TFT-LCD: kufotokoza mfundo ya ntchito

Mu katundu wamakono banja ankagwiritsa ntchito chinthu monga TFT anasonyeza. Ndi ntchito zosiyanasiyana zipangizo: oyang'anira computer, matelevizioni, zowonetsera foni, mu camcorders ndi makamera, komanso zipangizo zina zambiri. Kodi mtundu wa sayansi, kodi ubwino? M'nkhaniyi, tiona zimene tingachite TFT-LCD, ubwino ndi kuipa.

Woonda-filimu transistor (TFT) anawamasulira kuti m'Chichewa limatanthauza woonda-filimu transistor. Izi zinthu anapangidwa ndi woonda filimu makulidwe a 0.1-0.01 micrometer. Apa ngati transistors m'manja mwa TFT-masanjidwewo, koma iwo akutchedwa "wamphamvu". Kungochita monga zipangizo madzi galasi. Yogwira TFT anasonyeza, mosiyana ndi luso LCD, ali ndi liwiro lalikulu, ndi momveka apamwamba kwambiri ndipo kusiyana kwa chithunzi kwambiri lonse kuonera njingayo. Mu zipangizozi palibe kukulowa nsalu yotchinga, imene maso wotopa. Mu yogwira masanjidwewo mapikiselo ikuyambitsa cheza kuwala kamwazi ndi mtundu anakonzeratu, kotero TFT anasonyeza ndi owala kwambiri kuposa kungokhala chete masanjidwewo LCD. ubwino zonsezi chifukwa chakuti luso anafotokoza ali apamwamba chithunzi kulunzanitsa mlingo. Ichi ndi chifukwa chakuti mfundo za kangoloko umalamulidwa ndi osiyana woonda filimu transistor. chiwerengero cha zinthu zoterozo mu TFT-luso katatu lalikulu kuposa chiwerengero cha pixels. Choncho, ina machesi atatu akuda maselo: wofiira, wobiriwira ndi buluu (RGB dongosolo). Mwachitsanzo, taganizirani bokosi: anasonyeza TFT (mtundu) ndi Maganizo a 1280x1024 pixels, motero, chiwerengero cha transistors mu chipangizo amenewa adzakhala 3840h1024.

Woyamba madzi galasi masanjidwewo anaonekera mu 1972. Kuyambira pamenepo, luso ali kusanduka kwambiri ndipo anasintha. Komabe, zonse zinali zovuta kuthetsa zolakwa za. Mwachitsanzo, chifukwa cha kuchuluka kwa pixels zambiri pakati pawo angapezeke ndi "mtima wosweka", chomwe chawonongeka. Chotero mfundo owonongedwa sangathe kukonzedwa. Tikumbukenso kuti pa masanjidwewo yogwira "mtima wosweka" pixels ndi osaonekera kuposa zipangizo chabe kapena kusonyezedwa, wapawiri jambulani. Wopitiriza chitukuko cha TFT-luso ali kwambiri yafupika mtengo yopangira oyang'anira amenewa tsopano "mtengo zosowa" wakhala wamba. Chinthu chofunika kwambiri ambiri yogwira masanjidwewo makampani anali omasuka ntchito. Masiku ano palibe kudabwa ndi kukhudza nsalu yotchinga TFT anasonyeza, ndipo zaka makumi awiri zapitazo zinali chinthu. Rasprostanenie touchmonitors unachitika maonekedwe a zanyengo, angathe kugwira ntchito mu mapangidwe nkhanza. Zotsatira zake zinali TFT anasonyeza wagawo, kaphatikizidwe kudzera kusonyeza zambiri pophunzitsa, ndipo chipangizo athandizira (kiyibodi). Mwachangu zoterozo dongosolo amapereka siriyo mawonekedwe Mtsogoleri. chipangizo ichi pa dzanja limodzi chikugwirizana kwa polojekiti ndi zina - ku doko siriyo (COM1 - COM4). Kulamulira ndi decode chizindikiro kwa sensa, komanso yimitsira a "zophukiranso" ntchito chithunzi-opha. Iwo amatha kupereka liwiro mkulu ndi olondola kudziwa mfundo kukhudza.

Pomaliza, tinganene kuti TFT-luso monga chiwonetsero ndipo zimatulutsa ndi onse otizungulira tsiku ndi tsiku, iwo ntchito pafupifupi aliyense chipangizo chamagetsi banja.