Chii chakakosha cheLCD Operation?

Basics of LCD Operation

news1_1Liquid crystal displays (LCDs) inyanzvi yokuratidza tekinoroji.Izvi zvinoreva kuti havabudisi chiedza;pachinzvimbo, vanoshandisa ambient chiedza mumhoteredzo.Nekugadzirisa chiedza ichi, vanoratidza mifananidzo vachishandisa simba shoma.Izvi zvaita kuti maLCD ive tekinoroji yakasarudzika pese pese pakaderera simba rekushandisa uye compact saizi yakakosha.

Liquid crystal (LC) chinhu cheorganic chine zvese zviri mumvura fomu uye crystal molecular chimiro.Mumvura iyi, mamorekuru akaumbwa netsvimbo anowanzo mugwara rakafanana, uye munda wemagetsi unogona kushandiswa kudzora mamorekuru.MaLCD mazhinji nhasi anoshandisa rudzi rwekristaro yemvura inonzi Twisted Nematic (TN).Ona mufananidzo uri pazasi kuti uone chiratidziro chekuenzanisa kwemamorekuru.

A Liquid Crystal Display (LCD) ine ma substrates maviri anoumba "flat bhodhoro" rine musanganiswa wecrystal yemvura.Iro mukati mebhodhoro kana sero rakaputirwa nepolymer iyo inonamirwa kuti ienzanise mamorekuru emvura yekristaro.Iyo liquid crystal mamorekuru anonangana pamusoro penzvimbo yakananga kune buffing.Kune Twisted Nematic madivayiri, iwo maviri maficha akabatiswa orthogonal kune imwe, achigadzira 90 degree twist kubva pane imwe nzvimbo kuenda kune imwe, ona mufananidzo pazasi.

Iyi helical structure ine simba rekudzora chiedza.Polarizer inoshandiswa kumberi uye analyzer / reflector inoshandiswa kumashure kwesero.Kana zvisina tsarukano polarized mwenje ichipfuura nepakati polarizer yekumberi inova mutsara polarized.Inobva yapfuura nepakati pegirazi rekumberi uye inotenderedzwa neiyo liquid crystal mamorekuru uye inopfuura nepagirazi rekumashure.Kana iyo analyzer yakatenderedzwa 90 madhigirii kune polarizer, mwenje unozopfuura nemu analyzer uye unoratidzwa kumashure kuburikidza nesero.Mucherechedzi achaona kumashure kwechiratidziro, icho mune iyi kesi iri sirivheri grey ye reflector.

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Girazi reLCD rine maconductor emagetsi anoonekera akaiswa padivi rega rega regirazi achisangana nemvura yecrystal fluid uye anoshandiswa semagetsi.Aya ma electrode anogadzirwa neIndium-Tin Oxide (ITO).Kana chiratidzo chekutyaira chakakodzera chikaiswa kumasero emagetsi, nzvimbo yemagetsi inomiswa pasero.Iyo liquid crystal mamorekuru inotenderera ichienda kumunda wemagetsi.Chiedza chinopinda chine mutsara wepolarized chinopfuura nepakati pesero chisina kubatwa uye chinotorwa nechekumashure analyzer.Mucherechedzi anoona hunhu hwakasviba pane sliver grey kumashure, ona mufananidzo 2. Kana nzvimbo yemagetsi ichidzimwa, mamorekuru anozorora kudzokera ku90 degree twist structure.Izvi zvinodaidzwa semufananidzo wakanaka, fungidziro yekuona maitiro.Kutakura tekinoroji yekutanga ichienderera mberi, LCD ine akawanda anosarudzwa maelectrode uye nekusarudza kushandisa voltage kune maelectrode, akasiyana mapatani anogona kuwanikwa.

Kufambira mberi kwakawanda muTN LCDs kwakagadzirwa.Super Twisted Nematic (STN) Liquid Crystal material inopa yakakwira twist angle (>=200° vs. 90°) inopa musiyano wepamusoro uye kona yekuona iri nani.Nekudaro, chimwe chinhu chisina kunaka ndeye birefringence mhedzisiro, iyo inoshandura iyo yekumashure ruvara kune yero-yegirini uye chimiro chemavara kuita bhuruu.Rudzi rwekumashure urwu runogona kushandurwa kuita grey nekushandisa yakakosha sefa.

Kunyanya kufambira mberi kwave kuri kuunzwa kweFirimu rakabhadharwa Super Twisted Nematic (FSTN) zviratidziro.Izvi zvinowedzera firimu retardation kune STN kuratidza iyo inotsiva ruvara rwakawedzerwa nebirefringence athari.Izvi zvinobvumira dema uye chena kuratidza kuburitswa.


Nguva yekutumira: Jan-19-2022

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