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Lub hauv paus ntsiab lus ntawm lub thawv polarizing ntawm kua siv lead ua kua

Jun 29, 2018

Lub hauv paus ntsiab lus ntawm lub thawv polarizing ntawm kua siv lead ua kua


Lub hauv paus ntsiab lus ntawm lub teeb nyob rau hauv polarizing thiab polarizing zaj duab xis

Cov neeg feem coob tseem tsis paub txog lub sijhawm "polarizing movie". Yog li ntawd, peb thawj zaug piav qhia txog qhov tshwm sim thiab cov hauv paus ntsiab lus ntawm lub teeb nyob rau lub rooj sib tham.


lub teeb ntsuab
Kev nkag siab ntawm tib neeg lub teeb yuav muab faib ua plaub theem tseem ceeb:

1. Xyoo ntawm Xyoo Xya Caum, Newton pib ua qhov kev tshawb nrig ntawm lub teeb pom kev, thiab nws pom hais tias lub npe hu ua White Light tau ua los ntawm txhua lub teeb xim (Cov Ncua Cov Kob). Yuav kom piav qhia txog qhov tshwm sim no, muaj ntau ntau qhov kev sib cav uas muab los ntawm nws.

2. Xyoo puas xyoo dhau los, Thomas Young siv txoj kev xav ywj pheej los piav txog feem ntau ntawm cov duab phenomena, xws li kev xav, kev tawg thiab kev qis.

Rau 3.1873 xyoo, Maxwell tau pom tias lub teeb tsis muaj qhov hluav taws xob tsis sib xws, uas cov tsis thiab sib nqus tsis muaj sib cais, thiab qhov peb yog mus rau tom teb (E), qhov sib txawv ntawm qhov chaw (H) thiab kev coj ntawm lub tshuab electromagnetic yoj (k).

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4. Nyob rau hauv thaum ntxov xyoo pua Century, Einstein pom tau tias lub zog ntawm lub teeb yuav piav qhia los ntawm qhov kev tshawb xav particle, thiab muab cov quantum kev tshawb xav. Hauv lwm lo lus, lub teeb muaj ob yam ntxwv ntawm kev hloov thiab cov khoom siv ib txhij.

Txij li thaum txoj kev xav ntawm lub teeb nyob rau hauv polarized yog piav qhia los ntawm kev xav ywj siab, tom qab sib tham txog teeb pom kev zoo li lub electromagnetic yoj, thiab thiaj li yuav yooj yim to taub, peb tsuas xav txog nws daim teb hluav taws xob vector E. E ntawm lub teeb uas tsis sib xws yuav tsum muaj nyob hauv daim duab 2. Hauv daim duab 2, ntau yam kabmob sib txawv thiab sib npaug ntawm cov xov hluav taws xob qhia tias E vibrates ntawm lub dav hlau E thiab H, thiab lub sijhawm rau kev ua kom nyob rau hauv tag nrho cov lus qhia yog sib npaug. Thaum txoj kev faib hluav taws xob E tsis sib haum, nws yog hu ua Polarization (Polarization), raws li qhia hauv daim duab 3 raws li ib nrab lub teeb ntsuab, thiab thaum E tsuas vibrates nyob rau hauv ib qho kev coj, nws hu ua linear polarized light (Daim Duab 4). Los ntawm qhov kev pom ntawm vector, thaum cov vectors ntawm tag nrho cov lus qhia hauv daim duab 2 yog kwv yees rau ob txoj kab ntawm X thiab Y, qhov tsis yog lub teeb taws polarizing yuav ua rau ob sab ntsug ua ob kab ntsig txog lub teeb ntsug (Daim Duab 5).

 

Daim duab 2: lub teeb uas tsis tuaj yeem

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Xam phaj 3: ib qho tawg pim qes

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Daim duab 4: txoj kab teeb ci tawm tuaj

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Daim duab 5: txoj kab kev sib ntxub ntxoo kom haum rau txhua tus

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Lub chaw ua khoom ntawm lub teeb ntsuab

Feem ntau hais lus, muaj peb kauj ruam los tsim lub teeb nrheev.

1. ua kom tsis pom kev zoo xws li lub teeb ntsuab (thev 2).

2., peb ua rau lub teeb ci tsis tshua muaj pom nyob rau hauv ob txoj kab sib lawv li Polaris (daim duab 5).

