Tsev > Exhibition > Ntsiab lus

OLED Tsav hom

Sep 14, 2017

Cov hom tsav tsheb ntawm OLED muab faib ua tsav (tsav tsheb) thiab passive tsav (passive tsav).

OLED (PM)

Nws yog muab faib rau hauv txoj kev tsav tsheb zoo li qub thiab cov qauv hluav taws xob khiav hluav taws xob.

Nruab nrab zoo li qub: kev tsav tsheb zoo li qub hauv organic light emitting zaub dais, organic light emitting cathode feem ntau txhua pixel txuas nrog lub anode ntawm txhua pixel faib tawm, qhov no yog qhov sib txuas cathode. Yog hais tias koj xav tau ib lub teeb emitting pixel voltage thiab cov cathode voltage ntev li ntawm lub tsev rau qhov tam sim no qhov chaw ntawm lub teeb emitting pixel qhov txawv tshaj li tus nqi, cov pixel yuav ci hauv kev tsav ntawm qhov chaw tam sim no, yog lub teeb pixel yuav nws cov anode nyob rau hauv ib tug tsis pom zoo voltage, nws yuav rov qab. Txawm li cas los xij, tej zaum yuav muaj kev cuam tshuam thaum qhov duab hloov mus ntev. Yuav kom tsis txhob muaj qhov no, peb yuav tsum tau txais txoj kev sib txuas lus. Lub vojvoog zoo li qub yog feem ntau yog siv rau kev tsav tsheb ntawm ntu duab.

Tus txheej txheem kev tsav tsheb nyob rau hauv kev tsav tsheb dynamic hauv kev tsav tsheb hauv lub cev hluav taws xob emitting zaub rau ntawm ob tus neeg ua cov pixel electrode matrix qauv, namely theem ntawm cov txheej txheem electrode ntawm tib yam khoom pixel feem ntau, ib pawg ntawm longitudinal qhia lwm lub electrode ntawm tib Cov khoom pixel muaj ntau. Yog pixels faib tau N Nce thiab M kab, koj yuav muaj N kab electrodes thiab M kem electrodes. Cov kab thiab cov kab sib txuas mus rau ob lub electrodes ntawm cov luminous pixel feem. Cathode thiab anode. Nyob hauv txoj kev sib txig ntawm lub voj voog, nws yog ib qho tseem ceeb kom pom lub kab ntawm kab los yog pixel los ntawm kab. Kev xa roj electrode feem ntau yog siv rau hauv kab luam, thiab sab electrode yog cov ntaub ntawv electrode. Tus txheej txheem ntawm qhov kev siv yog thov siv cov pulses rau txhua kab ntawm electrode voj, thaum tag nrho cov sab electrodes muab tsav tsheb tam sim no ntawm tus kab pixel, ua li no yuav pom cov duab ntawm tag nrho cov pixels ntawm ib tug kab. Cov kab no tsis yog nyob rau tib lub kab lossis pixel ntawm tib sab, ntxiv rau qhov rov qab tsis muaj teeb meem uas tsis tso saib kom tsis txhob muaj "cross effect", uas yog ua tiav, thiab lub sijhawm yuav tsum ua kom tiav txhua tus kab yog hu ua lub voj voog.

Nyob rau hauv ib kablus, lub sijhawm xaiv ntawm txhua kab yog sib npaug. Xav hais tias tus lej ntawm cov kab hauv N yog, thiab lub sij hawm ntawm kev luam yog 1. Tom qab ntawd, lub sij hawm xaiv ntawm kab yog 1 / N ntawm lub sijhawm, uas yog hu ua qhov kev ua haujlwm. Nyob rau tib qho tam sim no, qhov kev nce ntawm kev xa khoom yuav txo qhov haujlwm voj voog, uas yuav ua rau kom txo qis ntawm qhov kev txhaj tshuaj tam sim no hauv ib qho organic electroluminescent pixel, thiab txo cov zaub zoo. Yog li nrog cov duab pixel tooj, thiaj li ua kom cov duab zoo, koj yuav tsum tsim kom muaj qhov tsav tam sim no los yog lub tuam txhab dual electrode kom nce qhov kev sib piv.

