Teeb LED (Backlkit)

Backlight yog lub tswvyim txawv rau cov neeg feem ntau. Qhov thiaj li hu ua BackLight yuav tsum yog lub teeb pom kev tom qab cov kua siv lead ua kua (LCD). Nws lub teeb luminous yuav ncaj qha cuam tshuam rau qhov pom kev ntawm LCD kua siv lead ua kua tshuaj ntsuam (LCM). Cov. Cov kua siv lead ua kua tso saib nws tus kheej tsis tawm teeb. Nws teeb cov duab lossis cov cim raws li nws qhov kev hloov kho ntawm lub teeb. Txoj kev loj hlob ntawm cov backlight tuaj yeem ua keeb kwm thim rov qab rau Kev Tsov Rog Thoob Ntiaj Teb Thib Ob. Lub sijhawm ntawd, ultra-me tungsten filament teeb tau siv los ua qhov backlight ntawm aircraft cov twj paj nruag. Nov yog thawj theem ntawm kev pib txhim kho ntawm lub qab nthab. Tom qab ib nrab xyoo ntawm kev txhim kho, lub backlight tau tam sim no dhau los ua ib qho kev ywj pheej ntawm cov khoom siv hluav taws xob, thiab tau maj mam tsim txoj kev tshawb fawb thiab kev txhim kho hotspot.

Nrog cov kev txhim kho txuas ntxiv ntawm cov kua siv lead ua kua zaub thev naus laus zis, kev thov cov liaj teb ntawm cov kua siv lead ua kua, tshwj xeeb tshaj yog cov xim siv lead ua kua, tau nthuav dav ntxiv. Tsav los ntawm cov kua siv lead ua kua zaub ua lag luam, qhov kev lag luam backlight yog qhia txog qhov pom kev zoo.

Lub LCD yog cov ntsuas teeb pom kev zoo, uas yuav tsum tau siv lub teeb nrig rov qab los ua kom tiav cov zaub ua haujlwm. Kev ua tiav ntawm qhov backlight yuav ncaj qha cuam tshuam rau cov zaub zoo ntawm LCD. Tus nqi ntawm cov backlight tau tso nyiaj rau 3-5% ntawm LCD module, thiab lub zog siv hluav taws xob tso nyiaj tau 75% ntawm qhov module. Nws tuaj yeem hais tias yog ib qho tseem ceeb ntawm LCD module. Cheebtsam. High-precision, loj-loj LCDs yuav tsum raug sib phim nrog high-performance backlight technology. Yog li no, raws li LCD txoj kev lag luam sim qhib qhov chaw thov tshiab, qhov kev ua haujlwm siab dua kev siv tshuab hluav taws xob (xws li lub teeb ci siab, qis tus nqi, kev siv hluav taws xob tsawg) Nws kuj tseem ua lub luag haujlwm ntawm cov neeg tom qab. Lub teeb qaum yog qhov khoom siv hluav taws xob uas muab cov LCD vaj huam sib luag. Nws yog tsuas yog tsim ntawm lub teeb ci, lub teeb taw qhia phaj, kho qhov muag, daim duab yas, thiab lwm yam. Cov backlight muaj cov yam ntxwv ntawm siab ci, lub neej ntev thiab teeb pom kev zoo. Tam sim no muaj feem ntau yog EL,

Muaj peb hom backlight chaw, CCFL thiab LED, uas tuaj yeem muab faib ua hom sab-teeb thiab hom teeb ci ncaj qha (hom teeb ci) raws cov teeb pom kev sib faib khoom sib txawv. Raws li LCD modules txuas ntxiv txhim kho nyob rau hauv cov kev taw qhia ua lub teeb ci dua, lub teeb, thiab nyias dua, ntug teeb ntawm CCFL rov qab tau dhau los ua lub hauv paus ntawm qhov kev txhim kho backlight tam sim no. Lub electroluminescence (EL) backlight lub cev yog nyias thiab lub teeb, thiab muab cov teeb tsis sib xws. Nws lub zog siv hluav taws xob muaj tsawg heev, qhov yuav tsum ua haujlwm voltage yog 80 ～ 100Vac, qhov inverter uas muab qhov hluav taws xob ua haujlwm tuaj yeem hloov qhov kev tawm ntawm 5/12 / 24Vdc rau hauv AC cov zis. Txawm li cas los xij, cov EL backlight muaj lub neej muab kev pab tsawg (lub neej nruab nrab ntawm kev pab yog 3000-5000 teev nyob rau hauv qhov xwm txheej ntawm 50% lub ci ci, thiab lub neej kev pab yuav luv luv ntawm qhov siab dua. Yog li no, qhov zoo tagnrho inverter rau EL rov qab lub teeb pom kev zoo Cov cuab yeej tso cai rau qhov tso zis ntau dua thiab ntau zaus ntxiv nrog cov laus ntawm cov roj EL, thiaj li ua kom lub neej ntev ntawm cov teeb pom kev zoo siv EL rov qab taws teeb ci.

EL rov teeb pom kev zoo dua rau cov kev siv me me ntawm LCD siv xws li cov moos, lub rooj ua haujlwm digital thiab cov monochrome PDAs uas xav tau lub teeb pom kev tsis muaj zog heev rau kev siv nyob rau hauv lub teeb pom kev zoo lossis dim. Txawm li cas los xij, kev ua kom qis qis, tsis tshua pom kev teeb pom kev zoo, thiab lub neej luv luv ua rau nws tsis tsim nyog rau cov teeb meem rov qab cov teeb pom kev zoo xws li cov LCDs loj uas yuav tsum muaj rau cov khoos phis tawj laptop thiab cov tiaj ua vaj huam sib luag.

Qhov kev pab lub neej ntawm LED backlight tau ntev dua li EL (ntau dua 5000 teev), thiab nws siv DC voltage. Nws feem ntau yog siv rau cov lus tshaj tawm me me, xws li xov tooj, chaw taws teeb tswj lub tshuab, microwave ncu, cua txias, ntsuas cov khoom siv, lub tso suab audio, thiab lwm yam. Cov qauv ntawm LED backlight thiab CCFL backlight yog qhov zoo ib yam. Qhov txawv tseem ceeb yog LED yog qhov taw qhia lub teeb, thaum CCFL yog cov kab hluav taws xob.

Tus me txias txias cathode fluorescent teeb (CCFL) muab lub ci ci thiab lub neej (thiab lub teeb tswj lub peev xwm) yuav tsum muaj rau cov LCDs loj, uas yog vim li cas nws tseem siv feem ntau ntawm txoj kev siv rov qab rau niaj hnub no. Txawm li cas los xij, kev txuam nrog cua sov yog kev txhawj xeeb.

Lub luag haujlwm ntawm lub teeb vaj huam sib luag coj los qhia teeb lub teeb nrig qhov kev coj ua kom txhim kho qhov ci ci ntawm lub vaj huam sib luag thiab xyuas kom meej tias lub teeb vaj huam sib luag ntawm lub teeb ci. Qhov zoo zoo ntawm lub teeb taw qhia phaj tau muaj qhov cuam tshuam loj ntawm cov backlight phaj. Yog li ntawd, cov qauv siv ntawm cov kev coj ua ntawm lub teeb nyob rau hauv cov ntug teeb nrig rov qab phaj ntau lawm yog ib qho ntawm cov thev naus laus zis tseem ceeb. Lub teeb taw qhia phaj yog tsim los ntawm kev siv txhaj tshuaj molding cov tshuaj pleev rau propylene rau hauv qhov chaw du