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Lub Hom Ntawm LCD zaub

Lub Hom Ntawm LCD zaub

Apr 17, 2017

Feem ntau, LCD zaub yog muab faib ua plaub loj pawg raws li cov khoom daim ntawv thov, xws li: Twistwd nematic lcd (TN-LCD), super twisted nematic lcd (STN-LCD), nyias zaj duab xis transistor-LCD (TFT-LCD) thiab tsawg-kub polycrystalline silicon-kua siv lead ua zaub (LTPS-LCD), nyob rau TN thiab STN yog nyob rau hauv qhov tseeb lub hom LCD, thaum TFT thiab LTPS yog qhov sib txawv hloov yam, Vim rau hauv thaum ntxov dub-thiab-dawb LCD panels yog passive matrices, ob qho tib si TN thiab STN yuav tshwm sim, thiab peb muaj tam sim no qhia lawv sib txawv.

TN-LCD

Lub torsional nematic kua siv lead ua (TN) molecule faib mus rau hauv khaubncaws sab nraud povtseg ntawm ob conductive tsom-iav, txhua txheej ntawm kua siv lead ua molecules tig ib lub, thiab tus thawj txheej thiab lub xeem txheej ntawm kua siv lead ua molecules tig lub kaum sab xis "tsawg tshaj 90 °". Torsion rau sab-hom kua siv lead ua (TN) ntawm txhua txheej ntawm molecular kev sib hloov ntawm lub kaum sab xis yog me me, nyob rau hauv cov tshuaj seem yus pom peb hu qhov no ua kua siv lead ua qauv "lub zog yog tsawg dua, comparatively ruaj khov", thaum peb thov voltage, LCD yuav sawv rau ntawm iav, kuj ruaj khov TN molecules li yog hais tias "dag nyob rau hauv lub khob molecules, ruaj khov heev thiab xis", li ntawd los ntawm lwm voltage cov tshuaj tiv thaiv yog qeeb qeeb, nws yuav siv sij hawm ib tug ntev lub sij hawm mus sawv rau ntawm iav, qhov no LCD zaub black- thiab-dawb cov tshuaj tiv thaiv kev ceev yog qeeb qeeb.

Zoo: Tsis tshua muaj tsav voltage, tsis tshua muaj zog noj, tsis tshua muaj ntau lawm nqi.

Disadvantage: Cov tshuaj tiv thaiv kev ceev yog qeeb, muaj lub residual duab ntxoov ntxoo tshwm sim, tsuas suits yuav ua rau tus dub-thiab-dawb zaub.

Daim ntawv: Hauv meter, hluav taws xob tshuab xam zauv, hluav taws xob phau ntawv txhais lus.

STN-LCD

Super twisted nematic kua siv lead ua (STN) molecules yuav tsum tau muab faib mus rau hauv ib tug xov tooj ntawm khaubncaws sab nraud povtseg ntawm ob daim ntawm cov iav, lub kua siv lead ua molecules ntawm txhua txheej yuav tig lub kaum sab xis, thiab cov thawj txheej thiab lub xeem txheej ntawm kua siv lead ua molecules "kev sib hloov lub kaum sab xis ntau dua 90 degrees (180 degrees rau 240 degrees), raws li muaj nyob rau hauv Daim duab tsib (b) pom. Super twisted nematic kua siv lead ua (STN) ntawm txhua txheej ntawm cov molecular kev sib hloov lub kaum sab xis yog tus loj, nyob rau hauv lub taw tes ntawm view ntawm Science News for KIDS rau cov kua siv lead ua molecules peb hu qhov no "high zog, tsawg stability", thaum peb thov voltage, lub LCD yuav sawv rau ntawm iav, lub STN molecule tsis ruaj tsis khov li molecular "squat rau hauv lub khob, yog heev tsis ruaj tsis khov thiab tsis xis, li ntawd los ntawm cov ntaub ntawv voltage thaum muab piv rau cov tshuaj tiv thaiv sai sai, tam sim ntawd sawv rau ntawm iav, thiab cov kua siv lead ua zaub cov tshuaj tiv thaiv ceev ceev.

Zoo: Cov tshuaj tiv thaiv tus nqi yog sai dua TN, ua lub TFT yooj yim.

Tsis zoo: Cov tshuaj tiv thaiv kev ceev yog tseem tsis ceev ceev txaus, tsuas haum rau gray teev los yog siab xim zaub.

Daim ntawv: Xim mobile xov tooj, xim tus kheej cov kev pab (PDA), cov koob yees duab.

TFT-LCD

Nyias zaj duab xis transistor (TFT) tswj ntawm txhua pixel yog kev qhia ncaj qha rau ntawm iav, peb siv cov pa tshuaj deposition (CVD) txoj kev loj hlob ntawm ib tug txheej ntawm amorphous silicon rau iav saum toj no lub nyias zaj duab xis transistor (TFT) kev qhia rau cov amorphous silicon saum toj no, vim hais tias lub iav substrate yog "amorphous" yog li ntawd ua tus tes hloov qhov nyob rau hauv lub saum toj no yog cov "amorphous". Lub iav hloov kub "(Trnasition kub)" hais txog 300 DEG C, tus transformation kub yog ua tau "softening kub", uas yog cua sov mus txog rau 300 DEG C iav yuav pib mus soften, yog li tus txheej txheem kub yuav tsis pub tshaj 300 DEG C, los yog cov mos mos tawm iav. Nyob rau hauv tus txheej txheem ntawm kub qis dua 300 DEG C nyob rau hauv lub zwj ceeb ntawm kev siv tshuaj vapor deposition (CVD) nyob rau hauv nyias zaj duab xis transistor saum toj no lub iav txiav txim siab "amorphous silicon" (TFT), lub npe hu ua lub "low kub ntawm amorphous silicon (Low kub amorphous silicon) ", yog dab tsi peb hu rau ib tug" nyias zaj duab xis transistor kua siv lead ua zaub (TFT LCD) "yog cov kev siv ntawm cov uas tsis muaj kub amorphous silicon txheej txheem.

