Tsev > Xov xwm > Ntsiab lus

TFT-LCD tshuab

Feb 17, 2017

TFT-LCD tshuab, cov ncauj lus kom ntxaws

Ua hauj lwm txoj cai ntawm TFT-LCD kua Crystal zaub

Hauv nyias zaj duab xis transistor kua siv lead ua kua (TFT-LCD), kev ua haujlwm ntawm TFT yog hloov raj. TFT feem ntau siv hauv peb qhov khoom siv dav dav. Ib txheej dab semiconductor yog ua rau iav substrate, thiab ib qho chaw electrode thiab ib qho dej electrode txuas nrog ob hnub. Thiab los ntawm lub rooj vag insulating zaj lus txawv lub semiconductor, qhov hluav taws xob tau siv rau lub qhov rooj kom tswj tau qhov chaw thiab ntws ntawm qhov tam sim no.

Rau cov vijtsam duab, txhua lub pixel yuav saib raws li cov kua siv ua kua ntawm lub pixel electrode thiab cov hom electrode. Dab tsi yog qhov tseem ceeb tshaj plaws yog tias nws tuaj yeem pom tau tias yog ib lub capacitor ntawm qhov pom kev siv hluav taws xob. Daim npav sib npaug yog muaj nyob rau ntawm daim duab 1. Ua rau kab kuv sab pixel P (I, J), nws yuav tsum tau qhib qhov kev hloov T (I, J) ntawm kab xaj D (I) los siv lub phiaj xwm . Thaum twg lub pixel electrode yog siab them, txawm tias tus tes hloov qhov tawm, tus nqi hauv lub capacitor yog fwm. Kev ua haujlwm ntawm tus neeg tsav tsheb (kem) tus tsav yog siv lub hom phiaj ntawm qhov kev tawm tsam, thiab lub rooj tsav npav (kab) tsav ua tus hloov thiab tawm. Vim tias qhov voltage ntxiv rau ntawm cov kua siv lead ua kua yuav khaws cia, cov kua siv lead ua kua tau ua haujlwm ruaj ruaj. Qhov kev tso hluav taws xob no kuj tuaj yeem muab sau rau hauv ib lub sij hawm luv luv los ntawm TFT, yog li ntawd, txawm tias high definition LCD, kuj tuaj yeem ua tau raws li cov duab zoo.

Tus yuam sij rau tso saib cov duab kuj yog cov qauv ntawm cov khoom siv ua kua hauv cov hluav taws xob. Los ntawm kev sib tw ntawm sab hauv substrate, cov kua siv lead ua kua molecules yog tsim los tsim cov kev xav tau deformation kom paub ntau hom zaub. Nyob rau hauv qhov kev txiav txim ntawm cov hluav taws xob, lub kua siv lead ua kua molecule muaj kev hloov ntawm kev taw qhia, thiab kev siv ntawm qhov teeb meem lub teeb hloov los ntawm cov kua siv lead ua kua los ntawm kev koom tes ntawm lub ncov qaum. Yuav kom ua tiav cov duab saib.

Yooj yim matrix nyias zaj duab xis transistor kua Crystal zaub nrog passive TN-LCD thiab STN-LCD yog txawv, nws muaj nyias zaj duab xis transistor hauv txhua pixel ntawm cov kua siv lead ua kua (TFT), uas tuaj yeem kov yeej cov crosstalk tsis gating, Cov yam ntxwv zoo li qub thiab cov kab xev thaij sab hauv lub vijtsam yog muaj kev ywj pheej ntawm cov naj npawb, yog li ua kom zoo dua qub rau cov duab zoo. Cov khoom sib hloov (piv txwv li TFT), nws tsim nyog ua kom tau raws li lub xeev tsis ua hauj lwm, kaw lub xeev tsis ua hauj lwm yog qhov loj heev no.

Cov xim ntawm cov xim nyias nyias transistor kua siv lead ua kua yog pom tau los ntawm kev ntxiv ib txheej xim ntawm cov xim rau sab xub ntiag ntawm lub tshuab. Nws yuav tsum muaj cov xim liab, xim ntsuab, xiav thiab dub rau txhua pixel.

Lub ntsiab zoo ntawm TFT-LCD LCD

Nrog rau kev loj hlob ntawm TFT technology nyob rau hauv 90s thaum ntxov, kev loj hlob ntawm xim LCD tiaj tus vaj huam sib luag zaub, tsawg tshaj li 10 xyoo, kev loj hlob sai ntawm TFT-LCD mus rau hauv lub ntsiab zaub, uas muaj nws qhov zoo yog inseparable. Cov nta tseem ceeb yog:

(1) kev coj siv zoo

Tsab ntawv teev npe ntawm qhov tsis tshua muaj hluav taws xob, tsis tshua tsav tsheb, muaj kev ruaj ntseg thiab muaj kev ruaj ntseg zoo tuaj; Ca, thiab nyias, txuag ntau ntau cov ntaub ntawv raw thiab siv qhov chaw; Tsis muaj hwj chim ntau, kev siv zog yog hais txog CRT zaub 1/10, sab laug thiab ib feem pua qhia TFT-LCD txawm tsuas yog CRT, txuag ntau zog thiab cov khoom siv TFT-LCD; Specification, me me series, ntau yam, yooj ywm thiab yooj yim mus use, txij nkawm, hloov tshiab, yooj yim rau kev hloov, lub neej ntev kev ua haujlwm thiab ntau lwm yam nta. Teeb pom kev sib txawv ntawm 1 ntiv mus txog 40 nti tso saib tag nrho cov ntawv thov ntau thiab dav dav dav dav dav dav dav dav dav dav dav dav dav; Tso saib zoo los ntawm cov lus yooj yim tshaj plaws monochromatic cim kom siab, siab xim fidelity, siab ci, siab zoo, siab teb ceev ceev ntawm cov duab yeeb yaj duab ntawm ntau cov lus; Zaub muaj ib hom ncaj nraim ntawm hom kev xav, qhov kev xam pom, thiab hom kev xav.

