Chip ya LED ni iki? Ni ibihe bintu biranga? Intego nyamukuru yo gukora chip ya LED nugukora neza kandi yizewe ya ohm itumanaho ya electrode, no guhura nigabanuka ritoya ryumubyigano hagati yibikoresho byandikirwa kandi bigatanga igitutu cyumuvuduko wo kugurisha insinga, mugihe hagaragaye cyane urumuri rusohoka. Inzira ya firime yambukiranya muri rusange ikoresha uburyo bwo guhumeka. Mu cyuho kinini cya 4Pa, ibikoresho bishongeshwa nubushyuhe bwo gushyushya cyangwa uburyo bwo gushyushya ibisasu bya elegitoronike, hanyuma BZX79C18 ihinduka imyuka yicyuma igashyirwa hejuru yibikoresho bya semiconductor munsi yumuvuduko muke.
Ibyuma bikoreshwa cyane muburyo bwa P burimo ibinyobwa nka AuBe na AuZn, mugihe ibyuma byo guhuza kuruhande rwa N-akenshi bikozwe muri AuGeNi. Igice cya alloy gikozwe nyuma yo gutwikirwa nacyo kigomba gushyirwa ahagaragara bishoboka hashoboka mugace ka luminescent hifashishijwe uburyo bwa Photolithography, kugirango igisigara gisigaye gishobore kuzuza ibisabwa byingirakamaro kandi yizewe yo hasi ya ohm ihuza electrode hamwe nudupapuro twinshi two kugurisha insinga. Ibikorwa byo gufotora bimaze kurangira, bigomba no kunyura mu nzira ivanze, ubusanzwe bikorwa mu rwego rwo kurinda H2 cyangwa N2. Igihe nubushyuhe bwo kuvanga mubisanzwe bigenwa nibintu nkibiranga ibikoresho bya semiconductor nuburyo bw itanura rya alloy. Byumvikane ko, niba ubururu-icyatsi nubundi buryo bwa chip electrode ikora bigoye, birakenewe ko wongera imikurire ya firime ya passivation, inzira ya plasma etching, nibindi.
Mubikorwa byo gukora LED chip, niyihe nzira igira ingaruka zikomeye kumikorere yabo ya optoelectronic?
Muri rusange, nyuma yo kurangiza umusaruro wa LED epitaxial, ibikorwa byingenzi byamashanyarazi byarangiye, kandi gukora chip ntabwo bihindura imiterere yibikorwa byayo. Ariko, ibintu bidakwiye mugihe cyo gutwikira no kuvanga birashobora gutuma ibice bimwe byamashanyarazi biba bibi. Kurugero, ubushyuhe buke cyangwa buke buvanze burashobora gutera imikoranire mibi ya Ohmic, niyo mpamvu nyamukuru itera umuvuduko mwinshi wa voltage ugabanuka VF mugukora chip. Nyuma yo gukata, inzira zimwe zo kwangirika kumpande za chip zirashobora gufasha mugutezimbere gusubira inyuma kwa chip. Ibi ni ukubera ko nyuma yo gukata hamwe na diyama yo gusya uruziga, hazaba imyanda myinshi isigaye hamwe nifu kumpera ya chip. Niba ibyo bice bifatanye na PN ihuza chip ya LED, bizatera amashanyarazi ndetse no gusenyuka. Byongeye kandi, niba abafotora hejuru ya chip badakuweho neza, bizatera ingorane mugucuruza imbere no kugurisha muburyo busanzwe. Niba iri inyuma, bizatera kandi umuvuduko ukabije. Mugihe cyo gukora chip, uburyo bwo hejuru hamwe na trapezoidal birashobora gukoreshwa kugirango urumuri rwiyongere.
Kuki chip ya LED ikeneye kugabanwa mubunini butandukanye? Ni izihe ngaruka z'ubunini ku mikorere ya LED optoelectronic?
