LED yog lub npe luv ntawm lightemittingdiode, Suav lub npe yog "lub teeb emitting diode". Nws yog ib qho khoom siv hluav taws xob semiconductor uas tuaj yeem hloov hluav taws xob ncaj qha rau hauv lub teeb lub zog. Cov txheej txheem kev loj hlob ntawm Jinan LED zaub tau sau tseg raws li hauv qab no. Xyoo 1955, Rubin Brownstone ntawm American Radio Company thawj zaug pom gallium arsenide (GaAs) thiab lwm yam Infrared emission ntawm semiconductor alloys.
Xyoo 1962, lub chaw soj ntsuam sib koom ua ke ntawm Monsanto, GE, thiab IBM tau tsim cov xim liab-emitting gallium arsenide phosphide (GaAsP) semiconductor compound. Txij thaum ntawd los, pom lub teeb-emitting diodes tau nkag mus rau cov txheej txheem kev lag luam.
Xyoo 1965, lub ntiaj teb thawj lub teeb-emitting diode tau yug los. Nws yog ib qho LED ua los ntawm cov khoom siv germanium uas tawm lub teeb infrared. Tus nqi tsev nyob rau lub sijhawm ntawd yog kwv yees li 45 US las. Tsis ntev los no, Hewlett-Packard thiab Monsanto tau tshaj tawm cov khoom lag luam liab LEDs ua los ntawm GaAsP cov ntaub ntawv. Qhov ua tau zoo ntawm LED no yog li ntawm 0.1 lumens ib watt, uas yog ntau dua 100 npaug qis dua li 15 lumens ib watt ntawm 60W rau 100W incandescent teeb.
Nyob rau hauv 1968, ib tug breakthrough tau tsim nyob rau hauv txoj kev loj hlob ntawm LEDs, siv ib tug nitrogen doping txheej txheem los ua GaAsP li nrog ib tug efficiency ntawm 1 lumen / watt thiab lub peev xwm los emit txiv kab ntxwv, liab thiab daj teeb.
Nyob rau xyoo 1970, vim muaj ntau daim ntawv thov ntawm LED cov khoom siv hauv tsev thiab chaw ua haujlwm, tus nqi ntawm LEDs kuj poob qis. Thaum lub sij hawm ntawd, lub lag luam tseem ceeb yog daim ntawv thov teb ntawm text display technology.
Thaum ntxov xyoo 1980s, kev sib tawg tau tsim nyob rau hauv kev txhim kho AlGaAs lub teeb-emitting diodes, uas emit liab teeb nrog ib tug luminous efficiency ntawm 10 lumens ib watt. Cov thev naus laus zis no tso cai rau cov LEDs siv rau hauv cov ntaub ntawv sab nraum zoov thiab cov khoom siv hluav taws xob siab-mounted nres lub teeb.
Xyoo 1990, kev lag luam tsim AlInGaP thev naus laus zis uas tuaj yeem muab qhov kev ua tau zoo sib npaug rau cov khoom siv liab zoo tshaj plaws, uas yog 10 npaug siab dua qhov kev ua tau zoo ntawm tus qauv GaAsP ntaus ntawv thaum lub sijhawm ntawd.
Tom qab lub xyoo pua 21st, cov kev tswj hwm tau nkag mus rau theem ntawm kev loj hlob sai, qib grey tuaj yeem siab li 16 ntsis, thiab cov duab theem tau dhau los ua ntau dua; nyob rau hauv cov nqe lus ntawm cov teeb liab kis tau tus mob, los ntawm thawj yooj yim analog kev sib txuas lus txoj kev mus rau lub tam sim no real-time digital teeb liab kis tau tus mob nyob deb nroog, cov zaub Lub vijtsam tuaj yeem tso saib cov duab siab; nyob rau hauv cov nqe lus ntawm refresh npaum li cas, qhov refresh npaum li cas los ntawm thawj kaum ntawm hertz mus rau tam sim no siab li ntau txhiab tus hertz ua rau lub vijtsam duab ruaj khov thiab tsim nyog rau kev tua nrog ntau yam khoom siv duab. Cov kev tswj hwm tau pib ua lag luam, thiab cov tuam txhab high-tech tshwj xeeb hauv kev tshawb fawb thiab kev tsim kho thiab kev muag khoom ntawm kev tswj hwm tau tshwm sim. Raws li kev sib tw ntawm kev ua lag luam, kev ua tau zoo ntawm kev tswj hwm tau raug txhim kho tas li nrog kev nce ntawm cov neeg siv khoom xav tau.
