Dab tsi yog TFT LCD thiab nws lub ntsiab lus yog dab tsi? Dab tsi yuav tsum tau pom thaum siv LED backlight ntawm LCD?

Hauv cov tam sim no tiaj tus vaj huam sib luag zaub (FED) pab kiag li lawm, LCD cov khoom siv coj los tuav txoj hauj lwm tseem ceeb, thiab feem ntau ntawm cov khoom siv LCD uas twb muaj lawm yog hloov mus los. Rau cov khoom txav LCD no, cov thaub qab yog qhov tseem ceeb ntawm lawv.

Hauv LCD cov teeb pom kev zoo, txawm hais tias txias cathode fluorescent teeb (CCFL) tam sim no dominate, LEDs muaj qhov zoo ntawm cov xim gamut dav, kho qhov taw tes dawb, qhov siab dim thiab lub neej ntev, yog li lawv tsis ntev los no tau tsim raws li hom tshiab ntawm LCD backlight Tau qhov twg los, zoo tau siv nyob rau hauv qee lub desktop LCD tsom kwm thiab LCD TVs.

LED backlight rau LCD (txuas ntxiv mus hu ua LED backlight) yog hom tshiab ntawm backlight technology nrog ntau hom, tab sis nws tsis tau siv dav hauv LCD li vim hais tias tseem muaj teeb meem kev siv tshuab lossis tus nqi yuav daws tau. Rau qee qhov tseem ceeb dua LED backlight los, cov ntawv no yuav qhia lawv hauv cov pawg lus hauv qab no.

Txhim kho lub teeb ua kom zoo dua, yog li nce qhov sib piv ntawm lub vijtsam tawm lub teeb rau lub teeb xa tawm lub teeb yog qhov tseem ceeb rau kev txhim kho LCD rov qab. Static teeb pom kev zoo LCD backlight yog ib qho ntawm lawv. Lub ntsiab cai tseem ceeb yog tias txhua lub sub-pixel ntawm lub LCD tsuas yog taws los ntawm nws cov xim sib haum (daim duab 1), yog li tshem tawm qhov xav tau ntawm cov xim lim dej thiab txhim kho lub teeb ci. Cov.

Hauv LCD nrog cov teeb pom kev zoo ntawm lub teeb rov qab, lub microlens array tau teeb tsa hauv qab pixel txheej, thiab txhua pixel sib raug rau microlens. Cov backlight los teeb pom kev zoo siv ntawm no yog qhov peb thawj xim saib ncaj qha rau ntawm qhov chaw backlight, thiab qhov teeb pom kev ntawm txhua qhov xim raug cuam tshuam rau qhov sib piv sub-pixel, thiab lub qhov dej pom zoo rau ntawm lub vijtsam zaub los ntawm lub laij projection.

Txhawm rau kom tau txais qhov ci ntsa iab nyob rau ntawm lub vijtsam zaub thiab txhim kho kev sib thooj ntawm cov zaub: Hauv cov cuab yeej LCD no, lub teeb pom kev zoo lub teeb thiab tag nrho sab hauv los tsom iav (TIR) ​​npoo-lub teeb qhia coj phaj tau siv, thiab cov qhia lub teeb phaj muaj ib qho tsis tsim nyog haum txheej.

Cov teeb pom kev zoo rov qab zoo li qub siv peb CCFLs, liab, ntsuab thiab xiav. Tsis ntev los no tau tsim cov hluav taws xob zoo li qub backlight LCD siv LEDs ua nws cov backlight qhov chaw.

Hauv cov khoom siv LCD nrog lub teeb liab rov qab zoo li qub, lub teeb ci ntsa tawm lub kaum tawm los ntawm TIR npoo teeb lub yeeb nkab yog 70 ° -90 °. Kev siv hom rov qab no tshem tawm lub teeb poob vim los ntawm cov xim lim (cov xim lim tau raug zam), thiab qhov sib kis ntawm lub tshuab tau mus txog peb zaug dua li ntawm cov tsoos LCD. Nyob rau tib lub sijhawm, qhov backlight no tuaj yeem yooj yim rau cov qauv ntawm cov ntaus ntawv thiab txo hwj chim siv.