3. pov tseg lub teeb pliaj thiab siv lwm lub teeb taws tuaj (Daim duab 4).

Lub ncov qaumteb tuaj yeem ua rau ob lub ncov qaum, thiab lub tshuab uas tso tawm ib tug hu ua polarizer (Polarizer). Lub polarizer siv tau cov teebmeem xws li kev nqus, kev xav, tawg, diffraction thiab lwm yam teeb meem kho qhov muag los ua qhov sib txawv ntawm lub teeb ntsuab.

Feem ntau, muaj ob peb hom polarizers feem ntau siv:

(1) hom kev xav

Thaum lub teeb yog tig mus rau saum npoo ntawm iav, lub teeb pom kev zoo yuav tsum yog ib feem ntawm polarized. Los ntawm kev siv lub nruam seem ntawm cov iav ntau lub iav, qhov tsis yog lub teeb ci taws tuaj yeem hloov mus rau hauv lub teeb nrug lub cev.

(2) txoj haujlwm yooj yim

Ob daim khob cij muaj calcite raug sib koom ua ke, thiab qhov teeb meem yog teeb tuaj rau hauv ob lub teeb liab, uas hu ua teeb pom kev zoo thiab txawv txawv.

(3) ob lub chromatic microcrystalline

Cov iav me me nrog ob lub xim yog cov xwm yeem tawm hauv cov ntawv pob tshab. Qhov no yog thawj txoj hauv kev ua kom cov duab tho polarizing.

(4) ob chromaticity ntawm polymer

Qhov tseem ceeb tshaj plaws ntawm kev tsim cov duab tho polarizing yog siv cov duab film polymer nrog kev xa xov zoo, kom paub cov qauv ntawm cov membrane thiab nqus ob cov khoom xim. Qhov hom absorbed polarizer no muaj nyob rau hauv Daim Ntawv Ua Yeeb Yam lossis Cov Ntawv Phaj los yog Ntawv, yog li nws yog feem ntau hu ua zaj duab xis Polarizing (Polarizing Film) los yog phaj polarizing (Polarizing Phaj los Sheet) .Txhua nrov nrov English yog Polarizing Lim.

Lub hauv paus chiv keeb ntawm polarizing zaj duab xis

Polarizing zaj duab xis yog tsim los ntawm qiv, tus tsim ntawm Polaroid nyob rau hauv 1938 (Edwin H. Av). Plaub caum tom qab, txawm tias cov duab tho polarizing tau ua ntau qhov kev txhim kho rau cov kev txawj thiab cov khoom siv, cov txheej txheem cov txheej txheem thiab cov ntaub ntawv siv tseem yog tib yam nkaus li uas siv tau rau caum xyoo dhau los. Yog li, ua ntej yuav piav txog tus txheej txheem ntawm cov yeeb yaj duab polarising, nws yog ib qho tseem ceeb heev kom nkag siab txog cov txheej txheem ntawm cov yeeb yam polarizing nyob rau hauv ib txoj kev yooj yim.

Thaum Rand tau kawm Harvard University xyoo 1926, nws tau nyeem ib daim ntawv luam tawm los ntawm ib tug kws kho mob British, Dr. Herapath, xyoo 1852. Nws tau hais tias ib tus menyuam kawm ntawv ntawm Dr. Herapath, Mr. Phelps, uas tau poob qis iodine hauv disarmament of quinine , thiab nws pom hais tias muaj ntau ntau cov xim ntsuab me me ua tam sim ntawd. Cov khoom siv lead hauv pom hauv lub tshuab kuaj kab mob thiab pom raws li hauv daim duab nram qab no: thaum ob zaug siv lead ua sib tshooj, qhov kev hloov ntawm lub teeb hloov nrog lub kaum sab xis ntawm txoj kev sib tshuam siv lead ua. Thaum twg lawv muaj kev sib tshab, lub teeb pom tau zoo kiag li (Daim Duab 6); lub teeb yuav ua tau txhua yam permeable thaum uas tig mus rau ib leeg (Daim Duab 7).

