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Taw qhia ntawm LCD vaj huam sib luag tso hom

Jun 26, 2018

Taw qhia ntawm LCD vaj huam sib luag tso hom


1. Luv qhia txog cov kua siv lead ua kua

  • Cov kua siv lead ua kua dej yog qhov nruab nrab ntawm cov kua qaub qaum thiab cov qov heev kom siv tau. Nws muaj qhov dej ntawm cov kua thiab cov anisotropy ntawm cov crystal. Nws yog ib qho kua dej nrog kev txiav txim tsis raws cai.

  • Thawj cov kua siv lead ua kua tau pom los ntawm Austrian botanist Leni FM (F.Reinitzer) hauv xyoo 1888. Tab sis nws tsis yog txog 1971 tias LCD kev lag luam nkag lub sij hawm ntawm kev loj hlob tom qab TN LCD nkag. Nrog rau kev tsim cov tshuab thev naus laus zis thiab lub tswv yim ntawm lub tshuab ua kom tiav, lub tshuab TFT-LCD pib tsim tawm, thiab pib hauv Nyij Pooj thaum ntxov 90s. Industrialization.



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(1) kua crystal peb hom loj:

  • Nematic kua siv lead ua (N theem) (Nenatic ua dej ua kua)
    Nematic kua muaju yog tsim los ntawm pas nrig lossis pas nrig hlau. Qhov ntev ntawm txoj kab ntawm cov lwg me me yog sib luag rau ib leeg. Qhov chaw ntawm molecular centroid yog chaotic thiab chaotic. Vim li no, cov kua nplaum uas muaj cov kua dej muaj ib txoj hau kev thiab ua ib qho kua dej.

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  • Nyob ze cov kua qaub (crystal phase) kua siv lead ua (Cov kua ua kua)
    Qhov ze crystal theem kua Crystal yog tsim los ntawm pas nrig nyiam lossis strip molecules, thiab cov molecules raug teem rau hauv txheej. Qhov ntev ntawm txoj kab ntawm cov molecules nyob rau hauv txheej yog sib luag rau txhua lwm yam, thiab cov kev taw qhia yuav ua perpendicular mus rau txheej los yog hauv ib txoj kev ua kom haum nrog txheej. Vim hais tias ntawm lawv cov txheej txheem tsim kho, lawv cov kev ua ub no nyob ze rau ntawm cov nplais thiab muaj ob txoj kab ke.

     

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  • Tshuaj Cholesteric kua Crystal
    Cholesteric kua crystals tshwm ua kua roj cholesteric tom qab lawv hloov los ntawm esterification los yog halogenated. Cov kua siv lead ua kua molecules no tiaj li, nrog cov txheej txheem molecules nyob hauv cov khaubncaws sab nraud povtseg thiab lwg me ntsis rau hauv cov txheej pov tseg. Cov kev taw qhia ntawm qhov ntev ntawm txoj kab ntawm cov molecules sib txawv me ntsis, raws li kev coj ntawm txheej.
    Thaum twg qhov sib txawv ntawm cov kab xev ntawm qhov ntev ntawm txoj kab xauv raws li qhov kev hloov siab ntawm 360 degree raws li cov qwj coj, lawv rov qab mus rau qhov pib orientation. Lub caij nyoog interlayer nrug yog hu ua lub suab ntawm cov pob siv lead ua kua (Cholesteric).

  • Feem ntau hais lus, pitch ntev P yog nyob ze rau lub tshav puam pom. Lub suab ntawm cholesteric helix qauv yog yooj yim los ntawm lwm yam, tshwj xeeb tshaj yog cov kub. Thaum twg qhov kub hloov, lub suab pauv kuj hloov, uas ua rau lub cholesteric theem tuaj txawv xim. Cov xim kub ntawm cov cholesteric theem tau siv los ntsuas qhov kub thiab txias.