LED chip irashobora kugabanywamo amashanyarazi make, amashanyarazi aciriritse, hamwe nimbaraga zikomeye zishingiye kububasha. Ukurikije ibyifuzo byabakiriya, irashobora kugabanywamo ibyiciro nkurwego rumwe rukumbi, urwego rwa digitale, urwego rwa dot matrix, hamwe no kumurika imitako. Kubijyanye nubunini bwihariye bwa chip, biterwa nurwego nyirizina rwo gukora ibicuruzwa bitandukanye kandi nta bisabwa byihariye. Igihe cyose inzira yatambutse, chip irashobora kongera umusaruro wibice no kugabanya ibiciro, kandi imikorere yifoto ntishobora guhinduka. Ibiriho bikoreshwa na chip mubyukuri bifitanye isano nubucucike bwubu butemba. Chip ntoya ikoresha amashanyarazi make, mugihe chip nini ikoresha byinshi bigezweho, kandi uburinganire bwacyo buringaniye ni bumwe. Urebye ko gukwirakwiza ubushyuhe aricyo kibazo nyamukuru munsi yumuyaga mwinshi, imikorere yacyo yumucyo iri munsi yibyo munsi yumuyaga muke. Ku rundi ruhande, uko agace kiyongera, kurwanya umubiri wa chip bizagabanuka, bigatuma igabanuka ryumuvuduko wimbere.

Ni ubuhe buso rusange bwa LED ifite ingufu nyinshi? Kubera iki?
LED ifite ingufu nyinshi zikoreshwa mumucyo wera zigaragara kumasoko hafi 40mil, kandi ingufu zikoreshwa mumashanyarazi menshi muri rusange zerekeza kumashanyarazi arenga 1W. Bitewe nubushobozi bwa kwant muri rusange buri munsi ya 20%, ingufu nyinshi zamashanyarazi zihindurwamo ingufu zumuriro, bityo gukwirakwiza ubushyuhe ningirakamaro kuri chip-power-power, ibasaba kugira ahantu hanini.
Nibihe bisabwa bitandukanye muburyo bwa tekinoroji ya chip nibikoresho byo gutunganya ibikoresho bya GaN epitaxial ugereranije na GaP, GaAs, na InGaAlP? Kubera iki?
Substrates ya LED isanzwe itukura n'umuhondo hamwe numucyo mwinshi wa quaternary umutuku numuhondo byombi bikoresha ibikoresho bya semiconductor compound nka GaP na GaAs, kandi mubisanzwe birashobora gukorwa muburyo bwa N-substrate. Gukoresha uburyo butose kuri Photolithography, hanyuma ugacamo uduce ukoresheje diyama yo gusya inziga. Chip yubururu-icyatsi gikozwe mubikoresho bya GaN ikoresha substrate ya safiro. Bitewe nimiterere ya safiro substrate, ntishobora gukoreshwa nka electrode ya LED. Kubwibyo, byombi P / N electrode igomba gukorwa hejuru ya epitaxial hejuru yumye kandi hagomba gukorwa inzira ya passivation. Bitewe n'uburemere bwa safiro, biragoye gucamo uduce hamwe na diyama yo gusya. Ibikorwa byayo byo gukora muri rusange biragoye kuruta ibya GaP na GaAs ibikoresho byaLED amatara yumwuzure.

Ni ubuhe bwoko n'ibiranga chip ya “electrode iboneye”?
Ibyo bita electrode ibonerana bigomba kuba bishobora gutwara amashanyarazi kandi bigashobora kohereza urumuri. Ibi bikoresho ubu bikoreshwa cyane mubikorwa byo gutunganya ibintu bya kristu, kandi izina ryayo ni indium tin oxyde, mu magambo ahinnye nka ITO, ariko ntishobora gukoreshwa nka padi. Mugihe cyo gukora, birakenewe kubanza gutegura electrode ya ohmic hejuru ya chip, hanyuma igapfundikira hejuru hamwe na ITO, hanyuma ugashyira igipapuro cyabacuruzi hejuru ya ITO. Muri ubu buryo, ikigezweho kimanuka kiva kumurongo wogukwirakwiza kuringaniza ibice bya ITO kuri buri ohmic contact electrode. Muri icyo gihe, kubera indangagaciro yo kwanga ITO iri hagati yikirere nigipimo cyo kugabanya ibintu bya epitaxial, inguni yumucyo irashobora kwiyongera, kandi urumuri rushobora kwiyongera.