(2) qhov chaw tiv thaiv zoo

Tsis muaj hluav taws xob, tsis muaj teeb meem, tsis ua mob rau cov neeg mob. Hauv particular, qhov tshwm sim ntawm cov ntawv hauv TFT-LCD, yuav coj cov tib neeg tsis muaj chaw xa ntawv, tsis muaj kev luam ntawv, ua rau tib neeg kev kawm, kev sib txuas lus thiab cov ntaub ntawv ntawm kev sib haum xeeb ntawm kev ncaj ncees.

(3) dav dav ntawm daim ntawv thov

Nws tuaj yeem siv rau feem ntau hauv qhov kub ntawm thaj tsam ntawm -20 DEG C txog +50 DEG C, thiab ua haujlwm kub ntawm TFT-LCD yuav raug txo kom txog 80 degrees hauv qab xoom. Tus qauv siv hluav taws xob tsis yog siv tau los ua ib qho khoom dav hlau mobile, tab sis kuj siv tau ua ib qho loj screen projection tv.

(4) kev kawm siab ntawm automation hauv kev siv tshuab

Loj nplai muaj cov cwj pwm txawv txav. TFT-LCD kev lag luam mature technology, loj teev qhov khoom tiav lawm 90% lossis ntau dua.

(5) TFT-LCD yog yooj yim mus integrate thiab hloov tshiab

Nws yog qhov sib xyaw kom zoo ntawm cov nplai loj ntawm cov khoom siv hluav taws xob thiab cov teeb pom kev zoo siv tshuab. Tam sim no, muaj amorphous, polycrystalline thiab monocrystalline silicon TFT-LCD, yuav muaj lwm yam khoom yav tom ntej TFT, ob qho tib si iav substrate thiab yas substrate.

TFT-LCD manufacturing txheej txheem

Cov nram qab no yog qhov ntau thiab tsawg tsawg: daim duab 4.3, tft lcd 3.2, tft lcd 2.8

Nyias cov yeeb yaj kiab (transistor liquid crystal display) (TFT-LCD) feem ntau yog ua tiav thaum pib nrog ob txoj kev ua, raws li muaj nyob hauv daim duab 1. Lub txheej txheem theem pib yog raws li nram no:

Cov xim lim txheej los ntawm lub khob iav substrate, xim lim substrate / txheej txheem daim ntawv kom meej.

Tus tsim ntawm nyias zaj duab xis transistor kua siv lead ua nyias zaj duab xis - Substrate Technology (TFT) thiab lwm yam khoom siv hluav taws xob uas siv los tso rau hauv kev saib cov duab pixel txog kev tswj. Txhua tus pixel feem ntau yog sib txawv rau peb zaj duab xis transistor transistor kua (TFT), txhua pixel tswj ib qho tshwm sim tawm lub pixel ntawm cov xim thwj toob. "Cov zaj duab xis tsim cov txheej txheem siv CVD, Etch thiab PVD technology, uas zoo ib yam li cov tshuab thev naus laus zis. Cov txheej txheem no yuav tsum tau rov ua dua ob peb zaug, zaj duab xis tsis tu ncua tuaj yeem ua ib qho haujlwm zoo (Daim Duab 2).

Ob lub substrates ntawm cov tshuaj siv tshuaj tua kab ua kua nruab nrab ua ib qho.

Qhov kawg lub rooj sib txoos thiab kev ntim tsav tsheb hauv tshuab, tsim TFT-LCD module.

TFT-LCD LCD tshuab

Kev tsim cov txheej txheem ntawm nyias zaj duab xis transistor kua Crystal zaub muaj cov nram qab no: TFT array yog tsim nyob rau hauv TFT substrate; Kev sau cov xim lim dej thiab ITO txheej txheem ntawm cov xim xim substrate; Nrog ob lub substrates tsim lub kua siv lead ua lub thawv rau lub cav; Peripheral Circuit Court, backlight module pawg sib dhos.

1. txheej txheem rau kev ua TFT array rau TFT substrate

TFT tau pom tau hais tias kev ua lag luam ntawm cov khoom muaj xws li: amorphous silicon TFT (a-Si TFT), polycrystalline silicon TFT (p-Si TFT), monocrystalline silicon TFT (c-Si) ntau. Tam sim no qhov feem ntau dav siv yog ib-Si TFT.

Kev tsim cov txheej txheem ntawm a-Si TFT yog ua ntej rau lub qhov rooj ntawm cov ntaub zaj duab xis nyob rau hauv lub thawv iav substrate, thiab tom qab ntawd ua daim phiaj kab tom qab lub npog ntsej muag, kev loj hlob thiab kev qhuav qhuav. Cov kauj ruam cuam tshuam txog kev npog ncauj dav dav. Cov kauj ruam thib ob yog siv PECVD txujci rau kev ua yeeb yaj duab tsis tu ncua, SiNx zaj duab xis, cov yeeb yaj kiab uas tsis yog doped, phosphorus doped n + a-Si film. Tom qab ntawd, a-Si pattern of the TFT yog tsim los ntawm daim npog ntsej muag thiab qhuav dej. Qhov thib peb kauj ruam yog los ua ib lub pob tshab electrode (ITO zaj duab xis) los ntawm sputtering, thiab tom qab ntawd los mus nthuav tawm cov qauv hluav taws xob los ntawm lub npog ntsej muag thiab ntub etching. Qhov tiv tauj tus qauv ntawm cov kauj ruam plaub hau kev tiv thaiv huab cua qhov hluav taws xob yog tsim los ntawm daim npog ntsej muag thiab cov txheej txheem qhuav. Cov kauj ruam thib tsib yog kom muab lub plhaw AL rau hauv zaj duab xis, nrog lub npog ntsej muag, qhov cuam tshuam lub hauv paus, qhov ntws thiab lub teeb liab kab ntawm TFT. Thaum kawg, qhov yeeb yaj kiab tiv thaiv yog tsim los ntawm PECVD txoj kev, thiab tom qab ntawd ces zaj duab xis yog raug hluav taws xob los ntawm lub npog ntsej muag. Cov yeeb yaj kiab tau siv los tiv thaiv cov electrode thiab cov electrode thiab cov khoom electrode. Yog li ntawd, tag nrho cov txheej txheem tiav.