Txhawm rau txhawm rau txo qhov teeb meem ploj mus thiab txhim kho lub teeb faib lub kaum sab xis kom tshem tawm cov pa phem ib puag ncig los ntawm kev siv mercury, kev hloov pauv ntawm CCFL nrog LED ua qhov backlight los ntawm lub cuab yeej tau dhau los ua txoj kev txhim kho ntawm qub teeb pom kev zoo LCD backlight. Tam sim no, LED teeb pom kev zoo rov qab tau ua tiav tau siv hauv cov khoom siv LCD nrog txoj cai 33cm kab rov tav XGA daws teeb meem. Vim tias lub zog siv hluav taws xob ntawm cov khoom siv no raug txo qis heev, nws tsim nyog rau kev siv siab-siab.

Siv cov xim liab, ntsuab thiab xiav LED ua LCD teeb pom kev zoo tuaj yeem ua tiav cov xim zoo nkauj, txo kev siv fais fab, thiab zam kev ua paug ib puag ncig los ntawm kev siv mercury. Nws yog qhov tsim nyog los tswj cov xim kub ntawm lub teeb dawb kom ua tiav lub neej ntev txaus.

Tsis ntev los no, cov lus tawm tswv yim hom LCD backlight qhov chaw siv liab, ntsuab, thiab xiav LEDs ua lub teeb ci thiab lub teeb xim thiab cov tswv yim tswj hwm tau tsim. Nrog rau kev rov qab zoo li no, cov xim xim ruaj khov thiab lub teeb ci txuas ntxiv ntawm" 0.02 tau tiav, thiab dawb taw tes thiab ci ntsa iab ntawm lub cuab yeej kuj tuaj yeem tswj tau los ntawm nws.

Cov lus tawm tswv yim LED backlight system yog tsim los ntawm plaub lub ntsiab ua haujlwm, uas yog lub ntsuas nrog lub xim lim, cov lus rov qab tswj hwm, cov mem tes dav dav tes taws los piav (PWM) LED tsav tsheb, thiab liab, ntsuab, thiab xiav lux-eonTM LED teeb pom kev zoo array caij.

Cov khoom siv hluav taws xob siv hauv LED teeb nyob ntawm no yog cov nplua nuj-hom indium gallium nitride (InGaN) xiav lub teeb roj teeb thiab cov tub ntxhais ntsuab lub teeb, thiab txhuas indium gallium phosphide (AllnGaP) liab lub teeb tubes, txhua tus muaj lub zog loj thiab ua haujlwm siab. Cov. Daim duab 5 yog emission spectral kab kev ua tau zoo ntawm cov LED backlight los, thiab daim duab 6 yog lub neej kev ua haujlwm zoo thaum ntsuas kub yog 85 ° C. Hom rov qab no muaj lub zog uas tsis tshua muaj qhov hloov ua taus zog thiab tsav los ntawm PWM tas li tam sim no, thiab cov khoom tawm ntawm lub teeb ci yog qhov sib npaug rau cov mem tes dav ntawm PWM. Qhov teeb ci no muaj qhov zoo ntawm cov xim dav gamut, kho cov chromaticity thiab kev tiv thaiv ib puag ncig.

Lub sensor siv ntawm no yog tsim ntawm peb lub photodiodes nrog cov xim lim txheej tau teeb tsa hauv ib qho thiab cov ntawv luam tawm Circuit Court nrog kev sib nrig impedance amplification. Cov xim xim lim txheej ntawm lub sensor tau kwv yees tus nqi ntawm CIE193lXyzCMFs. Nrog lub ntsuas no, qhov tso zis hluav taws xob rau kev ntsuas lub teeb hluav taws xob muaj peev xwm tau txais. Ua ntej pub mov rau lub kis tau rau cov maub los, qhov ntsuas hluav taws xob yog nruab nrab los ntawm kab ke.

