Khoom siv ib txwm muaj nws lub neej kev pabcuam. Qhov no kuj siv tau rau LCD saib. Feem ntau lawv tawg vim tsis ua hauj lwm ntawm lub backlight. Tab sis muaj ib txoj kev tawm ntawm qhov teeb meem no, yog li koj yuav tsum tsis txhob muab pov tseg xws li ib tug txheej txheem. Txhawm rau rov pib nws txoj haujlwm, nws yuav txaus los hloov lub teeb nraub qaum ntawm lub monitor rau LED.
Ntaus
Thaum tab tom nrhiav qhov zoo, tej zaum koj yuav ntsib qhov tseeb tias yuav tsis muaj lub teeb fluorescent muag. Thiab hloov lub backlight ntawm lub monitor nrog LED nyob rau hauv nws tus kheej yuav tsis yooj yim. Feem ntau siv LED sawb.
Kev ntsuas tsis raug
Ua ntej koj pib mounting daim kab xev rau hauv cov zaub, koj yuav tsum tau ntsuas qhov degree ntawm nws tawg. Txhawm rau txheeb xyuas qhov no, koj yuav tsum paub qee qhov subtleties. Qhov tsis ua hauj lwm ntawm qhov muag teev nyob rau hauv lub backlight tej zaum yuav yog vim li cas hauv qab no.
Ua ntej, tej zaum yuav muaj qhov pib tsim khoom tsis raug.
Thib ob, lub teeb tuaj yeem puas yog tias lub cuab yeej poob lossis raug tsoo los ntawm ib yam dab tsi.
Thib peb, qee zaum luv luv tshwm sim hauv cov hlau ntawm lub teeb.
Plaub, lub teeb tuaj yeem tawm tuajtawm ntawm kev txiav txim, tau ua haujlwm rau lawv lub sijhawm. Yooj yim muab, lawv tuaj yeem hlawv tawm.
Thaum spinning li cov zaub, nws yog ib qho yooj yim los txiav txim qhov muaj malfunctions thiab tsim kom muaj qhov ua rau lub breakdown.
Rau qhov kev hloov pauv ntawm cov teeb pom kev zoo, koj yuav tsum nkag siab tias cov kua siv lead ua kua matrix ua rau txhua yam khoom siv niaj hnub nrog cov ntxaij vab tshaus ua haujlwm.
Yuav ua li cas LCD matrices ua haujlwm
Nyob rau hauv txhua qhov niaj hnub saib, LCD matrices ua haujlwm raws li lub hauv paus ntsiab lus ntawm lumen. Ntawd yog, teeb pom kev ua haujlwm hauv lub cuab yeej, qhov muag teev uas ci los ntawm tag nrho cov matrix.
Tab sis nco ntsoov tias qhov zoo ntawm cov zaub yog ncaj qha nyob ntawm hom teeb pom kev zoo.
TVs thiab cov saib nyob ruaj khov tam sim no feem ntau siv cov teeb pom kev ncaj qha. Ntawd yog, LED, lub teeb nyob rau ntawm tag nrho saum npoo ntawm lub vaj huam sib luag.
2 blocks yog siv los qhia txog cov matrix. Txhua qhov thaiv muaj ob lub teeb. Lawv nyob rau sab saum toj thiab hauv qab ntawm cov zaub. Yog li ntawd, muab lawv tso rau hauv txoj kev no tsim teeb pom kev zoo ntawm tag nrho cov matrix.
Qhov kev npaj no ua rau lub teeb pom kev zoo txawm tias lub teeb tawg. Inverters yog lub luag haujlwm rau lub hwj chim ntawm cov qij no.
Thaum ib qho ntawm cov qij tawg thiab tsis ua haujlwm, lub inverter ceeb toom tias lub teeb pom kev tsis sib xws. Yog vim li ntawd nws thiaj tsis ua haujlwm. Qhov no muaj nuj nqi yog tsim rau hauv nws kom tsis txhob muaj teeb meem ntxiv nyob rau hauv lub backlight. Yog li feem ntau lub inverter provokes ib qho teeb meem thaum, tom qab ib tug tawg ntawm ib tug ntawm 4 qhov muag teevbacklight ua haujlwm rau qee lub sijhawm.
Tom qab paub cov ntaub ntawv no, koj tuaj yeem ncaj qha mus rau txheej txheem ntawm kev txhim kho lub teeb pom kev tshiab.
txheej txheem
Txhawm rau txhim kho lub teeb pom kev zoo ntawm LED rau lub monitor, koj yuav tsum ua raws li ntau txoj cai. Nws yog ib qho tseem ceeb uas yuav tau ua txhua yam hauv ib qho kev txiav txim kom meej. Yog li, thawj kauj ruam yog los tsim kom pom seb lub backlight puas tau tawg, vim nws tsis yog tib lub luag haujlwm rau kev muab lub teeb. Qhov no tuaj yeem nkag siab yooj yim los ntawm disassembling cov zaub.
