LIQUID FOR ELECTROPHORETIC DISPLAY AND DISPLAY MEDIUM AND DISPLAY EMPLOYING IT

摘要

A medium for electrophoretic display employing a liquid for electrophoretic display capable of changing the visual recognition state reversibly through action of an electric field, or the like, includes a liquid for electrophoretic display containing alkylpolyetheramine having a structural unit being represented by at least a specified structural formula, one kind or more of fine particles, a dispersant and a dispersion liquid medium where the fine particles contain those subjected to lipophilic surface treatment, and the liquid for electrophoretic display is encapsulated in a independent structure of microcapsule or cell. The electrophoretic display comprises a pair of substrates having a light transmitting electrode formed on at least one of them, and the electrophoretic display medium provided between the substrates. The electrophoretic display medium and the electrophoretic display employing the liquid for electrophoretic display have a high contrast on the display surface and provides a contrast display with high reliability even in the case of repetitive display while ensuring excellent response.