Daim duab 6: lub teeb ci ntsa iab


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Daim duab 7: lub teeb yuav muaj kev permeable

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Cov iav ci ntawm cov iodine sib txuas me me heev, yog li ntawd nws muaj kev txwv heev hauv cov ntawv siv. Nws tau coj Dr. Herapath rau ze li kaum xyoo los kawm txog kev ua kom muaj zog ci ntsa iab, tab sis nws tsis tiav. Yog li ntawd, Rand ntseeg hais tias txoj hau kev no yuav tsis ua tau, yog li ntawd nws tau txais txoj kev nram qab no:

(rand) lapping loj granistals (pob zeb pob zeb) hauv cov iav me me thiab tshem tawm cov khoom me me hauv cov kua.
Ib daim ntawv yas raug muab tso rau hauv kev ncua thiab tom qab ntawd nws nyob hauv ib lub chaw magnetic field los yog hluav taws xob.

Thaum tshem cov ntawv yas tawm ntawm qhov kev ncua, lub tshuab Cryarizing yuav txuas nrog rau ntawm daim ntawv yas.

Thaum tawm hauv cov yas yeeb yaj kiab hauv lub teb chaw magnetic los yog hluav taws xob, nws yuav yog ib zaj duab xis polarizing tom qab so qhuav.

Rand tus qauv yog npaj kom muaj ntau lub thawv me me rau hauv qhov kev npaj, uas yog sib npaug ntawm cov pob zeb loj heev uas muaj polarized. Nyob rau xyoo 1928, nws tau ua thawj cov tub ntxhais kawm ua yeeb yam thiab J ua yeeb yam. Cov kev tsis zoo ntawm txoj kev no yog sij hawm siv, cov nqi siab thiab kev xav tsis zoo. Tiam sis Rand tau pom ob peb yam tseem ceeb hauv kev ua yeeb yaj duab: (1) iodine (2) polymer (3) orientation (Orientation). Tom qab tas li kev tshawb nrhiav thiab kev txhim kho, Rand thaum kawg ua tus tsim txoj kev uas tseem siv thaum xyoo 1938, thiab nws txoj hauv paus ntsiab lus yuav tau tham txog nyob hauv tshooj ntxiv.

Ua hauj lwm txoj cai ntawm lub yeeb yam polarizing

Cov yeeb yaj kiab feem ntau yog cov H ua yeeb yam los ntawm Rand hauv xyoo 1938. Tus qauv yog raws li nram no: thawj zaug, ib qho muag, ib qho muag pob yas txig yas plag (feem ntau yog PVA) yog siv rau hauv cov kua dej I2 / KI impregnated. Hauv ob peb feeb, ntau iodide ions diffused rau hauv txheej txheej ntawm PVA. Tom qab me ntsis cua kub, nws ncav tes los ntawm kev ua haujlwm los yog mechanically mus txog ob peb zaug qhov ntev ntawm PVA. Qhov ntev ntawm lub phaj ua nqaim thiab nyias nyias tib lub sij hawm, thiab cov PVA molecule random faib ntawm txhua lub kaum ntse ntse. Tom qab nro, nws maj mam deflected nyob rau hauv cov kev coj ntawm lub zog. Cov iodine ions uas txuas nrog lub PVA tseem ua raws li cov kev taw qhia, sib sau ua cov saw hlau iodine ions. Vim tias iodide ions muaj polarizability zoo, nws tuaj yeem nqus tau cov hluav taws xob tivthaiv rau qhov kev coj ua ntawm nws qhov kev npaj, thiab tsuas cia lub tshuab hluav taws xob tivthaiv hauv txoj kab kev ntsug dhau ntawm lub tebchaw. Los ntawm lub hauv paus ntsiab lus no, ua tau cov duab tho polarizing (Daim Duab 8).

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Hom thiab kev loj hlob ntawm cov duab tho polarizing
Hom polarizing films siv hnub no

Cov duab tho polarizing muaj ntau hom kev siv. Nws tuaj yeem siv tsis yog hauv LCD nkaus xwb raws li cov khoom siv roj hmab, tab sis kuj tseem ceeb hauv cov iav tsom iav, looj cov tsom iav, cov khoom siv yees duab, cov teeb taws kom pom kev tiv thaiv thiab lub teeb kom muaj zog, thiab lwm yam tsom iav thiab kev kho mob tshwj xeeb. Yuav kom ua tau raws li qhov yuav tsum tau ntawm lub cev hnyav thiab yooj yim siv, kev xaiv ntawm cov duab tho polarizing yog tsuas yog raws li polymer ob hom xim. Hom tshuaj polarizing no muaj plaub hom:

(1) hlau polarizing zaj duab xis

Hlau ntsev xws li kub, nyiaj thiab hlau yog adsorbed on film polymer thiab ces txo kom cov pas nrig li hlau ib kem. Nws yog tam sim no tsis ua los ntawm hom no.

