LCD yalowa m'malo mwa CRT ngati yodziwika bwino, ndipo mtengo watsika kwambiri, ndipo wakhala wotchuka kwambiri.
Malinga ndi magwero osiyanasiyana a backlight, LCD ikhoza kugawidwa m'mitundu iwiri: CCFL ndi LED.
Kusamvetsetsa:
Ogwiritsa ntchito ambiri amakhulupirira kuti zowonetsera zamadzimadzi zimatha kugawidwa mu ma LED ndi ma LCD.Kumlingo wina, kumvetsetsa kumeneku ndikosokeretsedwa ndi zotsatsa.
Kuwonetsera kwa LED pamsika sikuwonetsa zenizeni za LED.Kunena zowona, ndi LED-backlit liquid crystal display.Gulu lamadzimadzi lamadzimadzi likadali chiwonetsero chachikhalidwe cha LCD.Tinganene kuti zimenezi n’zachinyengo.chilengedwe!Kampani ya Samsung yaku South Korea nthawi ina inaimbidwa mlandu ndi bungwe la British Advertising Association kuti likuphwanya malamulo otsatsa malonda a dzikolo chifukwa ma TV ake a “LEDTV” LCD amawaganizira kuti amasocheretsa ogula.Pazowonetsera zamadzimadzi, chinsinsi chofunikira kwambiri ndi gulu lake la LCD ndi mtundu wa backlight, pomwe ma LCD owonetsera pamsika nthawi zambiri amagwiritsa ntchito mapanelo a TFT, omwe ndi ofanana.Kusiyanitsa pakati pa ma LED ndi ma LCD ndikuti mitundu yawo yowunikira kumbuyo ndi yosiyana: LED The backlight ndi CCFL backlight (ndiko, nyali za fulorosenti) ndi diode ndi nyali zozizira za cathode, motero.
LCD ndi chidule cha Liquid Crystal Display, kutanthauza "chiwonetsero cha kristalo chamadzi", ndiko kuti, chiwonetsero cha kristalo chamadzi.Kuwala kwa LED kumatanthawuza mtundu wa mawonekedwe a kristalo wamadzimadzi (LCD), ndiko kuti, mawonekedwe amadzimadzi a crystal (LCD) okhala ndi LED (light emitting diode) ngati gwero la backlight.Zitha kuwoneka kuti LCD imaphatikizapo ma LED.Mnzake wa LED kwenikweni ndi CCFL.
Imatanthawuza chiwonetsero cha kristalo chamadzi (LCD) chokhala ndi CCFL (nyali yozizira ya cathode fulorosenti) ngati gwero lounikira kumbuyo.
Ubwino wa CCFL ndikuchita bwino kwamitundu, koma choyipa ndikugwiritsa ntchito mphamvu zambiri.
Imatanthawuza chiwonetsero cha kristalo chamadzi (LCD) chomwe chimagwiritsa ntchito ma LED (ma diode otulutsa kuwala) ngati gwero lounikira kumbuyo, ndipo nthawi zambiri amatanthauza ma WLED (ma LED owala oyera).
Ubwino wa LED ndi kukula kochepa komanso kugwiritsa ntchito mphamvu zochepa.Chifukwa chake, kugwiritsa ntchito LED ngati gwero lakumbuyo kumatha kuwunikira kwambiri poganizira kupepuka ndi kuonda.Choyipa chachikulu ndichakuti mawonekedwe amtunduwo ndi oyipa kuposa a CCFL, kotero akatswiri ambiri ojambula ma LCD akugwiritsabe ntchito CCFL yachikhalidwe ngati gwero lakumbuyo.
Mtengo wotsika
Nthawi zambiri, kuchepetsa ndalama kwakhala lamulo lofunikira kuti makampani apulumuke.M'mbiri yonse yachitukuko cha TFT-LCD, sizovuta kupeza kuti kukulitsa kukula kwa magawo agalasi, kuchepetsa kuchuluka kwa masks, kuchulukitsa zokolola zapasiteshoni ndi zokolola, komanso kugula zinthu zopangira pafupi ndikuyesetsa kosalekeza kwa ambiri a TFT- Opanga LCD..