Feem ntau qhov kev tawg ntawm qhov xwm txheej no pom muaj nyob hauv TV saib, khoos phis tawj. Lub vijtsam tuaj yeem qhib thiab rov qab tua dua tom qab lub sijhawm luv luv. Ua ntej hloov lub saib mus rau LED backlighting, nws yuav tsum xub muab disassembled. Nws tsis yog qhov nyuaj ua qhov no. Cov txheej txheem yog tib yam rau feem ntau cov qauv sib txawv, thiab tib cov lus qhia yuav siv tau thaum txhim kho LED backlight hauv LD 22 saib thiab lwm yam zoo sib xws.
Kev txiav txim siab
Cov txheej txheem no tsis yog qhov nyuaj tshwj xeeb los piav qhia meej, txawm li cas los xij, txhua yam khoom siv muaj ntau tus yam ntxwv, saib thiab qhov ntau thiab tsawg sib txawv, thiab cov tuam txhab tsim khoom sib sau ua ke sib txawv. Tab sis cov txheej txheem ib txwm muaj tib cov kauj ruam, tsuas yog muaj qhov hloov pauv hauv qee cov ntsiab lus. Yog li ntawd, cov ntsiab lus dav dav tuaj yeem pleev xim.
Ua ntej tshaj plaws, tshem tawm cov khoom muag los ntawm kev tshem tawm cov ntsia hlau tuav nws ua ke nrog rau lwm cov ntaub ntawv fasteners.
Ib qhov tshwj xeeb yog ntsia rau hauv ib qho khoom siv,tsim los qhib lub latches los ntawm prying lub hau nrog cov khoom tiaj tus. Nws nyob ntawm qhov kawg. Thaum disassembling lub monitor thawj zaug, koj yuav tsum paub tias cov latches yuav raug nias kom nruj, tab sis tom qab ntawd nws yuav yooj yim dua thiab yooj yim dua rau kev nrog.
Tom qab ntawd, cov ncej hlau raug tshem tawm. Rau lub hom phiaj no, cov latches raug thawb rov qab los yog cov ntsia hlau yog unscrewed los ntawm rooj plaub. Rau cov neeg uas twb tau hloov lub backlight ntawm lub saib nrog ib tug LED sawb los yog tau hloov qhov chaw ntawm xws li pab kiag li lawm, cov txheej txheem yuav zoo li yooj yim heev. Tom qab cov txheej txheem no, cov xov hlau raug txiav tawm ntawm lub rooj tsavxwm.
Tom qab ntawd mus rau lub matrix uas tam sim no nkag mus. Nws muaj ntau lub voj voog txuas, uas yooj yim heev. Yog li ntawd, koj yuav tsum tau ceev faj heev thaum ua haujlwm nrog nws. Qhov kev daws teeb meem zoo tshaj plaws yog muab cov matrix tso tseg thiab npog nws nrog ib daim ntaub kom nws tsis txhob kov, ua kom puas los yog cia cov plua plav mus rau hauv nws. Yog tias txoj haujlwm tau ua tiav lawm, kev nkag mus rau inverter, hluav taws xob board thiab teeb yuav qhib. Nws yuav tsis yooj yim ua hauj lwm nrog lawv tam sim no. Yog tias ib tug neeg txiav txim siab pib hloov lub teeb rov qab mus rau LED hauv lub monitor, nws yuav tsum nco ntsoov tias tag nrho cov khoom tshem tawm tau nyob hauv nws li cas. Lawv nyuaj rau tsis meej pem, tab sis cov pib tshiab yuav tsum paub txog qhov muaj feem cuam tshuam ntawm kev tsis meej pem lawv qhov chaw.
kauj ruam tom ntej ntawm kev hloov lub teeb pom kev rov qab mus rau LED yog txiav tawm txhua lub teeb ntawm matrix. Tom qabdismantling cov grooves los ntawm nws, koj tuaj yeem rub tawm qhov chaw ntawm lub teeb pom kev tam sim no thiab tshem tawm ntawm lawv. Rau cov neeg uas tseem tsis tau teeb tsa LED backlight ntawm lub vijtsam saib, koj yuav tsum nco ntsoov tias CCFL teeb muaj mercury. Vim li no, nws yuav tsum ceev faj thiab siv ceev faj thaum ua hauj lwm nrog lawv.
