Koj tau pom lawv txhua qhov chaw: daim ntawv tshaj tawm loj tshaj tawm hauv Times Square, lub vijtsam nkhaus ntawm kev hais kwv txhiaj, cov duab zoo nkauj hauv lub tsev tos qhua. Tab sis yuav ua li cas thaum koj lub vijtsam LED tshiab pib flickering tom qab peb lub hlis, lossis zoo li ntxuav tawm hauv qab hnub ci? Feem ntau, cov hauv paus ntsiab lus yog xaiv qhov tsis ncaj ncees lawmcoj zaub manufacturers.
Phau ntawv qhia no qhia koj txog qhov xwm txheej ntawm lub ntiaj teb tiag tiag, cov teeb meem uas tib neeg ntsib, thiab kev daws teeb meem ib ntus los nrhiav cov chaw tsim khoom uas koj tuaj yeem ntseeg tau. Tsis muaj jargon-hnyav fluff - tsuas yog hais lus yooj yim thiab ib lub rooj ua ke kom paub meej.
1. Tej yam xwm txheej uas koj xav tau ib lub chaw tsim khoom LED zaub
LED zaub muaj nyob txhua qhov chaw, tab sis txhua qhov xwm txheej muaj nws tus kheej xav tau. Nkag siab txog koj cov ntaub ntawv siv yog thawj kauj ruam mus xaiv tus khub zoo.
1.1 Kev Tshaj Tawm Sab Nraud & Cov Khw Muag Khoom Muag
Xav txog lub vijtsam loj tshaj ntawm txoj kev tsis khoom lossis lub qhov muag pom kev pom sab nraum lub khw muag tshuaj yej npuas. Cov no xav tausiab brightness(sunlight nyeem tau),huab cua tsis kam, thiab feem ntauqhov ntau thiab tsawg. Rau tej yaam num zoo li no, koj yuav xav tau ibkev cai coj zaub chaw tsim tshuaj paus rau sab nraum zoov advertisinguas tuaj yeem txiav qhov loj thiab cov duab rau koj lub tsev facade.
1.2 Cov Txheej Txheem Txheej Txheem & Xa Khoom Muag
Concerts, rooj sib tham, kab tshoob kev kos - cov ntxaij vab tshaus theem tau sib sau ua ke thiab tawg sai sai. Cov khoom siv sib sib zog nqus, cov cuab yeej-tsawg sib dhos, thiab cov duab zoo tshaj plaws yog tsis sib tham. Azoo tshaj plaws coj zaub chaw tsim tshuaj paus rau theem xaujyuav muab cov chav tsev xauj tsev uas ntim ceev ceev thiab muaj sia nyob mus ib txhis.
1.3 Chav Sib Tham & Chaw Tswj Xyuas
Nyob rau hauv ib lub koom haum boardroom los yog lub nroog soj ntsuam hub, cov neeg zaum nyob ze ntawm lub screen. Qhov ntawd txhais tau tiaszoo pixel suab(me me qhov sib txawv ntawm LEDs) thiabtsawg refresh tus nqi artifacts(tsis muaj flicker ntawm lub koob yees duab). Rau cov cheeb tsam rhiab heev, koj xav tau ame me pitch coj zaub chaw tsim tshuaj paus rau chav tswjuas specializes nyob rau hauv displayable los ntawm ob peb ko taw deb.
2. Cov ntsiab lus mob: Yuav ua li cas yuam kev thaum koj xaiv qhov chaw tsim khoom tsis raug
Cov duab tsis zoo yuav tsis ua rau ntsiag to. Nov yog cov teeb meem nquag tshaj plaws uas tib neeg khiav mus rau hauv - thiab lawv txhua tus taug qab rov qab mus rau cov chaw tsim khoom xaiv.
Tsis sib xws brightness / xim: Panels los ntawm tib batch zoo sib txawv. Ib qho module yog xiav, lwm qhov yog yellowish.
