Apparatus and method of preparing electronic ink microcapsules

An apparatus of preparing electronic ink microcapsules, comprising a first input tube, a second input tube, a UV light source, and an output tube connected to both the first input tube and the second input tube, respectively, wherein:

• the first input tube is a shading tube adapted to input an electrophoretic suspension comprising a mixture of a pre-polymer and a photo-initiator;
• the second input tube is adapted to input an aqueous solution comprising a surfactant;
• and
• the UV light source is adapted to radiate the mixed liquid in the output tube, which is a mixture of the liquids from the first input tube and the second input tube to prepare the electronic ink microcapsules,
• wherein the first input tube and the second input tube are connected to the output tube at the same site, thereby forming a manifold pathway port at the confluent site,
• the manifold pathway port has an arc having a diameter of 0.8 to 300 μm at a site opposite to the output tube in a plane through the first input tube, the second input tube and the output tube, and
• the tube sizes of the first input tube and the second input tube are less than the diameter of the arc.