Tam sim no daim ntawv thov ntawm LED yog dav heev, thiab nws kuj tau siv dav hauv kev kho kom zoo nkauj hauv tsev. Nws yog ib hom semiconductor diode. Nws yog qhov yooj yim heev rau siv. Nws tuaj yeem hloov hluav taws xob hluav taws xob mus rau hauv lub teeb lub zog thiab coj tau ntau yam txiaj ntsig rau tib neeg lub neej. Nws muaj ntau yam siv. Qhov tseem ceeb ntawm lub teeb-emitting diode yog ib nti uas muaj P-hom semiconductor thiab N-hom semiconductor. Nws muaj nws tus kheej yam ntxwv. Kev ua haujlwm voltage tsawg heev, uas txuag hluav taws xob ntau heev. Kuv vam tias nws yuav pab tau koj.