Gawo lapansi lagalasi ndi chinthu chofunikira kwambiri popanga TFT-LCD, ndipo mtengo wake umakhala pafupifupi 15% mpaka 18% ya mtengo wonse wa TFT-LCD.Idapangidwa kuchokera pamzera woyamba (300mm × 400mm) mpaka mzere wazaka khumi (2,850mm × 3,050).mm), yangodutsa nthawi yochepa ya zaka makumi awiri.Komabe, chifukwa cha zofunikira kwambiri pakupanga mankhwala, kagwiridwe ka ntchito ndi kapangidwe ka magawo agalasi a TFT-LCD, ukadaulo wapadziko lonse lapansi wapadziko lonse lapansi wa TFT-LCD waukadaulo wopanga magalasi ndi msika wakhala akugwiritsidwa ntchito ndi Corning ku United States, Asahi Glass ndi Galasi yamagetsi, etc. Monopolized ndi makampani ochepa.Pansi pa kukwezeleza kwakukulu kwa chitukuko cha msika, dziko la dziko langa linayambanso kutenga nawo mbali mu R & D ndi kupanga magawo a galasi a TFT-LCD mu 2007. Pakalipano, mizere yambiri ya TFT-LCD yopanga magalasi a m'badwo wachisanu ndi pamwamba amangidwa ku China.Iwo akukonzekera kukhazikitsa awiri 8.5-m'badwo mkulu-m'badwo madzi galasi galasi gawo lapansi kupanga mzere ntchito mu theka lachiwiri la 2011.
Izi zimapereka chitsimikiziro chofunikira pakukhazikika kwa zinthu zakumtunda kwa opanga TFT-LCD kumtunda kwa dziko langa komanso kutsika kwakukulu kwamitengo yopangira.
Mbali yaikulu ya teknoloji yopanga TFT ndi ndondomeko ya photolithography, yomwe si mbali yofunika kwambiri yodziwira khalidwe la mankhwala, komanso gawo lofunikira lomwe limakhudza mtengo wa mankhwala.Mu ndondomeko ya photolithography, chidwi kwambiri chimaperekedwa ku chigoba.Ubwino wake umatsimikizira mtundu wa TFT-LCD kwambiri, ndipo kuchepetsedwa kwa kugwiritsidwa ntchito kwake kumatha kuchepetsa ndalama za zida ndikufupikitsa nthawi yopanga.Ndikusintha kwa mawonekedwe a TFT ndikuwongolera njira zopangira, kuchuluka kwa masks omwe amagwiritsidwa ntchito popanga kumachepetsedwa.Zitha kuwoneka kuti kupanga kwa TFT kudachokera ku njira yoyambirira ya 8-mask kapena 7-mask lithography kupita ku njira yomwe imagwiritsidwa ntchito masiku ano ya 5-mask kapena 4-mask lithography process, yomwe imachepetsa kwambiri kupanga kwa TFT-LCD komanso mtengo wopanga. .
4 Mask lithography process yakhala yodziwika bwino pamsika.Pofuna kuchepetsa mosalekeza ndalama zopangira, anthu akhala akuyesera kufufuza momwe angachepetserenso kuchuluka kwa masks omwe amagwiritsidwa ntchito pojambula zithunzi.M'zaka zaposachedwa, makampani ena aku Korea apanga zotsogola pakupanga njira ya 3-mask lithography, ndipo adalengeza kupanga kwakukulu.Komabe, chifukwa cha teknoloji yovuta ya ndondomeko ya 3-mask ndi mlingo wochepa wa zokolola, palibe patsogolo.Pansi pa chitukuko ndi kusintha.Kuchokera pachiwonetsero chachitukuko cha nthawi yayitali, ngati Inkjet (inkjet) teknoloji yosindikizira ikupanga kupambana, kukwaniritsidwa kwa kupanga maskless ndi cholinga chachikulu chomwe anthu amatsata.