Abstract

The tradeoff between narrow and broad bandwidth emitters and filters permeates the discussion of multi-primary displays. The color saturation offered by narrow bandwidth emitters and filters provides an important display characteristic, permitting highly saturated colors to be rendered appropriately. However, broad bandwidth emitters and filters often provide higher energy efficiency, greater eye sensitivity, and a reduction in the likelihood of metameric failure. In RGB displays, the attributes enabled by narrow bandwidth emitters and filters are always in competition with the attributes enabled by broad bandwidth emitters and filters. In this chapter we illustrate how additional primaries, having either broad bandwidth or narrow bandwidth emission, eliminates this competition, opening the door to higher energy efficacy, reduced metameric failure, and the enablement of new display configurations. It is the removal of this competition which creates the multi-primary advantage.

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