LED yog dab tsi? Nws taws teeb khoom koj yuav txhua lub sijhawm
LEDs yog qhov txhia chaw; muaj txawm tias muaj caij nyoog zoo uas koj nyeem phau ntawv no txog LEDs los ntawm lub teeb tawm ntawm ib lossis ntau dua LEDs. Li ntawd, li cas tus heck yog ib qho LED lawm? Koj tab tom nrhiav kom paub.
LED Ntsiab Lus
LED stands rau Lub Teeb Ntawm Kev Pom Kev, Lub tshuab hluav taws xob ua los ntawm ob hom khoom siv sib txawv . Zoo ib yam li lub tswvyim rau cov khoom siv hauv semiconductor uas siv hauv ntau lub computer feem ntau, xws li RAM , processors, thiab transistors, cov duab kos yog cov khoom siv uas cia qhov khiav ntawm hluav taws xob nyob hauv ib qhov kev taw qhia xwb.
Ib qho LED ua tib qho: Nws thaiv cov ndlwg ntawm qhov hluav taws xob thaum lub sijhawm uas nws txav mus rau lwm tus. Thaum hluav taws xob nyob rau hauv daim ntawv ntawm electrons mus ncig thoob plaws ntawm ob hom ntawm semiconductor khoom, lub zog yog muab nyob rau hauv daim ntawv ntawm lub teeb.
LED Keeb Kwm
Cov credit rau tus thawj coj ntawm LED yog nyob rau Oleg Losev, tus Lavxias teb sab tus neeg tsim khoom uas pom tias nws muaj LED xyoo 1927. Nws tau siv plaub lub xyoos lawm ua ntej qhov kev tsim tau siv los siv, tab sis.
LEDs thawj pib tshwm nyob rau hauv cov ntawv luam tawm nyob rau hauv 1962, thaum Texas Instruments tau muaj ib qho LED uas tau tawm ntawm lub teeb nyob rau hauv infrared spectrum. Cov kev pib ua cov LEDs tau siv feem ntau hauv cov chaw taws teeb tswj kev lag luam, xws li cov tub taws thaum ntxov hauv TV .
Thawj pom pom LED kuj ua rau nws pom nyob rau hauv 1962, tso tawm me ntsis qaug zog tab sis pom lub teeb liab. Lwm xyoo caum yuav dhau los ua ntej qhov ci ntsa iab yuav muaj ntau ntxiv, thiab ntxiv cov xim, feem ntau daj thiab liab liab txiv kab ntxwv, tau ua muaj.
Cov LEDs coj tawm hauv xyoo 1976 nrog kev qhia txog kev ci ntsa iab thiab kev ua haujlwm siab uas yuav siv tau rau ntau yam kev siv, nrog rau kev sib txuas lus thiab kev ntsuas hauv kev ntsuas. Nws thiaj li, LEDs tau siv hauv cov cav laij leb raws li cov lus qhia txog cov zauv.
Blue, Red, Yellow, Red-Orange thiab ntsuab LED Teeb Xim
LEDs nyob rau hauv lub lig 70s thiab ntxov 80s twb tas tsuas yog ob peb xim; liab, xim daj, liab-txiv kab ntxwv, thiab ntsuab yog cov xim muaj xim zoo nkauj. Thaum nws tau ua nyob rau hauv ib txwm siv los tsim cov LEDs nrog cov xim sib txawv, tus nqi ntawm cov khoom khaws cia ntxiv rau cov xim LED xim ntawm qhov ua huab hwm coj.
Nws tau xav tias ib qho LED ua rau lub teeb nyob rau hauv cov xim xiav yuav pub LEDs siv rau xim tas nrho. Qhov kev tshawb no tau rau ib lub lag luam muag khoom xiav, uas, thaum nrog cov xim liab thiab xim daj uas twb muaj lawm, yuav tsim muaj ntau qhov xim ntawm cov xim. Thawj cov qaim teeb ci ntsa iab ua nws cov debut hauv xyoo 1994. Cov kev lag luam muaj zog thiab high-efficiency xiav LEDs tshwm sim li ob peb xyoos tom qab.
Tab sis lub tswv yim ntawm kev siv cov LEDs rau tag nrho cov duab spectrum yeej tsis tau mus dhau deb kom txog thaum lub tsim ntawm LED dawb, uas tau tshwm sim sai tom qab high-efficiency xiav LEDs tshwm.
Txawm hais tias koj yuav pom lub sij hawm LED TV lossis LED saib, feem ntau ntawm cov kev qhia no siv ib qho LCD (Kua Crystal Display) rau cov khoom pov thawj, thiab siv cov LEDs los ua kom pom cov LCDs . Tias 's tsis hais cov lus qhia tseeb uas yog LED tsis muaj nyob rau hauv kev soj ntsuam thiab TVs siv cov tshuab OLED (Organic LED) ; lawv cia li yuav tsum tau pricey thiab nyuaj los ua lag luam ntawm loj teev. Tab sis raws li kev tsim cov txheej txheem tseem mus paub tab, thiaj li LED teeb pom kev zoo.
Siv rau LEDs
LED tshuab tseem paub tab thiab muaj ntau yam kev siv rau cov LEDs twb nrhiav tau lawm, xws li:
- Cov teeb uas siv infrared uas siv los tswj cov khoom siv. Kuaj saib TV thaj chaw deb; yuav muaj yog ib qho teeb meem hluav taws xob hauv kev lag luam ntawm cov chaw taws teeb kawg.
- Cov LEDs siv los ua qhov teeb cig nyob rau hauv cov khoom siv thiab khoom siv. Nyob rau hauv ib lub sij hawm, neon thiab incandescent lights feem ntau siv. Tam sim no LEDs, uas yog txuag ntau, muaj ib lub neej ntev, thiab feem ntau tsis tshua kim, tau noj tshaj qhov kev siv no.
- Cov duab LEDs yog siv rau hauv cov ncauj lus, suav nrog cov lus qhia uas pom tau hauv txhua yam ntawm cov laij lej thaum ntxov rau cov teev, cov phiajcim advertising, thiab cov tsheb thauj mus los. Thiab tsis txhob hnov qab tias nws lub peev xwm koj lub TV thiab lub computer saib yog siv cov LEDs kom pom cov duab.
- Thiab ntawm chav kawm, peb tsis nco qab illumination; LEDs zoo rau lawv txoj kev los hloov lub teeb pom kev zoo ntawm thaij cua ntawm Thomas Edison. Raws li txoj kev, fluorescents nyob rau hauv tsev thiab chaw ua lag luam kuj pom thiab siv tsawg tsawg.
Cov LEDs yuav txuas ntxiv mus siv ntau yam khoom, thiab cov kev siv tshiab raug dov tawm txhua lub sijhawm.