LED (Lub Teeb Emitting Diode) Lub teeb emitting diode (LED) yog cov khoom siv hluav taws xob hauv lub xeev uas tuaj yeem hloov hluav taws xob rau hauv lub teeb pom kev. Nws tuaj yeem hloov hluav taws xob ncaj qha rau hauv lub teeb. Lub plawv ntawm LED yog semiconductor nti. Ib qho kawg ntawm cov nti yog txuas nrog lub bracket, ib qho kawg yog tus ncej tsis zoo, thiab lwm qhov kawg yog txuas nrog tus ncej zoo ntawm lub zog, kom tag nrho cov nti yog encapsulated los ntawm epoxy resin.
Semiconductor nti yog tsim los ntawm ob qhov chaw, ib qho yog p-hom semiconductor, nyob rau hauv uas lub qhov yog dominant, lwm yam yog n-hom semiconductor, nyob rau hauv uas lub electron yog dominant. Tab sis thaum ob lub semiconductors txuas nrog, ib" pn junction" yog tsim los ntawm lawv. Thaum qhov tam sim no ua rau lub nti los ntawm cov hlau, cov electrons yuav raug thawb mus rau thaj tsam p. Hauv thaj av p, cov electrons yuav sib xyaw nrog lub qhov, thiab tom qab ntawd tawm lub zog hauv daim ntawv ntawm photons. Qhov no yog lub hauv paus ntsiab lus ntawm LED luminescence. Lub wavelength ntawm lub teeb, uas yog, xim ntawm lub teeb, yog txiav txim los ntawm cov khoom tsim pn hlws ris.
Nws yog ib qho screen zaub siv los tso saib cov ntawv nyeem, duab, duab, animation, kev ua lag luam, yees duab, video signals thiab lwm yam ntaub ntawv los ntawm kev tswj cov zaub hom ntawm LED. Vim tias qhov zoo ntawm kev tswj tau yooj yim, qis-voltage DC tsav, nplua nuj xim kev ua tau zoo tom qab kev sib xyaw ua ke thiab kev pab cuam lub neej ntev, nws tau siv dav hauv cov vijtsam loj loj ntawm cov phiaj xwm hauv nroog. LED tuaj yeem siv los ua lub vijtsam zaub, nyob rau hauv kev tswj hwm ntawm lub khoos phis tawj, tso saib cov xim hloov ntawm cov yeeb yaj kiab thiab cov duab. LED yog ib qho semiconductor uas tuaj yeem hloov hluav taws xob hluav taws xob mus rau qhov pom kev pom.
