1, cov khoom siv yooj yim ntawm cov backlit screen
Lub vijtsam backlit, raws li lub npe qhia, yog lub cuab yeej uas muab lub teeb pom kev tom qab cov tshuaj ntsuam. Hauv LCD cov ntxaij vab tshaus, lub backlight module yog qhov tsis tseem ceeb, uas feem ntau yog muaj cov txheej txheem hauv qab no:
Qhov Chaw Ntsuas Lub Teeb: Qhov no yog qhov tseem ceeb ntawm Backlight Module, lub luag haujlwm rau kev tsim lub teeb. Tsoos teeb pom kev suav nrog cov ntoo khaub thuas cathodescent teeb (CCFLS) thiab lub teeb qhib diodes (coj). Nyob rau hauv xyoo tsis ntev los no, nrog kev nce qib ntawm thev naus laus zis, LED tau dhau los ua cov ntxaij vab tshaus rau backlit cov ntxaij vim nws cov peev txheej siab, thiab siv zog ntev.
Lub Teeb Qhia Lub Phaj: txoj haujlwm ntawm lub teeb kev qhia phaj yog los hloov cov teeb pom kev mus rau saum npoo av, kom pom tseeb tias lub teeb ci ntsa iab tom qab lub vijtsam lcd. Lub teeb pom kev los ntawm cov teeb pom kev zoo yog tawg thiab ua los ntawm micrteructure thiab pib ua kom pom qhov tseeb ntawm lub ntsej muag ntawm lub vijtsam nraub qaum.
Refantive Sheet: Daim ntawv qhia txog lub teeb Phaj thiab yog siv los qhia txog lub teeb pom kev, txhim kho kev siv lub teeb, thiab txhim kho qhov ci ci ntawm lub vijtsam.
Diffusion zaj duab xis thiab kev ua yeeb yaj kiab txhim kho: diffusion zaj duab xis yog siv los txuas ntxiv lub teeb, txo cov teeb ci thiab ci ntsa iab, thiab txhim kho kev hnav khaub ncaws ntawm daim duab. Brightening zaj duab xis (tseem hu ua prism daim ntawv) nce npo ci ntsa iab thiab sib piv los ntawm kev tsom iav.
2, lub puab tsaig luminous ntawm backlit cov ntxaij vab tshaus
Lub puab tsaig ntawm cov kab mob ntawm backlit feem ntau nyob ntawm cov txheej txheem finescence ntawm lawv cov chaw teeb tsa. Kev coj ua raws li ib qho piv txwv, LED yog cov khoom siv hluav taws xob semiconductor. Thaum cov tam sim no hla dhau, hluav taws xob thiab cov kev ua tsis taus ntawm cov kev sib tshuam ntawm cov khoom siv semiconductor, tso lub zog. Lub zog no yog rureiated nyob rau hauv daim ntawv ntawm photons, ua lub teeb pom kev.
Hauv cov ntxaij vab tshaus backlit, coj cov teeb pom kev yog ib txwm tau npaj nyob rau hauv daim ntawv ntawm lub teeb ib tog lossis dots, thiab yog qhov tseeb tswj tau los ntawm kev tsav tsheb. Lub teeb emitted los ntawm cov LED yog kis thiab tawg los ntawm lub teeb cov ntawv qhia phaj kom tau ib lub qhov teeb pom kev zoo sib xws, taws teeb lub lcd npo. Lub lcd npo nws tus kheej tsis emit teeb, tab sis tswj txoj kev teeb ci los ntawm kev npaj ua kua crystal molecules kom ua tiav cov duab zaub.
3, Dimming txoj kev rau Backlit Screens
Lub ci ci hloov kho ntawm cov ntxaij vab tshaus backlit yog ib txwm ua tiav los ntawm kev txom nyem. Cov txheej txheem tsis txaus ntseeg suav nrog DC Dimming thiab PWM Dimming.
DC Dimming: DC Dimming hloov kho lub teeb ci los ntawm kev hloov pauv tam sim no ntws los ntawm LED. Qhov siab dua tam sim no, lub teeb ci ntsa iab los ntawm cov LED; Ntawm qhov tsis sib xws, qhov me dua qhov tam sim no, tus tsaus nti lub teeb. DC Dimming muaj qhov zoo ntawm kev hloov kho dav dav thiab zoo ci ci linearity, tab sis nws yuav muaj qee yam cuam tshuam rau lub neej ntawm LED.
PWM Dimming: PWM Dimming hloov kho lub teeb ci los ntawm kev hloov pauv qhov ntau zaus ntawm LED. Nyob rau hauv ib nyuag dimming, lub LED ua haujlwm nyob rau hauv qee lub sijhawm ua haujlwm (piv txwv li cov piv ntawm-sijhawm rau lub sijhawm ua kom tiav). Lub luag haujlwm voj voog ua voj voog, siab dua qhov nruab nrab ci ntawm LED; Ntawm qhov tsis sib xws, qis dua lub luag haujlwm voj voog, qis dua qhov nruab nrab ci. PWM Dimming muaj qhov zoo ntawm cov lus teb nrawm nrawm thiab tsawg kawg nkaus cuam tshuam rau LED LIFESTORS, tab sis flickering yuav tshwm sim ntawm qib qis.
4, thev naus laus zis thev naus laus zis ntawm cov ntxaij vab tshaus backlit
Backlight Vijtsam Teac technology txuas ntxiv mus ua ntej nrog kev txhim kho hluav taws xob thev naus laus zis. Los ntawm thaum ntxov CCFl Backlighting rau tam sim no LED Backlighting, thiab mus rau yav tom ntej miniled tau coj kev ua haujlwm tseem ceeb thiab lub zog kev txo qis.
CCFL Backlight: CCFL Backlight tau siv dav hauv LCD cov lus qhia thiab TV. Txawm li cas los xij, vim nws cov shortcomings xws li tsis muaj kev ua tau zoo xim, thiab muaj sia tsawg, nws tau hloov zuj zus los ntawm LED backlighting.
LED Backlight: LED Backlight tau sai dhau los ua cov ntxaij vab tshaus tau sai sai, kev siv hluav taws xob ntau, kav ntev lifespan, thiab xim nplua nuj. LED Backlight tsis tsuas yog txhim kho kev ci ntsa iab thiab sib txawv, tab sis kuj tseem ua tiav cov xim dav hlau gamut thiab ntau dua cov xim txawv txav.
Miniled thiab microled backlights: miniled thiab microroled backlighting yog cov thev naus laus zis tshiab uas tau tshwm sim nyob rau hauv xyoo tas los no. Miniled Backlight siv me LED BEADS kom ua tiav qhov kaj dua siab dua thiab sib piv, nrog rau kev ua kom zoo nkauj ua kom muaj peev xwm. Microled Backlight mus ntxiv los ntawm kev ua ke coj mus ua raws li cov tshuaj pleev zaub mov ncaj qha rau cov zaub pom kev, ua tiav qhov tseeb pixel qib nplooj ntoos teeb thiab tswj. Cov thev naus laus zis tshiab yuav ntxiv txhim kho cov zaub ua haujlwm thiab lub zog txuag ntawm cov ntxaij vab tshaus backlit.
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