Kev Tshawb Xyuas Kaum Qhov Zoo ntawm LED Backlight Tshuab

Hais txog cov nqi ntawm LED backlights thiab tsoos CCFL backlights, raws li LED backlight technology tau dhau los ua cov khoom siv niaj hnub no, nws tau lees paub los ntawm cov neeg siv rau nws qhov zoo xws li tsis muaj mercury, tsis tshua muaj zog noj, xim zoo, thiab lub neej ntev. Nyob rau tib lub sijhawm, tus nqi ntawm cov ntsuas hluav taws xob me me ntawm LED teeb tau maj mam poob rau tus nqi uas ze rau qhov ntawd ntawm CCFL backlights. Rau cov neeg siv khoom, muaj lub zog-txuag, ib puag ncig thiab phooj ywg zoo thiab cov khoom lag luam zoo ib txwm yuav yog cov neeg siv khoom txaus siab.

Nrog nws qhov tshwj xeeb thiab tsis sib xws, LED backlight thev naus laus zis tau maj mam qhia tias muaj zog zeem muag tshiab. Yog li, cia peb los saib ze zog saib yuav ua li cas LED backlight technology piv nrog CCFL backlight technology. Dab tsi yog qhov zoo ntawm LED backlight technology? Vim li cas nws thiaj li nrov nyob hauv kev ua lag luam zaub?

LED backlight thev naus laus zis: kaum qhov zoo

LED raws li qhov backlight los ntawm LCD, piv nrog tsoos backlight thev naus laus zis, ntxiv rau qhov zoo hauv cov xim gamut, muaj ntau yam tsis zoo, uas tuaj yeem muab piv rau kaum yam:

1) Lub LED backlight muaj xim zoo dua qub gamut. Nws cov xim nthuav qhia muaj zog dua li ntawm CCFL backlight, uas tuaj yeem tsim rau qhov uas tsis muaj cov kua siv lead ua kua hauv cov xov tooj ntawm cov zaub xim, thiab cov xim muaj txiaj ntsig zoo dua.

2) Lub neej ua haujlwm ntawm LED tuaj yeem ntev npaum li 100,000 teev. Txawm hais tias nws siv tas li rau 10 teev hauv ib hnub, nws tuaj yeem siv tsis tu ncua rau 27 xyoo, uas siv tau ntev rau cov kev pabcuam lub neej ntawm LCD TVs thiab tuaj yeem tau txais cov txiaj ntsig zoo dua li tshuab ntshav.

3) Lub ci ci hloov kho qhov loj yog qhov loj. Nws yog qhov yooj yim kom ua tiav LED tswj kev tswj hwm, tsis zoo li qhov ci tsawg kawg ntawm CCFL muaj qhov pib. Yog li, nws yog qhov yooj yim rau cov neeg siv kho qhov ci ci ntawm cov cuab yeej ua kom pom tseeb rau lub xeev qhov muag pom tseeb tshaj plaws, tsis hais sab nraud lossis sab hauv tsev tsaus ntuj.

4) Zoo meej txav cov duab. Tsoos CCFL teeb muaj lub flicker tsawg thiab lub teeb tso pa tawm zaus, uas yuav ua rau lub vijtsam jumps thaum ua yeeb yam scenes. Cov hluav taws xob LED rov tuaj yeem hloov kho qhov luminous zaus, thiab qhov ntau zaus ntau dua li ntawm CCFL, yog li nws tuaj yeem tuaj yeem nthuav qhia cov lus tsa suab.

5) Kev tswj hwm xim tiag tiag-lub sijhawm. Txij li liab, ntsuab thiab xiav tau taws teeb ntawm nws tus kheej, nws yog qhov yooj yim los tswj tus tam sim no cov yam ntxwv xim.

6) Adjustable backlight dawb tshuav nyiaj li cas thaum ua kom ntseeg tau tag nrho kev sib piv. Thaum tus neeg siv' s video los hloov ntawm lub khoos phis tawj thiab lub DVD player, qhov sib npaug dawb yuav muab kho tau yooj yim ntawm 9600K mus rau 6500K yam tsis muaj kev cuam tshuam lub teeb thiab qhov sib txawv.

