Kev thov cov lus teb kev paub txog cov teeb me me Cov kab teeb tsa thiab cov ntsiab lus kev paub ntawm LCD backlight panels

Kev faib tawm thiab ntsiab lus kev paub ntawm LCD backlight panels

Cov backlight yog qhov khoom siv kho qhov muag uas muab qhov pom rov qab rau hauv LCD cov khoom lag luam. Txij li cov kua siv lead ua kua iav nws tus kheej tsis muaj cov yam ntxwv ua kom pom kev, lub teeb ci ntsa iab, uas yog, phaj rov qab, ntxiv tom qab cov kua siv lead ua kua iav raws li xav tau. Cov peev txheej ntawm daim ntawv thov suav nrog kev kho mob, kev zoo nkauj, ntsuas khoom siv, khoom siv hauv tsheb, khoom siv khoom lag luam, chaw txhab nyiaj, chaw ua haujlwm automation, kev sib txuas lus, khoom siv hluav taws xob thiab khoom siv lag luam

Tus txheej txheem ua haujlwm ntawm pawg thawj coj saib backlight:

Tus txheej txheem ua haujlwm ntawm LED backlight vaj huam sib luag yog tig los taw tes lub teeb taw qhia (LED) rau hauv qhov chaw sab teeb (teeb pom kev ua haujlwm sab nraum zoov, qhov chaw taws teeb rov qab)

Kev faib tawm Backlight vaj huam sib luag:

Cov backlight vaj huam sib luag tau muab faib ua peb hom backlight panels: EL, CCFL, thiab LED raws li hom teeb ci. Raws li qhov chaw nyob ntawm hom teeb ci, lawv muab faib ua hom teeb ci sab thiab qhov ncaj qha hom (hom teeb nrig).

Cov hauv qab no yog cov lus qhia luv luv ntawm lawv:

◆ ntug teeb lub teeb: lub teeb nrig sab nraub qaum ua los ntawm teeb tsa cov kab teeb ci lossis teeb pom kev nyob rau sab ntawm daim phiaj qhia tshwj xeeb teeb pom kev zoo. Raws li cov kev xav tau ntawm kev siv tiag tiag, nws tuaj yeem tsim ua ob sab lossis ib qho peb-sab. Lub teeb rov qab tua teeb feem ntau tuaj yeem ua tau nyias heev, tab sis cov teeb kev siv ntawm lub teeb pom kev yog qhov me me, thiab cov duab hluav taws xob me dua, qhov siv hluav taws xob me me, txog 50%. Lub hauv paus tseem ceeb ntawm nws cov thev naus laus zis yog qhov tsim qauv thiab tsim tawm ntawm cov paib coj teeb. Feem ntau siv ntug teeb hom yog LED backlight thiab CCFL backlight.

◆ LED teeb rov qab: LED teeb ci tseem hu ua lub teeb ci. Piv nrog rau lwm cov teeb pom kev, lub zog ntawm kev siv hluav taws xob ntawm ib qho LED teeb me me heev. Los ntawm xiav rau xim liab, LED teeb tuaj nyob rau hauv ntau xim, xws li" Rooj 1" thiab" Rooj ntawv 2" ;; kuj tseem muaj xim tshwj xeeb uas yog xim dawb." Rooj ntawv 3" muab cov feem ntau siv rau chromaticity ntau. Hauv ntau cov xim, nws muaj peev xwm raug faib ua ob hom: lub ntsiab thiab qhov ci tsawg: Yeej," rooj 1" belongs rau qhov ci qis (txawm hais tias amber, txiv kab ntxwv thiab xim liab kuj yog me ntsis ci dua)," rooj Ob" thiab" rooj ntawv peb" tseem ceeb.