TFT array tshuab yog lub ntsiab ntawm TFT-LCD manufacturing txheej txheem, thiab feem ntau ntawm cov khoom siv peev. Tag nrho cov txheej txheem yuav tsum tau muaj theem siab ntawm kev kho (xws li, theem 10).

2. txheej txheem rau kev tsim cov xim lim xim rau xim lim (CF) substrate

Cov txheej txheem tsim cov xim ntawm cov xim xim muaj ib txoj kev siv zas xim, ib txoj kab hom pigment, ib txoj kab luam tawm, ib qho kev tso dej electrolytic thiab ib qho xoom-jet txoj kev. Tam sim no, cov txheej txheem dispersion pigment.

Thawj kauj ruam ntawm txoj kab npoo dispersion yog ua kom cov khoom nplua pov tseg (nruab nrab qhov hnyav dua li 0.1 M) (R, G, B tricolor) nyob rau hauv cov pob duab nrov tuaj. Tom qab ntawd lawv tau co nrog R., G. thiab B cov qauv xim xaj kom raug, raug thiab tsim. Cov cuab yeej no yog siv rau txheej, raug thiab tsim.

Yuav kom tiv thaiv tsis tau lub teeb pom kev, feem ntau nrog rau ib qho dub matrix ntawm qhov kev txiav txim ntawm peb RGB (BM). Nyob rau hauv lub dhau los, ib txheej txheej hlau chromium zaj duab xis yog tsim los ntawm kev siv txujci, thiab tam sim no nws muaj ib hom tshiab ntawm BM zaj duab xis los yog cov tawv sib xyaw nrog cov tawv nqaij BM.

Tsis tas li ntawd, nws yog ib qho tsim nyog yuav ua ib txheej ntawm cov yeeb yaj kiab hauv BM thiab tsim IT0 electrode, vim hais tias cov substrate nrog rau xim lim yog siv los ua lub hauv ntej substrate ntawm cov kua tshuaj siv ua kua thiab ib lub qab ntim nrog TFT rau ua kua Crystal kem. Yog li ntawd, peb yuav tsum tau them sai sai rau qhov teeb meem ntawm qhov chaw, kom txhua lub tsev ntawm cov xim lim thiab cov pixels coj ntawm TFT substrate.

3. cov kua siv lead ua lub thawv rau khoom noj

Ua ntej, cov duab zaj duab xis yog coated rau saum npoo ntawm lub substrate thiab qis substrate feem, thiab ib zaj duab xis orientation tuaj yeem tsim ua raws li qhov yuav tsum tau los ntawm kev sib txhuam kev txhuam. Tom qab ntawd, cov khoom siv sealant yog nyob ib ncig ntawm TFT array substrate. Nyob rau tib lub sijhawm, cov nyiaj muab tshuaj yog coated rau ntawm cov hlau electrode ntawm CF substrate. Tom qab ntawd, ob lub substrates muaj raws li thiab ua tiav, thiaj li tias CF qauv yog mus raws li TFT pixel qauv. Nyob rau hauv cov ntawv luam tawm cov ntaub ntawv, yuav tsum tau tawm hauv qhov chaw txhaj tshuaj, thiaj li yuav nqus tau dej qab ntsev ua kua.

Nyob rau hauv xyoo tas los no, nrog rau kev kawm ntawm technology thiab nce ntawm substrate loj, hauv cov txheej txheem tsim ntawm lub npov kuj tau zoo heev, tus neeg sawv cev ntau yog sau cov kev hloov ntawm crystal hloov, los ntawm daim tseem cia rau hauv ib lub thawv tom qab perfusion rau txoj kev ODF, Namely txhaws siv lead ua thiab ib txhij rau hauv ib lub thawv. Tsis tas li ntawd, txoj hauv ncoo yog ib qho uas tsis yog kev siv tshuaj txau, tab sis ncaj qha rau ntawm cov khoom siv photolithography.

4. qhov kev sib tshuam hauv qhov nruab nrab, sib dhos kev sibtham txheej txheem sib dhos

Tom qab cov txheej txheem ntawm cov kua siv lead ua kua ua tiav, yuav tsum tau npaj kom muaj vaj huam sib luag rau ntawm lub vaj huam sib luag, thiab tom qab ntawd ces lub phom polarizing yog muab tso rau ntawm ob sab substrates. Yog hais tias kis tau tus mob LCD. Kuj nruab nra taw.

