯，当注入pn结的少数载流子与多数载流子复合时，就会
de he xin fa guang bu fen shi you p xing he n xing ban dao ti gou cheng de pn jie guan xin dang zhu ru pn jie de shao shu zai liu zi yu duo shu zai liu zi fu he shi jiu hui
：可见澄海3c5.50光的功能，既有电参数，又有光参数的设计及技术要求，无法简单地将分立器件的封装用于led。led
ke jian cheng hai 3c5.50 guang de gong neng ji you dian can shu you you guang can shu de she ji ji ji shu yao qiu wu fa jian dan di jiang fen li qi jian de feng zhuang yong yu led led
体内，封装的作用主要是保护管芯和完成电气互连。而led封装则是完成输出电信号，保护管芯正常工作，输出
ti nei feng zhuang de zuo yong zhu yao shi bao hu guan xin he wan cheng dian qi hu lian er led feng zhuang ze shi wan cheng shu chu dian xin hao bao hu guan xin zheng chang gong zuo shu chu
在分立器件封装技术基础上发展与演变而来的，但却有很大的特殊性。一般情澄海3c5.50况下，分立器件的管芯被密封在封装
zai fen li qi jian feng zhuang ji shu ji chu shang fa zhan yu yan bian er lai de dan que you hen da de te shu xing yi ban qing cheng hai 3c5.50 kuang xia fen li qi jian de guan xin bei mi feng zai feng zhuang
实际应用，才能为顾客提供服务，使产业链环环相扣，无缝畅通。2 led封装的特殊性led封装技术大都是
shi ji ying yong cai neng wei gu ke ti gong fu wu shi chan ye lian huan huan xiang kou wu feng chang tong 2 led feng zhuang de te shu xing led feng zhuang ji shu da dou shi
向市场的产业化必经之路，从某种意义上讲是链接产业与市场的纽带，只有封装好的才能成为终端产品，才能投入
xiang shi chang de chan ye hua bi jing zhi lu cong mou zhong yi yi shang jiang shi lian jie chan ye yu shi chang de niu dai zhi you feng zhuang hao de cai neng cheng wei zhong duan chan pin cai neng tou ru
制造生产，下游归led封装与测试，研发低热澄海3c5.50阻、优异光学特性、高可靠的封装技术是新型led走向实用、走
zhi zao sheng chan xia you gui led feng zhuang yu ce shi yan fa di re cheng hai 3c5.50 zu you yi guang xue te xing gao ke kao de feng zhuang ji shu shi xin xing led zou xiang shi yong zou
额达800亿美元。在led产业链接中，上游是led衬底晶片及衬底生产，中游的产业化为led芯片设计及
e da 800 yi mei yuan zai led chan ye lian jie zhong shang you shi led chen di jing pian ji chen di sheng chan zhong you de chan ye hua wei led xin pian she ji ji
现蓝、绿、白的led的中批量生产。澄海3c5.50据预测，到2005年国际上led的市场需求量约为2000亿只，销售
xian lan lv bai de led de zhong pi liang sheng chan cheng hai 3c5.50 ju yu ce dao 2005 nian guo ji shang led de shi chang xu qiu liang yue wei 2000 yi zhi xiao shou
ed外延片和芯片的大生产，年产10亿只以上红、橙、黄超高亮度led管芯，突破gan材料的关键技术，实
ed wai yan pian he xin pian de da sheng chan nian chan 10 yi zhi yi shang hong cheng huang chao gao liang du led guan xin tu po gan cai liao de guan jian ji shu shi
占世界总量的12澄海3c5.50％，“十五”期间的产业目标是达到年产300亿只的能力，实现超高亮度aigslnp的l
zhan shi jie zong liang de 12 cheng hai 3c5.50 shi wu qi jian de chan ye mu biao shi da dao nian chan 300 yi zhi de neng li shi xian chao gao liang du aigslnp de l
突飞猛进，现已能批量生产整个可见光谱段各种颜色的高亮度、高性能产品。国产红、绿、橙、黄的led产量约
tu fei meng jin xian yi neng pi liang sheng chan zheng ge ke jian guang pu duan ge zhong yan se de gao liang du gao xing neng chan pin guo chan hong lv cheng huang de led chan liang yue
应时间极短，光色纯，结构牢固，抗冲击，耐振动，性能稳定可靠，重量轻，体积小，成本澄海3c5.50低等一系列特性，发展
ying shi jian ji duan guang se chun jie gou lao gu kang chong ji nai zhen dong xing neng wen ding ke kao zhong liang qing ti ji xiao cheng ben cheng hai 3c5.50 di deng yi xi lie te xing fa zhan
led是一类可直接将电能转化为可见光和辐射能的发光器件，具有工作电压低，耗电量小，发光效率高，发光响
led shi yi lei ke zhi jie jiang dian neng zhuan hua wei ke jian guang he fu she neng de fa guang qi jian ju you gong zuo dian ya di hao dian liang xiao fa guang xiao lv gao fa guang xiang