Invention Grant
US07880955B2 Electrophoretic dispersion solution, image display medium using the same, and image display device using the same
有权
电泳分散溶液,使用其的图像显示介质和使用其的图像显示装置
- Patent Title: Electrophoretic dispersion solution, image display medium using the same, and image display device using the same
- Patent Title (中): 电泳分散溶液,使用其的图像显示介质和使用其的图像显示装置
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Application No.: US12483448Application Date: 2009-06-12
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Publication No.: US07880955B2Publication Date: 2011-02-01
- Inventor: Yoshihisa Naijo , Masahiro Yanagisawa
- Applicant: Yoshihisa Naijo , Masahiro Yanagisawa
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2008-174865 20080703
- Main IPC: G02F1/167
- IPC: G02F1/167 ; G02B26/00

Abstract:
An electrophoretic dispersion solution includes a nonpolar solvent and plural kinds of electrophoretic particles. At least one kind of the electrophoretic particles has, on surfaces, a copolymer including a first monomer that has a charged group and a second monomer expressed by a first formula represented as R denotes a hydrogen atom or a methyl group, R′ denotes a hydrogen atom or an alkyl group with a carbon number of 1 through 4, n is a natural number, and x denotes an integer of 1 through 3. At least another kind of the electrophoretic particles include, on surfaces, a polymer including a third monomer expressed by a second formula represented as a component of the polymer. R denotes a hydrogen atom or a methyl group and R″″ denotes an alkyl group with a carbon number of 4 or larger.
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