Tshwj xeeb raws li nram no:

Txheej Txheem (Array Process)

Feem ntau cov nroj tsuag ntau lawm:

Cov txheej txheem muab faib ua ob ntu, CF thiab TFT, raws li qhia hauv daim duab:

TFT-LCD kev ntau cov txheej txheem

Ib tug, TFT array substrate tsim theem

TFT array lub ntsiab tu, zaj duab xis, thiab lub teeb daj lub rooj tsav tsheb, tom qab txheej txheem etching tsim ib tug qauv, thiab raws li seb muaj pes tsawg lub npog khiav cov txheej txheem, hauv cov voj voog no yuav tsum tau xub ntxuav mus rau hauv khob iav substrate plutter plating Txheej hlau, thiab tom qab ntawd lub teeb daj thiab txoj kev etching rau txoj kev tsim rooj vag, lub regional qauv, Sui tom qab stripping photoresist iav substrate los ntawm kev ntxuav, mus rau qhov chaw hauv plasma pab tshuaj lom neeg vapor deposition forming tshuab ua hauj lwm raws li thaj tsam thaj tsam, los ntawm ntau lub regional Kev sib koom tes. TFT tiv thaiv txheej txheem tsim hauv thaj yeeb yaj kiab tom qab thev yeeb yaj kiab tom qab cov dej khov ntawm Yang Tai, tom qab lub qhov tob tob, tom qab lub plawv ntawm indium tin oxide zaj duab xis (ITO), thiab lub teeb daj thiab etching txheej txheem rau kev ua pixel thaj tsam hauv thaj av no Txheej txheem tom qab TFT etching cov txheej txheem rau cov kauj ruam tseem ceeb.

Raws li tus qauv ntawm TFT rooj vag, qhov chaw, ntws electrode deposition sib lawv liag, tuaj yeem muab faib ua plaub pawg, raws li muaj nyob hauv daim duab TFT, tam sim no yog yield yog rov qab tus qauv teem, vim nws muaj qhov zoo ntawm cov qauv yooj yim thiab yooj yim Kev lag luam yog dav siv los ntawm lub tuam txhab TFT, vim hais tias cov txheej txheem sib txawv ntawm Channel: 1) tom qab qhov kev cuam tshuam ntawm TFT 2) tom qab kev tuav TFT los yog hu ua cov txheej txheem tsim muaj cov kauj ruam theem peb txheej txheem ntawm TFT.TFT yog N tom qab etching channel kawg ntawm amorphous silicon . Txhawm rau tsim kom muaj lub qhov rooj tiv thaiv lub qhov rooj, uas feem ntau yog txoj kev qhuav qhuav, thiab qhov ua rau lub chaw ntiav tam sim no yuav nyob rau hauv cov channel qhuav thaum yooj yim los ua qhov teeb meem tawm ntawm qhov chaw seem ntawm cov mos lwj.

Ob, theem tsim ntawm TFT-LCD

Sau tag nrho cov txheej txheem nyob rau hauv lub khob TFT-LCD, nrog rau lwm lub tshuab nrog xim, xim ntsuab thiab xiav xim lim iav, thawj daim txhuam zaj duab xis txhuam, kho kom zoo nkauj, txheej xim thiab cov kua nplaum thiab ob daim iav ntawm cov pab pawg tom ntej, txiav lub lobes Ntug kev sib tsoo thiab chamfering, tu ces, kua siv lead ua kua thiab sealing, thiab thaum kawg kuaj thiab hluav taws xob, ib qho tseem ceeb tshaj plaws yog raws li nram no:

1. Kho kev kho mob

Tag nrho cov txheej txheem yog txhuam hniav sib tsoo, feem ntau nyob rau hauv ntim franella txhuam hlau rollers sib tsoo tom qab firing txhuam zaj duab xis, kua siv lead ua kua molecules tuaj yeem ua rau ntawm ib qhov kev taw qhia.

2, .yog kis ntawm lub nchuav

Lub hom phiaj yog kom tau ib lub cev tuab ntawm cov kua siv lead ua kua, nws dispersed high density yuav ua tau ntau dua CELL GAP, yog tias muaj cov leakage thaum lub tshuab raj yuav txo qhov zoo thiab qis dua qhov kev sib tw ntawm spacer dispersion tsis tau txawm tias CELL GAP, yuav Cuam tshuam txog qhov zoo. Li ntawd tus spacer tusyees txau tseem ceeb heev, tam sim no nrog hom kev kis tau yooj yim dua los tswj tus cwj pwm, thawj ua nrog lub raj txuas, sib txuam ua ke ntawm cov roj hmab hauv lub cev yuav tsum tau nqa tawm tom qab CF thiab TFT.

3, .panel txiav

Nrog TFT thiab CF ua ke nrog quasi ntim super hard hlau rau cov menyuam thiab txoj kev tawg si txhua yam ntawm vaj huam sib luag.

Tom qab lub Sui ntawm cov duab, qhov loj thiab cov duab ntawm cov qauv ntaiv, txoj kev loj hlob ntawm nyias, ultra nyuaj steel tsis tau raws li txoj cai tom qab kho kom zoo, laser txiav kev.

4, .liquid siv lead ua kua

Kuv yuav siv cov iav puag ncig ntawm lub tshuab, kua siv lead ua kua dej los ntawm cov hom kua roj ntsha ncaj qha, yuav tsum tau ua tib zoo saib kom tsis txhob siv lub tshuab tua hluav taws thiab tawg.

II xub cia CELL nrog lub tshuab nqus tsev, lub CELL kua siv tshuaj pleev qhov chaw nres nkoj rau hauv cov kua siv lead ua kua, thiab ces lub tshuab nqus tsev rau qhov kev txiav txim ntawm nitrogen, qhov sib txawv hauv nruab nrab thiab sab nraum cov kua siv lead ua yuav raug txhaj rau hauv CELL

Cov duab thiab kev kho ntawm cov kua siv lead ua kua

Spacer tawg: yog txhaj rau cov kua siv lead ua kua, ua kua dej ua kua, ob daim iav khawm iav.

