Yiziphi Izinto Ezithinta I-AC -free LED Light Efficiency

1. Ubuchwepheshe bokukhipha ukushisa Ku-diode ekhipha ukukhanya ehlanganiswe ne-PN, lapho i-current eya phambili igeleza isuka ku-PN, ifindo le-PN linokulahlekelwa kokushisisa. Lawa ma-calorie asakazwa emoyeni ngeglue ebophayo, izinto zokunisela, ukucwiliswa kokushisa, njll., futhi akhiphe emoyeni. Kule nqubo, ingxenye ngayinye yezinto ezibonakalayo inokumelana nokushisa ukuvimbela ukugeleza kokushisa, okungukuthi, ukumelana nokushisa, ukumelana nokushisa kwe-AC -free LED kuyinani elinqunyiwe elinqunywe usayizi wedivayisi, isakhiwo kanye nezinto ezibonakalayo. Ukumelana okushisayo kwe-diode ekhanyayo yi-RTH (/w), futhi amandla okukhipha ukushisa yi-PD (W). Ngalesi sikhathi, izinga lokushisa le-PN knot elibangelwa ukulahlekelwa ukushisa kwamanje likhuphukela ku: t () = Rth PD. Izinga lokushisa lefindo le-PN lithi: TJ = TARTH PD, lapho i-TA iyizinga lokushisa elizungezile. Njengoba izinga lokushisa elikhuphukayo lefindo lizonciphisa ithuba lokuhlanganisa i-PN, ukukhanya kwama-diode akhazimulayo kuzokwehla. Ngesikhathi esifanayo, ngenxa yokwenyuka kwezinga lokushisa okubangelwa ukulahlekelwa okushisayo, ukukhanya kwe-diode ekhipha ukukhanya ngeke kuqhubeke kwanda ngesilinganiso samanje, okungukuthi, isenzakalo sokugcwala okushisayo. Ngaphezu kwalokho, ngokukhuphuka kwezinga lokushisa lefindo, ubude begagasi obukhazimulayo buzokhukhuleka futhi bubheke kumagagasi amade, acishe abe ngu-0.2-0.3nm/, okungele-LED emhlophe engena-AC nge-LED emhlophe engena-AC. ngokumboza i-YAG fluorescent powder nge-chip ye-Blu-ray. Ukukhukhuleka kwe-wavelength ye-Blu -ray kuzobangela ukufaniswa okulahlekile nempushana ye-fluorescent ukuze kushukumise ubude begagasi, ngaleyo ndlela kunciphise ukusebenza kahle kokukhanya kokukhanya okumhlophe kwe-LED, kanye noshintsho kuzinga lokushisa lombala wokukhanya omhlophe. Nge-diode ekhipha amandla, amandla okushayela ngokuvamile angaphezulu kwamakhulu amamilimitha. Ukuminyana kwamanje kwefindo le-PN kuphezulu kakhulu, ngakho-ke ukukhuphuka kwezinga lokushisa kwefindo le-PN kusobala kakhulu. Ngokupakishwa kanye nezinhlelo zokusebenza, indlela yokunciphisa ukumelana nokushisa komkhiqizo, ukuze ukushisa okukhiqizwa ifindo le-PN kukhishwe ngokushesha ngangokunokwenzeka, okungakwazi nje ukuthuthukisa ukugcwala kwamanje komkhiqizo, ukuthuthukisa ukusebenza kahle kokukhanya komkhiqizo. umkhiqizo, kodwa futhi uthuthukise ukwethembeka nokuphila komkhiqizo. Ukuze kuncishiswe ukumelana nokushisa komkhiqizo, ukukhethwa kwezinto zokupakisha kubaluleke kakhulu, kufaka phakathi ukushisa okushisa, ukunamathela, njll. Ukumelana nokushisa kwempahla ngayinye kufanele kube phansi, okungukuthi, ukusebenza kokushisa kokushisa kuhle. Okwesibili, ukwakheka kwesakhiwo kufanele kube okunengqondo. I-thermal conductivity emkhatsini wento ngayinye ihambisana ngokuqhubekayo, futhi ukuqhutshwa kwe-thermal phakathi kwezinto ezibonakalayo kuhle ukugwema ukukhiqiza amabhodlela okukhipha ukushisa ku-thermal conductivity. Ngesikhathi esifanayo, kuyadingeka ukuqinisekisa kusukela kubuciko, ukushisa kukhishwa ngesikhathi ngokusho kwesiteshi sokushisa esiklanyelwe ngaphambili. 