Cov tsav tsheb no yog hloov pauv fais fab mov uas tuaj yeem tsa thiab txo cov input voltage. Nws yog tsim ntawm kev hloov hluav taws xob-hloov tshuab tam sim no thiab qhov tsim nyog ntawm lub voj voog, uas tuaj yeem npaj ua ntej rau 600Hz loj siab PWM siv hauv LCD tshuab. Txhawm rau kom tsis txhob ua rau lub tshuab hluav taws xob ntau dhau ntawm kev cuam tshuam, poob hwj chim thiab nce tus nqi, tsis muaj lub tswv yim voj ntawm cov tsav no.

Cov tswv yim tswj hwm yog ua los ntawm peb ntu, hu ua xim tswj xim, lub luag haujlwm tseem ceeb tswj hwm thiab lub teeb tswj qhov teeb meem. Cov xim maub los muaj qhov sib txuam ua kom nruj rau kev them nyiaj yuam kev tawm ntawm lub sensor, yog li khaws cov tso zis chromaticity tsis tu ncua. Lub hauv paus tseem ceeb ntawm lub teeb tswj lub teeb ci yog qhov kev sib nkag siab zoo, uas muaj kev ua haujlwm ntawm hloov tawm lub teeb tsa tawm mus rau LED tam sim no lub luag haujlwm, thiab ua kom muaj kev sib raug zoo ntawm cov zis ci ntsa iab thiab qhov kub thiab qhov chromaticity tas li txhua lub sijhawm. Qhov no tuaj yeem ntsuas los ntawm Tau Txais hauv.

Siv cov lus tawm tswv yim hom LED rov qab, cov khoom siv LED tuaj yeem ua tiav xim xim ntawm" 0.003A △ u' v" nyob rau hauv qhov kub thiab txias ntawm 25 ℃ ～ 70 ℃, thiab tuaj yeem tau txais xim xim txaus siab: thaum ua qhov ntsuas cov tswv yim kho qhov muag lub sijhawm no, tsis tas yuav muaj lub zog loj ua ntej. Ntxiv rau, raws li tau hais los saum no, qhov no muaj cov txiaj ntsig ntawm cov xim gamut thiab kev tiv thaiv ib puag ncig.

Yog tias lub teeb ci siab liab, ntsuab, thiab xiav LED siv nyob rau hauv LCD backlight system, yuav tsum siv cov xim sib tov xim kom sib xyaw xim ua ntej lub teeb los ntawm lub teeb ci tuaj txog LCD vaj huam sib luag. Hauv chav ua noj LCD zoo li qub, kev sib xyaw xim yog ua nyob rau hauv phau ntawv qhia teeb uas rho cov qauv (xim dawb los yog microlens) ywj siab ntawm qhov ntsuas kho qhov muag. Txhawm rau ua kom pom qhov pom tag nrho thaj chaw, nws yog qhov yuav tsum siv ob daim phiaj qhia teeb, uas yuav ua rau lub teeb pom kev dhau los hnyav thiab tuab, thiab tseem yuav ua rau qhov tsis zoo ntawm lub teeb ci thiab chromaticity ntawm lub teeb qhia coj phaj yog qhov nyuaj kom phim.

Yuav kom kov yeej cov kev ua yuam kev saum toj no, Lub Tebchaws Netherlands tsis ntev los no tau tsim ib qho tshiab LED rov qab, uas txuas cov sib xyaw xim sib xyaw xim coj qhia nrog lub teeb pom kev zoo tso tawm lub teeb qhia phaj.

Cov teeb rov qab muaj li ntawm LED lub teeb ci ①, thawj daim iav elliptical mirror, sib xyaw xim lub teeb qhia lub phaj ③, daim iav elliptical thib ob film, zaj duab xis qhia ⑤, phaj tseem ceeb coj phaj ⑥, ntsuas thiab polarization tswj zaj duab xis ⑦, thav duab ⑧ thiab kub dab dej ⑨ Cov. Cov seem no yog sawv cev los ntawm cov zauv saum toj no hauv Daim Duab 7 thiab 8.

