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Zářivé displeje Tisk Email
Napsal uživatel Adam Hrubý   
Neděle, 09 Březen 2008 15:55
Nová technologie, napodobující způsob, jakým příroda zbarvila křídla motýlů, umožní, aby byly displeje mobilních telefonů dobře čitelné i v jasném slunečním světle. Servis monitorů a to nejen těchto zajišťují specializované společnosti.

Až příště koupíte mobilní telefon, podívejte se zblízka na jeho displej. Pokud se budou věci odvíjet tak, jak Qualcomm doufá, bude ten malý čtvereček plný barev dávat frázi "motýlí efekz" nový význam. Je sice pravdou, že displeje s interferometrickým modulátorem(imod), nedávno představené firmou ze San Diega, nemají s neočekavaně silným dopadem, který teoreticky může mít mávání motýlích křídel na počasí, nic společného , avšakzařízení používá síť umělých mikrostruktur, které vytvářejí stejný druh barev, jaké lze vidět na křídlech tropických motýlů. Qualcomm sází na to, že takový přístup nabídne oproti dnešní dominantní technologii displejů na bázi tekutých krystalů(LCD) několik výhod.

   Tou nejdůležitější je to , že ma displej IMOD mnohem menší nároky na baterii přístroje. Tato vlastnost nabývá stále většího významu, jak lidé čím dál víc používají své mobilní telefony i k surfování po internetu, zasílaní SMS a hraní her, sledovní videa a posloucháním hudby. Takové intenzivní používání představuje pro LCD displeje nároky na řízení spotřeby, protoýe většina z nich není čitelná bez podsvícení. Displej IMOD ale jednoduše odráží okolní světlo stejným způsobem, jako list papíru (nebo motýlí křídla).

  "IMOD tedy spotřebuje jen asi 6 % baterie telefonu, oproti téměř 50% u lcd", říká James Cathey, víceprezident Qualcommu pro rozvoj obchodu. To znamená, že by měl telefon vybavený IMOD displejem vydržet na jedno nabití mnohem déle - dokonce i ikdyž připustíme přídavné osvětlení, ktere by bylo třeba v situacích s malým vnějším osvětlením. "Podle scénáře pro typické používání by telefon nabídl více než 140 minut videa, oproti více než 50mintám u LCD displeje," poznamenává.

 

    Protoýe jsou displeje IMOD reflexibní, dají se také snadněji číst v jasném denním světle: místo aby ztmavly, jako se prakticky stává většině LCD  displejů, jsou ve skutečnosti displeje IMOD ještě jasnější a živější. "Když telefon používáte pro video, text a obrázly, chcete mít stejnou kvalitu prohlížení v mnoha různých prostředích", říká Cathey. 

  Displeje IMOD dokáží také zapínat a vypínat své buňky během asi 10 mikrosekund, zhruba 1000x rychleji než LCD displeje, díky čemuž jsou podstatně vhodnější pro přehrávání videa. Displeje IMOD jsou přinejmenším tak odolné jako LCD. Qualcomm testoval jednotky IMOD pomocí minimálně 12 miliard cyklů zapnout/vypnout, ekvivalent 7 letům provozu -bez jediné chyby. K LCD displejům samozřejmě existuje mnoho alternativ, od OLED (organické světlo-emitující diody) po alektroforetické "e-papírové" displeje. A všechny nabízejí nějakou kombinaci nízké spotřeby energie, čitelnosti v denní světle, rychle odezvy a tak dále, a často vykazují vlastnosti stejně dobré , jako mají displeje IMOD. Žádná z nich všach nepřináší toto vše najednou, proto je Qualcomm tak optimisticky.

 

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