2. Ukukhethwa kweglue yokugcwalisa Ngokomthetho wokuphikiswa, lapho ukukhanya kuyisigameko kusuka emithonjeni yokukhanya kuya endaweni ekhanyayo ekhanyayo, lapho i-angle yesigameko ifinyelela inani elithile, okungukuthi, lapho i-engeli ebucayi inkulu kune-engeli ebucayi, ukwethulwa okuphelele kuzokwenzeka. Ngokuya nge-chip ye-GAN eluhlaza okwesibhakabhaka, inkomba ye-refractive yezinto ze-GAN ingu-2.3. Lapho ukukhanya kudubula kusuka kukristalu kuya emoyeni, ngokomthetho wokuphikisa, i-engeli ebalulekile 0 = sin-(n2/n1) iyinkomba ye-refractive, i-N1 iyinkomba ye-refractive ye-GAN, ngaleyo ndlela ibala i-engeli ebalulekile 0 cishe ama-25.8 degrees. Kulokhu, i-engeli yesigameko kuphela engu-25.8 degrees ekhoneni lezinhlangothi ezintathu lesikhala ekhoneni le-three-dimensional yesikhala okubikiwe. Njengamanje, ukusebenza kahle kwe-quantum yangaphandle kwe-chip ye-GAN cishe kungama-30% -40%. Ngakho-ke, ngenxa yokumuncwa kwangaphakathi kwe-chip crystal absorption, Ingxenye yokukhanyisa ngaphandle kwekristalu incane kakhulu. Ngokwemibiko, ukusebenza kahle kwe-quantum yangaphandle ye-chip ye-GAN okwamanje cishe ku-30% -40%. Ngokufanayo, ukukhanya okukhishwa yi-chip kufanele kudluliselwe esikhaleni ngokusebenzisa impahla yokupakisha, futhi umphumela wezinto ezibonakalayo ekusebenzeni kahle kokukhanyisa kwezinto kufanele kucatshangelwe. Ngakho-ke, ukuze kuthuthukiswe ukusebenza kahle kokukhanyisa kokufakwa kwemikhiqizo ye-AC-free LED, inani le-N2 kufanele lenyuswe, okungukuthi, inkomba ye-refractive yezinto zokupakisha ukuze kuthuthukiswe i-angle ebalulekile yomkhiqizo, ngaleyo ndlela kuthuthukiswe ukukhanyisa komkhiqizo. ukusebenza kahle. Ngesikhathi esifanayo, ukumuncwa kwezinto zokukhanyisa zezinto zokupakisha kufanele kube kuncane. Ukuze ukwandise ingxenye yokukhanya ekukhanyeni, ukwakheka kwephakheji ku-arched noma i-hemispherical. Ngale ndlela, lapho ukukhanya kudutshulwa kusuka kokupakishwayo kuya emoyeni, cishe kudutshulwa kuqonde kusixhumi esibonakalayo, ngakho-ke akukho ukuboniswa okugcwele okuzokwenziwa. 3. Kunezici ezimbili eziyinhloko zokwelashwa kwe-reflection treatment reflection treatment. Enye indlela yokwelapha ekhanyayo ngaphakathi kwe-chip, kanti enye iwukubonakaliswa kwezinto zokupakisha ekukhanyeni. Ngokubonisa kwangaphakathi nangaphandle, kuzokwandisa ingxenye ye-optical pass kusuka ngaphakathi kwe-chip, kunciphise Ukumuncwa kwangaphakathi kwe-chip, kuthuthukise amandla e-AC -free LED oqedile ukukhanya komkhiqizo wokukhanya. Mayelana nokupakishwa, ama-LED ohlobo lwamandla ngokuvamile ahlanganisa i-chip yohlobo lwamandla kubakaki bensimbi noma i-substrate ene-cavity ekhanyayo. I-bracket -type reflex cavity ngokuvamile isebenzisa i-electroplating ukuze ithuthukise umphumela wokubonisa. Izindlela, ukwelashwa kwe-electroplating kuyenziwa, kodwa lezi