Zoo: Cov tshuaj tiv thaiv kev ceev yog sai dua lub STN, yuav ua rau tag nrho cov xim zaub.

Tsis zoo: Nyias Zaj duab xis transistor ntau lawm muaj teeb meem, raug nqi ntau tshaj li qhov STN siab conductivity, amorphous pob zeb ntais, yog li tsav tsheb voltage yog ntau dua, amorphous silicon conductivity yog tsis zoo ces muaj hwj huam noj, amorphous silicon nyias zaj duab xis transistors loj, sab qhib tus nqi.

pplication: Full-xim LCD, phau computer, LCD TV.

Nyob rau hauv qhov tseeb, siv cov polysilicon ntau lawm saib yuav tau muab faib mus rau hauv "high kub poly silicon (HTPS)" thiab "Tsis tshua muaj kub poly silicon (LTPS)" Ob hom:

High kub poly silicon

Vim hais tias ntawm cov nyias zaj duab xis transistor kev qhia siv amorphous silicon (TFT), cov neeg pluag conductivity, qeeb ua hauj lwm ceev, yog hais tias peb xav kom cov kev ceev ntawm kev ua hauj lwm, koj yuav tsum siv lub "Silicon" zoo tshaj plaws, hmoov tsis, vim hais tias cov iav yog amorphous, nws yog tsis tau loj hlob nyob rau hauv lub khob puag phaj nyob rau amorphous silicon, zaum xav tias ib tug zoo lub tswv yim, yog siv "annealing (Anneal)", cov khoom khoom kub, ces txias maj mam txoj kev polycrystalline. peb yuav tsum "iav thiab amorphous silicon nyias zaj duab xis" mus rau hauv ib tug kub cua sov, cua sov rau 600 DEG C, thiab ces maj mam txias mus rau chav tsev kub, koj yuav tau ua ib tug "txheej txheem" ntawm lub polycrystalline silicon nyias zaj duab xis, hu ua "kub polysilicon (HTPS) ".

Lub iav hloov kub ntawm txog 300 DEG C, lub iav cua sov mus txog 600 DEG C iav yuav pib muag, li ntawd, nyob rau hauv lub kub polysilicon (HTPS) txheej txheem yuav tsis siv iav raws li substrate yuav tsum conductive khob iav "(iav)" hloov "quartz (Quartz)" rau quartz (Quartz "tus siv lead ua") yog silica, siab melting kub txog li 1200 DEG C, tab sis tus nqi yog siab, thiab qhov loj ntawm lub loj quartz, tus nqe yog ib tug geometric series nce (thiab pob zeb diamond zoo li no), li ntawd, lub siab kub polysilicon (HTPS) yuav siv tsis tau nyob rau hauv loj loj LCD zaub yog tsawg tsawg, thaum ntxov yog siv nyob rau hauv cov kua siv lead ua "projection zaub nyob rau hauv siab daws teeb meem, loj me me LCD vaj huam sib luag, feem ntau yog tsawg tshaj li 3 nti. nyob rau LCD projection zaub yuav tau piav nyob rau hauv kom meej tom qab.

Tsis tshua muaj kub poly silicon

Los ntawm cov kev taw qhia ntawm cov saum toj no yog tsis yooj yim mus nrhiav tau, nyob rau hauv qhov tseeb, peb xav kom "annealing (Anneal)" tsuas yog ib feem ntawm lub nyias zaj duab xis transistor (TFT), lub iav substrate thiab nyias zaj duab xis transistor rau hauv tag nrho cov rhuab kub cua sov yog ruam, tej zaum koj yuav xav xav thiab saib, zoo li cas txoj kev yuav tsuas sov lub nyias zaj duab xis transistor yuav kom tus iav substrate thaum uas tsis muaj kub? Ntse zaum muaj invented ib tug tshiab technology hu ua laser annealing (Laser anneal) ", iav thiab amorphous silicon nyias zaj duab xis" mus rau hauv lub laser annealing tshuab cua sov, siv zog laser teeb meem mus rau lub lens, thiab ces siab rau amorphous silicon zaj duab xis cua kub, cua sov rau 600 DEG C, thiab ces maj mam txias mus rau chav tsev kub, koj yuav tau ua ib tug "polysilicon zaj duab xis", hauv qab no lub laser annealing tshuab cua sov cua txias dej, muaj peev xwm ntawm cov iav substrate yog khaws cia ntawm ib tug kub hauv qab no 300 DEG C, yuav ua li cas xws li ib tug yooj yim txoj kev ntawm koj yog tsis xav?

Zoo: Tus ceev tshaj cov tshuaj tiv thaiv ceev, lub conductivity ntawm polycrystalline silicon yog zoo li kev tsav tsheb voltage yog tsawg dua, polycrystalline silicon nyias zaj duab xis transistors me, li ntawd, cov lus qhib tus nqi yog high school.

Tsis zoo: Laser annealing tshuab yog tsis paub tab, cov khoom tawm los yog tsawg.

Daim ntawv: Full-xim LCD, phau computer, LCD TV.