Nakuba kunobuchwepheshe obuningi bephaneli yokubonisa etholakalayo namuhla, i I-TFT LCD Ihlala ingenye yezibonisi ezisetshenziswa kakhulu. Futhi kuyisisekelo sezinye izinhlobo eziningi, ngakho kuyajabulisa ukuqonda ukuthi lolu hlobo lobuchwepheshe bokubonisa lusebenza kanjani nokuthi luyini.
Mhlawumbe ungaba nesithakazelo:
Yini isikrini se-TFT LCD?
Una Isikrini se-LCD se-TFT I-Thin Film Transistor (I-Liquid Crystal Display) ubuchwepheshe bokuboniswa obuya ngokuya buduma namuhla, kusukela ezibukweni ezincane kuzo zonke izinhlobo zamadivayisi kuya kuzikrini ezinkulu zikamabonakude.
I-TFT type transistor iwuhlobo lwe-semiconductor esetshenziselwa ukuthuthukisa ukusebenza kahle, ukunciphisa izindleko kanye nokuhlinzeka usayizi omningi ohlangene uma uqhathaniswa nama-CRTIzibonisi ze-TFT LCD ziyizibonisi ze-matrix ezisebenzayo ezilawula amaphikseli ngawodwana, nakuba ukukhanyisa kwenziwa ngokuhlanganyela.
TFT LCD isakhiwo
Isikrini se-TFT LCD sakhiwe nge izingqimba ezintathu eziyisisekeloLezi zendlalelo zihlanganiswe phakathi kwama-substrates engilazi kanye nolunye ungqimba ngesihlungi sombala se-RGB (Okuluhlaza Okuhlaza Okuhlaza Okubomvu Okubomvu). Ungqimba phakathi kwezingqimba ezimbili zengilazi yikristalu ewuketshezi.
La I-TFT glass substrate layer Ingqimba ejulile noma engemuva kakhulu yebhodi lesekhethi yedivayisi. Yenziwe nge-amorphous silicon, uhlobo lwe-silicon enesakhiwo esingeyona i-crystalline. Ngale ndlela, ngokulawula i-voltage esetshenzisiwe, imibala eboniswa kuphikseli ngayinye ingalawulwa.
Izinhlangothi zangaphandle ze-glass substrates zine izihlungi ezibizwa ngokuthi ama-polarizerLezi zihlungi zivumela kuphela imishayo yokukhanya ethile ukuthi idlule uma i-polarized ngendlela ethile. Uma kungahlukanisiwe kahle, ukukhanya akudluli ku-polarizer, kwakheka isikrini se-LCD esikhanyayo.
Phakathi kwezingqimba ezimbili ze-substrate kukhona amakristalu liquidEhlangene, ama-molecule e-crystal ewuketshezi angaziphatha njengoketshezi ngokuya ngokunyakaza, kodwa agcine ukwakheka kwawo njengekristalu eqinile. Kunezinhlobonhlobo zamafomula amakhemikhali atholakalayo ukuze asetshenziswe kulolu ungqimba. Imvamisa, amakristalu awuketshezi aqondaniswe ukuze amise ama-molecule ngendlela ethile ukuze ahehe ukuziphatha okudlula ukukhanya ngokusebenzisa i-polarization yamaza okukhanya. Ukuze wenze lokhu, insimu kazibuthe noma kagesi kufanele isetshenziswe.
Njengoba wazi kahle, ama-transistors alandela umgomo ofanayo wokusebenza njengama-FET noma ama-transistors we-field-effect. Ngenxa yalesi sizathu, ukuqhutshwa ngabo kungalawulwa ngokusebenzisa isignali noma i-voltage esangweni. Uma isignali isetshenziswa esangweni ukuze kugeleze okwamanje phakathi kwe-drain kanye nomthombo, okwamanje kuzogeleza ku-subpixel, okuvumela ukukhanya kudlule.
Lena yindlela isikrini se-TFT LCD esisebenza ngayo. Kunjalo, njengoba wazi kahle, kukhona ke okuhlukile, njengezikrini ze-LED, ama-LED ane Iphaneli ye-IPS, iphaneli ye-VA, noma i-TN, phakathi kokunye okuhlukile okuchumayo njengamanje ukuzama ukudambisa ukonakala kwalawa maphaneli nokuwanikeza ukuthuthukiswa okuthakazelisayo, kuyilapho kugcinwa amanani aphusile njengoba lobu ubuchwepheshe obuvuthiwe nobuyongayo.
I-architecture yephikseli ye-TFT
Ekugcineni, ngithanda ukungeza ukuthi ngaphakathi kwesikrini se-TFT LCD, iphikseli ngalinye lingabonakala ngalo amaphikseli amancane amathathuLawa maphikseli amancane amathathu adala umbala we-RGB waleyo pixel iyonke—obomvu, oluhlaza okotshani, noma oluhlaza okwesibhakabhaka, noma inhlanganisela yale mibala eyinhloko ukuze ikhiqize eminye imibala namathunzi. Uma yonke imibala iboniswa kanyekanye, ihambisana nokukhanya okumhlophe. Izihlungi kanye ne-polarization kufinyelela amazinga ahlukene okukhanya kuye ngokuqondana kwekristalu ewuketshezi.
Lawa maphikseli amancane asebenza njengama-capacitor noma amadrayivu okushayela ngaphakathi kocingo, ngayinye inezendlalelo zayo ezizimele zesakhiwo nokusebenza, njengoba kuchazwe ngenhla. Ngakho-ke, lapho iphrosesa yezithombe ithumela imininingwane yohlaka, ingaboniswa ngokulawula zonke izici zesikrini njengoba kuhlosiwe.