(2) iodized polarizing film

PVA thiab iodine molecules yog qhov tseem ceeb tshaj plaws los tsim cov yeeb yaj kiab zaj duab xis.

(3) polarizing zaj duab xis ntawm cov xim zas

Organic dyes nrog ob xim tau adsorbed mus rau PVA thiab ces ncua rau orientate lawv, kom lawv tau ib nrab kev sib hloov khoom.
(4) polythene polarizing zaj duab xis

Siv acid ua catalyst, PVA yog dehydrated, kom PVA molecules muaj ib qhov nqi ntawm ethylene qauv, thiab ces ncua rau orientate, kom nws muaj ib nrab rotation zog.

Tus qauv ntawm polarizing zaj duab xis

Tom qab extending lub membrane polymer, cov khoom kho tshuab feem ntau yuav txo thiab ua nkig. Yog li, tom qab lub thawv polarizing (PVA) ntxiv, ib pob tshab substrate uas muaj peb qho acetate (TAC) txuas nrog ob tog. Nyob rau hauv ib tes, lub substrate yuav tiv thaiv. Ntawm qhov one hand, qhov kev tiv thaiv ntawm cov membrane tuaj yeem tiv thaiv tau. Tsis tas li ntawd, ib txheej ntawm kev tso tawm zaj duab xis thiab cov yeeb yaj kiab tuaj yeem raug ntxiv rau txheej txheej ntawm cov substrate mus pab tsevneeg nrog cov kua siv lead ua kua (Daim duab thirteen).


Xam kaum peb: ib qho qauv duab ntawm ib zaj duab xis polarizing


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Cov cwj pwm zoo ntawm cov duab thev naus laus zis rau LCD

Vim tias cov duab ntawm LCD tsis yog luminous, thiaj li ua kom tau qhov kaj thiab yooj yim qhia kom pom, polarizing zaj duab xis yuav tsum muaj meej, siab hloov thiab siab kho qhov muag. Tsis ntev los no, kev siv LCD yog ntau thiab ntau dua, xws li neeg lub neej, cov tub rog, high-tech thiab lwm yam. Vim muaj ntau hom kev lag luam thiab ua kom ntev ntawm LCD, ua kom muaj zog thiab kho qhov muag ntawm cov duab tho polarizing yuav tsum muaj zog.

Tsis tas li ntawd, nyob rau hauv tsos yam ntxwv, nrog kev txhim kho ntawm lub LCD painting, qhov saum npoo ntawm zaj duab xis polarizing yuav tsum du thiab mas refined. Yog hais tias nws siv nyob rau hauv ib qho chaw siab kub thiab siab thaj chaw siab ntev ntev, nws yuav tsum tswj cov kev coj ua polarizing, thiab ruaj khov ntawm cov nplaum siv kuj yog ib qho ntawm cov ntsiab lus tseem ceeb. Feem ntau hauv cov txheej txheem tsim ntawm polarizing zaj duab xis, nws tau ua nyob rau hauv chav tsev dawb paug.

1. vim hais tias cov khoom ntawm polarizing zaj duab xis yog PVA thiab TAC, yuav tsum tsis muaj txawv teb chaws thiab undissolved cob.

2. Thaum lub txheej txheem laminating ntawm cov duab tho polarizing, tsis muaj lwm yam txawv teb chaws tuaj yeem sib xyaw rau hauv txoj kev ua gluing, tsevneeg thiab kev ua haujlwm.

3. Tsis muaj kev tsis pom muaj nyob rau hauv cov khoom xws li cov yeeb yaj kiab los yog tso tawm zaj duab xis.

4. tsis yog Txuas ntxiv ntawm txawv teb chaws lub cev. tuaj yeem nrhiav tau ntawm cov nplai thiab ntuag seem ntawm cov khoom tiav los yog hauv cov pob.