7) Nws tuaj yeem muab cov khoom ntu thaj tsam txuas rau lub vijtsam loj. LED yog lub teeb ci tiaj tus. Chav tsev teeb pom kev yooj yim tshaj plaws yog pob xwm txheej nrog sab ntev ntawm 3 ~ 5 hli, uas tuaj yeem yooj yim ua ke los ua lub teeb ci saum npoo nrog thaj chaw uas tau xav kom ua ntej. Nws muaj qhov ci zoo rau kev hnav. Yog tias nws siv los ua lub teeb ci rov qab rau LCD TVs Qhov Chaw, qhov tsim nyog ntawm cov khoom siv kho qhov muag tau tuaj yeem ua tau yooj yim heev, thiab lub vijtsam duab teeb ci tseem zoo dua.

8) Kev Ruaj Ntseg. Lub LED siv lub zog siv hluav taws xob tsawg ntawm 5 ~ 24V, uas muaj kev nyab xeeb heev, thiab cov qauv siv ntawm lub hwj huam hluav taws xob kuj tseem yooj yim.

9) Kev tiv thaiv ib puag ncig. Qhov hluav taws xob LED qhov hluav taws xob tsis tsim hluav taws xob lossis cov tshuaj lom mob xws li mercury. Nws tuaj yeem piav qhia raws li lub teeb ntsuab thiab ib puag ncig lub teeb.

10) Anti-seismic. Lub phiaj xwm qauv tso cai rau LED kom muaj lub qauv sab hauv ruaj khov thiab kev ua haujlwm zoo seismic.

Ib qho zoo ntawm LED backlight technology: txuag hluav taws xob thiab kev tiv thaiv ib puag ncig

LED backlight yog qhov luv ntawm LightEmittingDiode (lub teeb ci ntsa iab hloov hluav taws xob), cov khoom siv hluav taws xob tuaj yeem hloov kho hluav taws xob ncaj qha mus rau lub zog hluav taws xob.

Raws li lub cim tshiab ntawm LCD backlight vaj huam sib luag, nws muaj qhov zoo tshaj plaws cov yam ntxwv ntawm kev siv hluav taws xob tsawg, lub teeb ci siab thiab lub neej ntev.

Raws li qhov backlight los ntawm LCD, CCLF (txias cathode teeb) yog lub hauv paus tseem ceeb uas tsis tuaj yeem tsis muaj yog mercury. Nov yog cov tshuaj tiv thaiv mercury, thiab cov khoom no tsis ntseeg qhov ua kom muaj teeb meem rau tib neeg lub cev.

Muab piv nrog cov teeb pom kev zoo CCFL yav dhau los, cov taws teeb rov qab LED tuaj yeem txuag hluav taws xob ntau dua 40% piv nrog CCFL backlights cov kev qhia tshwj xeeb ib yam thiab cov khoom lag luam qib siab, uas zoo heev txhim kho lub zog txuag. Tsis tas li ntawd, muaj cov mercury nyob hauv CCFL backlight yog ib yam khoom uas muaj kev phom sij rau ib puag ncig, tab sis cov hluav taws xob LED teeb tsis muaj cov khoom phom sij no, uas yog qhov zoo dua rau kev tiv thaiv ib puag ncig.

Qhov zoo thib ob ntawm LED backlight technology: nyias thiab muaj kuab heev

Cov hluav taws xob LED rov qab yog tsim los ntawm ntau cov duab hluav taws xob zoo sib luag, thiab txhua tus" daim phiaj" muaj cov khoom siv hluav taws xob LED, kom qhov kev npaj kho lub teeb pom kev zoo tuaj yeem ua tiav. Lub hom phiaj teeb ci tsis tsuas yog muaj qhov ci ci zoo kawg nkaus ntawm kev sib txawv, tab sis kuj tsis tas yuav muaj kev cuam tshuam txoj kev kho qhov muag. Nyob rau hauv txoj kev no, lub thickness ntawm lub LCD tuaj yeem ua kom sib zog dua thiab nyias dua, thaum tseem muaj kev cia siab dua thiab kev ruaj khov.

Cov tsoos CCFL yog tubular lub teeb pom kev zoo, thiab nws yuav tsum sib xyaw ua ke ntu sib xyaw kom tusyees faib lub teeb tawm los ntawm nws rau txhua qhov chaw ntawm lub vaj huam sib luag. Lub thickness ntawm lub vijtsam kuj tseem nyuaj rau kev tswj hwm, thiab nrog kev nce ntawm lub vaj huam sib luag, ntau lub teeb pom kev zoo yuav tsum tau siv, uas ntxiv kev ua rau kev nyuaj siab thiab tus nqi tsim, thiab loj-npo LCD TV yog nkag siab ntau rau qhov no. Piv txwv, rau cov khoom lag luam LCD lossis TV tshaj 50 nti, tus nqi them ncaj qha CCFL backlight modules yuav suav txog ntau dua li ib nrab ntawm tus nqi ntawm cov vaj huam sib luag.