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2. hom zaub hom

    1. TN ua hauj lwm hom (npliag nematic kua siv lead ua)

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1.1Cov qauv ntawm T - L - CD

  • Ib qho zoo nematic kua Crystal np yog sandwiched ntawm lub 1000 iav daim hlau coated nrog ITO (thickness txog li 1000 thickness) pob tshab electrode. Qhov kev ncua deb ntawm epoxy resin thiab iav ntawm tus neeg saib xyuas tus neeg curing thiab tus neeg sawv cev curing mas yog tswj los ntawm cov kab ntsig. Feem ntau, qhov chaw ntawm sab qaum thiab qis iav hauv cov duab teeb mas feem ntau yog plated nrog pob tshab electrodes. Kev ua haujlwm ntawm lub pob tshab electrode yog ntxiv cov teeb liab sab nraud rau cov kua siv lead ua kua, yog li ntawd cov kua siv lead ua kua molecules hauv cheeb tsam uas raug xaiv tau hloov los ntawm 90 mus rau sab nraud ntawm lub dav hlau substrate, kom lub teeb kis ntawm no hloov. Mus ua kom pom cov teebmeem.

  • Orientation txheej: Polyimide

  • Ntsug kaum: 90 degrees

  • Pretilt kaum: 2 degrees txog 3 degrees

  • Chiral cov ntaub ntawv: ntau yam khoom xyaw hauv cov xwm muaj ob hom. Tus qauv ntawm ob lub lwg me me yog tib yam nkaus hauv lub dav hlau, tab sis nyob rau hauv qhov chaw, lawv yog cov sib txawv kiag li. Lawv tsim kev sib raug zoo ntawm cov khoom thiab daim iav. Zoo li daim iav, lawv kuj muab piv rau sab laug thiab sab tes, yog li lawv yog hu ua chiral molecules.

  • Tus qauv dawb dawb: duab tso saib

  • Tus cwj pwm coj tus cwj pwm txawv: pom duab tsis zoo


1.2 Txoj haujlwm ua haujlwm ntawm TN-LCD

 

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2.STN ua hauj lwm hom (ultra twisted nematic kua Crystal)

2.1 Tus qauv ntawm STN-LCD
Feem ntau hais lus, tus qauv ntawm STN-LCD yog tib yam li TN LCD. Thedifference tsuas yog cov ntsiab lus hauv qab no:

  • Loj loj lub sab (180 -270 degrees);

  • Siab pretilt kaum (tsawg dua 20 degrees);

  • Ob lub ncov qaumteb qab ntsev ntawm lub teeb siab yog qhia tshwj xeeb.

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2.2 FSTN (Cov Yeeb Yeeb Zaj Yeeb Yeeb Yim Yim Yim Super Nuv Ntses)

  •   Lub plag txheej ntawm cov kua qaub ntawm cov kua qaub feem ntau muaj ib cov nyiaj them nqi zog, uas feem ntau yog ua los ntawm polymer thiab muaj ib lub noob txiv ntoo. Thaum lub teeb ci thiab lub teeb pom kev zoo los ntawm cov nyiaj them poob haujlwm, qhov ntxiv theem sib txawv yuav raug tsim tawm, kom lub sijhawm ntawm o lub teeb thiab lub teeb ci yuav raug qeeb lossis them rov qab, yog li hloov kev cuam tshuam xim ntawm lub teeb taws polarized. Hauv cov kua siv lead ua kua hluav taws xob, kev them nyiaj hli raug siv los tshem tawm cov kev cuam tshuam xim ntawm lub teeb nyob rau hauv lub teeb.

  • Cov nyiaj xauj tsev hauv FSTN-LCD tuaj yeem nyob hauv qab hauv qab lub polarizer lossis rau saum lub ncov qaum, ib lossis ob daim. Qee qhov ob zaj duab xis film tshuab kuj ua rau lub luag haujlwm ntawm cov neeg ua haujlwm hauv tib lub sijhawm, uas tseem muaj lub luag haujlwm ntawm cov naam tawg, yog li ntawd qhov nce ntawm lub kaum ntse ntse kua khoom tsis cuam tshuam rau cov lus teb ntawm cov kua siv lead ua zaub.

  • FSTN-LCD nta: xim dub thiab dawb, lub kaum ntse ntse 800 (raug), ntau tsav nruab nrab txog 480: 1 (theem / ntu), qhia txog lub sijhawm 250 msec ntawm 4.5V (qis dua TN-LCD).

 

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  • Cov kua nplaum uas muaj kua nplaum (DSTN-LCD) nrog lub thawv rau sab saum toj yog thawj cov xim dub thiab xim dawb. Qhov sib txawv ntawm DSTN-LCD loj tshaj plaws thiab cov kua nplaum uas muaj kua nplaum (super crystal display) yog tias nws muaj ob txoj hlua khoob ntawm cov khoom siv ua kua.