Nyob rau theem tom ntej ntawm kev hloov lub teeb rov qab mus rau LED hauv lub monitor, lub teeb ci tau hloov ncaj qha.
Illumination ntawm tes
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias nws yog LED sawb uas tau xaiv rau cov txheej txheem no. Rau cov laj thawj no, nws yog qhov zoo tshaj plaws los nqa ib lub teeb ntawm LED backlights rau lub monitor nrog qhov loj me uas twb tau tshem tawm ntawm lub teeb, lossis xaiv ib qho uas ntev me ntsis. Yog li, hauv 1 meter nws yuav tsum yog tsawg kawg 120 qhov muag teev. Nyob rau hauv thiaj li yuav hloov dua siab tshiab ntawm lub monitor backlight rau LED kom ua tau zoo, koj yuav tsum xaiv cov xim uas yuav tsis tso siab rau koj ob lub qhov muag. Txwv tsis pub, muaj kev pheej hmoo tias tus neeg yuav rov ua txhua yam hauv qhov thib ob.
Qhov zoo tshaj plaws, thaum txhim kho LED backlight ntawm lub monitor nrog koj tus kheej tes, muab qhov nyiam rau cov qij dawb. Cov kab xev nrog cov muaju 3528 thiab 4115 yog qhov zoo tshaj plaws, lawv qhov ntev yuav tsum haum rau cov rooj zaum uas cov tapes yuav raug ntsia. Qhov loj tshaj plaws yog 7 mm. LED sawb nyob rau hauv lub saib rau backlighting yuav muaj ib tug txawv tus naj npawb ntawm teeb, nws zoo dua yog hais tias nyob rau hauv txhua rooj plaub nws yuav kav ntev tshaj li nws ua ntej. Tom qab ntawd, daim kab xev yog txuas nrog ob-sided daim kab xev. Muab lub LED sawb es tsis txhob ntawm lub monitor backlights nyob rau tib qhov chaw nyob qhov twglub teeb yav dhau los yog.
Feem ntau cov no yog cov grooves me. Qee zaum cov xov hlau qub los ntawm cov teeb pom kev raug tshem tawm yog siv los txuas ntxiv mus rau qhov chaw siv hluav taws xob. Ua ntej ntawd, nws yog ib qho tsim nyog los xyuas seb qhov sau ntawm LED-backlight puas raug ua tiav. Rau lub hom phiaj no, nws txuas nrog siv cov xov hlau mus rau lwm qhov chaw fais fab - roj teeb.
Nyob rau theem tom ntej, LED backlight ntawm lub vijtsam saib txuas nrog lub zog. Lub hwj chim board yeej ib txwm muaj nyob rau ntawm ob qho tib si computers thiab TVs. Txhawm rau hloov lub teeb pom kev zoo rau LED kom ua tau zoo, cov ntsiab lus no yuav tsum tau muab ntau dua. Cov neeg uas muaj kev paub txog kev sib txuas cov khoom siv hluav taws xob qis rau hauv lub network nrog qhov hluav taws xob uas dhau qhov kev ntsuas exponential nco ntsoov tias qhov no cov cuab yeej kub hnyiab tawm. Qhov no yuav tshwm sim vim qhov tseeb tias qhov kev tiv thaiv ntawm cov cuab yeej tsis yog tsim los rau tus nqi zoo li no. Koj yuav tsum nrhiav 12 V coj ntawm lub rooj tsavxwm thiab cov xov hlau los ntawm cov teeb tshiab nrog lawv. Thaum txuas LED backlight ntawm lub monitor, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov ua raws li cov polarities.
Tom qab ua qhov no, koj tuaj yeem txuas mus rau lub rooj sib tham ntawm TV lossis computer.
Flaws
Lub LED sawb teeb tsa hloov lub teeb nraub qaum ntawm lub saib muaj ib qho tseem ceeb rho tawm. Txij li txhua yam yog txuas ncaj qha, nws tsis tuaj yeem tswj hwm thiab lov tes taw nws. Yog li ntawd, nws yog ib txwm nyob rau thaum cov zaub tig rau. LED backlight ntawm lub monitor matrix, txuas nrog koj tus kheej tes, yuav ci dhau lawm, koj ob lub qhov muag yuav nkees ntawm nws. Txawm li cas los xij, txoj haujlwm nodaws tau.
Tsim kev hloov kho
Tom qab hloov lub teeb pom kev rov qab nrog LED, txuas ntxiv mus kho lub teeb rov qab. Txhawm rau ua qhov no, lawv ua haujlwm nrog cov xov hlau uas tau txuas nrog cov kab xev los muab lawv lub peev xwm los qhib thiab tawm thaum qee cov nyees khawm raug nias. Muaj ob txoj hauv kev los tsim lawv.
