Ib, Technical txhais thiab kev lag luam benchmark ntawm backlight lifespan
Lub neej ntev ntawm LCD backlight feem ntau yog ntsuas los ntawm lub sijhawm nws siv rau qhov ci kom lwj mus rau 50% ntawm nws cov nqi pib, uas yog hu ua "ib nrab-lub neej". Raws li kev paub txog kev lag luam thiab cov ntaub ntawv xeem:
Cov neeg siv khoom qib LCD: Lub teeb rov qab lub neej ntawm cov tsev neeg zoo tib yam TV, saib, thiab lwm yam khoom siv yog kwv yees li 30000 txog 50000 teev. Yog hais tias xam raws li 8 teev ntawm kev siv txhua hnub, qhov theoretical lifespan tuaj yeem ncav cuag 10 txog 17 xyoo.
Muaj qib LCD: Cov cuab yeej kho mob, kev tswj hwm kev lag luam thiab lwm yam xwm txheej yuav tsum muaj kev ntseeg siab dua, thiab lub neej rov qab tuaj yeem txuas ntxiv mus rau 50000 txog 100000 teev, txhawb nqa 24-teev kev ua haujlwm tsis cuam tshuam rau 5 txog 10 xyoo.
Kev hloov kho qhov xwm txheej tsis zoo: Cov ntxaij vab tshaus sab nraum zoov, cov khoom siv tub rog, thiab lwm yam yuav tsum tau ua haujlwm hauv qhov kub thiab txias, cov av noo siab, lossis lub teeb pom kev zoo. Los ntawm optimizing lub tshav kub dissipation qauv thiab cov ntaub ntawv, lub backlight lub neej muaj peev xwm tshaj 100000 teev.
Nws yog ib qho tsim nyog sau cia tias lub neej ntev ntawm lub teeb pom kev zoo tsis yog qhov sib npaug rau tag nrho lub neej ntawm lub vijtsam. Lub neej ntev ntawm cov khoom xws li LCD vaj huam sib luag thiab lub voj voog tsav tsheb feem ntau yog ntev dua, tab sis kev txo qis ntawm cov teeb pom kev zoo tuaj yeem cuam tshuam rau cov neeg siv kev paub dhau los, ua rau lawv lub hom phiaj ntawm kev lag luam.
2, Qhov tseem ceeb cuam tshuam ntawm backlight lifespan
1. Cov ntaub ntawv thiab cov txheej txheem: Kev hloov pauv zoo ntawm LED Crystals
Lub hauv paus tseem ceeb ntawm backlight lifespan yog nyob rau hauv lub cev khoom ntawm LED muaju. High quality LEDs siv high -purity semiconductor cov ntaub ntawv kom ua tau zoo luminescence los ntawm precisely tswj lub recombination efficiency ntawm tus nqi nqa (electrons thiab qhov). Piv txwv li:
Thermal resistance optimization: High end LEDs txo cov siv lead ua thermal kuj, txo cov cua sov kom tsawg, thiab ncua lub teeb lwj. Ib qho kev lag luam qib LED backlight module tau txhim kho nws cov txheej txheem hluav taws xob hluav taws xob tsim hluav taws xob, txo nws cov thermal tsis kam ntawm 10℃/ W txog 5℃/ W thiab nce nws lub neej los ntawm 40%.
Nyiaj muab tshuaj txhuam thiab kub hlau txheej txheem: Cov txheej txheem ntawm cov nyiaj muab tshuaj txhuam thiab cov purity ntawm cov hlau siv hauv LED ntim ncaj qha cuam tshuam rau kev ua haujlwm ntawm kev sib kis tam sim no. Cov nyiaj tsis zoo ntawm cov tshuaj txhuam hniav yog qhov ua rau oxidation, ua rau muaj kev tiv thaiv ntau ntxiv thiab ua kom lub teeb tawg nrawm.
Cov khoom siv colloidal: Kev xa tawm thiab kev laus ua haujlwm ntawm cov khoom siv colloids cuam tshuam rau lub teeb pom kev zoo. Ib lub chaw tsim khoom siv cov khoom siv silicone tshiab los tswj lub teeb xa hluav taws xob ntau dua 90% rau LEDs tom qab 10000 teev.