Tuag pixels tom qab ob peb lub hlis: Ib pixel (ib qho LED dot) nres teeb pom kev. Nyob rau tib lub sijhawm, koj tau txais "constellation" ntawm qhov tsaus ntuj.
Dej puas sab nraum zoov: Lub vijtsam tsis yog dej tsis txaus. Tom qab thawj los nag, noo noo nkag rau hauv thiab corrodes cov circuits.
Kev them nyiaj yug tsis zoo tom qab muag: Cov chaw tsim khoom mus ntsiag to thaum koj xav tau cov khoom seem lossis cov lus qhia kho. Qhov no yog vim li cas thiaj nrhiav tau ib qhocoj zaub chaw tsim tshuaj paus nrog zoo tom qab-muag kev pab cuamyog qhov tseem ceeb.
Flickering ntawm lub koob yees duab: Ntawm cov xwm txheej, kev kaw cov yeeb yaj kiab qhia cov kab kab rov tav tsis zoo - tshwm sim los ntawm tus nqi qis dua.
Hauv qab no yog cov lus qhia ceev uas qhia txog cov teeb meem no thiab lawv qhov cuam tshuam tiag tiag.
| Teeb meem | Yam Koj Pom / Xav | Lub Sij Hawm Ntev |
|---|---|---|
| Xim tsis sib xws | Cov xim tsis sib xws ntawm cov modules | Tsis zoo saib, hom kev puas tsuaj |
| Tuag pixels | Me me dub dots (los yog ib txwm-on dots) | Kev cuam tshuam, tshwj xeeb tshaj yog ntawm cov ntxaij vab tshaus zoo |
| Dej ingress | Ib nrab lossis tag nrho ua tsis tiav tom qab los nag | Kev kho kim kim lossis hloov tag nrho |
| Tsis muaj cov khoom seem | Tsis tuaj yeem kho cov khoom tawg tom qab 1 xyoos | Tag nrho cov zaub yuav siv tsis tau |
| Flicker ntawm video | Kab rov tav bands ntawm TV / nyob kwj | Siv tsis tau rau kev tshaj tawm lossis cov xwm txheej |
3. Kev daws teeb meem: Yuav ua li cas xaiv ib lub chaw tsim khoom lag luam uas ntseeg siab LED
Tam sim no cov xov xwm zoo - koj tuaj yeem zam yuav luag tag nrho cov teeb meem no los ntawm kev ua raws li daim ntawv txheeb xyuas yooj yim thaum ntsuas cov tuam txhab.
3.1 Nrhiav Cov Ntawv Pov Thawj Tiag Tiag, Tsis Yog Cov Ntawv Qhia
Tsis txhob ntseeg glossy catalog ib leeg. Nug rau:
Lub Hoobkas ncig saib(los yog hu xov tooj nyob video los ntawm cov kab ntau lawm)
Cov ntaub ntawvlos ntawm cov neeg siv khoom uas muaj cov xwm txheej zoo sib xws (sab nraum zoov, xauj tsev, suab zoo, thiab lwm yam)
Cov ntawv pov thawj- CE, RoHS, FCC, thiab tshwj xeebKev ntsuas IP(Ingress Protection, xws li IP65 txhais tau hais tias plua plav-nruj thiab tiv thaiv cov dav hlau dej uas tsis tshua muaj siab)
3.2 Ntsuam xyuas Kev Pabcuam Tomqab Muag Ua ntej yuav
A txhim khu kev qha coj zaub chaw tsim tshuaj pausyuav teb cov lus nug hauv 24 teev - txawm tias ua ntej koj xaj xaj. Xa lawv email nug txog qhov khoom seem module muaj thiab cov lus lav. Yog tias lawv qeeb lossis tsis meej, hla lawv tawm ntawm koj daim ntawv teev npe.