Ntxiv rau qhov uas muaj tshwm sim los ntawm cov pej xeem electrode, organic electroluminescent zaub nyob rau hauv txoj kev tsim muaj qhov zoo thiab tsis zoo rau tus neeg tsav tsheb mus rau lub luminescence mechanisms kom muaj ob lub teeb emitting pixels, tsuav yog qhov muaj pes tsawg leeg ntawm txhua hom kev ua yeeb yam ntawm lawv cov qauv yog ncaj qha kev sib txuas ua ke, ob lub teeb emitting pixels ntawm qhov tshwm sim tau crosstalk, piv txwv li lub teeb emitting pixel, ib pixel tej zaum kuj emit tsaus muag. Cov phenomenon no mas vim yog lub pluag uniformity ntawm cov organic functional films thiab cov txom nyem transverse rwb thaiv tsev ntawm cov yeeb yaj duab. Los ntawm qhov pom ntawm tsav, txhawm rau mitigate cov nyom crosstalk, qhov rov qab kaw yog ib txoj kev zoo.

Grayscale zaub: grey qib ntawm ib cov zaub yog qhov ci ntsa iab ntawm cov duab dub thiab dawb los ntawm dub mus dawb. Grey ntau dua, lub sijhawm ntxiv ntawm cov duab los ntawm dub mus rau dawb, lub dlaim phaj qhov kev nthuav dav. Grayscale yog ib qho tseem ceeb heev rau kev pom duab thiab xim. Feem ntau siv rau kev xuas grey zaub, feem ntau teev matrix zaub, tus tsav tsheb kuj feem ntau dynamic tsav, grey tswj ntawm ntau txoj kev yog: tswj txoj, spatial grey tes taws los piav, lub sij hawm grey lub sij hawm.

OLED (AM)

Txhua pixel dhia tsav nrog kub tsis muaj polycrystalline silicon nyias zaj duab xis transistor muaj ib qho kev hloov ua haujlwm (LowTemperature Poly-Si Thin Film Transistor, LTP-Si TFT), thiab txhua pixel muaj nruab nrog them nqi them rau capacitor, peripheral tsav Circuit Court thiab tso saib tag nrho cov array system ke rau tib iav substrate. Tus qauv TFT tib yam li LCD tsis siv rau OLED. Qhov no yog vim LCD siv qhov kev ntsuas hluav taws xob, thaum lub OLED nyob ntawm tus tsav tam sim no, nws qhov ci thiab qhov tam sim no yog proportional rau tus nqi, yog li ntxiv rau qhov chaw hloov ntawm TFT ON / OFF, kuj yuav tsum tau ua kom txaus los ntawm kev siv txoj kab me me ntawm TFT low impedance.

Active drive yog ib hom tsav tsheb zoo li qub nrog cia cov nyhuv thiab tau tsav los ntawm 100% loads. Tus tsav yog ywj siab ntawm cov luam roj ntsha electrodes thiab tau xaiv xyua kho rau txhua pixel ntawm nws tus kheej.

Qhov kev ua lag luam tsis ua hauj lwm pub dawb yog tsis txwv los ntawm cov xov tooj ntawm cov tshuab electrodes, yog li nws yog ib qho yooj yim kom ua tau kom muaj kev kaj siab thiab kev daws teeb meem.

Vim hais tias tus neeg tsav tsheb dhia yuav hloov kho qhov kev siv ntawm xim liab thiab xiav pixels ntawm nws tus kheej, nws yog qhov zoo dua rau qhov kev paub ntawm OLED xim.

Tus tsav tsheb khiav ntawm lub tshuab matrix yog muab zais rau hauv cov vijtsam zaub, uas ua kom yooj yim mus cuag kev koom ua ke thiab kev siv lub tshuab. Tsis tas li ntawd, vim muaj kev sib txuas ntawm lub nruab nrab ntawm qhov hluav taws xob thiab lub vijtsam, qhov no pabcuam cov qoob loo thiab kev cia siab rau qee yam.