2. Kev tsav tsheb tam sim no: "txoj cai kub" kom ntsuas qhov ci thiab lub neej ntev
Lub luminous siv ntawm LED yog proportional rau lub square ntawm tam sim no, tab sis ntau tshaj tam sim no yuav ua rau kom cov khoom aging. Kev lag luam kev lag luam tau pom tias:
Rated tam sim no tsim: Cov neeg siv khoom qib LCD backlights feem ntau siv tsav tam sim no ntawm 0.35A txog 0.5A, thaum cov khoom siv qib siab tuaj yeem siv tsawg li 0.2A kom ntev lawv lub neej.
Dynamic dimming thev naus laus zis: Los ntawm kev kho qhov siv tam sim no hauv lub sijhawm tiag -, nws txo qis kev siv hluav taws xob thaum ua kom pom kev ua tau zoo. Piv txwv li, ib lub chaw tsim khoom TV tau txais qhov "peak brightness enhancement + low brightness zog-txuag" hom, uas ua rau lub neej rov qab los ntawm 25%.
Kev tsav tam sim no tsis tu ncua: piv rau qhov tsav hluav taws xob, qhov tsav tam sim no tuaj yeem zam qhov cuam tshuam ntawm kev hloov pauv tam sim no ntawm LEDs. Ib qho kev sim tau pom tias qhov tsav tam sim no tuaj yeem txuas ntxiv lub neej ntawm LEDs los ntawm 30%.
3. Kev khiav hauj lwm ib puag ncig: "invisible killers" kub, av noo, thiab plua plav
Qhov cuam tshuam ntawm ib puag ncig yam ntawm backlight lifespan feem ntau underestimated, tab sis cov ntaub ntawv xeem tiag tiag qhia nws qhov tseem ceeb:
Kev kub ceev nrawm nrawm: Lub teeb tawg ntawm LED ntawm 60℃yog peb zaug ntawm 25 degree. Vim yog qhov tsim tsis xws luag hauv cov cua kub dissipation, lub neej ntev ntawm lub vijtsam sab nraum zoov raug txo los ntawm 60% hauv qhov kub thiab txias thaum lub caij ntuj sov.
Humidity yaig: Cov av noo ib puag ncig tuaj yeem ua rau LED pins rau oxidize, colloids nqus dej thiab nthuav, ua rau luv luv Circuit Court. Cov cuab yeej siv qib siab siv IP65 ntim dej kom txo tau qhov cuam tshuam ntawm cov av noo.
Plua plav tsuj roj: Cov plua plav npog lub teeb rov qab module tuaj yeem cuam tshuam cov cua sov dissipation. Qhov ntsuas kub ntawm qhov ntsuas ntsuas hauv qhov chaw khaws ntaub ntawv tau nce los ntawm 15℃vim muaj plua plav, ua rau 40% txo qis hauv kev ua neej.
4. Kev siv tus cwj pwm: "Cov ntsiab lus txiav txim siab ua tiav lossis tsis ua tiav" ntawm qhov ci ntsa iab thiab qhib / tawm zaus
Qhov cuam tshuam ntawm tus neeg siv tus cwj pwm ntawm backlight lifespan tsis tuaj yeem tsis quav ntsej:
High brightness hom: Teem lub brightness rau 100% yuav overload lub LED tam sim no. Kev ntsuam xyuas pom tau tias tom qab kev siv lub teeb ci siab tas li rau 1000 teev, lub teeb ci ntsa iab tau txo qis los ntawm 15%, thaum lub teeb ci nruab nrab (50%), nws tsuas yog txo los ntawm 5%.
Lub hwj chim nquag qhib / tawm: LEDs tau txais kev nce siab tam sim no thaum lub sijhawm pib. Ib txoj kev tshawb nrhiav tau pom tias tig lawv rau / tawm 10 zaug hauv ib hnub tuaj yeem ua rau lub neej ntev ntawm lub teeb rov qab los ntawm 20%.
Cov duab zoo li qub: Lub sijhawm ntev ntawm cov duab tib yam tuaj yeem ua rau cov kua siv lead ua kua molecules kom khov, tsim "cov duab seem" uas cuam tshuam tsis ncaj rau qhov teeb pom kev zoo.
