LED ke eng?

Batho ba utloisisa tsebo ea motheo ea hore lisebelisoa tsa semiconductor li ka hlahisa leseli lilemong tse 50 tse fetileng.Ka 1962, Nick Holonyak Jr. oa General Electric Company o ile a hlahisa ts'ebeliso ea pele e sebetsang ea li-diode tse bonahalang tse hlahisang leseli.

LED ke khutsufatso ea Senyesemane khanya emitting diode, sebopeho lona motheo ke sengoathoana sa electroluminescent semiconductor lintho tse bonahalang, beha holim'a raka, 'me joale tiisitsoe ka epoxy resin ho pota-pota, ke hore, encapsulation tiileng, kahoo e ka sireletsa ka hare konokono terata, kahoo LED e na le ts'ebetso e ntle ea seismic.

Lintlha tse kholo tsa AIOT li lumela hore qalong li-LED li ne li sebelisoa e le mehloli ea leseli la lisebelisoa bakeng sa lisebelisoa le limithara, 'me hamorao li-LED tsa mebala e sa tšoaneng e khanyang li ne li sebelisoa haholo maboneng a mabone a sephethephethe le li-skrini tsa libaka tse kholo, tse hlahisang melemo e metle ea moruo le ea sechaba.Nka mohlala oa lebone le lefubelu la lisenthimithara tse 12.United States, lebone la nako e telele le le sa sebetseng hantle la li-watt tse 140 qalong le ne le sebelisoa e le mohloli oa leseli, le hlahisang li-lumens tse 2000 tsa khanya e tšoeu.Ka mor'a ho feta ka har'a sefe e khubelu, tahlehelo ea leseli ke 90%, e siea feela 200 lumens ea leseli le khubelu.Ka lebone le sa tsoa etsoa, ​​​​k'hamphani e sebelisa mehloli e 18 e khubelu ea leseli la LED, ho kenyelletsa le tahlehelo ea potoloho, kakaretso ea li-watts tsa 14 tsa tšebeliso ea matla, e ka hlahisa phello e tšoanang ea leseli.Mabone a matšoao a likoloi le ona ke karolo ea bohlokoa ea lisebelisoa tsa mohloli oa leseli la LED.

Molao-motheo oa LED

LED (Light Emitting Diode), ke sesebelisoa sa semiconductor se tiileng se ka fetolang motlakase ka ho toba leseli.Pelo ea LED ke semiconductor chip, ntlha e le 'ngoe ea chip e khomaretsoe ho tšehetso, ntlha e' ngoe ke palo e mpe, 'me qetello e' ngoe e hokahane le palo e ntle ea phepelo ea matla, e le hore chip eohle e kenngoe. ka epoxy resin.The semiconductor semiconductor e entsoe ka likarolo tse peli, karolo e le 'ngoe ke semiconductor ea mofuta oa P, eo ho eona likoti li laolang,' me qetellong e 'ngoe ke semiconductor ea mofuta oa N, eo haholo-holo e leng li-electrone.

Empa ha li-semiconductors tsena tse peli li kopantsoe, "PN junction" e thehoa pakeng tsa tsona.Ha hona joale ho sebetsa ka chip ka terata, lielektrone li tla sutumelletsoa sebakeng sa P, moo lielektrone le masoba li kopanang hape, ebe li ntša matla ka mokhoa oa photon.Ena ke molao-motheo oa tlhahiso ea leseli la LED.Bophahamo ba maqhubu a khanya le bona ke 'mala oa leseli, o khethiloeng ke thepa e etsang "PN junction".


Nako ea poso: Aug-27-2021
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