Spacer aggregation: thaum txhaj rau cov kua siv lead ua kua, kua siv lead ua kua muaj qhov loj thiab me me, vim hais tias cov kua siv lead ua me me nyob hauv nruab nrab ntawm lub tank yuav dov, ob peb tuaj ua ke los tsim ib Lub Cev Lub Cev Lub Cev

5. kev tshuaj ntsuam xyuas thiab hluav taws xob ntsuas

Kos rau LCD CELL project yog lub ntsiab kua kua qaub thaum tom qab kawm txog kev txheeb xyuas, kuaj pom thaum ntxov thiab kuaj zaum kawg thiab cov tshev no yog ua los ntawm kev pom.

Peb, LCD module tsim theem

Tus txheej txheem ntawm qhov module muaj qhov sib txuas ntawm lub khob ntim quav iab, cov ntawv luam tawm, kev nias thiab sib khi, lub plhaub thiab kev sibtham thiab kev sibtham.

Yuav ua li cas kua siv lead ua tshuab ua haujlwm:

Cov dej khov siv los ntawm ntau hom kev ua hauj lwm mus ua hauj lwm, siv ntau qhov chaw ntsug raws hom (hom MVA) thiab hauv dav hlau hloov hom (IPS hom) kom cov kua siv lead ua qhov pom kab rov tav pom txog 170 degrees. Hom MVA kuj tseem ua rau lub sij hawm luv luv mus rau 20ms.

(A) TN + Zaj Duab Xis

Los ntawm txoj kev pom kev, TN + Zaj Duab Zaj Yeem Duab Zis yog ib qho yooj yim tshaj plaws, TFT cov lag luam yuav siv los tso saib cov laus LCD twisted nematic (TN: Twisted Nematic), nrog TFT technology, thiab TN + Zaj duab xis technology. Cov kev siv tshuab no tsuas yog los ntawm cov ntaub npog cov yeeb yaj kiab tshwjxeeb, kom pom lub qhov muag pom tau los ntawm 90 degrees txog 140 degrees. TN + Zaj duab xis yog tib yam li tus qauv TFT yog los ntawm kev hloov cov kua siv lead ua kua molecules los ua tus tswj ntawm daim duab, nws npog lub sab saum toj ntawm ib zaj duab xis nyias mus nce lub qhov muag pom. Txawm li cas los xij, qhov tsis muaj zog ntawm TFT zaub thiab qeeb lub sijhawm ua rau cov kev tsis txaus ntseeg hloov tsis tau. Li ntawd, TN + Zaj duab xis tsis yog ib txoj hauv kev ua qhov no, ntxiv rau nws cov nqi tsis pheej yig, tsis muaj nqis.

(B) IPS (Hauv-Txoj Kev Hloov Kho)

IPS yog lub npe ntawm Kev Tshaj Tawm Hauv-Txoj Kev Hloov, uas txhais tau tias yog ib qho kev hloov pauv, los yog Super MTT. Ua ntej tsim los ntawm Hitachi (Hitachi), NEC thiab Nokia yog tam sim no siv cov tshuab no los soj. Cov txheej txheem sib txawv ntawm cov yeeb yaj kiab (TN-Film), uas txawv ntawm cov txheej txheem ntawm cov kua siv lead ua kua dej, raws li muaj nyob hauv daim duab 7, thaum cov hluav taws xob ntxiv rau cov kua tshuaj tua kua hlau molecules thiab cov txheej txheem substrate. Lub qhov muag pom siv lub tshuab los tso tawm mus txog 170 degree, lub qhov muag pom tau muaj tib lub cathode txoj kab tsho tube, tiam sis qhov kev siv tshuab no kuj muaj qhov tsis zoo: yuav kom tso cov kua siv lead ua kua molecules cov txheej txheem ntawm cov khoom siv tsis sib xws uas tsis zoo li cov khoom nematic -Film), hauv ob lub txheej ntawm substrate tsuas yog nyob rau hauv qis txheej substrate ntawm qhov ncaj tshwm sim ntawm qhov no yog qhov kev ci ci thiab qhov sib txawv me ntsis, nws thiaj li ua kom lub ci ci thiab qhov sib txawv, tsuas txhim khu qhov ci ntsa iab. Raws li qhov tshwm sim, lub sij hawm tshuaj tiv thaiv thiab qhov sib txawv nrog cov npav TFT zoo tib yam los kuj tsis yooj yim dua. Yog li ntawd lub tshuab tsis zoo li yuav yog qhov zoo tshaj plaws tov.

(C) MVA (Multi-Domain Vertical Alignment)

MVA ntau qhov chaw sib tw ua ke siv technology, tsim los ntawm Fujitsu (Fujitsu) lub tuam txhab, los ntawm kev pom kev, nws yuav siv sij hawm mus rau hauv tus account lub qhov muag pom thiab lub sij hawm ntawm ob lub ntsiab lus. Pom muaj kev sib haum xeeb. MVA tshuab ua rau pom qhov siab txog li 160 degrees, tab sis tsis zoo npaum li IPS tau mus txog 170 degrees ntawm qhov muag pom, tab sis nws tseem zoo, vim hais tias lub sij hawm ua tshuaj tiv thaiv no yuav ua rau zoo dua qhov sib txawv thiab tsawg dua.

Lub sijhawm M hauv MVA txhais tau tias "ntau hom" - lub ntsiab lus ntawm ntau thaj chaw. Raws li qhia hauv daim duab 8, cov ntshav tawv ncauj (protrusion) ua rau thaj tsam li ntawd. Fujitsu tam sim no ua cov MAV ntsuas hauv dav dav muaj 4 thaj chaw.

VA yog lub npe ntawm "sib khuav sib ntswg", uas txhais tau hais tias txoj kev sib ntswg. Txawm li cas los xij, yuav muaj qee qhov tsis to taub, vim hais tias cov kua siv lead ua kua qaub tsis raws li qhia hauv daim duab (protrusion) yog tag nrho ntsug. Thov saib Daim Duab 8 daim duab qhia hauv dub. Thaum siv hluav taws xob hluav taws xob los ntawm hluav taws xob fais fab, cov kua siv lead ua kua molecules yog npaj rau hauv kev sib luag nrog lwm tus, kom lub teeb ci ntsa iab tuaj yeem dhau, thiab cov teeb ci tuaj yeem ua rau txhua txoj kev qhia, ua kom lub qhov muag pom loj.