Raws li thawj zaug, lawv sib sau ua ke hauv Circuit Court, dhau los ntawm nws, thiab kho lub zog thiab siv lub teeb. Txhawm rau ua qhov no, ua cov hauv qab no.
- Nqa cov yas txuas uas nyob ntawm lub rooj tsavxwm tso saib. Nws tsis yooj yim los nrhiav nws: nws yog los ntawm nws tias cov xov hlau tso tawm, txhua lub qhov (socket) uas tau kos npe.
- DIM cov qhov hluav taws xob yog siv los muab lub zog qhib thiab tawm. Kho qhov ci ci los ntawm kev hloov PWM controllers.
- Tom qab ntawd, lawv siv lub teb cuam tshuam nrog cov N channel. Ua kom muaj kev sib txuas ntawm cov hlau sib xws los ntawm LEDs mus rau cov khoom siv hluav taws xob Source. Lub Circuit Court yog siv los ntawm ib tug resistor nrog tus nqi nominal ntawm 100 mus rau 2000 ohms. Nws yog los ntawm nws tias Gate transistor txuas nrog txhua qhov DIM socket.
- Tom qab ntawd solder cov xov hlau nrog "ntxiv" los ntawm LED backlight. Rau lub hom phiaj no, lawv tso zis rau 12 V fais fab microcircuit, ces soldered.
- Tom qab ua tiav tag nrho cov kauj ruam saum toj no, teeb tsa lub teeb rov qab rau hauv cov ntsiab lus txuas, thiab tom qab ntawd pib sib sau cov zaub hauv qhov kev txiav txim rov qab. Nco ntsoov nco ntsoov ua tib zoo ua nrog cov matrix, cov ntxaij lim dej. Tom qab nocov khoom tso saib tuaj yeem siv tau.
Txoj kev thib ob yog cov txheej txheem hauv qab no rau kev siv cov kab xev nrog LED backlight inverters hauv cov saib ua rau lawv. Ua raws li qhov no.
- Txhawm rau txuas lub voj voog ntawm txoj kev no, dua koj yuav tsum nrhiav cov yas txuas nrog lub qhov (socket) DIM thiab ib qho ntawm / tawm. Qhov yooj yim tshaj plaws los txiav txim qhov no yog nrog tus pinout.
- Siv lub tshuab ntsuas ntau, hu rau lub qhov (sockets) los ntawm chav tswj hwm uas yog lub luag haujlwm rau cov teeb pom kev teeb pom kev zoo. Qhov xav tau DIM teeb liab los ntawm lawv, nrog rau ntawm / ntawm.
- Cov kauj ruam tom ntej yog solder cov xov hlau los ntawm LED inverters mus rau lub qhov (socket) kuaj pom. Txhawm rau kho lub teeb rov qab nrog cov inverter, tshem cov xov hlau uas siv lub teeb dhau los.
- Kho lawv qhov twg muaj qhov chaw dawb siv daim kab xev ob sab.
- Txhawm rau ua kom tiav qhov hloov pauv ntawm lub teeb pom kev rov qab mus rau LED thaum kawg, tshawb xyuas lub teeb pom kev tshiab hauv kev nqis tes ua.
Siv txoj kev no ua rau kev ua tau zoo ntawm cov teeb tshiab. Hloov lub LCD saib rau LED backlighting yuav txaus siab rau leej twg nrog qhov tseeb tias cov khoom siv yuav ua haujlwm ntev dua.
Yog vim li cas hloov
Tam sim no, cov kua siv lead ua kua uas muaj lub teeb pom kev hauv qab tau dhau los ua neeg nyiam heev. Cov tshuab no tau los hloov cov qauv qub uas tsis zoo. Txawm li cas los xij, txawm tias muaj qhov ua tau zoo, cov khoom siv zoo li no qee zaum txawm peem rau nrog backlighting nrog cov teeb ntawm ib hom outdated. Lawv yeej tsis tau muaj lub neej ua haujlwm ntev,feem ntau tawg. Nws yog vim qhov no tias teeb pom kev zoo feem ntau tawg hauv cov thev naus laus zis niaj hnub. Qhov no tsis yog qhov teeb meem loj heev, thiab tsis yog nyob rau hauv txhua rooj plaub koj yuav tsum tau hu rau tus kws kho mob tshwj xeeb. Hloov lub teeb pom kev rov qab mus rau LED pab txuag nyiaj.