  • Cov kua siv lead ua kua saum toj no yog ib qho kua nplaum uas muaj kua nplaum ua kua. Cov kua dej qab ntsev li hauv qab no, uas yog, tsis muaj electrode thiab tsis muaj lub cav tsis muaj puv nkaus xwb uas siv cov dej siv lead ua kua, cov kev taw qhia ntawm cov khoom siv qis thiab cov kua qis hauv cov thawv rau sab nraud. Cov kua dej ua siv hauv qab no yog lub thawv rau kev them nyiaj. Thaum lub teeb ci thiab lub teeb ci dhau ntawm lub thawv nyiaj, qhov ntxiv theem qhov txawv yog tsim, kom lub sij hawm ntawm lub teeb ci thiab lub teeb ci. Txoj hauj lwm yuav raug qeeb los yog nyiaj xiam oob khab, uas tshem tawm cov kev cuam tshuam xim ntawm lub teeb taws polarized thiab ua kom pom cov nyhuv dub thiab dawb.

  • Cov yam ntxwv ntawm DSTN - LCD:
    Qhov zoo tshaj: zoo tshaj STN, FSTN; yuav tau them rau qhov kev hloov ntawm qhov sib txawv los ntawm kev hloov kub.
    Reaction ceev: ib qho tseem ceeb nce.
    Xim thiab lauj kaub: feem ntau, LCD qhia me ntsis liab, ntsuab lossis xiav, thiab DSTN - LCD tsis pom kev zoo no.
    Lub kaum ntse ntse ntawm saib: lub kaum sab xis pom zoo yog loj

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  • COLOR STN yog xim xim (xim xim) rau ntawm cov tshuaj STN, uas faib cov pixel ntawm monochromatic zaub matrix (pixel) rau hauv peb daim duab pixels (sub-pixel), thiab xim lim pom xim liab, ntsuab thiab xiav 3 xim los ntawm cov xim lim, thiab ces qhia ntau yam xim ntawm harmonic ntawm peb cov xim piv.

2.5 STN teeb lub teebmeem

  • STN series cov lus qhia yog hloov los ntawm cov khoom sib luag. Vim li no, ntau yam kev cuam tshuam cov xim tsis muaj teeb meem nyob hauv cov zis lub teeb.

  • Hom daj: daj hauv lub xeev tsis xaiv (xim daj). Hauv lub xeev xaiv, nws yog xim dub.

  • Xim hom: cov xim nyob hauv qhov tsis xaiv lub xeev yog nplav ntsuab (tom qab yog xiav xiav) thiab xim tsis muaj xim (dawb) hauv lub xeev xaiv.

2.6 STN-LCD tshuab dub-thiab-dawb

  • Qhov tseem ceeb: nws yog nyob ntawm xiav hom nyob rau hauv STN zaub hom, siv dub ob - kev taw qhia xim los yog xiav xim - daj ob - kev coj ua xim kom tom qab xiav keeb kwm yav dhau dub. Tus qauv thiab kev siv tshuab ntawm hom tshuaj ntsuam no yeej zoo ib yam li cov xiav hom STN zaub.

  • Lub Neej Phais Nyiaj: muaj ob hom: ob lub lauj kaub npo LCD (DSTN) thiab xaj phaj sij (FSTN).

2.7 TFT (Thin Film Transistor)

  • TFT-LCD qauv

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Cov kua siv lead ua los ntawm TFT-LCD yog TN (Twist Nematic) kua siv lead ua kua, thiab kua siv lead ua kua molecule yog elliptical

      

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2.7.1 CF teeb tsa

Cov qauv ntawm cov xim muaj xim yog tsim los ntawm iav substrate (iav Substrate), dub matrix (Dub Matrix), xim txheej xim (xim xim), ib txheej txheej (Tshaj Tsho), thiab ITO cov yeeb yaj kiab. Rau cov dav hlau npuas npib TFT, cov qauv ntawm cov ntxaij lim dej muaj nyob rau hauv qab no.

   

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CF Pixel Array

Mosaic :: zaub AV dynamic duab

Txoj kab ncaj ncaj: ntau zaus tso saib cov duab ntawv, (Ceeb toom phau ntawv)


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TFT ua hauj lwm txoj cai:

TFT yog 13 lub davhlau ya nyob twg. Nws tuaj yeem suav tias yog hloov hauv LCD daim ntawv thov.