Yog hais tias cov mob saum toj no tsis txaus siab, cov duab tho polarizing nrog kev daws teeb meem, loj loj thiab siab precision tsis tau ua.

Txoj kev loj hlob ntawm cov duab thev naus laus zis rau LCD

(1) iodized polarizing zaj duab xis

Polarizing films ua los ntawm PVA thiab iodine tau ntev nyob rau hauv cov kev lag luam loj hauv lub lag luam loj. Niaj hnub no, kev txhim kho ntawm cov khoom siv thiab kev txuas tshuab txuas ntxiv yog ze rau qhov theoretical value of polarized lub teeb thiab kev xa xov (polarized lub teeb 100% thiab xa tawm 50%).

(2) ua kom pom cov duab tho polarizing

Siv cov mis mos los ua cov duab tho polarizing uas muaj qhov kub siab txias, cov av noo, lub teeb pom kev thiab lwm yam, feem ntau siv hauv tsheb, ships lossis aircraft LCD. Tab sis tus polarizing tus nqi qis tshaj li ntawm iodine thiab nws cov nqi yog siab. Qhov kev txhim kho tam sim no yog kev siab tawv dua ntais zas xim nrog lub teeb cev hauv qhov pom ntawm cheeb tsam pom los ntawm kev txuas mus ntxiv ntawm PVA. Nws cov kev ua polarization yog piv rau cov iodine raws li cov yeeb yaj duab polarizing, tab sis tus nqi yog tseem siab tshaj qhov ntawm cov iodized polarizing zaj duab xis.

(3) kho qhov muag fais fab

Raws li cov cuab yeej ntawm cov khoom siv LCD siv ntau ntxiv, qhov uas yuav tsum tau ua rau xim, lub qhov muag pom, thiab lub teeb pom kev ntawm cov duab tho polarizing tau zoo dua, yog li txhua yam ntawm cov khoom siv kho lub cev tsim nyog yuav tau them rau. Piv txwv, (STN-LCD) vim hais tias torsion ntawm kua siv lead ua molecule ntau dua li 90 degrees, yuav muaj ib qho xim zoo nkauj nyob rau hauv cov yeeb yaj duab polarizing siv lub teeb duab ntxoo (linear polarized light), thiab cov tshuaj yog ntxiv rau theem theem sib txawv zaj duab xis.

 


deg kho

Deg ua tau nce qhov kho qhov muag thiab txhua yam khoom ntawm polarizing zaj duab xis. Niaj hnub no, thiaj li ua tau raws li qhov yuav tsum tau ua ntawm LCD diversification, lub yeeb yaj duab polarizing nrog compound function tau muag hauv khw.

1. kev xav tiv thaiv (AR) kev kho mob

Thaum lub teeb kis tau los ntawm qhov chaw ntawm lub thawv polarizing, yuav muaj li 5% ntawm qhov kev xav tsis tau. Vim yog poob ntawm luminosity thiab reflected teeb, lub cim LCD yuav raug txo. Txoj kev txhim kho yog vapor txheej txheem ntawm hlau zaj duab xis nyob ntawm qhov chaw ntawm lub thawv polarizing, txo qhov kev xav txog ntawm qhov siv lub cuam tshuam txoj cai ntawm lub teeb, thiab txo qhov kev xav rau hauv qab 1%.

(2) kev kho mob glare (AG)

Yuav kom tsis txhob ntau lub teeb ntawm lub teeb, qhov saum npoo ntawm polarizing zaj duab xis yog ua rau hauv cov duab convex concave, thiab lub teeb yog faib rau tus cwj pwm kom tau cov nyhuv ntawm kev nkag siab.

Nrog rau kev kho mob AG, nws muaj peev xwm ncav cuag tus mem hluav (3H hardness) uas ua rau khib nyiab heev, thiab huab cua siab tshaj yog tsim rau cov khoom loj loj (ntau tshaj 12.1 "), vim yog qhov muaj zog nram qab teeb los ntawm LCD. ntawm LCD daws teeb meem xws li UXGA (1600 x 1200) kom paub ntau ntxiv ntawm AG cov kev cai, polarizing board manufacturers tam sim no pib them sai sai rau qhov no, ntseeg tias yuav muaj khoom sib piv rau kev ua lag luam kev soj xyuas tsis ntev los no.