Thaum ua haujlwm, lub teeb tawm ntawm lub teeb ci LED source tau tshwm sim los ntawm thawj lub ellipse ② ntawm 90 ° thiab txuas nrog rau kev sib xyaw xim xim qhia phaj guide. Lub teeb tau sib xyaw rau qhov sib xyaw dawb lub teeb los ntawm kev sib xyaw xim-lub teeb qhia lub teeb, thiab tom qab ntawd txuas mus rau hauv lub ellipse thib ob ④ rau 90 ° ° Reflected rau hauv lub ntsiab qhia lub teeb ⑥. Lub ntsiab lus qhia kev teeb liab muaj cov qauv ntawm cov ntxaij vab tshaus pixels, uas yog qhov zoo rau lub teeb liab faib rau ntawm LED teeb ci. Lub teeb los ntawm daim iav elliptical thib ob yog qhia rau LCD vaj huam sib luag los ntawm daim phiaj qhia teeb loj.

Txhawm rau txhawm rau txhim kho cov xim sib txawv, ib qho microprism tseem tau nruab rau ntawm lub teeb nkag sab ntawm lub ntsiab qhia lub teeb, uas ua haujlwm kom nce lub angular faib ntawm lub teeb, yog li txhim kho kev sib xyaw ntawm lub teeb xim.

Ib qhov ua tau zoo ntawm aluminium zaj duab xis ua rau lub ntsej muag ci iav ci, thiab cov kab hluav taws xob siab coj los siv los ua kom qhov kev cuam tshuam rov qab. Daim iav elliptical ua rau lub axis kho qhov muag los ntawm LED tig 90 ° txog qhov dav hlau coj kev teeb, yog li ua tus qauv ntawm cov teeb ci rov qab ntau dua qhov qub.

Lub teeb taw qhia phaj ua ke hom LED backlight hauv tsab xov xwm no muaj kab pheeb ces kaum ntawm 38cm, muaj 34 LuxeomTM LEDs, lub tog raj txuas ntawm 9 hli, thiab lub zog tsav ntawm 45W. Siv cov LED rov qab ntawm lub teeb ci, lub siab ci ntsa iab ntawm 4300cd / m2 tau tiav.

Cov kev qhia teeb tshiab ua ke nrog LED backlight muaj qhov zoo li nram no:

● Lub teeb yuag, nyias cov tuab, muaj zog thiab ruaj khov;

Sib txuam nrog lub tshuab tsim hluav taws xob backlight thiab kev tsim khoom siv tshuab;

Nws tuaj yeem ua ke nrog ntau lub teeb qhia kev coj ua daim hlau, txawm tias cov ntxaij vab tshaus nrog cov qauv ua tiav ua ntej thiab cov duab ntxaij lub teeb coj qhia nrog lub ntsej muag kho qhov muag teeb;

Lub vijtsam siv tau muaj ntau qhov loj me (25.4cm-5lcm), tab sis lub suab ntawm LED thiab qhov ntev ntawm lub teeb qhia lub phaj tuaj yeem hloov pauv tsis hloov;

Qhov tso zis teeb flux ntawm txhua LED tuaj yeem khov kho kom ruaj khov, thiaj li ua kom lub teeb pom kev zoo tuaj yeem ua tiav yam tsis muaj ntau dua ntawm LED thiab txo lub suab LED;

● Cov xim sib xyaw ua kom zoo dua tuaj yeem txhim kho tau yooj yim los ntawm kev txuas ntxiv qhov ntev ntawm lub teeb taw qhia.

Lub LED rov qab yog qhov rov qab teeb pom kev zoo. Ua lub teeb rov qab-teeb nraub qaum, nws muaj peb yam ntxwv hauv qab no:

Lub teeb ci ntsa iab tuaj yeem tawm 360 ° raws nws txoj kab hluav taws xob;

Area Thaj chaw loj dua tuaj yeem ua daim npog nyias ntev dua;

Muaj peev xwm sib xyaw xim nrog cov qauv yooj yim.

