Uyini umehluko phakathi kwe-Gob ne-COB?

Ezweni lobuchwepheshe be-LED, amagama athi GOB kanye ne-COB avame ukuxoxwa ngawo lapho kucatshangelwa amamojula e-LED asebenza kahle kakhulu ezinhlelweni ezahlukene. Lawa ma-teknoloji amabili okupakisha e-LED abalulekile ekuqinisekiseni ukuqina, ukusebenza kahle, kanye nokukhanya kwezibani ze-LED. Kodwa-ke, yize i-GOB kanye ne-COB zombili zibhekisela ezindleleni zokufaka ama-chip e-LED, ahluka kakhulu ngokwesakhiwo, izinhlelo zokusebenza, kanye nokusebenza.

A. Kuyini i-COB (i-Chip on Board)Isikrini se-LED?

I-COB (i-Chip on Board) ubuchwepheshe obusetshenziswa ukufaka ama-chip amaningi e-LED ngqo kwi-substrate ngaphandle kokupakisha okuvamile. Ku-COB LED evamile, ama-chip amaningi e-LED anamathiselwe ebhodini elilodwa noma kwi-substrate, okuvumela umklamo omncane futhi osebenza kahle. Ama-COB LED anikeza ukukhanya okuphezulu endaweni encane, okwenza abe yisisombululo esifanele sezinhlelo zokusebenza zokukhanya ezisebenza kahle kakhulu nezentengiso.

1. Isakhiwo kanye nesimiso sokusebenza:

Ku-COB LED, ama-chip e-LED ngamanye yilawa:

- Kufakwe ngqo ku-substrate: Ama-chip e-LED abekwa esisekelweni, okuvame ukuba yinto enokushisa okuhle, njenge-aluminium, ukusiza ukuqeda ukushisa ngempumelelo.

- Kuxhunywe ngogesi: Ama-chip axhunywe ngqo ebhodini, okuvumela ukugeleza kwamandla okusebenzayo kanye nokusatshalaliswa kwamandla.

- Ukuphathwa kokushisa: Ama-LED e-COB avame ukusebenzisa ama-PCB ensimbi ayinhloko (i-MCPCB), asiza ekushabalaleni kokushisa futhi athuthukise ubude besikhathi nokusebenza kahle kwama-LED.

Ubuchwepheshe be-COB buthandwa kakhulu ezinhlelweni zokusebenza zokubonisa zezentengiselwano, njengokukhangisa kwangaphakathi, ukukhangisa kwangaphandle, kanye nemihlangano, ngoba buvumela ukukhanya okuphezulu kanye nokufana kokukhanya okuhle kakhulu.

(1) Ukusebenza Kahle Kakhulu Kokukhanya: Ama-LED e-COB akhiqiza amazinga aphezulu okukhanya futhi anikeza ukukhanya okuhle kakhulu, okwenza afaneleke ekukhanyeni okukhulu.

(2) Ukuphathwa Kokushisa Okungcono: Ukufakwa ngqo kwama-chip kuma-substrate ahambisa ukushisa kuqinisekisa ukuthi ukushisa kuqedwa kahle, kunciphisa ingozi yokushisa ngokweqile futhi kuthuthukise ubude besikhathi sama-LED.

(3) Umklamo Oqinile: Ama-chip amaningi e-LED ahlanganiswe ndawonye, ​​okudala ukukhanya okuphezulu endaweni encane, okulungele izinhlelo zokusebenza ezidinga ukukhanya okunamandla, okufanayo.

(4) Ukuqina Nokuthembeka: Ama-LED e-COB avame ukuqina kakhulu kunama-LED e-SMD ngamanye, njengoba ama-chip efakwe ngokuqinile futhi angabi sengozini yokulimala ngenxa yokudlidliza noma ukushaqeka.

3. Ukungalungi kwama-LED e-COB:

(1) Izindleko Eziphakeme: Ama-LED e-COB ngokuvamile abiza kakhulu ngenxa yenqubo yokukhiqiza ethuthukisiwe kanye nezinto ezisezingeni eliphezulu ezisetshenziselwa ukuphathwa kokushisa.

(2) Ukuzivumelanisa Nezimo Okulinganiselwe: Ama-LED e-COB ngokuvamile asetshenziswa ezinhlotsheni eziqinile (njengokusethwa kokukhanya okuhleliwe) futhi awaguquguquki njengama-LED e-SMD, angafakwa kuma-PCB aguquguqukayo.