Tsis tas li ntawd, MVA tseem muaj sijhawm ntau dua cov lus teb rau IPS thiab TN + Film zaj duab xis, uas yog ib qho tseem ceeb heev rau kev rov zoo los yees duab thiab cov kev pom ntawm qhov seem. MVA LCD zoo ib yam kuj zoo tuaj, tab sis kuj muaj qhov pom ntawm qhov kev hloov.

Hauv kev kho qhov muag tho txawv tshuab (OCB) ntawm cov kev ua si tau tsim los ntawm lub peev xim (FSFC) LCD technology tsis tsuas yog rho nyiaj rau 1/3 ntawm cov nqi ntawm cov xim lim (CF), tuaj yeem txhim kho kev daws teeb meem 3 zaug , Qhov kev xa tawm yog nce 5 zaug, thaum simplifying cov txheej txheem, txo tus nqi. Nrog rau kev tsim cov xim thaij duab thiab kev siv tshuab nrig, xim xim muaj peev xwm ntawm TFT npo yog ntau tshaj CRT. Raws li qhov kev kawm ntawm lub ntsiab kev qhia ntawm cov khoom muag zaub TFT npo hauv ntau cov duab li yog qhov zoo tshaj plaws, tshwj xeeb tshaj yog kev txhim kho ntawm huab hwm coj cov tshuab ntawm TFT tshuaj ntsuam ntau yam, ntau ntau yam, multi series ntawm cov khoom tsim qhov chaw, qhov muaj ntawm daim ntawv thov ntawm Tsis muaj dab tsi.

Cov hauv qab no yog cov theem ntawm TFT npau suav:

Nyob qhov twg VSYNC yog lub teeb liab cov duab synchronization, VSYNC txhua tus tawm 1 pulses, txhais tau hais tias tus tshiab 1 screen video cov ntaub ntawv pib xa. Thaum lub HSYNC yog ib lub teeb liab synchronization teeb liab, txhua lub HSYNC mem tes qhia tias cov kab 1 tshiab ntawm cov ntaub ntawv video raug xa mus. VDEN yog siv los qhia txog cov txiaj ntsim ntawm cov ntaub ntawv yees duab, VCLK yog siv los xauv cov duab video.

Thiab hauv cov duab tho txawv thiab kev sib tw ntawm lub taub hau thiab cov lus twv yuav tsum muaj sij hawm me me rau VSYNC, piv txwv li, ua ntej lub sij hawm xa ntev tshaj (VSPW + 1) + (VBPD + 1), tom qab lub sij hawm xa ntev kuj zoo ib yam (VFPD +1); HSYNC. Qhov no yog qhov tseemceeb CRT tim ntsej muag thaum lub sij hawm siv hluav taws xob phom sij yuav siv sij hawm, tab sis tom qab los ua qhov kev lag luam tiag tiag, thiab raws li TFT npo tshwm tom qab hauv lub sijhawm CRT, kuj siv los tswj lub sijhawm.

Tsim ntawm TFT-LCD tsav tsheb Circuit Court

Lub VGA interface teeb liab raug hloov mus rau hauv analog LCD zaub tsav tsheb Circuit Court, siv ADI siab ua DSP nti ADSP-21160 mus rau lub ntsiab kev ua haujlwm ntawm cov tsav hluav taws xob.

Kho vajtse khoom tsim

AD9883A yog ib qho kev ua yeeb yaj kiab peb channel video ADC tuaj yeem ua tau ib lub sij hawm ntawm RGB tricolor teeb liab. Qhov system siv 32 npoo ntiv taw tes ADSP-21160 nti ua cov ntaub ntawv, ua tiav qhov tseeb ntawm gamma kho lus, lub sij hawm txhim kho, duab ua thiab qhov ua kom zoo dua, kom ua tau raws li kev ua haujlwm ntawm lub system. ADSP-21160 muaj 6 tus neeg sab nraud nce siab me ntsis txuas nrog 8 ntsis txuas sib txuas sib txuas, uas txuas nrog rau ntawm ADSP-21160 analog rau digital conversion chip AD9883A thiab rov qab rau digital analog conversion chip ADV7125. ADSP-21160 muaj ib tus qauv Harvard Super, txhawb kev qhia ib yam nkaus xwb (SIMD) hom, siv cov lus programming kom ua tau zoo ntawm kev sib sau ua ke ntawm cov teebmeem video, tsis yog ncua sijhawm ntev thiab kev ua cov ntaub ntawv.

Qhov system khoom kho hluav taws xob schema qhia hauv daim duab 1. Lub kaw lus muaj peev xwm ua tiav cov kev tawm tswv yim thiab cov zis los ntawm kev sib txawv ntawm cov tub ntxhais siv sib txuas. Analog video teeb liab los ntawm AD9883A kom tiav analog rau digital conversion. AD9883A yog ib qho peb channel ADC, ces cov txheej txheem yuav ua tiav cov teeb meem monochrome video ua, kev yees duab ua xim ntawm lub ntsej muag tseem ua tiav. Cov duab digital sampled yog cov tswv yim rau ADSP-21160 los ntawm txoj kev sib tshuam hauv kev sib txuas, thiab cov teeb liab tso tawm rau ADV7125 tom qab sib txawv dua. ADV7125 yog peb channel DAC, tuaj yeem siv tau los kho cov teeb meem xim. Qhov teeb liab tawm ntawm lub qhov muag tawm mus rau qhov grey voltage tiam hluav taws xob, tus tsav hluav taws xob yuav tsum tsav tsheb npo. ADSP-21160 kuj muaj lub cim khoos phis rau I / O universal, uas yuav siv tau los txais kev tshaj tawm sab nraud, xa cov ntaub ntawv tswj hwm rau lub cev thiab nws cov modules thiaj li ua rau tag nrho lub zog ua haujlwm kom ruaj khov thiab raws cai. Piv txwv li, ADSP-21160 muab cov kev qhia tswj kev tsim nyog rau qhov grayscale voltage tiam Circuit Court thiab LCD screen. Tsis tas li ntawd, lub system kuj tsim ib lub xov tooj ntawm cov teeb uas siv teeb pom kev zoo, siv los pom qhov system kho vajtse thiab DSP sab hauv cov txheej txheem rau txhua lub xeev ua hauj lwm.