3, Kev Ua Lag Luam Ua Lag Luam: Cov Tswv Yim Tshiab rau Kev Txhim Kho Backlight Lifespan
1. Cov khoom siv tshiab: kev hloov kho tshiab los ntawm LED muaju rau cov qauv hluav taws xob
Quantum dot technology: Npog xiav LED nrog quantum dot zaj duab xis los hloov lub teeb xiav rau hauv lub teeb liab thiab ntsuab, txhim kho lub teeb pom kev zoo thaum txo qhov kev thov tam sim no. Lub backlight efficiency ntawm quantum dot LCD TV nce mus txog 200lm / W, uas yog 40% siab dua li cov LEDs ib txwm muaj, thiab lub neej ntev mus txog 60000 teev.
Mini LED backlight: Los ntawm kev siv micrometer loj LED chips kom ua tiav cheeb tsam tswj lub teeb, nws txo qis tag nrho lub zog siv thaum txuas lub neej ntawm cov cheeb tsam hauv zos. Ib qho 85 nti Mini LED TV nta 2000 partitions thiab backlight lifespan ntawm 80000 teev.
Graphene tshav kub dissipation: Graphene yog siv rau backlight module tshav kub dab dej, thiab nws cov thermal conductivity (5300W / m · K) tso cai rau kom ceev cua kub diffusion. Ib qho kev sim pom tias graphene cua sov dissipation tuaj yeem txo qhov kub ntawm LED los ntawm 10℃thiab nce lifespan los ntawm 25%.
2. Tsav tshuab: kev tswj xyuas meej los ntawm qhov tam sim no mus rau qhov ntse tswj
AI dynamic dimming: cia li kho cov teeb pom kev zoo los ntawm kev txheeb xyuas cov ntsiab lus los ntawm kev kawm tshuab. Piv txwv li, qee lub xov tooj smartphone txo cov teeb pom kev siv hluav taws xob los ntawm 18% thiab txuas ntxiv lub neej los ntawm 15% thaum ua yeeb yaj kiab.
Ntau theem dimming Circuit Court: Faib lub teeb rov qab rau hauv ntau lub voj voog ywj pheej thiab dynamically tig rau / tawm thaj chaw raws li qhov ci ntawm daim duab. Tom qab siv cov thev naus laus zis no, kev siv hluav taws xob ntawm lub vijtsam splicing tau txo los ntawm 30%, thiab lub neej ntev tau nce mus rau 70000 teev.
Kev tiv thaiv kev tiv thaiv overcurrent: Muab cov nti saib xyuas tam sim no hauv lub voj voog tsav tsheb, uas tuaj yeem txo qhov zaus thaum lub sijhawm tam sim no tshaj qhov pib kom tsis txhob LED dhau.
3. Kev hloov pauv ib puag ncig: kev tsim kho los ntawm kev sim mus rau qhov xwm txheej huab cua
Kev ntsuas kub thiab qis qis: Kev lag luam ua qhov ntsuas kub ntawm -40℃mus rau +85℃txhawm rau txheeb xyuas qhov ruaj khov ntawm cov teeb pom kev zoo hauv qhov chaw hnyav. Tom qab dhau qhov kev xeem no, lub neej ntev ntawm ib qho kev ua tub rog tso saib tau mus txog 100000 teev.
Cov ntaub ntawv pov thawj thiab tsis muaj dej tsis zoo: txais yuav IP67 sealing tsim los tiv thaiv plua plav thiab ya raws nkag. Tom qab ua haujlwm tsis tu ncua nyob rau hauv ib puag ncig huab cua rau 3 xyoos, lub teeb ci ntsa iab ntawm qee qhov kev tshaj tawm sab nraum zoov txo qis tsuas yog 8%.
Anti UV txheej: Txheej saum npoo ntawm lub teeb pom kev zoo nrog cov khoom siv tiv thaiv UV los tiv thaiv cov khoom laus los ntawm lub hnub ncaj qha. Ib lub tsheb zaub screen tau txuas ntxiv nws lub neej mus txog 80000 teev los ntawm cov thev naus laus zis no.