Cov kev ua ntawm lub LCD module zoo ib yam li ib lub kaus mom, thiab tus nqi hluav taws xob ntawm lub capacitor yog hloov tshiab / tswj los ntawm ON / OFF ntawm Kev Hloov.

Thaum SW ON, qhov teeb liab sau tseg (ntxiv thiab kaw tseg) rau cov kua siv ua kua dej ua kua, thiab lwm lub sij hawm SW OFF, lub xaim hluav taws xob xau ntawm cov kua siv lead ua kua tau raug tiv thaiv tau.

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(1) Vgs> Vth: qhov teeb meem kev nyeem ntawv

Lub TFT module muab lub rooj vag voltage (G) qhov tsim nyog voltage (VGS> pib voltage Vth, txhaj tshuaj), uas ua rau cov dej (a-Si) mus ua kom lub thawv (electrons) los ua qhov dej (S) kev xa.

Lus Cim: Vth yog qhov tsawg tshaj plaws qhov yuav tsum tau ua kom ntxias cov cab kuj.

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(2) Vgs

Thaum lub Vgs tsawg tshaj qhov pib qhov teeb meem, cov channel tsis qhib thaum lub cab kuj tsis yog vim li cas.

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  1. VG yog scan kab hluav taws xob, VID yog teeb liab qhov hluav taws xob, uas yog ntxiv rau rooj vag thiab qhov chaw ntawm TFT.

2. hauv T1 sij hawm sau (xaiv lub sij hawm kab rov tav) TFT ON, VP lub peev xwm pixel VP yuav raug them nyiaj rau VID. Nyob rau lub sij hawm sau ntawm T2 (tsis xaiv) TFT OFF, thaum lub caij ntawm OFF, VP yuav ua rau Delta V. Qhov loj ntawm cov delta V muaj feem xyuam rau cov kab mob cab CGD ntawm TFT Cheebtsam thiab qaum ncej, yog li ntawd cov cab Lub cev muaj peev xwm raug tshem tawm hauv cov qauv tsim thiab txheej txheem.

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3. lub dav qhib saib technology

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1. kev tawm tswvyim dav dav:

TN + Yeeb yaj duab theem nyiaj tau los

Hauv-Qhov Hloov Chaw (IPS) hom (Hitachi Super-IPS thiab niaj hnub hluav taws xob FFS (Fringe Field Switching) LCD hom yog IPS txoj kev txhim kho).

Hom Vertical Tuab Sib Luag (MVA) hom (lub PVA (Patterned Vertical Alignment) hom ntawm Samsung Corp thiab ASV (Siab Super V) hom ntawm Sharp Co yog ib qho kev txuas ntxiv ntawm cov qauv)

Lwm tus yog Panasonic OCB (Optical Compensated Birefringence) thiab NEC SFT (Super-zoo TFT) technology thiab lwm yam.

2. TN + Yeeb yaj duab theem them nyiaj hom

Hauv TN qauv, lub xeev tsaus ntuj yog lub xeev lub xeev. Ntawm qhov teeb meem kub cev, cov kua siv lead ua kua molecules nyob nruab nrab ntawm lub thawv ntim hauv nruab nrab ntawm lub thawv ntim rau lub substrate, hos cov txheej txheem nyob ze ntawm lub substrate yuav qis qis dua thiab yuav qeeb, sib sau kev sib xyaw uas taw cov kev taw qhia ntawm vector raws lub thawv thickness.

