iSupply estimates that Samsung's 3.7" WVGA AMOLED touchscreen used in Google's Nexus One phone costs $23.5. The whole bill-of-materials of the phone is $174.15. The most expensive part Qualcomm's processor ($30.5).

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Cambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDsCambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDs