Menene Tushen Aiki na LCD?

Tushen Ayyukan LCD

news1_1Nunin kristal mai ruwa (LCDs) fasahar nuni ce mai wucewa.Wannan yana nufin ba sa fitar da haske;maimakon haka, suna amfani da hasken yanayi a cikin muhalli.Ta hanyar sarrafa wannan hasken, suna nuna hotuna ta amfani da ƙaramin ƙarfi.Wannan ya sanya LCDs fasahar da aka fi so a duk lokacin da ƙarancin wutar lantarki da ƙananan girman ke da mahimmanci.

Liquid crystal (LC) wani nau'in halitta ne wanda ke da nau'i biyu na ruwa da tsarin kwayoyin crystal.A cikin wannan ruwa, kwayoyin halittar mai siffar sanda yawanci suna cikin layi daya, kuma ana iya amfani da filin lantarki don sarrafa kwayoyin.Yawancin LCDs a yau suna amfani da nau'in crystal na ruwa mai suna Twisted Nematic (TN).Dubi hoton da ke ƙasa don ganin gani na daidaitawar kwayoyin halitta.

Nunin Crystal Liquid (LCD) ya ƙunshi abubuwa biyu waɗanda ke samar da "kwalban lebur" wanda ke ɗauke da cakuda ruwan crystal.Abubuwan da ke cikin kwalbar ko tantanin halitta an lulluɓe su da polymer wanda aka buɗa don daidaita ƙwayoyin kristal na ruwa.Kwayoyin kristal na ruwa suna daidaitawa a saman saman zuwa alkiblar buffing.Don na'urorin Nematic Twisted, saman biyun an haɗa su zuwa juna, suna yin jujjuyawar digiri 90 daga wannan saman zuwa wancan, duba adadi a ƙasa.

Wannan tsarin helical yana da ikon sarrafa haske.Ana amfani da polarizer a gaba kuma ana amfani da mai nazari/reflector a bayan tantanin halitta.Lokacin da bazuwar haske ya ratsa ta gaban polarizer zai zama madaidaiciyar polarized.Daga nan sai ta wuce ta gilashin gaba kuma ana jujjuya shi da kwayoyin crystal na ruwa ya wuce ta gilashin baya.Idan mai nazari yana jujjuya digiri 90 zuwa polarizer, hasken zai ratsa ta na'urar tantancewa kuma a sake nuna shi ta cikin tantanin halitta.Mai kallo zai ga bangon nunin, wanda a cikin wannan yanayin shine launin toka na azurfa na mai nunawa.

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Gilashin LCD yana da masu gudanar da wutar lantarki masu bayyanawa wanda aka fentin a kowane gefen gilashin a cikin hulɗa da ruwa mai kristal kuma ana amfani da su azaman lantarki.Ana yin waɗannan na'urori daga Indium-Tin Oxide (ITO).Lokacin da aka yi amfani da siginar tuƙi da ta dace akan wayoyin salula, ana saita filin lantarki a cikin tantanin halitta.Kwayoyin kristal na ruwa za su juya zuwa hanyar filin lantarki.Hasken layin da ke shigowa yana wucewa ta cikin tantanin halitta wanda bai shafe shi ba kuma mai nazarin baya yana ɗauka.Mai kallo yana ganin baƙar fata akan bangon sliver launin toka, duba hoto na 2. Lokacin da aka kashe wutar lantarki, kwayoyin suna sake dawowa zuwa tsarin karkatar da digiri 90.Ana kiran wannan a matsayin hoto mai kyau, yanayin kallo.Ci gaba da ɗaukar wannan fasaha ta asali, LCD yana da na'urori masu zaɓaɓɓu masu yawa da zaɓin yin amfani da wutar lantarki zuwa na'urorin lantarki, ana iya samun nau'ikan alamu iri-iri.

An samar da ci gaba da yawa a TN LCDs.Super Twisted Nematic (STN) Liquid Crystal kayan yana ba da kusurwa mai girma (> = 200 ° vs. 90 °) wanda ke ba da bambanci mafi girma da kuma mafi kyawun kallo.Duk da haka, ɗayan mummunan yanayin shine tasirin birefringence, wanda ke canza launi na baya zuwa launin rawaya-koren da launi mai launi zuwa shuɗi.Ana iya canza wannan launi na baya zuwa launin toka ta amfani da tacewa na musamman.

Ci gaba na baya-bayan nan shine gabatar da nunin nunin faifan Fim ɗin Super Twisted Nematic (FSTN).Wannan yana ƙara fim ɗin retardation zuwa nunin STN wanda ke rama launi da aka ƙara ta hanyar tasirin birefringence.Wannan yana ba da damar yin nuni na baki da fari.


Lokacin aikawa: Janairu-19-2022

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