Pixilated displays

The ability to process the luminescent semiconducting polymer from solution enables the introduction of simple and potentially inexpensive methods for manufacturing pixilated displays. There are two general classes of pixilated displays that differ in the manner in which the individual pixels are switched on and off passive matrix displays and active matrix displays. 

In display applications, fast (video rate) switching of the pixels is required. The intrinsic lifetime of the electroluminescence is the decay time of the photoluminescence i. e. less than a nanosecond. Thus, for pixilated polymer emissive displays, the switching rate is limited only by the RC time constant of the device. For the small pixels of a full-color display, C is sufficiently small that the devices can be switched in times in the nanosecond regime. This fast switching is demonstrated for a single pixel in Fig. 4.19. 

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