Cov txheej txheem ntawm qhov membrane yog siv rau cov kua hluav taws xob ua kua. Thaum cov kua siv ua kua dej kua qaub, cov hluav taws xob (los yog sib nqus field) yog siv ua ntej qhov curing ntawm cov kua hluav taws xob ua kua. Nyob rau hauv qhov kev txiav txim ntawm dual lub tebchaw (lossis magnetic field) thiab lub zog ntawm lub hom phiaj orientation, lub disk zoo li kua siv lead ua kua molecules tsim ib qho kev sib xyaw ntawm qhov chaw seem ntawm qhov kev ntsuas uas pheej tsis hloov raws li cov kev tswj tuab, uas yog raws li xyaw orientation ntawm lub molecules nyob rau hauv lub kua siv lead ua kua. Tom qab ntawd, nyob rau hauv qhov kev txiav txim ntawm lub tebchaw fais fab (lossis magnetic field), UV muaj zog kom cov kev taw qhia kom ruaj ruaj.Qhov txheej txheem ntawm lub membrane yog siv rau cov dej ua kua siv coj los ua kua. Thaum cov kua siv ua kua dej kua qaub, cov hluav taws xob (los yog sib nqus field) yog siv ua ntej qhov curing ntawm cov kua hluav taws xob ua kua. Nyob rau hauv qhov kev txiav txim ntawm dual lub tebchaw (lossis magnetic field) thiab lub zog ntawm lub hom phiaj orientation, lub disk zoo li kua siv lead ua kua molecules tsim ib qho kev sib xyaw ntawm qhov chaw seem ntawm qhov kev ntsuas uas pheej tsis hloov raws li cov kev tswj tuab, uas yog raws li xyaw orientation ntawm lub molecules nyob rau hauv lub kua siv lead ua kua. Tom qab ntawd, nyob rau hauv qhov kev txiav txim ntawm lub teb fais fab (los yog cov sib nqus field), UV muaj zog kom cov kev taw qhia kom ruaj khov.

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Cov txheej txheem ntawm qhov membrane yog siv rau cov kua hluav taws xob ua kua. Thaum cov kua siv ua kua dej kua qaub, cov hluav taws xob (los yog sib nqus field) yog siv ua ntej qhov curing ntawm cov kua hluav taws xob ua kua. Nyob rau hauv qhov kev txiav txim ntawm dual lub tebchaw (lossis magnetic field) thiab lub zog ntawm lub hom phiaj orientation, lub disk zoo li kua siv lead ua kua molecules tsim ib qho kev sib xyaw ntawm qhov chaw seem ntawm qhov kev ntsuas uas pheej tsis hloov raws li cov kev tswj tuab, uas yog raws li xyaw orientation ntawm lub molecules nyob rau hauv lub kua siv lead ua kua. Tom qab ntawd, nyob rau hauv qhov kev txiav txim ntawm lub teb fais fab (los yog cov sib nqus field), UV muaj zog kom cov kev taw qhia kom ruaj khov.

Qhov ib nrab asymmetry yog qhov tshwm sim uas cov nyiaj xiam oob khab ua tsis tiav rau qhov nyuaj orientation ntawm kua siv lead ua kua molecules hauv lub thawv. Vim tias qhov nyiaj them raug mob ntawm cov nyiaj them poob haujlwm yuav txiav txim siab raws li cov nyhuv ntawm qhov muaj qhov tsis sib haum xeeb, qhov kev hloov ntawm cov kua siv lead ua kua molecules hauv lub thawv muaj ntau dua thaum nruab nrab grey qib tau muab tso tawm, thiab qhov kev kho qhov muag ua ntsuas ntawm qhov kev ntsuas qhov hluav taws xob, thiab qhov nyiaj tau tiav tsis tiav.

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TN + zaj duab xis kev nta:

  1. yog qhov pheej yig, qhov zoo yog qhov siab heev.

2., qhov kev txhim kho ntawm cov kab zauv tsawg yog tsis tseem ceeb.

3. qhov sib txawv ntawm qhov sib txawv thiab qeeb teb ob qhov teeb meem nyob tsis hloov.

4. Tsuas yog siv cov khoom qis kawg.

3.IPS hom

IPS yog lub npe ntawm "Hauv Kev Hloov Txoj Kev Hloov" (kev sib tsoo ntawm tes).

IPS technology yog ib qho qauv siv los ntawm Hitachi Nyiv nyob rau hauv 1996.

Hauv 1998, Hitachi tau pib S-IPS (Super-IPS). Dhau li ntawm cov cuab yeej thawj ntawm IPS, cov tshuaj tiv thaiv tau raug kho dua.

Nyob rau hauv 2002, Hitachi launched AS-IPS, uas tau zoo heev tuaj hauv nam piv.

Tam sim no, IPS cov tuam txhab: Hitachi, LG, Hanyu xim siv lead ua, IDTech (sib koom ua ke ntawm Chi Mei Electronics thiab Nyiv IBM)

Cov qauv ntawm cov qauv:

1. Cov nematic kua siv lead ua kua molecules nrog dielectric anisotropy yog npaj rau cov teeb uas sib npaug ntawm qhov sib npaug ntawm cov substrates. Cov khoom siv hluav taws xob hauv hluav taws xob thiab cov electrodes yog siv los tsim cov transverse hluav taws xob los hloov lub qhov cub ntawm azimuth ntawm qhov muag pom ntawm cov kua siv lead ua kua molecules hauv lub dav hlau ntawm lub substrate, thiab tswj cov kev xa mus.

2. Lub polarization ntawm ob lub ncov qaum ntuj yog qhov nruab nrab, thiab txoj kev coj ntawm lub ncov ntawm polarizer yog cov uas tig mus rau cov kua siv ua kua ua kua rau ntawm qhov qis sab substrate.

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Ua hauj lwm txoj cai:

1. kev sib txuas: lub thawv polarizing ntawm lub ncov qaumteb qab zib yog cov mus ua kua dej ua kua tshuaj coj los ua cov vector, thaum lub teeb ncov ntawm lub ncov ntawm lub ncov yog siv los ua cov dej ua kua ntawm lub substrate, lub polarization lub xeev ntawm lub npov yuav tsis hloov . Nyob rau tib lub sijhawm, cov kua siv lead ua kua molecules zoo ib yam li cov nplaim, yog li ntawd txoj kab hluav taws xob ci ntsa iab tuaj tsis tau los ntawm cov kua siv lead ua kua. Kev hloov ua muaj tshwm sim; lub sab nraud thiab sab nraud polarizers yog orthogonally txheej txheem kom tus kabmob txoj kab sib dhos tsis muaj teeb meem los ntawm lub ncov qaum ntuj, kom lub xeev tsaus nti nyob ze rau cov yeeb nkab dub tau.

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2. kev siv lub zog: vim yog lub tshuab hluav taws xob ntawm cov electrode thiab cov electrode hauv cov duab ua ke, cov kua siv lead ua kua molecules nrog - Delta e yuav tig mus rau txoj kab kev taw qhia ntawm cov hluav taws xob, thiab lub kaum sab xis ntawm qhov sib txawv lub kaum sab xis ntawm cov khoom siv voj voog thiab cov polarization axis ntawm qhov xwm txheej sab nrauv. Cov duab tshav duab polarized lub teeb kis los ntawm iav substrate thiab tig mus rau hauv elliptical polarized lub teeb ua ntej nkag mus rau lub ntes, kom ib feem ntawm lub teeb tau tua los ntawm lub ntes kom tau ib lub ci ci.

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IPS qauv nta:

  1. yog tsis muaj kev hloov ua ntu zus hauv txoj kev taw qhia los yog txoj kab nruab nrab, nyob hauv thaj tsam ntawm 80.

2. Tus nqi hluav taws xob qis siab heev.

3. Lub cim ntawm qhov ntsej muag ntawm lub kaum sab xis pom tsis zoo. Qhov ntau ntawm lub kaum sab xis pom ntawm qee tus zwm txwv tsis txaus.

4. Qhib tus nqi qhib, txo kev sib kis

5. Lub sijhawm teb sai yog qeeb.

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Qhib Tus Nuj Nqi ( Qhov Tshuav Qhov Nruab Nrab):

Lub aperture piv yog qhov zoo qhov chaw twg txhua pixel yuav tsum translucent faib los ntawm tag nrho cov cheeb tsam ntawm lub pixel. Qhov siab dua qhov qhib qhov sib npaug, lub zog zuag qhia tag nrho.

IPS :, vim yog lub hauv siab thiab qis dua electrodes (feem ntau Cr lossis Al) nyob rau sab qis substrate, txo cov nqi qhib thiab txo cov kev sib kis ntawm cov teeb meem sib kis, uas ua rau qhov kev sib txawv ntawm qhov sib txawv (qhov ci ntsa iab ntawm lub teeb ci ntsa iab yog nce los ntawm qhov sib txawv ntawm hom TN).

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S-IPS:

Hauv pixel ntau, cov zuag ua zoo li tus electrode yog tais mus rau hauv cov qauv dentate rau ob thaj tsam uas tau tig tig thiab txoj cai ntawm cov kua siv lead ua kua molecules, yog li ua qhov segmentation orientation los pab kom them nyiaj rau cov yam ntxwv ntawm lub kaum ntsej muag.

