The kuwala dzuwa lakuyaUV LEDzimatsimikiziridwa makamaka ndi kuchuluka kwakunja kwachulukidwe, komwe kumakhudzidwa ndi kuchuluka kwamkati kwamkati komanso kuwala kotulutsa kuwala. Ndi kuwongolera kosalekeza (> 80%) kwa mphamvu yamkati yamkati yakuya kwa UV LED, kuwala kwakuya kwakuya kwa UV LED kwakhala chinthu chofunikira kwambiri cholepheretsa kuwongolera kwa kuwala kwakuya kwa UV LED, komanso kutulutsa bwino kwa kuwala kwa UV. LED yozama ya UV imakhudzidwa kwambiri ndi ukadaulo wonyamula. Ukadaulo wakuya wa UV wa LED ndi wosiyana ndi ukadaulo waposachedwa wapainting wa LED. White LED imakhala ndi zida za organic (epoxy resin, silika gel, etc.), koma chifukwa cha kutalika kwa mafunde akuya a UV ndi mphamvu zambiri, zida za organic zimawonongeka ndi UV pansi pa cheza chakuya cha UV, chomwe chimakhudza kwambiri. kuwala kwakuya komanso kudalirika kwakuya kwa UV LED. Chifukwa chake, kuyika kwakuya kwa UV LED ndikofunikira kwambiri pakusankha zida.

Zida zokutira za LED zimaphatikizanso zinthu zotulutsa kuwala, zida zopangira kutentha komanso zida zomangira zowotcherera. The kuwala emitting zakuthupi ntchito Chip luminescence m'zigawo, kuwala malamulo, makina chitetezo, etc; Kutentha kwapang'onopang'ono kumagwiritsidwa ntchito pogwirizanitsa magetsi a chip, kutentha kwa kutentha ndi chithandizo chamakina; Zida zomangira zowotcherera zimagwiritsidwa ntchito pakulimbitsa chip, kulumikiza ma mandala, ndi zina.

1. zinthu zotulutsa kuwala:ndiKuwala kwa LEDmawonekedwe otulutsa nthawi zambiri amatenga zida zowonekera kuti azindikire kutulutsa ndikusintha, ndikuteteza chip ndi gawo lozungulira. Chifukwa cha kusakanizidwa bwino kwa kutentha ndi kutsika kwa kutentha kwa zinthu zakuthupi, kutentha kopangidwa ndi chipangizo chakuya cha UV LED kumapangitsa kutentha kwa organic ma CD osanjikiza kukwera, ndipo zida za organic zidzawonongeka, kukalamba kwamafuta komanso ngakhale carbonization yosasinthika. pa kutentha kwakukulu kwa nthawi yaitali; Kuphatikiza apo, pansi pa cheza champhamvu kwambiri cha ultraviolet, wosanjikiza woyika organic udzakhala ndi zosintha zosasinthika monga kuchepa kwa transmittance ndi ma microcracks. Ndi kuwonjezeka kosalekeza kwa mphamvu zakuya za UV, mavutowa amakula kwambiri, zomwe zimapangitsa kuti zikhale zovuta kuti zida zachikhalidwe zikwaniritse zosowa za UV LED ma CD. Nthawi zambiri, ngakhale zida zina za organic zanenedwa kuti zimatha kupirira kuwala kwa ultraviolet, chifukwa cha kusagwira bwino kwa kutentha komanso kusawotcha mpweya kwa zinthu zachilengedwe, zida za organic zikadali zochepa mu UV.Kuyika kwa LED. Chifukwa chake, ofufuza nthawi zonse akuyesera kugwiritsa ntchito zida zowoneka bwino monga galasi la quartz ndi safiro kuti aziyika ma LED akuya a UV.