3.3 Xav tau daim ntawv qhia tshwj xeeb meej
Tsis txhob khom rau "siab ci" lossis "kev txuag hluav taws xob." Tau cov lej:
Pixel suab- nrug nruab nrab ntawm LED chaw (hauv mm). Cov suab me me=cov duab zoo dua rau kev saib ze.
Refresh tus nqi- yuav tsum loj dua lossis sib npaug rau 1920Hz rau tsis muaj lub koob yees duab flicker. Rau theem xauj tsev, nug 3840Hz.
Brightness- Sab nraum zoov xav tau ntau dua lossis sib npaug li 5500 nits (ib chav tsev ntawm luminance); sab hauv tsev Ntau dua lossis sib npaug li 1000 nits yog txaus.
Module loj thiab cov khoom txee- tuag-cast aluminium yog sib dua thiab meej dua rau kev xauj.
3.4 Nug Txog "Dead Pixel Policy"
Txhua tus neeg tsim khoom muaj ib qho. Cov neeg zoo cog lus:
Zero tuag pixels thaum xa khoom
Dawb hloov modules nyob rau hauv thawj xyoo yog tias tuag pixels tshaj ib tug me me pib (piv txwv li, 3 tuag pixels ib 10,000)
4. Cov ntsiab lus tseem ceeb tau txhais (Yog li koj hais tib yam lus)
Ua ntej koj hu ib yamcoj zaub manufacturers, tau paub txog cov ntsiab lus yooj yim no. Lawv yuav pab koj nug cov lus nug uas yog.
Pixel Pitch
Qhov kev ncua deb ntawm qhov nruab nrab ntawm ib pawg LED mus rau lwm qhov. Cov suab me me (piv txwv li, P1.5=1.5 hli) txhais tau tias cov duab denser, sharper - zoo tagnrho rau chav sib tham. Lub suab loj dua (piv txwv li, P10) yog rau cov ntawv tshaj tawm pom nyob deb.
Refresh Rate
Muaj pes tsawg zaus hauv ib ob qhov screen redraws daim duab. Tsawg refresh tus nqi (xws li 60Hz) ua rau cov zaub flicker ntawm lub koob yees duab. Theem thiab TV studios xav tau 1920Hz lossis siab dua.
Kev Ntsuas IP (Ingress Protection)
Tus lej ob tus lej: thawj tus lej yog kev tiv thaiv plua plav (6=plua plav nruj), qhov thib ob yog kev tiv thaiv dej (5=lub dav hlau dej, 8=puv immersion). Sab nraum zoov cov ntxaij vab tshaus yuav tsum muaj tsawg kawg yog IP65.
Tuag Pixel
Ib qho LED uas tsis teeb (nyob twj ywm tsaus) lossis nyob ruaj khov. Ob peb lub pixels tuag yog ib txwm nyob rau xyoo, tab sis cov tuam txhab tsim khoom zoo lav xoom thaum xa khoom.
Module vs. Txee
A moduleyog qhov tsawg tshaj plaws hloov chav tsev (xws li pobzeb). Atxeeyog ib tug nruj thav duab tuav ob peb modules - cov khoom yog bolted ua ke los tsim ib tug puv npo.
Los ntawm tam sim no koj muaj daim ntawv qhia meej meej: paub koj qhov xwm txheej, zam cov teeb meem uas tshwm sim los ntawm kev siv daim ntawv txheeb xyuas, thiab hais lus tus neeg tsim khoom cov lus nrog cov ntsiab lus yooj yim. Ib tug ntseegcoj zaub manufacturerstsis yog ib qho nrog lub vev xaib flashiest - nws yog ib qho uas muab cov lus teb ncaj ncees, qhia cov neeg siv khoom tiag tiag, thiab txhawb nqa lawv cov khoom nrog kev txhawb nqa zoo. Siv cov lus qhia no, thiab koj yuav txuag koj tus kheej lub hlis ntawm kev ntxhov siab - tsis txhob hais txog cov nqi kho mob.