B. Kuyini i-GOB (i-Glue on Board)?

I-GOB (i-Glue on Board) ubuchwepheshe obusha bokupakisha be-LED obuthuthukisa ubuchwepheshe be-COB bendabuko ngokusebenzisa isembozo esengeziwe sokuvikela noma i-glue ku-chip ye-LED, okuthuthukisa ukuqina nokuthembeka kwe-LED. I-GOB yakhelwe ukuvimbela ukulimala kwama-chip e-LED ngenxa yezinto zangaphandle njengothuli, umswakama, nokudlidliza.

Ekusethweni kwe-GOB, ngemva kokuba ama-chip e-LED efakwe kwi-PCB (njengasekusethweni kwe-COB), ungqimba oluvikelayo lwe-epoxy noma i-silicon glue lufakwa ebusweni. Lolu ngqimba lusebenza ku:

- Vikela ama-LED chips ekulimaleni kwemvelo (uthuli, umswakama, ukugqwala).

- Thuthukisa ukuphuma kokukhanya kanye nokusebenza kahle ngokunciphisa ukumuncwa kokukhanya okungenzeka ekusethweni okusobala kakhulu.

- Khulisa ukuthembeka ngokuqinisekisa ukuthi ama-chip e-LED ahlala endaweni yawo futhi asebenza isikhathi eside, ngisho nangaphansi kwezimo ezinzima.

Iglue esetshenziswa kubuchwepheshe be-GOB nayo iyasiza ngokufana kokukhanya kanye nokuvumelana kombala, okubalulekile ezinhlelweni ezifana Izibonisi ze-LED kanye nezimpawu ezinkulu.

1. Isakhiwo kanye nesimiso sokusebenza:

- Ama-chip e-LED afakwe ku-substrate (njenge-PCB) njengasekusethweni kwe-COB okujwayelekile.

- Iglue noma i-epoxy ifakwa phezu kwama-chips ukuze iwavikele futhi iwavale, okuthuthukisa ukusebenza kwemojuli.

- Ukuvikelwa okungcono kwemvelo: I-glue yakha isithiyo esivimbela umswakama, uthuli, kanye nezinye izinto ezingcolisayo ezingase zonakalise ukusebenza kwe-chip ngokuhamba kwesikhathi.

I-GOB ivame ukusetshenziswa ezinhlelweni zokukhangisa zangaphandle nasezindaweni lapho ama-LED angase abhekane nokuchayeka ezintweni zezulu, njengezibonisi zangaphandle, izibani zasemgwaqweni, kanye nezinhlelo zokukhanyisa zezimboni eziqinile kakhulu.

2. Izinzuzo zama-LED e-GOB:

(1) Ukuqina Okuthuthukisiwe: Ingqimba yeglue evikelayo iqinisekisa ukuthi ama-chip e-LED avikeleke kangcono ezingozini zemvelo, okwenza ama-LED e-GOB afanelekele ukusetshenziswa kwangaphandle kanye nezimboni.

(2) Ukusatshalaliswa Kokukhanya Okungcono: Iglue ingasiza ekuthuthukiseni ukusatshalaliswa kokukhanya futhi inciphise ukubonakala kwamabala amnyama noma ukukhanya okungalingani, okuqinisekisa ukukhanya okufanayo.

(3) Ukumelana Nomswakama Nothuli: Ubuchwepheshe be-GOB bukhulisa ukumelana kwe-LED nomswakama, uthuli, nezinye izinto ezingcolisayo, okwandisa isikhathi sayo sokuphila futhi kuthuthukise ukusebenza ezindaweni ezinzima.

(4) Ukuthembeka Okuthuthukisiwe: Ngokuqinisa ama-chip e-LED ngeleya elivikelayo, ama-LED e-GOB awanamathuba amaningi okulimala ngamandla angaphandle angaphandle, njengokudlidliza noma ukushaqeka.

3. Ukungalungi kwama-LED e-GOB:

(1) Izindleko Eziphezulu: Njenge-COB LEDs, ama-GOB LEDs abiza kakhulu ngenxa yezinyathelo ezengeziwe zokukhiqiza nezinto ezisetshenziswa kule nqubo.

(2) Ukuzivumelanisa nezimo okulinganiselwe: Njengama-LED e-COB, ama-LED e-GOB avame ukusetshenziswa ezindaweni eziqinile futhi angase angavumelani nezimo zokusebenza eziguquguqukayo.

(3) Ukulahlekelwa Okungenzeka Kokukhanya: Ingqimba yeglue ngezinye izikhathi ingabangela ukwehla okuncane kokusebenza kokukhanya, njengoba ingase imunce ukukhanya okuthile, yize lo mphumela umuncane uma uqhathaniswa nezinzuzo.