Abstract
This paper describes a simple micropatterning method of multiple types of photonic colloidal crystals (PCCs) on a single substrate for an optical color filter attached to a monochromic reflective display. We developed a "channel-cut method" to introduce multiple colloidal suspensions selectively and sequentially into a microchannel network. Colloidal suspensions are crystallized by centrifugal force. We succeeded in patterning of three different PCCs made of polystyrene in a single-layered microchannel. These PCCs exhibit red, blue and green structural color, respectively. We believe that our patterning method will realize a colorized reflective display that achieves low energy consumption and high color expression.
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