Qhov zoo thib ob ntawm LED backlight tshuab: ultra-dav xim gamut

Cov hluav taws xob LED rov qab muaj cov yam ntxwv ntawm ntau cov teeb tsa kom pom tseeb, thiab zoo dua li CCFL backlight hais txog cov xim sib dhos. Nws tuaj yeem ua rau qhov tsis muaj cov xim teeb pom kev hauv LCD thev naus laus zis, yooj yim kom paub qhov dav xim gamut ntawm NTSC118% lossis siab dua, yog li ntawd cov LCD tso saib tau tiag tiag rov qab cov xim tiag tiag hauv qhov muaj xim zoo nkauj.

Cov tsoos CCFL backlight thev naus laus zis, vim tias cov kev txwv ntawm cov khoom siv fluorescent, lub teeb liab ua kom muaj peev xwm ntawm lub teeb lub raj muaj qhov tsis muaj zog, thiab cov xim sib xyaw ua haujlwm ntawm cov xim sib xyaw xim kuj tsis zoo. Nws tuaj yeem ua tiav NTSC 65-75% ntawm thaj chaw NTSC xim, txawm tias nws yog Los ntawm kev siv qhov CCFL teeb pom kev zoo dua, nws tsuas tuaj yeem ua tiav xim xim txog li 90% ntawm NTSC piv piv, uas cuam tshuam rau cov duab zoo.

Qhov thib plaub kom zoo ntawm LED backlight tshuab: super lub neej ntev

Qhov kev pab lub neej ntawm LED rov qab tuaj yeem ntev li 100,000 teev, txawm tias nws siv txuas ntxiv rau 10 teev hauv ib hnub, nws tuaj yeem siv txuas ntxiv mus rau 27 xyoo. Yog li, kev siv LED backlight LCD lossis LCD TV tom qab siv sijhawm ntev, qhov pom kev zoo ntawm lub teeb rov qab yog qhov zoo dua CCFL backlight.

Lub neej muaj ntawm CCFL backlights zoo nkauj yog li 25,000 teev, thiab lub neej luminous ntawm qhov tseeb qib siab kawg CCFL backlights tsuas yog 60,000 teev. Ntawm qhov kawg ntawm kev muaj sia, qhov ci ci ntawm LCD yuav tsawg dua, thiab CCFL backlight module ntawm LCD tau hloov. Lub teeb taws rov qab LED tsis muaj qhov teeb meem zoo li no txhua. Nyob rau theem no, lub neej tiag tiag kev pabcuam ntawm lub teeb dawb LED teeb yog 50,000 txog 100,000 teev, uas yog qhov tseeb ib yam li kev pab cuam lub neej ntawm LCD zaub, thiab muaj lub peev xwm rau kev txhim kho ntxiv. Txawm hais tias nws siv 24 teev nyob rau ib hnub, nws txaus rau 5 xyoo. Yog li ntawd, lub neej luminous ntawm LED backlights deb tshaj li qhov ntawm CCFL backlights.

Thib tsib zoo ntawm LED backlight technology: siab ci ci

Lub ci ci hloov kho ntawm lub LED backlight yog loj, thiab lub luminous zaus tuaj yeem hloov kho tau. Qhov ntau yog ntau dua li ntawd ntawm CCFL backlight, yog li nws tuaj yeem txig nthuav qhia cov lus tsa suab. Cov tsoos CCFL backlight teeb muaj tsawg flicker thiab luminous zaus, uas tej zaum yuav ua rau tsis pom duab thaum ua yeeb yam scenes.

Raws li qhov khoom siv passive tso tawm, cov khoom siv kua siv hluav taws xob tsis tso tawm lub teeb los ntawm nws tus kheej. Nws cia siab rau ntawm qhov backlight los ua kom dhau lub teeb los ntawm cov vaj huam sib luag zaub los tso saib cov duab nraaj. Yog li ntawd, lub tshuab backlight ncaj qha cuam tshuam rau cov duab zoo ntawm LCD TVs. Cov tsoos ua kua siv hluav taws xob tso tawm feem ntau siv txias txias cathode fluorescent yaj (CCFL) ua lub teeb ci, thiab nws yog CCFL uas ua rau cov xim ntawm cov kua siv lead ua kua tsis txaus thiab ua tsis zoo rau cov xim luam tawm.

