发明名称 |
Electrophoretic display |
摘要 |
An electrophoretic display including a cell having two plates spaced apart and provided at least regionally with electrodes, where at least one plate and an associated electrode facing the observer are transparent. The cell contains a suspension consisting of an inert dielectric liquid phase and a dispersed solid phase which at least in part are optically discriminable electrophoretic particles. The individual electrophoretic particles each are of practically the same density as the liquid phase, and at least part of the electrophoretic particles are pigment particles provided with a coating of organic material which is solid at the cell operating temperature but which melts at higher temperatures. The coating material contains at least one charge control agent. The charge control agent, preferably a salt of a divalent metal or metal of higher valency and of an organic acid, imparts a well-defined, uniform surface charge and a well defined, uniform surface potential to the particles.
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申请公布号 |
US4298448(A) |
申请公布日期 |
1981.11.03 |
申请号 |
US19800115016 |
申请日期 |
1980.01.24 |
申请人 |
BBC BROWN, BOVERI & COMPANY, LIMITED |
发明人 |
MUELLER, KLAUS;ZIMMERMANN, ANDREAS |
分类号 |
G09F9/37;G02F1/167;G03G17/04;(IPC1-7):C25D1/12;B03C5/00 |
主分类号 |
G09F9/37 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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