2. Zida zochotsera kutentha:pakali pano, LED kutentha dissipate gawo lapansi makamaka monga utomoni, zitsulo ndi ceramic. Magawo onse a utomoni ndi zitsulo amakhala ndi organic resin insulation layer, zomwe zingachepetse kutenthetsa kwa gawo lapansi lotenthetsera kutentha ndikukhudza magwiridwe antchito a gawo lapansi; Magawo a ceramic makamaka amaphatikiza magawo apamwamba / otsika otenthetsera ceramic (HTCC / ltcc), magawo a ceramic okhuthala (TPC), ma copper-clad ceramic substrates (DBC) ndi electroplated ceramic substrates (DPC). Magawo a Ceramic ali ndi zabwino zambiri, monga mphamvu zamakina apamwamba, kutchinjiriza kwabwino, kutenthetsa kwambiri, kukana kutentha kwabwino, kutsika kocheperako kwa kukulitsa kwamafuta ndi zina zotero. Amagwiritsidwa ntchito kwambiri pakuyika zida zamagetsi, makamaka ma CD amphamvu kwambiri a LED. Chifukwa cha kuchepa kwa kuwala kwakuya kwa UV LED, mphamvu zambiri zamagetsi zimasinthidwa kukhala kutentha. Pofuna kupewa kuwonongeka kwa kutentha kwa chip chifukwa cha kutentha kwakukulu, kutentha kopangidwa ndi chip kuyenera kutayidwa kumalo ozungulira panthawi yake. Komabe, kuwala kwakuya kwa UV LED makamaka kumadalira gawo lapansi lotayira kutentha ngati njira yopangira kutentha. Chifukwa chake, gawo laling'ono lotenthetsera la ceramic ndi chisankho chabwino pagawo lotenthetsera kutentha pakuyika kwakuya kwa UV LED.

3. Zida zomangira zowotcherera:Zida zowotcherera zakuya za UV zikuphatikiza zida zolimba za kristalo ndi zida zowotcherera za gawo lapansi, zomwe zimagwiritsidwa ntchito kuzindikira kuwotcherera pakati pa chip, chivundikiro chagalasi (lens) ndi gawo lapansi la ceramic. Kwa flip chip, njira ya Gold Tin eutectic imagwiritsidwa ntchito kuzindikira kulimba kwa chip. Kwa tchipisi chopingasa komanso choyima, guluu wasiliva wowongolera ndi phala wopanda lead atha kugwiritsidwa ntchito kumaliza kulimba kwa chip. Poyerekeza ndi guluu siliva ndi lead-free solder phala, Gold Tin eutectic chomangira mphamvu ndi mkulu, mawonekedwe mawonekedwe ndi zabwino, ndi madutsidwe matenthedwe wosanjikiza wosanjikiza ndi mkulu, amene amachepetsa kukana LED matenthedwe. Magalasi ophimba mbale amawotcherera pambuyo pa kulimba kwa chip, kotero kutentha kwa kuwotcherera kumachepetsedwa ndi kukana kutentha kwa chip solidification wosanjikiza, makamaka kuphatikizapo kugwirizana mwachindunji ndi solder kugwirizana. Kulumikiza kwachindunji sikufuna zida zomangira zapakatikati. Njira yotentha kwambiri komanso yothamanga kwambiri imagwiritsidwa ntchito pomaliza kuwotcherera mwachindunji pakati pa mbale yophimba galasi ndi gawo lapansi la ceramic. The chomangira mawonekedwe ndi lathyathyathya ndipo ali ndi mphamvu mkulu, koma ali ndi zofunika mkulu zipangizo ndi kulamulira ndondomeko; Solder bonding amagwiritsa otsika kutentha malata zochokera solder monga wosanjikiza wapakatikati. Pansi pa kutentha ndi kupanikizika, kugwirizanitsa kumatsirizidwa ndi kufalikira kwa ma atomu pakati pa solder wosanjikiza ndi zitsulo. The ndondomeko kutentha ndi otsika ndi ntchito ndi yosavuta. Pakalipano, kugwirizana kwa solder nthawi zambiri kumagwiritsidwa ntchito pozindikira mgwirizano wodalirika pakati pa mbale yophimba galasi ndi gawo lapansi la ceramic. Komabe, zigawo zitsulo ziyenera kukonzedwa pamwamba pa galasi chivundikiro mbale ndi ceramic gawo lapansi pa nthawi yomweyo kukwaniritsa zofunika kuwotcherera zitsulo, ndi kusankha solder, ❖ kuyanika solder, kusefukira kwa solder ndi kuwotcherera kutentha ayenera kuganiziridwa mu ndondomeko kugwirizana. .

M'zaka zaposachedwa, ofufuza kunyumba ndi kunja achita kafukufuku wozama pazitsulo zozama za UV za LED, zomwe zathandiza kuti kuwala kowala komanso kudalirika kwa UV LED yozama kuchokera kuzinthu zamakono zamakono, ndikulimbikitsanso chitukuko cha UV chakuya. Ukadaulo wa LED.