Daim duab 1 Daim duab ntawm daim phiaj xwm txheej

Txoj kev tsim no siv cov flash boot txoj kev los thauj ntsaws DSP cov ntaub ntawv, flash nco tau tus nqi siab, me me, tsawg zog. Lub tshuab no yog vim flash DSP kev pabcuam, tabsis kuj txuag tau cov ntaub ntawv sib txawv ntawm cov ntaub ntawv thiab tso saib cov ntaub ntawv nyob rau ntau qhov chaw ntawm default gamma nqi, yog li xaiv ST STATE M29W641DL, yuav txuag tau qhov program code, thiab yuav txuag tau cov ntaub ntawv tsim nyog Thiab cov ntaub ntawv.

Daim duab 2 yog DSP thiab flash interface Circuit Court. Vim tias kev siv 8 ntsis flash boot hom, yog li ADSP-21160 chaw nyob yuav tsum siv A20 rau A0, cov kab ntawv D39 ~ 32, nyeem thiab sau flash nco thiab nti xaiv cov kev taw qhia tau txais hom pins.

Daim duab 2 DSP thiab Flash interface Circuit Court

Kev ua haujlwm thiab kev paub txog

Cov qauv siv no yog siv ADSP-21160 los ua kom tiav cov kev ntsuas gamma, lub sij hawm puag kho, moos generator, duab optimization thiab tswj cov teeb liab ua haujlwm.

Txheej Txheem Gamma

Hauv LCD, daim duab cov duab ntawm IC / LSIDAC tsav teeb liab ntawm kev hloov pauv, thiab electro-optic cov khoom siv ua kua siv yog nonlinear, thiaj li kho qhov voltage ntawm cov kua siv lead ua kua, kua siv lead ua cov duab ci kom raws li txoj kab, gamma (gamma correction) . Gamma kho lus yog ib txoj kev tseem ceeb kom paub cov ntaub ntawv ntawm qhov khoom qub los yog thawj daim duab. Kev siv cov lus saum rooj los txhawm rau txhawm rau cov khoom siv hluav taws xob ntawm cov kua hluavtaws gamma correction yuav ua rau cov kua siv lead ua kua muaj qhov hloov ua haujlwm zoo. Qhov kev ua lag luam ntawm cov txheej txheem LCD yog qhov kev ua haujlwm ntawm gamma cov lus hloov mus rau ADC teeb liab mus rau hauv ib qho inverse S nonlinear transformation, thiab thaum kawg, cov khoom siv hluav taws xob thiab cov zis tawm ntawm cov kua siv lead ua kua yuav ua tau raws li qhov tseeb Kev xav tau.

LCD gamma correction qauv raws li qhia hauv daim duab 3, tus cwj pwm LCD electro-optic tus cwj pwm, lub teeb ci ntsa iav LCD thiab daim qauv ntawm qhov hloov voltage.

Daim duab 3 Daim duab teeb duab ntawm LCD gamma kho lus

Txhim kho Gamma kho

Daim ntawv no siv scientific gamma correction processing tshuab, cov video teeb tsa muaj feem peb xim cov gamma kho kom raug (los yog kev kho ntawm cov simulated peb xim video teeb liab muaj gamma). Nyob rau tib lub sijhawm, gamma kho lus yog tsis ploj, kom tag nrho cov xim xim duab yog ntau vivid, ntau tseeb, ntau meej.

Ib qho kev sib dhos gamma kev sib kho raws li qhia hauv daim duab 4, qhov ob xim yog tib yam. Piv txwv li, ADSP-21160 yog thawj tus saib lub rooj kom tau qhov gamma hloov coefficient (gamma value). Tom qab ntawd, raws li gamma tus nqi thiab cov ntaub ntawv tawm cov ntaub ntawv, lub rooj thib ob saib xyuas tau. Tus thawj saib-rooj saum gamma nqi yog tswv yim rau kev tswj tus txheej txheem ntawm kev tswj xyuas sab nraud rau thawj zaug los xyuas cov rooj. 8 digit display data teeb liab rooj ntawm cov zauv los ntawm 0 txog 255 gray scale zaub data (gamma correction).

Daim duab 4 kev ua lej gamma kev hloov kho

Image optimization

Hauv kev txhim kho cov duab zoo, ADSP-21160 yog tsim los kho qhov teebmeem duab thiab cov qauv zoo nkauj, ntau yam hauv simulation ua haujlwm tsis tuaj yeem ua haujlwm nyob rau hauv cov zauv, piv txwv, ob sab qhov kev soj ntsuam, Qhov kev kho kom sib haum, kev kho kom haum, kev kho kom haum, kev kho kom haum, kev kho kom haum, kev kho kom zoo nkauj, kev hloov kho, Kev Kho Daws Teeb, kev tswj hwm, thiab kev kho kom haum.