Vim li cas LEDs?
Txawm hais tias lub sijhawm tam sim no muaj ntau lub tuam txhab tsim khoom lag luam, txhua yam khoom siv muaj kwv yees li tib txoj cai ntawm kev ua haujlwm. Yog li ntawd, nws yog qhov yooj yim heev los hloov cov teeb pom kev nrog LED backlight. Nws tsis muaj teeb meem dab tsi cov chaw tsim khoom lub cuab yeej muaj. Yog tias txawm tias thaum ua raws li cov lus qhia, qhov xav tau tsis pom ntawm qhov chaw qhia, ces nyob rau hauv txhua rooj plaub nws yog muab zais nyob ze. Saib ze ze, nws yuav yooj yim pom.
LEDs yog lub teeb pom kev niaj hnub thiab siab heev. Feem ntau siv LED sawb. Thaum nws tsim nyog los kho lub monitor, LED backlight raug xaiv rau cov laj thawj hauv qab no.
Ua ntej, nws kav ntev. Yog tias koj txuas nws kom raug, ces nws tuaj yeem ua haujlwm yam tsis muaj kev puas tsuaj rau qhov zoo ntev li 10 xyoo. Tsis muaj lwm yam teeb pom kev zoo siv rau tib lub hom phiaj tuaj yeem khav tau tus yam ntxwv zoo sib xws. Lawv ua tsis tau ntau dhau qhov no.
Thib ob, nws yooj yim heev uas cov kab xev tau tsim los ntawm tus kheej-nplaum. Yog li ntawd, mounting yog nqa tawm yam tsis muaj teeb meem ntawm txhua qhov chaw, nrog rau sab nraub qaum ntawm cov zaub.
Thirdly, LED qhov muag teev muaj lub teeb ci ntsa iab. Lawv illuminated qhov screen heev heev. Yog tias koj coj mus rau hauv tus account ntau cov lus pom zoo, tom qab hloov lub LCD saib rau LED backlighting, koj ob lub qhov muag yuav tsis nkees tom qab kev sib cuag nrog cov zaub.
Plaub, koj tuaj yeem xaiv qhov teeb pom kev zoo rau koj saj.
Nws yuav tsum tau ua tib zoo mloog rau ib qho. Txawm hais tias qhov kev xaiv ntawm tapes los ntawm hom teeb pom kev zoo yog ib txwm loj heev - muaj ntau yam ntawm lawv nyob rau hauv rhawv, nws yog qhov zoo tshaj plaws los muab kev nyiam rau qhov siab, pastel ntxoov. Piv txwv li, qhov kev xaiv zoo tshaj plaws yuav yog daj lossis dawb ribbon. Los ntawm kev xaiv cov xim zoo li no, ib tug neeg yav tom ntej yuav ua tsaug rau nws tus kheej rau qhov no. Nws yuav yooj yim dua rau lub qhov muag kom pom cov ntaub ntawv los ntawm lub vijtsam nrog cov teeb pom kev zoo li no.
About Ribbons
LED strips yog muag hauv coils ntawm 5 m. Qhov ntev no ib txwm txaus los tsim lub teeb pom kev zoo thiab zoo.
Cov khoom lag luam yooj yim heev rau kev txuas mus rau lub rooj tsav xwm ntaus ntawv. Nws txaus ua raws li cov lus qhia yooj yim.
Tsis tas li ntawd, cov kab xev yog cov yam ntxwv ntawm kev siv hluav taws xob tsawg, txawm tias lub zog ntawm lub teeb pom kev loj txaus. Feem ntau, LEDs xav tau qhov hluav taws xob tsuas yog 12-24 V.
Diodes yeej tsis kub dhau thaum ua haujlwm. Qhov no yog ib qho tseem ceeb heev, txij li overheating ntawm qhov muag teev yog vim li cas rau qhov tawg ntawm lub teeb ntawm cov qauv tsim rau hauv cov zaub.
Cov qhov qub qub tseem tuaj yeem tawg vim qhov tseeb tias lub cuab yeej feem ntau qhib lossis kaw. Tab sis diodes tsis ntshai.
LED strips tiv taus txhua yam kev cuam tshuam sab nraud. Qhov no kuj pab txhawb rau lawv cov durability. Siv lawv, koj tuaj yeem paub tseeb tias qhov kev pheej hmoo ntawm kev puas tsuaj rau lawv txo qis.