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S-IPS hom kua siv lead ua lub thawv saib daim duab:

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4.VA hom (ntsug orientation hom):

Thaum tsis muaj cov ntaub ntawv thov, txhua cov kua siv lead ua kua molecules yog teem caij rau ntawm lub substrate.

Thaum lub siab tshaj qhov siab tshaj qhov chaw pib, qhov ntev ntawm txoj kab ntawm cov txheej txheem ntawm cov lej qis dua yuav ua rau lub kaum sab nraud tsuas yog cov kua ua kua dej nyob ze ntawm lub npoo ntawm lub substrate. Lub kaum sab xis nce nrog qhov kev nce ntawm qhov voltage, kom lub teeb ci tuaj rau sab nraud yog ib lub txiv neej thiab ua rau elliptically polarized lub teeb thiaj li hais tias yog ib feem ntawm lub teeb tau tawm ntawm lub ntes. Qhov kev siv ntawm kev sib kis tau yog nyob ntawm seb qhov loj ntawm qhov siv cov lus thov

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VA qauv nta:

1. Cov lus teb yuav nce siab tshaj qhov ntawm TN hom qub. Vim hais tias hom VA tshem tus cwj pwm ntawm kua siv lead ua kua molecules, kev kho cov kua siv lead ua kua molecules xwb hloov ntawm ob kab rov tav thiab ntsug xeev.

2. Tus ciav hlau electro-optic yeej tsis muaj kev sib cais xim ze qhov chaw pib. Nyob rau hauv rooj plaub ntawm qhov xwm txheej teeb, zoo heev dub thiab dawb cov lus qhia yuav muab tau nyob rau hauv cov kev coj ntawm cov qauv ntsuas.

3., raws li nyob rau hauv dav dav hom TN, VA hom kuj muaj kev tsis txaus siab ntawm lub zais qhov muag pom thiab lub tsho asymmetric saib thaum lub zeeg gray duab tso tawm.

VA tshuab chaw tsim khoom siv:

SHARP CPA

Fujitsu MVA (P-MVA)

Samsung PVA (S-PVA)

Optoelectronic MVA

Kev siv ntau lub tswv yim siv technology (Multi-Technology Technology)

nkaus xwb

Ob chav no: 2 txoj kev pixel segmented

Plaub sau: 4 txoj kev pixel segmented


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MVA (ntau txoj haujlwm ntsug kev siv tshuab)

Tsim los ntawm Fujitsu Corporation, tsis muaj kev xav tau kev sib txhuam.

ADF Technology (Tuaj Sau Tsiaj Ntawv Tuaj: Nws pib sau)

Thaum tsis ntxiv qhov hluav taws xob, qhov feem ntswg ntawm feem ntau cov kua qaub tsim kua hlau yog tsim (ob peb lub lwg me me nyob hauv qhov kev txiav txim ntawm txoj kab nqes); Thaum cov pa hluav taws ua ntawv thov, lub tshuab fais fab yuav tsum tau nyob ib ncig ntawm lub me me protruding. Ua ntej, kua siv lead ua kua molecules 1 thiab 1 'ntawm qhov me me protruding yog rotated hauv cov kev taw qhia ntawm illustrated cov kev taw qhia, tus los ntawm kev sib hloov ntawm 1 thiab 1'. Cov kua siv lead ua kua molecules puag ncig lub me me protruding (2, 2 'hauv daim duab 7, 3, 3' thiab 4, 4 ') kuj tau tig rau tib qho kev ua 1, 1, kom tag nrho cov kua siv lead ua kua molecules nyob rau hauv cov kua siv lead ua kua muaj peev xwm nrhiav tau ob hom kev hloov khov dub.


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MVA hom ua haujlwm txoj cai:

Thaum lub hwj chim tsis ntxiv, feem ntau ntawm cov kua qaub deg ua kua molecules feem ntau yog rau cov qauv MVA-LCD, vim hais tias sab qaum thiab qis dua polarizers yog orthogonal, yog li ntawd lub tiaj tsaus yog thaum lub siab thiab qis dua polarizers yog orthogonal.



