1907  Masanin kimiyya dan kasar Burtaniya Henry Joseph Round ya gano cewa ana iya samun haske a cikin lu'ulu'u na siliki carbide lokacin da ake amfani da halin yanzu.

1927  Masanin kimiyya na Rasha Oleg Lossew ya sake lura da "Tasirin Zagaye" na fitar da haske.Sannan ya bincika ya kuma bayyana wannan lamari dalla-dalla

1935 Masanin kimiyya na Faransa Georges Destriau ya wallafa wani rahoto game da al'amuran zaɓe-luminescence na zinc sulfide foda.Don tunawa da magabata, ya kira wannan sakamako "Lossew haske" kuma ya ba da shawarar kalmar "zaɓi-luminescence sabon abu" a yau.

1950  Haɓaka ilimin lissafi na semiconductor a farkon shekarun 1950 ya ba da bincike na tushen ka'idar don abubuwan masu zaɓe-na gani, yayin da masana'antar semiconductor ta ba da tsarkakakken wafers na semiconductor don bincike na LED.

1962  Nick Holon yak, Jr. da SF Bevacqua na Kamfanin GF sun yi amfani da kayan GaAsP don yin diodes masu fitar da haske.Wannan ita ce LED ɗin haske na farko da ake iya gani, wanda ake ɗauka a matsayin kakan LED na zamani

1965  Ciniki na infrared haske mai fitar da LED, da kuma sayar da jajayen phosphorous gallium arsenide LED nan ba da jimawa ba.

1968  LEDs gallium arsenide-doped Nitrogen sun bayyana

1970s  Akwai gallium phosphate green LEDs da silicon carbide yellow LEDs.Gabatarwar sabbin kayan yana inganta ingantaccen haske na LEDs kuma yana faɗaɗa haske mai haske na LEDs zuwa orange, rawaya da haske kore.

1993  Nakamura Shuji na Kamfanin Nichia Chemical Company da sauransu sun haɓaka LED gallium nitride mai haske na farko, sannan suka yi amfani da indium gallium nitride semiconductor don samar da hasken ultraviolet, shuɗi da koren LEDs, ta amfani da aluminum gallium indium phosphide Semiconductor ya samar da manyan LEDs ja da rawaya.An kuma kera farar ledodi.

1999  Kasuwancin LEDs tare da ikon fitarwa har zuwa 1W

A halin yanzu Masana'antar LED ta duniya tana da hanyoyin fasaha guda uku.Na farko ita ce hanyar sapphire da Nichia ta Japan ke wakilta.A halin yanzu ita ce fasahar da aka fi amfani da ita kuma mafi girma, amma rashin amfaninta shine ba za a iya yin ta da girma ba.Na biyu ita ce hanyar fasaha ta LED substrate silicon carbide wanda Kamfanin CREE na Amurka ke wakilta.Kyakkyawan kayan abu yana da kyau, amma farashin kayan sa yana da girma kuma yana da wuya a cimma babban girman.Na uku shine fasahar LED ɗin silicon substrate LED wanda China Jingneng Optoelectronics ta ƙirƙira, wanda ke da fa'idodin ƙarancin farashi, aiki mai kyau, da manyan masana'anta.