Qhov thib rau kom zoo dua ntawm LED backlight technology: adjustable white balance

Lub LED backlight tuaj yeem hloov kho dawb seem ntawm lub backlight thaum paub tseeb tias kev sib piv tag nrho. Thaum tus neeg siv' s video los hloov ntawm lub khoos phis tawj thiab lub DVD player, qhov sib npaug dawb yuav muab kho tau yooj yim ntawm 9600K mus rau 6500K yam tsis muaj kev cuam tshuam lub teeb thiab qhov sib txawv.

Tus qauv hloov kho dawb dawb raws li RGB peb-xim LED backlight, suav nrog thaum cov zaub khiav ntawm nws tus kheej, thaum lub teeb nrig rov qab tau hloov mus rau qhov tshiab ci ntsa iab, nyeem tus nqi ntawm lub ntsuas kub ntawm lub teeb tswj hwm, yog tus nqi tiag tiag ntawm cov xim sensor tam sim no loj dua li tus qauv ntsuas, txo qhov tam sim no lub voj voog ntawm cov teeb no me ntsis. Ntawm qhov tsis sib xws, nce lub luag haujlwm tam sim no ntawm lub teeb no me ntsis. Txhawm rau kom tau txais kev tsav tsheb mus ua lub luag haujlwm tam sim no thiab tus nqi tus qauv ntawm cov xim sensor, ib qho me me cov phom suab los siv. Qhov kom zoo dua nyob rau hauv uas qhov kev hloov kho dawb dawb ntawm qhov kub ntau yog ua tiav, qhov lus teb tau zoo dua, kev siv dag zog txo, thiab qhov ua tau zoo dua.

Thib xya kom zoo dua ntawm LED backlight tshuab: ultra-siab zoo

Piv nrog rau kev teeb pom kev zoo CCFL fluorescent teeb nrig backlight, LED backlight tuaj yeem ntxiv txhim kho kev sib txawv ntawm lub teeb ci. Nrog LED txhawb rau ntau qhov chaw tswj, qhov sib piv ntawm cov zaub ntawm LED rov qab tuaj yeem ua tau ntau ntxiv mus rau qhov siab ntawm 1 lab: 1.

Txhawm rau nws yooj yim, qhov sib piv yog tib yam li tag nrho-rau / tag nrho-tawm sib piv. Nws tseem yog qhov piv ntawm qhov ci ntsa iab ntawm cov ntawv xeem thaum nws tau txais lub teeb liab-dawb mus rau lub teeb ci ntsa iab ntawm cov puv teeb liab. Kev sib txawv ntawm qhov puv-rau / puv sib piv, cov zaub yuav kho qhov ci ci ntawm lub teeb rov qab txhawm rau ua kom cov teeb pom kev ci siab dua thaum tau txais lub teeb liab dawb, thiab lub teeb ci ntsa iab tau txais lub teeb liab puv tsawg dua, thiab tom qab ntawv rau tus nqi loj dua.

Nrog kev rub ntawm LCD lag luam, kev lag luam LED backlight tau qhia txog kev muaj yeej. Nrog kev nce qib tas mus li ntawm cov qib thev naus laus zis tau qib, cov lag luam loj loj LED yog cov xav tau los txhim kho mus rau kev lag luam loj loj.

Tom qab xyoo ntawm txoj kev loj hlob, LED kev lag luam zaub tau maj mam dhau los ua neeg paub tab, thiab nws daim teb thov tau kuj tau txuas ntxiv txuas ntxiv. Raws li kev txheeb cais nyob rau xyoo tsis ntev los no, muaj ntau dua 140 lub tuam txhab nrog kev tsim tawm txhua xyoo ntawm ntau pua lab lab nyob rau hauv kev lag luam LED kev lag luam, uas muaj pov thawj tag nrho tias qhov kev lag luam nteg tawm ntawm cov lag luam LED tau coj los siv ntawm qhov sib. Los ntawm qhov pom ntawm kev ua lag luam, LED backlight thev naus laus zis muaj nws qhov zoo.