Tus backlight ua ntej rau ntug-lit LCD muaj cov kev tsis zoo hauv qab no:

Vim tias lub teeb qhia kev coj ua yog ua los ntawm cov acrylic, nws yuav ua rau qhov hnyav thiab nce nqi thaum siv nyob rau hauv loj-loj LCD TVs (LCD-TV);

Txhawb nqa thiab nqus ultraviolet duab ci;

Thaum siv rau cov tso saib xim, nws tsis yooj yim los siv lub zog siab liab, ntsuab thiab xiav LED nyob rau hauv lub teeb ncaj qha.

Txhawm rau daws cov teeb meem saum toj no thiab txhim kho kev ua haujlwm ntawm LED backlight. Tebchaws Asmeskas tau koom tes nrog Nyij Pooj, Tebchaws Netherlands thiab Malaysia los tsim cov tshiab tshiab rau cov duab ci ci ncaj qha-teeb LCD-TV LED backlight. Nyob rau hauv no ntawm cov backlight, lub teeb coj qhia siv lub teeb tsis yog siv, tab sis ib qho hluav taws xob LED tau muab tso rau hauv kab noj hniav tom qab LCD vaj huam sib luag. Nrog rau hom LED backlight, nws muaj peev xwm tswj tau kom zoo dua qub kom tsis txhob muaj teeb ci thiab xim thaum tswj kom muaj lub teeb ci zoo.

High-brightness ncaj qha LED backlight yog tsim los ntawm cov ntu hauv qab no:

(1) Ob txoj kab hluav taws xob sau ua ke ntawm 48 LEDs nruab rau ntawm cov tub ntxhais hlau luam tawm Circuit Court board;

(2) Lub thawv hlau nruab nrog cov khoom sib dhos saum toj kawg nkaus LED yog coated nrog diffuse reflection zaj duab xis ntawm sab hauv lub thawv. Tsiv qhov chaw uas tsis muaj qhov ci ntawm LED tom qab zaj duab xis tuaj yeem txo qhov reabsorption ntawm lub teeb thiab ua kom tiav lub teeb ci siab;

(3) Tus commutator nyob rau sab saum toj ntawm cov kab hluav taws xob (LED array), nws txoj haujlwm ua haujlwm yog los tiv thaiv LED ntawm deviating los ntawm axis lub teeb ntawm txoj kev ntawm lub vijtsam. Cov kev rho tawm tuaj yeem ua tau me me, xws li 6 hli, los tiv thaiv cov ntaub thaiv los ntawm cuam tshuam rau lub vijtsam LCD, vim tias cov nyhuv no yuav cuam tshuam rau lub teeb ci ntsa iab ntawm LCD. Txij li qhov loj ntawm commutator sib txawv, nws muaj cov txiaj ntsig ntawm 6% txog 40% ntawm lub teeb ci tawm ntawm LED. Nyob rau tib lub sijhawm, yog tias tus commutator tau ua qhov me me, cov kab hluav taws xob LED tuaj yeem tso rau hauv qhov kab noj hniav zoo tib yam thiab muaj peev xwm. Tsuav tus commutator tau muab kho dua, yuav tsum muaj cov yam ntxwv siab xav tau;

(4) Tsho tiv thaiv ib txheej diffuse emission zaj duab xis nyob rau sab hauv txheej sab saud cov thawv hlau, uas tuaj yeem ua tiav qhov kev cuam tshuam ntawm 30% mus rau 40%;

(5) Qhov ci ua kom zoo ntxiv nyob rau ntawm cov LCDs siv los ua kom qhov ci ci ntawm lub vijtsam;