Qhov luaj li cas ntawm cov teebmeem, cov teebmeem digital thiab qhov kev hloov ntawm kev ci ntsa iab thiab kev hloov xim ntawm cov teebmeem ntawm cov zauv, nws tuaj yeem ua duab rau ntau yam duab, ntawm txhua qhov zis zoom, kev sib tw, uas tsis paub qhov simulation ntawm Stunt. Cov ntxaij lim dej kuj yog tsim los lim tawm ib co teeb liab thiab suab paj nruag teeb liab, yog li ntawd cov duab clarity siab dua, zoo tu tub tu koov ntawm daim duab. Tag nrho cov teeb meem thiab cov ntaub ntawv khaws cia rau hauv DSP, uas yog tsim los ntawm lub moos module thiab tswj module.

Lub sij hawm puag kho thiab tswj kav

Vim yog lub luag hauj lwm hauv ADSP-21160 thiab txawv lub sijhawm, muaj qee qhov qeeb ntawm txhua qhov module, nws xav tau cov sij hawm hauv kev kho lub sij hawm, cov lus tso tawm cov ntaub ntawv zaum kawg yuav ua tau nruj me ntsis tsis muaj kev cuam tshuam los sis cov lus qhia tsis meej. Cov sij hawm siv lub sij hawm yog siv los kho cov teeb liab video kab, daim teb synchronization teeb liab lub sij hawm yuam kev. Ua ntej tshaj plaws, nws yuav yog ib lub teeb meem kho rau lub sij hawm pib lub teeb meem raws li ib qho kev qhia kom nco. Tom qab ntawd, TFT-LCD lub sij hawm pib lub teeb liab raws li kev siv tau nyeem tawm, lub sij hawm pib yuam kev me me lub teeb liab. Tib lub sij hawm nws tseem ntxiv lwm cov nta ntawm lub teeb liab video tuaj yeem kho ci ntsa iab, chroma, saturation, tib lub sij hawm, theem, yoj load theem hloov, thiab muaj kev ua haujlwm ntawm moos.

Cov kev tswj module yog qhov tseem ceeb tshaj rau kev tswj xyuas lub voj voog kom tswj cov kev tswj thiab kev lag luam ntawm ntau qhov kev haumxeeb, xws li cov ntaub ntawv qhia txog kev tswj hwm thiab kev lag luam, yuav yog tus saib xyuas cov ntaub ntawv thiab cov kev qhia tsis muaj nyob rau hauv qhov chaw, yuav yog lub luag haujlwm rau Cov ntsiab lus ntawm qhov tsis mus sau npe rau hauv cov kev qhia ua yeeb yam. Lub teeb liab sab hauv lub teeb tsa ua rau lub teeb liab thiab qhov chaw nyob, thiab ua kom muaj teeb liab tswj raws txoj kab rov tav thiab ntsug thiab qhov nqi txav txaj. Tsis tas li ntawd, nws tuaj yeem tau txais kev tshaj tawm sab nraud los ua kom tib neeg-kev sib raug zoo ntawm kev sib txuas lus, kom lub voj voog loj dua, muaj kev ywj pheej ntxiv.

Tsis tas li ntawd, ADSP21160 kuj tsim lub I2C npav tswj kev ruaj ntseg, analog I2C npav mus ua hauj lwm, rau sab nraud I2C interface ntaus nrog SCLK (lub sijhawm xov tooj cua) thiab SDA (ob kab lus qhia txog cov teeb meem ntawm cov ntaub ntawv). Lub xeev kev khiav hauj sim ntawm I2C simulated muaj nyob hauv daim duab 5 thiab daim duab 6.

Daim duab 5 qhia txog kev sau / sau cov sij hawm

Daim duab 6 serial interface - raug hloov mus hloov

Kev tsim cov software

Hauv software tsim, raws li muaj nyob hauv daim duab 7, Matlab software siv los laij cov nqi kho, thiab muab khaws cia rau hauv daim ntawv ntawm lub rooj sib tham, rau lub sijhawm hu. Lub zog ntawm lub cev, thawj ua tiav ntawm ADSP-21160 chaw nqis tes, kom DSP tuaj yeem ua haujlwm kom zoo thiab zoo. Thaum ADSP-21160 tau txais txiaj ntsig zoo tshaj qhov yees duab, qhov ntsuas lej yog txiav txim siab raws li cov ntaub ntawv qhia sab nraud. Yuav kom hloov tau ntau tus TFT-LCD npo los tso saib lub teeb liab video, lub system yuav hloov kho qhov gamma tus nqi kom kho cov nyhuv rau qhov zoo tshaj plaws. Raws li pom hauv daim duab 4, cov lus nrhiav ntawm cov ntaub ntawv khaws tseg yav dhau los, kom tau txais cov nqi kho kom raug, thiab tom qab ntawd mam li daws cov kauj ruam tom ntej. Raws li cov yeeb yam ntawm cov teeb liab video thiab cov kev xav tau ntawm tus neeg siv, lub system kuj tseem tuaj yeem ua tau ib co duab optimization thiab tshwj xeeb teebmeem, xws li cov duab ob-seem, kev hloov kho, kev hloov kho, qhov sib txawv ntawm kev hloov, thiab lwm yam. Yuav xaiv tau los ntawm tus neeg siv. Kev siv ADSP-21160 tuaj yeem ua tiav duab ntxeev, stagnation thiab lwm yam stunts. Finally, the digital time base correction, mainly used for correcting the video signal line, field synchronization signal timing error, the final output data memory can be strictly aligned without overlapping or discontinuous information. In addition to the above features, ADSP-21160 also provides the necessary control signals for the grayscale voltage generation circuit and the TFT-LCD screen in accordance with the timing control signal. In addition, the ADSP-21160 can also be set to drive the general configuration of the I/O pin LED lamp, display system operating state.

Figure 7 software flow chart