Fabrication Of Microcontainers Of E-paper And Its Properties

Owing to ultra low energy-consumption, excellent flexibility, lightweight, electronic paper (E-paper) has attracted most interests recently. Although the microcapsule-type technology was first industrialized by E-ink Corporation, the microcup-type technology of Sipix Corporation seems becoming the one of the most potential display technologies due to its lower cost and better performances. Now, the full-color, high contrast, reflection, low-voltage, fast response, flexible, low-cost, and environmental protection have become the prospects of the future E-paper.This doctoral dissertation focused on the low-cost, environment-friendly and energy-saving E-paper, which was fabricated with cheap and easily available materials and equipments. The main contents of this dissertation were given as following: the chief achievements and novelties are presented in the following 3 parts:First, by choosing and blending the acrylic resin with multi-functions, flexibility, anchoring groups or segments structures, UV-curing material system has been constructed for solvent resistence, flexibility, tetrachloroethene-media microcontainer on ITO/polyester substrate.Secondly, the microcontainer of tetrachloroethene-media has been fabricated by photomask lithography instead of moulding process, followed by interfacial sealing without cosolvent, which can solve the pollution problems in low-cost way. The aforementioned sealing materials consisted of blending of fluorocarbon-base flatting agent, acrylic esters with carboxyl group and photo-initiator with glycol group, i.e., FC-500, EM213, Irgacure 2959, innovatively. The microcontainer of tetrachloroethene-media shows good properties, such as long-term thermal endurance of 80℃, good sealing appearance below 110℃, free bending and excellent flexibility. Furthermore, to obtain electronic ink, the blending of acid-containing co-polymer, block polymer of high molecular weight with anchoring group for pigment and silicon coupling agent with amido group, i.e., BYK110, BYK161, KH-550, has been applied to pigments containing titania in one-pot and dispersing way. The electronic ink can display between bi-stability states by electrophoretic, with the high reflection of 66% and responding time of 140ms by 5 voltages.The integration method to fabricate full-color E-paper was proposed on the basis of the results of research. Moreover, the related impact factors have been studied, which could become the preliminary research foundation of fabrication of full-color E-paper in a low cost and high properties way.