Vim tias cov xim dawb yog cov xim sib xyaw, tsis muaj qhov yuav qhia tau qhov tseem ceeb wavelength, yog li nws yog sawv cev los ntawm nws qhov kev sib koom tes ntawm daim duab chromaticity daim duab. Peb hloov kho nws raws li" txias dawb" thiab" sov dawb" ;. Hauv ntau cov xim, muaj qhov teeb meem ntawm qhov tsis sib txawv xim. Ntawm lawv, xiav thiab dawb yog pom tseeb, tshwj xeeb tshaj yog dawb. Tam sim no LED cov khoom xa tuaj yeem' t zoo tswj nws.

◆ CCFL backlight: Qhov txiaj ntsig zoo ntawm qhov hom ntawm lub teeb nrig no yog qhov siab ci, yog li thaj chaw loj dub thiab dawb theem tsis zoo, xiav hom tsis pom theem thiab xim kua siv lead ua cov khoom siv yeej siv nws. Hauv txoj kev xav, nws tuaj yeem ua ntau yam xim raws cov qauv xim txuam ntawm peb lub xim xim. Qhov tsis zoo yog tias nws siv ntau lub zog, nws xav tau inverter Circuit Court tsav, thiab kev khiav hauj lwm kub yog nqaim, nruab nrab ntawm 060 degrees, thiab lwm lub rooj zaum backlight xws li LEDs tuaj yeem ncav cuag-2070.

◆ Backlight yam: Nws yog lub teeb tiaj tiaj tiaj lub teeb nrog cov qauv tsim, uas tuaj yeem ua lub teeb nruam thiab tsis zoo ntawm cov teeb ci, xws li EL lossis teeb lub teeb fluorescent; nws kuj tseem tuaj yeem ua ke ntawm ntau cov taw tes lub teeb, xws li dot matrix LED lossis lub teeb pom kev zoo. Backlight board, thiab lwm yam. Cov kev siv dav dav yog LED dot matrix thiab EL backlight.

Back EL backlight: electroluminescence, lub teeb txias uas muaj kev cia siab rau qhov kev tso siab ntawm cov phosphors zoo siab los ntawm kev hloov hluav taws xob. Nws qhov txiaj ntsig zoo yog tias nws yuag thiab tuaj yeem ua tiav tuab ntawm 0.20.6mm. Qhov tsis zoo yog qhov tsis tshua pom kev, lub neej luv (feem ntau 30005000 teev), inverter tsav yog qhov yuav tsum tau, thiab flicker, suab nrov thiab lwm yam tsis xws yuav tshwm sim vim kev cuam tshuam hauv Circuit Court. Muaj ob hom EL tsav tsheb: inverter thiab Tsav Tsheb IC.

Vim tias qhov ntau zaus thiab tso zis hluav taws xob ntawm qhov tsav tsheb IC tam sim no tsis tuaj yeem ncav cuag cov xwm txheej li qub ntawm EL (400Hz, AC100V), qhov ci ci qis dua qhov ntsuas ntawm lub zog inverter. Tsis ntev tas los no, lub teeb dawb (puv xim) EL thiab LCD backlight panels tseem tau tawm los. Txawm li cas los xij, vim tias qhov ci qis, nws yog qhov pib siv rau me me LCD pom hauv qab 4 ntiv tes. Xws li: lub xov tooj ntawm tes, PDAs, kev ua si sab nraud, thiab lwm yam Puv xim (lub teeb dawb), cov loj-loj dua cov teeb pom kev zoo rov qab, thiab tam sim no lub ntsiab tseem siv CCFL ua lub teeb ci.

Bottom LED hauv qab lub teeb nrig: qhov zoo yog qhov ci zoo thiab teeb tsa zoo. Qhov tsis zoo yog tias lub thickness yog loj (ntau dua 4.0mm), cov lej ntawm LED siv tau yog qhov loj heev, thiab cov cua kub tshwm sim yog pom tseeb. Feem ntau siv cov xim qis qis rau kev tsim, thaum lub teeb xim siab yog qhov tsis suav tias yog vim tus nqi siab.