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Thaum twg qhov kev siv hluav taws xob, cov tawb fais fab yog tsim ntawm nruab nrab thiab qis dua protrusions, uas ua rau cov kua siv lead ua kua molecules ua tus qauv. Vim yog cov khoom siv ua kua dej ua kua ntawm cov kua siv ua kua ua kua, lub teeb lub thawv polarized kis tau los ntawm cov dej ua kua pleev xim thiab tig mus rau hauv elliptical polarized lub teeb, kom lub teeb yuav pom nyob rau hauv lub teeb ntawm lub ntes. Tsis tas li ntawd, raws li lub teb hluav taws xob nce, qhov kev siv ntawm lub teeb kis tau zoo dua.

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Kev npaj me me kev tsim qauv me me:

Qhov me me protrusion ntawm lub sab saud thiab qis dua cov phiaj xwm txheej yog nyob rau hauv parallel Z cov duab sib luag rau txhua lwm yam, thiab cov sab nraub qis thiab sab tau teem caij ua ke. Nyob rau hauv no txoj kev, thaum lub voltage yog hos, lub kua siv lead ua kua molecules tau 4 hom kev qhia txawv, uas yog hais, 4 thawj. Nws muaj pov thawj tias nyob rau hauv qhov kev kho no, thaum lub nqus ntawm lub ncov ntawm lub ncov siab tuaj txog ntawm 45 txoj kab ntawm cov kua siv lead ua kua, qhov siv qhov teeb meem ntawm teeb meem yog qhov loj tshaj plaws.

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Cov yam ntxwv ntawm MVA tus qauv:

1. dav dav pom, zoo ib qho txawv, ceev ceev teb: ob qho tib si kab rov tav thiab lub kaum sab xis pom tau ntau tshaj 80 lossis tshaj saud, thiab muaj suab npe, txawm tias nyob ntawm 45 los yog ntau tshaj 50; qhov lus teb ceev kuj tseem nyob ntawm 25ms; yog tsis muaj kev txiav txim siab hloov tshwm sim hauv MVA-LCD.


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2. Kev cob qhia tsis xav tau kev sib txhuam thiab siab yield: daim ntawv thov ntawm ADF technology txuag cov txheej txheem kev sib txuam rau hauv kev ua tus tsim MVA-LCD vaj huam sib luag, ua kom luv luv cov txheej txheem; nyob rau tib lub sijhawm, nws kho qhov zoo vim qhov teeb meem uas feem ntau pib los ntawm txoj kev sib txhuam kev sib tw.

Kev sib piv ntawm peb qhov dav dav pom kev siv tshuab

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1. Hom IPS tau tsim los ntawm Hitachi, thiab tam sim no NEC thiab Nokia siv cov kev siv tshuab no. Qhov loj tshaj plaws ntawm qhov qauv no yog qhov uas nws tuaj yeem ua rau lub kaum sab xis ntawm qhov pom ntawm qhov + 85, tab sis lwm qhov kev ua tau zoo ntawm tus qauv no tseem tsis tau zoo dua: lub sijhawm teb tuaj txog 30 milliseconds. Lwm qhov teeb meem ntawm IPS hom yog tias kev tswj ntawm cov kab ua lag luam hluav taws xob ntawm cov kua siv lead ua kua dej yuav tsum muaj qhov loj qhov me me kom ua tau, yog li ntawd lub hwj huam noj ntawm cov zaub ntaus ntawv nce.

2. Hom kev xaiv MVA yog tsim los ntawm Fujitsu. Tam sim no, Taiwan tau raug tso cai siv nws. Hom MVA yuav tsum yog txoj kev daws teeb meem rau kev saib dav dav thiab ceev teb ntawm cov kua siv lead ua kua. Nws lub kaum sab xis pom tau siab li 160 degrees, uas yog sib npaug ntawm cov tshuaj CRT zaub. Nws muaj peev xwm muab lub sij hawm luv luv (20 ms) tshaj TN + Yees duab hom thiab IPS hom. Qhov no tseem ceeb heev rau kev yees duab. Tsis tas li ntawd, qhov sib piv tau zoo heev, txawm tias nws yuav hloov nrog qhov kev hloov ntawm kev xav.

IPS dav hlau tswj hom yog lub zoo meej tov rau lub dav dav saib. Yeej, daim duab yuav tsis raug distorted obviously nrog cov kev hloov ntawm lub kaum sab xis pom.

MVA yuav ploj mus nrog qhov nce ntawm saib lub kaum ntse ntse. Tus cwj pwm no yog qhov tseem ceeb rau kev txiav txim siab MVA.

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