zindlela ezimbili ezingenhla zithinteka ngokunemba kwesikhunta kanye nenqubo. Njengamanje, umgodi we-reflex wasekhaya wohlobo lweshidi, ngenxa yokunemba okwanele kokupholisha noma i-oxidation ye-coating yensimbi, umphumela we-reflex umpofu, obangele ukukhanya okuningi kudonswe ngemva kokukhishwa kwendawo ekhanyayo, futhi ayikwazi ukuboniswa endaweni yokukhanya endaweni elindelwe, okuholela ekufinyeleleni ekufinyeleleni okuhlosiwe okulindelekile, okuholela ekufinyeleleni ekufinyeleleni okuhlosiwe okulindelekile, okuholela ekufinyeleleni ekufinyeleleni ekufinyeleleni ekufinyeleleni okulindelekile, okuholela ekufinyeleleni ekufinyeleleni ekuhlosweni okulindelekile, okuholela ekufinyeleleni ekufinyeleleni ekuhlosweni okulindelekile, okuholela ekufinyeleleni ekufinyeleleni okulindelekile, okuholela ekufinyeleleni ekufinyeleleni nasekufinyeleleni. okuhlosiwe okulindelekile, kuzoholela ekufinyeleleni ekufinyeleleni ukuze kufinyelele Ukusebenza kahle kokukhanyisa ngemuva kokupakishwa kuphansi. Sisungule inqubo yokwelapha ye-reflex nge-organic material enamalungelo obunikazi bobuhlakani obuzimele obunobunikazi obuzimele ngemva kocwaningo nokuhlola okuningi. Ukukhanya okungaphezulu kwayo kukhombisa ukuphuma kokukhanya. Ukusebenza kahle kokucubungula komkhiqizo ngemuva kokucubungula kungakhuphuka ngo-30% -50% uma kuqhathaniswa nokucubungula. Umphumela wokukhanya we-LED yethu yamanje yamandla okukhanya amhlophe angu-1W ungafinyelela ku-40-50LM/W (imiphumela yokuhlola ebangeni lethuluzi lokuhlola i-spectrum PMS-50), futhi bathole umphumela omuhle wokupakisha. 4. Ngokwamandla amhlophe i-AC -free LED, ukuthuthukiswa kwamandla okukhanya kwe-AC kuhlobene nokukhethwa nokucubungula inqubo ye-fluorescent powder. Ukuze kuthuthukiswe ukusebenza kahle kwempushana ye-fluorescent ukuze kugqugquzelwe i-chip eluhlaza okwesibhakabhaka, okokuqala, ukukhetha kwempushana ye-fluorescent kufanele kube ngokufanele, okuhlanganisa ubude begagasi obushukumisayo, usayizi wezinhlayiyana, nokusebenza kahle kogqozi. Okwesibili, ukumbozwa kwempuphu ye-fluorescent kufanele kuhlanganiswe ngokulinganayo, futhi ukujiya kwe-chip ngayinye ekhanyayo ene-chip ekhanyayo ngokulinganayo bukhulu ngokulinganayo, ukuze kungabangeli ukukhanya kwendawo akukwazi ukudutshulwa ngenxa yobukhulu obungalingani. Idizayini enhle yokukhipha ukushisa idlala umthelela omkhulu ekuthuthukiseni ukukhanya komkhiqizo we-LED ongenawo amandla, futhi iyimfuneko yokuqinisekisa impilo yomkhiqizo nokuthembeka. Futhi isiteshi sokukhanyisa esiklanywe kahle, lapha ukubhekisela ekwakhiweni kwesakhiwo, ukukhethwa kwezinto ezibonakalayo kanye nokucubungula inqubo ye-reflection cavity, i-glue yokugcwalisa, njll, engathuthukisa ngokuphumelelayo ukusebenza kahle kokukhanyisa kwe-LED yamandla -type. Ngokukhanya okumhlophe okusekelwe kumandla we-LED, ukukhetha kanye nomklamo wenqubo ye-fluorescent powder nakho kubaluleke kakhulu ukuthuthukisa ukuthuthukiswa kwamabala okukhanya kanye nokwenza ngcono ukusebenza kahle kokukhanyisa.