Yog li, hloov cov teeb pom kev tsis tu ncua lossis tawg ua rau muaj txiaj ntsig zoo. Txawm li cas los xij, ua ntej koj ua lub teeb pom kev hauv qab ntawm LED sawb, koj yuav tsum ua tib zoo nyeem cov lus qhia, thiab thaum ua haujlwm, koj yuav tsum ua tib zoo ua raws li tag nrho cov lus pom zoo. Tom qab ntawd lub teeb rov qab tshiab yuav siv sij hawm ntev thiab txaus siab rau tus tswv.
LED myths
Yog tias koj nug txhua tus neeg siv thev naus laus zis nrog cov lus nug, nws puas yuav hloov lub LCD nrog tib qho, tab sis nrog LED backlighting, hauv 90% ntawm cov lus teb yuav yog. Txawm li cas los xij, los piav qhia vim li cas nws yuav zoo dua li CCFL cov thev naus laus zis, feem ntau yuav tsis tuaj yeem ua tau. Qhov zoo tshaj plaws, nws yuav rov hais dua ib qho ntawm cov dab neeg uas tau nthuav dav niaj hnub no, uas tau dhau los nrog LED backlighting.
Txawm li cas los xij, tsis muaj qhov nyuaj tshwj xeeb hauv kev nkag siab txog LED thev naus laus zis. Kev paub me ntsis yog txaus, thiab cov dab neeg hais txog nws yuav raug tshem tawm.
Myth 1: LED zoo dua LCD.
LED cov lus qhia yog ib hom kev siv thev naus laus zis uas tsis muaj dab tsi cuam tshuam nrog cov qauv siv computer. Yog li, lawv yog cov ntaub ntawv, kev tshaj tawm cov saib uas tau teeb tsa ntawm txoj kev hauv nroog. Ntawm cov saib no, kev pom pom tshwm sim siv cov teeb ci LED - ib lossis ntau, vim li no lawv hu ua li ntawd. Lawv ci ntsa iab, tab sis lawv qhov kev daws teeb meem tsawg.
Tab sis LCD lub khoos phis tawj saib nrog LED backlight yog suav tias yog qhov tshwm sim sib cais. Pixels yog tsim nyob rau hauv lawv tseem nrog kev pab ntawm lub matrix. Nyob rau hauv nws cov hlwb, cov kua muaju yog tswj los ntawm lub teeb liab voltage, lawv pab kom tig lub dav hlau ntawm polarization ntawm lub teeb mus rau cov ces kaum xav tau. Qhov no tswj cov qib ntawm nws nkag mus.
Thaum LEDs tau teeb tsa hauv cov zaub, lub teeb hloov pauv. Lub matrix tseem yog lub luag haujlwm kom dhau nws. Feem ntau, cov lus qhia tau teeb tsa ua ntej nrog CCFL teeb. Lawv raug teeb tsa los ntawm inverter. Txawm li cas los xij, LEDs ci ntsa iab ntawm tib lub zog, tab sis siv hluav taws xob tsawg dua. Vim li no, lawv thiaj tuaj rau lub computer saib.
Yog li ntawd, cov lus qhia LED tsis tuaj yeem sib tw nrog LCDs, vim tias lawv muaj ntau hom khoom siv.
Myth naj npawb 2: LED teeb pom kev zoo tib yam txhua qhov chaw xws li CCFL.
Muaj ntau ntau yam ntawm CCFL teeb. Lawv tuaj yeem cuam tshuam cov yam ntxwv tseem ceeb tshaj plaws ntawm lub cuab yeej. Yog li, yog tias lawv tau txhim kho phosphor, tus saib muaj xim ntau dua.
Thaum nws los txog rau LEDs, qhov xwm txheej yuav nyuaj dua. Qhov tshaj plaws yog tias muaj ntau yam tseem ceeb ntawm lawv. Lawv cov yam ntxwv txawv heev.
Qhov sib txawv tseem ceeb ntawm lawv yog xim. Yog li, muaj ob txoj hauv kev tseem ceeb los siv LED backlighting. Ua ntej, txoj kev pheej yig thiab yooj yim yog yuav cov teeb dawb. Tab sis rau qhov no koj yuav tsum ua tib zoo xaiv qhov ci thiab xim ntawm lub ci.
Thib ob, muaj ntau txoj hauv kev zoo dua. Muaj cov strips nrog cov xim LEDs, thiab nws yog lawv cov kev sib xyaw tshwj xeeb uas ua rau lub teeb dawb. Feem ntau siv RGB triads, tab sismuaj lwm txoj kev xaiv. Txhawm rau tsim cov xim ntawm cov pixels, tag nrho cov muaj me ntsis qhov tob ntawm matrix yog siv. Cov zaub npog cov xim loj gamut, thiab cov xim luam tawm ua qhov tseeb dua. Feem ntau cov yam ntxwv no tseem ceeb heev hauv kev ua haujlwm engineering, qhov twg qhov kev paub no tau siv tshwj xeeb tshaj yog nquag.