(6) Lub Lambertian kev xav txog kab noj qab nyob hauv LCD vaj huam sib luag muaj lub iav tsom iav ntawm sab ntsa. 80% ntawm lub teeb tawm los ntawm cov kab hluav taws xob LED yog nyob rau hauv ± 20 ° sib luag rau qhov ntsuas qhov muag thiab tau txhaj rau hauv qhov cuam tshuam ntawm kab noj hniav ntawm azimuth ntawm 360 °. Thaum lub teeb nkag mus rau lub backlight qhov zoo, nws txoj kev ywj pheej yog qhov ua kom siab, thiab thaum tsim nyog lub suab LED coj los siv, kev sib xyaw xim zoo tuaj yeem ua tiav nyob rau hauv txhua qhov kev qhia tam sim saum toj ntawm LED array. Tsuas muaj kwv yees li 5% ntawm lub teeb ncaj qha sab saud LED rau ntawm thaj chaw screen. Txhawm rau txo qis qhov tshwm sim ntawm cov xim ncaj qha saum cov LED, lub commutator yog siv los hloov ua lub teeb thiab rov qab mus rau LED thiab Lambertian kab noj hniav, kom qhov nruab nrab ntawm qhov hluav taws xob ntawm qhov no ntawm lub teeb nce, yog li tsim cov xim sib tov ntxiv, txo cov xim ncaj qha saum toj ntawm LED Cov nyhuv xim.

Lub siab-loj ncaj qha LED backlight tsim los ntawm Tebchaws Asmeskas, Nyij Pooj, Holland, thiab Malaysia siv rau LCD-TV nrog lub vijtsam duab 56cm, thiab nws qhov loj yog 503mm × 282mm. Nws muaj ob lub teeb ci rau sab sau ua ke nrog 48 LEDs, qhov kev ncua deb ntawm ob daim phiaj yog 150 hli, thiab qhov kev ncua deb ntawm LEDs yog 9 hli. Ntawm cov LEDs siv, tag nrho cov luxous flux ntawm 24 liab LED yog 1039lm, tag nrho cov luxous flux ntawm 48 ntsuab LED yog 2436lm, thiab tag nrho cov luminous flux ntawm 24 xiav LED yog 109lm. Lub zog tsav tam sim no ntawm txhua LEDs yog 350mA. Thaum dawb taw tes xim dawb lub teeb ntawm chav tsev kub yog 9000K, lub teeb ua kom zoo yog 33.2lm / W. Thaum cov duab ci kho dua tshiab tsis siv, cov backlight tuaj yeem ua tiav qhov siab ci siab dua 5000cd / m2: yog hais tias lub teeb ci ua kom zoo dua yog siv, qhov ci ntawm 10000cd / m2 tuaj yeem ua tiav. Thaum no cov LED backlight siv nyob rau hauv LCD-TV nrog lub LCD vaj huam sib luag transmittance ntawm 5%, tom kawg tuaj yeem muaj qhov ci ci ntawm 500cd / m2. Cov kev ua tau zoo ntawm cov backlight thiab LCD-TV adopting hom backlight no tau qhia hauv Table 1.

Txoj kev loj hlob sai ntawm LCD-TV ua lag luam tau txhawb nqa txoj kev tshawb fawb thiab kev loj hlob ntawm LCD backlights. Vim tias cov LED backlight rau LCD muaj qhov zoo ntawm lub neej, xim gamut, kev hloov kho thiab lwm yam kev ua tau zoo thiab kev tiv thaiv ib puag ncig, nws tau dhau los ua cov cim tshiab ntawm LCD backlight, uas tam sim no tab tom tsim kho. Cov kev taw qhia kev loj hlob ntawm LED backlight yog qis zog siv hluav taws xob thiab nqi them, lub teeb nrawm dua, lub neej ua haujlwm ntev dua, ci zog, sib dua thiab sib dua. Nrog kev nce qib ntawm micromechanics, microelectronics thiab khoom thev naus laus zis, yuav muaj ntau lub teeb ci LED tshiab rau LCDs hauv cov kev taw qhia kev loj hlob saum toj no.