Ni ubuhe buryo rusange bwiterambere rya tekinoroji ya chip yo kumurika igice cya kabiri?
Hamwe niterambere ryikoranabuhanga rya semiconductor LED, ikoreshwa ryayo murwego rwo kumurika naryo riragenda ryiyongera, cyane cyane kugaragara kwa LED yera, byahindutse ingingo ishyushye mumatara ya semiconductor. Nyamara, ibyingenzi byingenzi hamwe nubuhanga bwo gupakira biracyakenewe kunozwa, kandi iterambere rya chip rigomba kwibanda kumbaraga nyinshi, gukoresha urumuri rwinshi, no kugabanya ubukana bwumuriro. Kongera imbaraga bivuze kongera imikoreshereze yimikorere ya chip, kandi inzira itaziguye ni ukongera ubunini bwa chip. Imashini zikoreshwa cyane zifite ingufu zingana na 1mm x 1mm, hamwe nikoreshwa rya 350mA. Kubera ubwiyongere bwimikoreshereze ikoreshwa, gukwirakwiza ubushyuhe byabaye ikibazo gikomeye. Noneho, uburyo bwa chip inversion bwakemuye ahanini iki kibazo. Hamwe niterambere rya tekinoroji ya LED, kuyikoresha murwego rwo kumurika bizahura n'amahirwe atigeze abaho.
Chip ihindagurika ni iki? Imiterere yacyo niyihe nyungu zayo?
LED yubururu LED isanzwe ikoresha Al2O3 substrates, ifite ubukana bwinshi, ubushyuhe buke bwumuriro, hamwe nu mashanyarazi. Niba imiterere isanzwe ikoreshwa, kuruhande rumwe, izazana ibibazo birwanya static, kurundi ruhande, gukwirakwiza ubushyuhe nabyo bizaba ikibazo gikomeye mubihe biri hejuru. Muri icyo gihe, kubera electrode nziza ireba hejuru, izahagarika urumuri rumwe kandi igabanye gukora neza. Amashanyarazi maremare yubururu LEDs irashobora kugera kumucyo mwinshi ukoresheje tekinoroji ya chip flip kuruta tekinoroji yo gupakira.
Inzira nyamukuru ihindagurika yimiterere nuburyo bwo kubanza gutegura ubunini bunini bwubururu LED chip hamwe na electrode ikwiye yo gusudira, kandi mugihe kimwe, tegura insimburangingo ya silicon nini cyane kuruta urumuri rwubururu LED, kandi hejuru yacyo, kora a zahabu itwara ibice byo gusudira eutectic hamwe na sisitemu yo hanze (ultrasonic zahabu wire ball ball sale). Hanyuma, amashanyarazi menshi yubururu LED yagurishijwe hamwe na silicon substrate ukoresheje ibikoresho byo gusudira eutectic.
Ikiranga iyi miterere nuko epitaxial layer ihuza byimazeyo na silicon substrate, kandi ubushyuhe bwumuriro wa silicon substrate ni munsi cyane ugereranije nubwa safiro, bityo ikibazo cyo gukwirakwiza ubushyuhe gikemutse neza. Bitewe nuko insimburangingo ya safiro ireba hejuru nyuma yo guhindukira, igahinduka ubuso busohoka, safiro iragaragara, bityo ikemura ikibazo cyo gutanga urumuri. Ibyavuzwe haruguru nubumenyi bujyanye na tekinoroji ya LED. Nizera ko hamwe n'iterambere ry'ubumenyi n'ikoranabuhanga,Amatara ya LEDbizarushaho gukora neza mugihe kizaza, kandi ubuzima bwabo bwa serivisi buzatera imbere cyane, bituzanira ibyoroshye.