ELECTROPHORETIC PARTICLE, PARTICLE DISPERSION LIQUID FOR DISPLAY, DISPLAY MEDIUM AND DISPLAY DEVICE

• US 20130222884A1
• Filed: 12/18/2012
• Published: 08/29/2013
• Est. Priority Date: 02/27/2012
• Status: Abandoned Application

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation), Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation), Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Inventors: MORIYAMA, Hiroaki, YAMAMOTO, Yasuo, SEKI, Mieko, MACHIDA, Yoshinori, SATO, Tadanobu
• Application Number:
  US13/718,509
• Publication Number:
  US 20130222884A1
• Time in Patent Office: Days
• US Class Current: 359/296
• CPC Class Codes: C01P 2006/40 Electric properties
• CPC Class Codes: C01P 2006/60 Optical properties, e.g. expressed in CIELAB-values
• CPC Class Codes: C09C 3/12 Treatment with organosilicon compounds C09C3/006 takes precedence
• CPC Class Codes: G02F 2001/1678 characterised by the composition or particle type

Abstract

There is provided an electrophoretic particle, which contains a colored particle containing a charged group-containing polymer and a coloring agent, and a branched silicone-based polymer being attached to the colored particle and containing, as copolymerization components, a reactive monomer and at least one monomer selected from specific monomers, and a particle dispersion liquid for display, a display medium and a display device.

Claims

1. An electrophoretic particle, comprising:

a colored particle containing a charged group-containing polymer and a coloring agent, and

a branched silicone-based polymer being attached to said colored particle and containing, as copolymerization components, a reactive monomer and at least one monomer selected from a monomer represented by the following formula (I), a monomer represented by the following formula (II) and a monomer represented by the following formula (III);

2. A particle dispersion liquid for display, comprising:

a first particle group composed of a first electrophoretic particle comprising a colored particle containing a charged group-containing polymer and a coloring agent, and a branched silicone-based polymer being attached to the colored particle and containing, as copolymerization components, a reactive monomer and at least one monomer selected from a monomer represented by the following formula (I), a monomer represented by the following formula (II) and a monomer represented by the following formula (III),

a second particle group composed of a second electrophoretic particle exhibiting a color different from the first electrophoretic particle and having a smaller particle diameter than the first electrophoretic particle, and

a dispersion medium;

3. A display medium comprising:

a pair of substrates, with at least one substrate having transparency to light, and

the particle dispersion liquid for display according to claim 2, which is enclosed between the pair of substrates.

4. A display medium comprising:

a pair of electrodes, with at least one electrode having transparency to light, and

a region having the particle dispersion liquid for display according to claim 2, which is provided between the pair of electrodes.

5. A display device comprising:

the display medium according to claim 3, and

a voltage applying unit that applies a voltage between the pair of substrates of the display medium.

6. A display device comprising:

the display medium according to claim 4, and

a voltage applying unit that applies a voltage between the pair of electrodes of the display medium.