TFT (Thin Film Transistor) LCD, lossis nyias zaj duab xis tshav siv cov duab transistor LCD, yog ib ntawm cov nquag matrix hom kua siv lead ua qhia (AM-LCD).

Txawv los ntawm TN thev naus laus zis, TFT cov tso tawm adopts" rov-dhau" cov txheej txheem teeb pom kev zoo-txoj kev xav hauv lub teeb pom kev tsis yog los ntawm sab saum toj mus rau hauv qab xws li TN kua siv lead ua, tab sis txij hauv qab mus rau saum. Txoj kev no yog txhawm rau nruab cov kav dej tshwj xeeb nyob sab nraub qaum ntawm cov kua siv lead ua, thiab lub teeb xa tawm yuav nkag mus rau hauv qab los ntawm qis dua polarizer thaum irradiated. Txij li cov hluav taws xob sab saud thiab qis dua ua ke hloov mus rau FET electrodes thiab cov hluav taws xob sib txig sib luag, thaum FET qhov hluav taws xob raug qhib, kev ua haujlwm ntawm cov kua siv lead ua kua kuj tseem yuav hloov. Lub hom phiaj ntawm kev tso tawm tuaj yeem ua tiav los ntawm kev sib kis lub teeb thiab lub teeb xa hluav taws xob, thiab lub sijhawm teb tau zoo heev txog li 80ms. Vim tias nws muaj qhov sib piv zoo dua thiab cov xim nplua nuj ntau dua li TN-LCD, lub vijtsam hloov kho lub nrawm kuj tseem nrawm dua, yog li TFT feem ntau hu ua" tseeb xim" ;.

Piv nrog DSTN, lub ntsiab tseem ceeb ntawm TFT-LCD yog los txhim kho lub tshuab hluav taws xob uas hloov pauv ib lub nrig rau txhua lub pixel. Vim tias txhua lub pixel tuaj yeem tswj tau ncaj qha los ntawm dot pulses. Yog li ntawd, txhua lub node yog qhov kev ywj pheej thiab tuaj yeem tswj tau txuas ntxiv. Cov qauv tsim no tsis tsuas yog txhim kho qhov kev teb ceev ntawm lub vijtsam tso saib, tab sis tseem tuaj yeem tswj cov qib grey qib, uas yog vim li cas TFT cov xim muaj tseeb dua DSTN.

Tam sim no, cov tuam ntxhab khoos phis tawm feem ntau siv TFT-LCD hauv lawv cov khoom. Ntxov TFT-LCDs thaum ntxov siv nyob rau hauv kev tsim cov phau ntaw computers. Txawm hais tias TFT muaj qhov ua tau zoo dua DSTN thaum lub sijhawm ntawd, vim yog cov txheej txheem ntawm kev ua haujlwm, TFT-LCD tseem muaj qhov sib txawv loj nrog cov tsoos CRT cov lus hauv lub sijhawm teb, qhov ci ntsa iab, thiab pom lub kaum ntse ntse. Tsis tas li ntawd, qhov tsis tshua muaj txiaj ntsig tau dhau los ua rau nws tus nqi siab, ua rau lub desktop TFT-LCD tsis muaj qhov ua kom tsis muaj zog.

Txawm li cas los xij, nrog kev tsim kho thev naus laus zis txuas ntxiv, qhov kev txhim kho txuas ntxiv ntawm qhov tawm ntawm qhov tawm ntawm cov txiaj ntsig, thiab qhov tshwm sim ntawm qee qhov thev naus laus zis tshiab, TFT-LCD tau ua tiav tau zoo nyob rau lub sijhawm teb, sib piv, ci ntsa iab, thiab pom cov ces kaum, coj lawv los ze rau kev lig kev cai. Cov kis ntawm CRT saib. Tam sim no, lub sijhawm teb ntawm feem ntau cov tsom iav LCD saib tau zoo dua rau hauv qab 50ms, uas tau qhib txoj hauv kev rau LCD los ua lub hauv paus tseem ceeb.