Origin M'zaka za m'ma 1960, asayansi adapanga LED potengera mfundo ya semiconductor PN junction. LED yomwe idapangidwa panthawiyo idapangidwa ndi GaASP ndipo mtundu wake wowala udali wofiira. Pambuyo pazaka pafupifupi 30 zachitukuko, timadziwa bwino LED, yomwe imatha kutulutsa zofiira, lalanje, zachikasu, zobiriwira, zabuluu ...
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