The last time we discuss this patent, my understanding was that the ten fold was not enough for commercialization. If my memory serve me, it bring us to a couple of hundred of hours. Now, I just read on the patent:
"Although the blue PHOLED lifetime reported here remains considerably less than that of red and green PHOLEDs at similar luminances, blue sub-pixels in displays operate at a considerably lower luminance than either the red or green sub-pixels. For example, the required luminance to achieve an sRGB color gamut for green is 9.9 times the luminance for blue. (Stokes, M., Anderson, M., Chandrasekar, S. & Motta, R. A standard default color space for the internet-srgb. Microsoft and Hewlett-Packard Joint Report (1996)). Thus, a comparison between blue and green PHOLED lifetimes for displays suggests that the blue PHOLED sub-pixel luminance needs to be only ˜10% that of the green. Under such conditions (i.e. 100 cd/m2), the TPA model estimate the blue PHOLED lifetime is 70,000 hr. Also, adopting a degradation acceleration factor that relates luminance to lifetime, viz."
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