Txawm li cas los xij, kev siv txoj hauv kev thib ob ua rau muaj kev sib tsoo ntau yam nyuaj. Yog li, koj yuav tsum ua tib zoo xaiv triads ntawm diodes. Tsis tas li ntawd, koj yuav tsum kawm paub tswj lub teeb pom kev zoo li cas thaum lub teeb pom kev hloov pauv, lub ntsiab lus dawb tseem nyob hauv qhov chaw.
Nws tseem muaj qhov sib txawv ntawm qhov tsim ntawm lub teeb nraub qaum: lawv tuaj yeem ua rau pem hauv ntej thiab nraub qaum.
Feem ntau LCD saib siv ntug teeb pom kev zoo. Cov teeb yog nyob rau ntawm qhov kawg ntawm cov panels. Lawv cov hluav taws xob raug xa mus rau cov lus qhia lub teeb. Lub teeb rays yog refracted thiab coj mus rau lub LCD matrix, polarizer thiab diffusers. Lub ntsiab kom zoo dua ntawm xws li ib tug ntaus ntawv yog hais tias cov zaub yog nyias. Tab sis kom ntseeg tau tias lub teeb pom kev zoo nyob hauv nws, nws yog qhov nyuaj dua. Lawv siv ntug LED-backlight nrog dawb LEDs.
Nyob hauv kev tsim qauv tom qab, kev siv cov pab pawg ntawm cov teeb ci LED yog xav tau. Thaum xaiv hom kev tsim no, nws tuaj yeem tswj tau qhov ci ntawm lub teeb rov qab los ntawm cheeb tsam. Qhov no zoo heev rau TVs. Tab sis txoj kev no tsuas yog siv tau rau hauv cov saib nrog cov tuab tuab.
Myth 3: LED backlight muaj qhov zoo tshaj plaws xim gamut.
Txij thaum pib, LED backlighting tsuas yog siv hauv cov cuab yeej tshaj lij vim yog qhov tshwj xeeb zoo ntawm RGB. Nws thiabmuaj qhov dav xim gamut uas tshaj cov qauv. Tab sis rau kev siv cov khoom no hauv lub neej niaj hnub, lub teeb pom kev zoo li no yuav kim heev.
Dawb LEDs tsis muaj tib xim rendering. Lawv sib tw nrog cov pa CCFL. Cov yam ntxwv kawg ntawm cov xim gamut nyob ntawm tus yam ntxwv ntawm matrix nws tus kheej.
Myth 4: LED teeb pom kev zoo dua qub.
Kev tsis sib xws hauv vaj huam sib luag tuaj yeem tshwm sim los ntawm cov hluav taws xob tsis sib xws ntawm cov teeb pom kev zoo, cov yam ntxwv ntawm cov teeb pom kev zoo, polarizer, matrix, kev ua txhaum ntawm lub teeb kis, lub teeb lim. Yog li qhov tseem ceeb tsis yog tib yam ntawm qhov teeb meem no.
Tab sis muaj kev daws teeb meem. Saib xyuas qhov tsis sib xws tuaj yeem raug them rau. Txawm li cas los xij, qhov no yog kim. Qhov sib xws ntawm LED-backlit zaub tsis txawv ntawm CCFL saib.
Myth 5: LED teeb tsis flicker, tsis zoo li CCFL.
Ib yam LCD saib flickers txawm tias qhov kev xav tsis zoo uas nws tsis ua. Nws tsuas yog tias cov txheej txheem tshwm sim nrog ntau zaus uas nws tsis pom.
qhov teeb meem no tsis daws tau txhua txoj kev. Ua haujlwm nrog cov duab niaj hnub ntawm qhov siab tshaj plaws nyob rau hauv nruab hnub nrig sab hauv tsev ua rau lub qhov muag puas.
Txawm hais tias qhov ci ntsa iab ntawm LEDs yog dav, hauv txoj kev xav nws yuav muaj peev xwm tswj tau qhov ci yam tsis siv PWM. Nws yog tus uas ua rau flicker.
Tab sis qhov tseeb, qhov kev zoo siab no tsis yog pheej yig, ntxiv rau, nws ntxiv ntau yam kev nyuaj, kev daws teeb meem yuav tsis yooj yim.
Yog li ntawdtej zaub, txawm tias cov LEDs, yuav flicker.
Myth 6: LED teeb pom kev zoo dua li CCFL.
Nws yog tiag. Cov lus qhia yog ncaj ncees, xws li lub yeeb koob ntawm LEDs yog qhov tsim nyog los ntawm lawv. Thaum siv cov teeb pom kev dawb dawb los ntawm LEDs, hluav taws xob siv yuav luag ob zaug tsawg dua thaum siv cov qauv CCFLs. Yog li cov lus dab neeg no tau lees paub hauv kev xyaum.
Myth 7: LED-backlit zaub yog ntsuab dua CCFL.
Nws paub tias ib puag ncig ib txwm raug kev txom nyem heev thaum lub sijhawm tsim khoom siv hauv IT kev lag luam. Qhov no tau coj mus rau qhov tseeb tias ib puag ncig cov qauv tau tshwm sim txhua qhov chaw. Lawv ua tib zoo saib.
Tab sis cov txheej txheem rov ua dua yog txawv. Yog li ntawd, txhua leej txhua tus paub tias cov teeb pom kev zoo tib yam muaj cov tshuaj lom mercury. Tab sis txhua leej txhua tus tau pom tias tib neeg pov tseg li cas, feem ntau tawg, nrog rau lwm cov khib nyiab. Tom qab ntawd, cov khib nyiab tau hlawv, thiab tag nrho cov pej xeem hauv lub tebchaws tau pa mercury vapor.
CCF teeb kuj muaj mercury. Tab sis cov LEDs yog deprived ntawm xws li ib tug txaus ntshai yam. Yog li ntawd, lawv siv tiag tiag cuam tshuam rau ib puag ncig hauv txoj hauv kev zoo. Cov lus dab neeg kuj tau lees paub hauv kev xyaum.
Myth 9: LED teeb pom kev zoo kim dua CCFL.
Tsis ntev dhau los, cov lus no muaj tseeb. RGB LED system yog kim. Tus nqi tag rau nws tseem siab.
Tab sis qhov xwm txheej txawv heev nrog cov LEDs dawb. Qhov tshwm sim ntawm cov teeb pom kev tshiab no tau ua rau muaj kev lag luam tiag tiag ntawm cov tuam ntxhab ntawm LEDs thiab cov khoom siv CCFLs. Feem ntau tus nqi ntawm cov lus qhia nrogLEDs siab dua. Qhov tseeb yog tias cov thev naus laus zis no tseem hluas heev, thiab cov neeg siv khoom tsis muaj sijhawm los paub lawv kom ze. Kev zoo siab nyob ib puag ncig lawv yog qhov loj heev.
Myth 10: LED backlight muaj qhov sib txawv ntau dua.
Lub ntsiab lus zoo sib xws, txij li nws ntau yam zoo li qub tsis nyob ntawm qhov chaw teeb: nws tuaj yeem ua tau ob qho tib si CCFL thiab LED, qhov taw qhia yuav tsis hloov pauv txhua txoj kev.
Dynamic contrast yog qhov sib txawv. Nws nyob ntawm cov algorithms ntawm qhov sib thooj backlight chaw, ntawm cov ntsiab lus uas tau ua si ntawm lub monitor. Tab sis thaum siv LED-backlight, backlight nrog cheeb tsam tswj kuj cuam tshuam qhov kawg tshwm sim - lub zos dimming.
Thaum ib daim duab muaj ob lub teeb thiab qhov tsaus ntuj tib lub sijhawm, qhov sib piv yuav phim tus nqi zoo li qub. Tab sis hauv zos dimming technologies dim lub backlight nyob rau hauv qhov tsaus ntuj nti, thiab ua rau kom nws nyob rau hauv lub teeb. Qhov no ua rau muaj qhov sib txawv ntxiv.
Yuav kom dimming hauv zos ua haujlwm kom raug, cov blocks cais yuav tsum muaj kev tswj hwm ntawm cais pawg ntawm LEDs. Tab sis tus qauv no kim.
Cov LEDs dawb tsis tu ncua thiab pib sai heev, uas ua rau lawv txawv ntawm CCFL.
Yog li ntawd, hauv kev xyaum, cov lus dab neeg tau lees paub. Tab sis yog tias peb tab tom tham txog lub computer saib, ces qhov ntsuas no tsis tseem ceeb rau nws. Qhov tseem ceeb tshaj yog qhov sib piv zoo li qub.
Zoo kawg
Nrog rau kev teeb tsa kom raug ntawm LEDs hauv lub saib, koj tuaj yeem ua tiav kev txuag, txhim khontsuas ntawm cov cuab yeej uas twb muaj lawm. Kev hloov pauv yog txheej txheem yooj yim. Qhov tseem ceeb yog ua raws li cov lus qhia ua tib zoo.
